Fix: Disable DTMF dialing after first received KP (pulse) digit
[lcr.git] / mISDN.cpp
index 6a9e569..8ae5855 100644 (file)
--- a/mISDN.cpp
+++ b/mISDN.cpp
 
 #include "main.h"
 #include "myisdn.h"
-#ifndef SOCKET_MISDN
-// old mISDN
-extern "C" {
-#include <mISDNuser/net_l2.h>
-}
-
-#ifndef CMX_TXDATA_ON
-#define OLD_MISDN
-#endif
-#ifndef CMX_TXDATA_OFF
-#define OLD_MISDN
-#endif
-#ifndef CMX_DELAY
-#define OLD_MISDN
-#endif
-#ifndef PIPELINE_CFG
-#define OLD_MISDN
-#endif
-#ifndef CMX_TX_DATA
-#define OLD_MISDN
-#endif
-
-#ifdef OLD_MISDN
-#warning
-#warning *********************************************************
-#warning *
-#warning * It seems that you use an older version of mISDN.
-#warning * Features like voice recording or echo will not work.
-#warning * Also it causes problems with loading modules and may
-#warning * not work at all.
-#warning *
-#warning * Please upgrade to newer version. A working version can
-#warning * be found at www.linux-call-router.de.
-#warning *
-#warning * Do not use the mISDN_1_1 branch, it does not have all
-#warning * the features that are required. Use the master branch
-#warning * instead.
-#warning *
-#warning *********************************************************
-#warning
-#error
-#endif
-
-#ifndef ISDN_PID_L4_B_USER
-#define ISDN_PID_L4_B_USER 0x440000ff
-#endif
-
-#else
-// socket mISDN
-extern "C" {
-}
-#include <q931.h>
+#include <mISDN/q931.h>
 
 #undef offsetof
 #ifdef __compiler_offsetof
@@ -71,6 +20,7 @@ extern "C" {
 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
 #endif
 
+#ifndef container_of
 #define container_of(ptr, type, member) ({                     \
        const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
        (type *)( (char *)__mptr - offsetof(type,member) );})
@@ -87,39 +37,63 @@ struct mISDNport *mISDNport_first;
 unsigned char mISDN_rand[256];
 int mISDN_rand_count = 0;
 
-#ifdef SOCKET_MISDN
-unsigned long mt_assign_pid = ~0;
+#ifdef OLD_MT_ASSIGN
+unsigned int mt_assign_pid = ~0;
+#endif
 
 int mISDNsocket = -1;
+static int upqueue_pipe[2];
+static struct lcr_fd upqueue_fd;
+int upqueue_avail = 0;
+
+static int mISDN_upqueue(struct lcr_fd *fd, unsigned int what, void *instance, int i);
+static int mISDN_timeout(struct lcr_timer *timer, void *instance, int i);
+
+static int my_mISDNlib_debug(const char *file, int line, const char *func, int level, const char *fmt, va_list va)
+{
+        int ret = 0;
+
+        if (debug_fp > 0)
+               ret = vfprintf(debug_fp, fmt, va);
+       return ret;
+}
+
+static struct mi_ext_fn_s myfn;
 
 int mISDN_initialize(void)
 {
        char filename[256];
+       int ver;
 
        /* try to open raw socket to check kernel */
        mISDNsocket = socket(PF_ISDN, SOCK_RAW, ISDN_P_BASE);
-       if (mISDNsocket < 0)
-       {
-               fprintf(stderr, "Cannot open mISDN due to '%s'. (Does your Kernel support socket based mISDN?)\n", strerror(errno));
+       if (mISDNsocket < 0) {
+               fprintf(stderr, "Cannot open mISDN due to '%s'. (Does your Kernel support socket based mISDN? Protocol family is %d.)\n", strerror(errno), PF_ISDN);
                return(-1);
        }
 
        /* init mlayer3 */
-       init_layer3(4); // buffer of 4
+       // set debug printout function
+       myfn.prt_debug = my_mISDNlib_debug;
+
+       ver = init_layer3(4, &myfn); // buffer of 4
 
        /* open debug, if enabled and not only stack debugging */
-       if (options.deb)
-       {
-               SPRINT(filename, "%s/debug.log", INSTALL_DATA);
+       if (options.deb) {
+               SPRINT(filename, "%s/debug.log", LOG_DIR);
                debug_fp = fopen(filename, "a");
        }
 
        if (options.deb & DEBUG_STACK)
-       {
-               SPRINT(filename, "%s/debug_mISDN.log", INSTALL_DATA);
-               mISDN_debug_init(0xffffffff, filename, filename, filename);
-       } else
-               mISDN_debug_init(0, NULL, NULL, NULL);
+               mISDN_set_debug_level(0xfffffeff);
+       else
+               mISDN_set_debug_level(0);
+
+       if (pipe(upqueue_pipe) < 0)
+               FATAL("Failed to open pipe\n");
+       memset(&upqueue_fd, 0, sizeof(upqueue_fd));
+       upqueue_fd.fd = upqueue_pipe[0];
+       register_fd(&upqueue_fd, LCR_FD_READ, mISDN_upqueue, NULL, 0);
 
        return(0);
 }
@@ -128,91 +102,27 @@ void mISDN_deinitialize(void)
 {
        cleanup_layer3();
 
-       mISDN_debug_close();
-
        if (debug_fp)
                fclose(debug_fp);
        debug_fp = NULL;
 
        if (mISDNsocket > -1)
                close(mISDNsocket);
-}
-#else
-int entity = 0; /* used for udevice */
-int mISDNdevice = -1; /* the device handler and port list */
-
-int mISDN_initialize(void)
-{
-       char debug_log[128];
-       unsigned char buff[1025];
-       iframe_t *frm = (iframe_t *)buff;
-       int ret;
-
-       /* initialize stuff of the NT lib */
-       if (options.deb & DEBUG_STACK)
-       {
-               global_debug = 0xffffffff & ~DBGM_MSG;
-//             global_debug = DBGM_L3DATA;
-       } else
-               global_debug = DBGM_MAN;
-       SPRINT(debug_log, "%s/debug.log", INSTALL_DATA);
-       if (options.deb & DEBUG_LOG)
-               debug_init(global_debug, debug_log, debug_log, debug_log);
-       else
-               debug_init(global_debug, NULL, NULL, NULL);
-       msg_init();
 
-       /* open mISDNdevice if not already open */
-       if (mISDNdevice < 0)
-       {
-               ret = mISDN_open();
-               if (ret < 0)
-               {
-                       fprintf(stderr, "cannot open mISDN device ret=%d errno=%d (%s) Check for mISDN modules!\nAlso did you create \"/dev/mISDN\"? Do: \"mknod /dev/mISDN c 46 0\"\n", ret, errno, strerror(errno));
-                       return(-1);
-               }
-               mISDNdevice = ret;
-               PDEBUG(DEBUG_ISDN, "mISDN device opened.\n");
-
-               /* create entity for layer 3 TE-mode */
-               mISDN_write_frame(mISDNdevice, buff, 0, MGR_NEWENTITY | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
-               ret = mISDN_read_frame(mISDNdevice, frm, sizeof(iframe_t), 0, MGR_NEWENTITY | CONFIRM, TIMEOUT_1SEC);
-               if (ret < (int)mISDN_HEADER_LEN)
-               {
-                       noentity:
-                       FATAL("Cannot request MGR_NEWENTITY from mISDN. Exitting due to software bug.");
-               }
-               entity = frm->dinfo & 0xffff;
-               if (!entity)
-                       goto noentity;
-               PDEBUG(DEBUG_ISDN, "our entity for l3-processes is %d.\n", entity);
+       if (upqueue_fd.inuse) {
+               unregister_fd(&upqueue_fd);
+               close(upqueue_pipe[0]);
+               close(upqueue_pipe[1]);
        }
-       return(0);
+       upqueue_avail = 0;
 }
 
-void mISDN_deinitialize(void)
-{
-       unsigned char buff[1025];
-
-       debug_close();
-       global_debug = 0;
-
-       if (mISDNdevice > -1)
-       {
-               /* free entity */
-               mISDN_write_frame(mISDNdevice, buff, 0, MGR_DELENTITY | REQUEST, entity, 0, NULL, TIMEOUT_1SEC);
-               /* close device */
-               mISDN_close(mISDNdevice);
-               mISDNdevice = -1;
-               PDEBUG(DEBUG_ISDN, "mISDN device closed.\n");
-       }
-}
-#endif
+static int load_timer(struct lcr_timer *timer, void *instance, int index);
 
 /*
  * constructor
  */
-PmISDN::PmISDN(int type, mISDNport *mISDNport, char *portname, struct port_settings *settings, int channel, int exclusive) : Port(type, portname, settings)
+PmISDN::PmISDN(int type, mISDNport *mISDNport, char *portname, struct port_settings *settings, struct interface *interface, int channel, int exclusive, int mode) : Port(type, portname, settings, interface)
 {
        p_m_mISDNport = mISDNport;
        p_m_portnum = mISDNport->portnum;
@@ -220,25 +130,30 @@ PmISDN::PmISDN(int type, mISDNport *mISDNport, char *portname, struct port_setti
        p_m_b_channel = 0;
        p_m_b_exclusive = 0;
        p_m_b_reserve = 0;
-       p_m_delete = 0;
+       p_m_b_mode = mode;
        p_m_hold = 0;
        p_m_tx_gain = mISDNport->ifport->interface->tx_gain;
        p_m_rx_gain = mISDNport->ifport->interface->rx_gain;
        p_m_conf = 0;
+       p_m_mute = 0;
        p_m_txdata = 0;
        p_m_delay = 0;
+       p_m_tx_dejitter = 0;
+       p_m_preload = ISDN_LOAD;
+       p_m_disable_dejitter = 0;
        p_m_echo = 0;
        p_m_tone = 0;
        p_m_rxoff = 0;
-       p_m_joindata = 0;
+       p_m_inband_send_on = 0;
+       p_m_inband_receive_on = 0;
        p_m_dtmf = !mISDNport->ifport->nodtmf;
-       p_m_timeout = 0;
-       p_m_timer = 0;
-       p_m_remote_ref = 0; /* channel shall be exported to given remote */
-       p_m_remote_id = 0; /* channel shall be exported to given remote */
+       memset(&p_m_timeout, 0, sizeof(p_m_timeout));
+       add_timer(&p_m_timeout, mISDN_timeout, this, 0);
        SCPY(p_m_pipeline, mISDNport->ifport->interface->pipeline);
        
        /* audio */
+       memset(&p_m_loadtimer, 0, sizeof(p_m_loadtimer));
+       add_timer(&p_m_loadtimer, load_timer, this, 0);
        p_m_load = 0;
        p_m_last_tv_sec = 0;
 
@@ -256,16 +171,14 @@ PmISDN::PmISDN(int type, mISDNport *mISDNport, char *portname, struct port_setti
        p_m_crypt_listen_len = 0;
        p_m_crypt_listen_msg[0] = '\0';
        p_m_crypt_listen_crc = 0;
-       if (mISDNport->ifport->interface->bf_len >= 4 && mISDNport->ifport->interface->bf_len <= 56)
-       {
+       if (mISDNport->ifport->interface->bf_len >= 4 && mISDNport->ifport->interface->bf_len <= 56) {
                memcpy(p_m_crypt_key, mISDNport->ifport->interface->bf_key, p_m_crypt_key_len);
                p_m_crypt_key_len = mISDNport->ifport->interface->bf_len;
                p_m_crypt = 1;
        }
 
        /* if any channel requested by constructor */
-       if (channel == CHANNEL_ANY)
-       {
+       if (channel == CHANNEL_ANY) {
                /* reserve channel */
                p_m_b_reserve = 1;
                mISDNport->b_reserved++;
@@ -278,6 +191,7 @@ PmISDN::PmISDN(int type, mISDNport *mISDNport, char *portname, struct port_setti
        /* we increase the number of objects: */
        mISDNport->use++;
        PDEBUG(DEBUG_ISDN, "Created new mISDNPort(%s). Currently %d objects use, port #%d\n", portname, mISDNport->use, p_m_portnum);
+//inband_receive_on();
 }
 
 
@@ -288,12 +202,14 @@ PmISDN::~PmISDN()
 {
        struct lcr_msg *message;
 
+       del_timer(&p_m_timeout);
+       del_timer(&p_m_loadtimer);
+
        /* remove bchannel relation */
        drop_bchannel();
 
        /* release epoint */
-       while (p_epointlist)
-       {
+       while (p_epointlist) {
                PDEBUG(DEBUG_ISDN, "destroy mISDNPort(%s). endpoint still exists, releaseing.\n", p_name);
                message = message_create(p_serial, p_epointlist->epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
                message->param.disconnectinfo.cause = 16;
@@ -312,10 +228,10 @@ PmISDN::~PmISDN()
 /*
  * trace
  */
-void chan_trace_header(struct mISDNport *mISDNport, class PmISDN *port, char *msgtext, int direction)
+void chan_trace_header(struct mISDNport *mISDNport, class PmISDN *port, const char *msgtext, int direction)
 {
        /* init trace with given values */
-       start_trace(mISDNport?mISDNport->portnum:0,
+       start_trace(mISDNport?mISDNport->portnum:-1,
                    (mISDNport)?((mISDNport->ifport)?mISDNport->ifport->interface:NULL):NULL,
                    port?numberrize_callerinfo(port->p_callerinfo.id, port->p_callerinfo.ntype, options.national, options.international):NULL,
                    port?port->p_dialinginfo.id:NULL,
@@ -330,14 +246,14 @@ void chan_trace_header(struct mISDNport *mISDNport, class PmISDN *port, char *ms
  * layer trace header
  */
 static struct isdn_message {
-       char *name;
-       unsigned long value;
+       const char *name;
+       unsigned int value;
 } isdn_message[] = {
        {"PH_ACTIVATE", L1_ACTIVATE_REQ},
        {"PH_DEACTIVATE", L1_DEACTIVATE_REQ},
        {"DL_ESTABLISH", L2_ESTABLISH_REQ},
        {"DL_RELEASE", L2_RELEASE_REQ},
-       {"UNKNOWN", L3_UNKNOWN},
+       {"UNKNOWN", L3_UNKNOWN_REQ},
        {"MT_TIMEOUT", L3_TIMEOUT_REQ},
        {"MT_SETUP", L3_SETUP_REQ},
        {"MT_SETUP_ACK", L3_SETUP_ACKNOWLEDGE_REQ},
@@ -366,33 +282,27 @@ static struct isdn_message {
        {"MT_FACILITY", L3_FACILITY_REQ},
        {"MT_STATUS", L3_STATUS_REQ},
        {"MT_RESTART", L3_RESTART_REQ},
-#ifdef SOCKET_MISDN
        {"MT_NEW_L3ID", L3_NEW_L3ID_REQ},
        {"MT_RELEASE_L3ID", L3_RELEASE_L3ID_REQ},
-#else
-       {"MT_NEW_CR", L3_NEW_CR_REQ},
-       {"MT_RELEASE_CR", L3_RELEASE_CR_REQ},
-#endif
-
        {NULL, 0},
 };
-static char *isdn_prim[4] = {
+static const char *isdn_prim[4] = {
        " REQUEST",
        " CONFIRM",
        " INDICATION",
        " RESPONSE",
 };
-void l1l2l3_trace_header(struct mISDNport *mISDNport, class PmISDN *port, unsigned long msg, int direction)
+void l1l2l3_trace_header(struct mISDNport *mISDNport, class PmISDN *port, unsigned int msg, int direction)
 {
        int i;
-       char msgtext[64] = "<<UNKNOWN MESSAGE>>";
+       char msgtext[64];
 
+       SCPY(msgtext, "<<UNKNOWN MESSAGE>>");
        /* select message and primitive text */
        i = 0;
-       while(isdn_message[i].name)
-       {
-               if (isdn_message[i].value == (msg&0xffffff00))
-               {
+       while(isdn_message[i].name) {
+//             if (msg == L3_NOTIFY_REQ) printf("val = %x %s\n", isdn_message[i].value, isdn_message[i].name);
+               if (isdn_message[i].value == (msg&0xffffff00)) {
                        SCPY(msgtext, isdn_message[i].name);
                        break;
                }
@@ -401,22 +311,14 @@ void l1l2l3_trace_header(struct mISDNport *mISDNport, class PmISDN *port, unsign
        SCAT(msgtext, isdn_prim[msg&0x00000003]);
 
        /* add direction */
-#ifdef SOCKET_MISDN
-       if (direction && (msg&0xffffff00)!=L3_NEW_L3ID_REQ && (msg&0xffffff00)!=L3_RELEASE_L3ID_REQ)
-#else
-       if (direction && (msg&0xffffff00)!=L3_NEW_CR_REQ && (msg&0xffffff00)!=L3_RELEASE_CR_REQ)
-#endif
-       {
-               if (mISDNport)
-               {
-                       if (mISDNport->ntmode)
-                       {
+       if (direction && (msg&0xffffff00)!=L3_NEW_L3ID_REQ && (msg&0xffffff00)!=L3_RELEASE_L3ID_REQ) {
+               if (mISDNport) {
+                       if (mISDNport->ntmode) {
                                if (direction == DIRECTION_OUT)
                                        SCAT(msgtext, " N->U");
                                else
                                        SCAT(msgtext, " N<-U");
-                       } else
-                       {
+                       } else {
                                if (direction == DIRECTION_OUT)
                                        SCAT(msgtext, " U->N");
                                else
@@ -426,7 +328,7 @@ void l1l2l3_trace_header(struct mISDNport *mISDNport, class PmISDN *port, unsign
        }
 
        /* init trace with given values */
-       start_trace(mISDNport?mISDNport->portnum:0,
+       start_trace(mISDNport?mISDNport->portnum:-1,
                    mISDNport?(mISDNport->ifport?mISDNport->ifport->interface:NULL):NULL,
                    port?numberrize_callerinfo(port->p_callerinfo.id, port->p_callerinfo.ntype, options.national, options.international):NULL,
                    port?port->p_dialinginfo.id:NULL,
@@ -440,12 +342,11 @@ void l1l2l3_trace_header(struct mISDNport *mISDNport, class PmISDN *port, unsign
 /*
  * send control information to the channel (dsp-module)
  */
-#ifdef SOCKET_MISDN
-void ph_control(struct mISDNport *mISDNport, class PmISDN *isdnport, unsigned long sock, unsigned long c1, unsigned long c2, char *trace_name, int trace_value)
+void ph_control(struct mISDNport *mISDNport, class PmISDN *isdnport, int sock, unsigned int c1, unsigned int c2, const char *trace_name, int trace_value)
 {
        unsigned char buffer[MISDN_HEADER_LEN+sizeof(int)+sizeof(int)];
        struct mISDNhead *ctrl = (struct mISDNhead *)buffer;
-       unsigned long *d = (unsigned long *)(buffer+MISDN_HEADER_LEN);
+       unsigned int *d = (unsigned int *)(buffer+MISDN_HEADER_LEN);
        int ret;
 
        if (sock < 0)
@@ -458,42 +359,19 @@ void ph_control(struct mISDNport *mISDNport, class PmISDN *isdnport, unsigned lo
        ret = sendto(sock, buffer, MISDN_HEADER_LEN+sizeof(int)*2, 0, NULL, 0);
        if (ret <= 0)
                PERROR("Failed to send to socket %d\n", sock);
-#else
-void ph_control(struct mISDNport *mISDNport, class PmISDN *isdnport, unsigned long addr, unsigned long c1, unsigned long c2, char *trace_name, int trace_value)
-{
-       unsigned char buffer[mISDN_HEADER_LEN+sizeof(int)+sizeof(int)];
-       iframe_t *ctrl = (iframe_t *)buffer; 
-       unsigned long *d = (unsigned long *)&ctrl->data.p;
-
-       if (!addr)
-               return;
-
-       ctrl->prim = PH_CONTROL | REQUEST;
-       ctrl->addr = addr | FLG_MSG_DOWN;
-       ctrl->dinfo = 0;
-       ctrl->len = sizeof(int)*2;
-       *d++ = c1;
-       *d++ = c2;
-       mISDN_write(mISDNdevice, ctrl, mISDN_HEADER_LEN+ctrl->len, TIMEOUT_1SEC);
-#endif
        chan_trace_header(mISDNport, isdnport, "BCHANNEL control", DIRECTION_OUT);
-#ifdef SOCKET_MISDN
        if (c1 == DSP_CONF_JOIN)
-#else
-       if (c1 == CMX_CONF_JOIN)
-#endif
                add_trace(trace_name, NULL, "0x%08x", trace_value);
        else
                add_trace(trace_name, NULL, "%d", trace_value);
        end_trace();
 }
 
-#ifdef SOCKET_MISDN
-void ph_control_block(struct mISDNport *mISDNport, class PmISDN *isdnport, int sock, unsigned long c1, void *c2, int c2_len, char *trace_name, int trace_value)
+void ph_control_block(struct mISDNport *mISDNport, class PmISDN *isdnport, int sock, unsigned int c1, void *c2, int c2_len, const char *trace_name, int trace_value)
 {
        unsigned char buffer[MISDN_HEADER_LEN+sizeof(int)+c2_len];
        struct mISDNhead *ctrl = (struct mISDNhead *)buffer;
-       unsigned long *d = (unsigned long *)(buffer+MISDN_HEADER_LEN);
+       unsigned int *d = (unsigned int *)(buffer+MISDN_HEADER_LEN);
        int ret;
 
        if (sock < 0)
@@ -506,29 +384,12 @@ void ph_control_block(struct mISDNport *mISDNport, class PmISDN *isdnport, int s
        ret = sendto(sock, buffer, MISDN_HEADER_LEN+sizeof(int)+c2_len, 0, NULL, 0);
        if (ret <= 0)
                PERROR("Failed to send to socket %d\n", sock);
-#else
-void ph_control_block(struct mISDNport *mISDNport, class PmISDN *isdnport, unsigned long addr, unsigned long c1, void *c2, int c2_len, char *trace_name, int trace_value)
-{
-       unsigned char buffer[mISDN_HEADER_LEN+sizeof(int)+c2_len];
-       iframe_t *ctrl = (iframe_t *)buffer;
-       unsigned long *d = (unsigned long *)&ctrl->data.p;
-
-       if (!addr)
-               return;
-
-       ctrl->prim = PH_CONTROL | REQUEST;
-       ctrl->addr = addr | FLG_MSG_DOWN;
-       ctrl->dinfo = 0;
-       ctrl->len = sizeof(int)+c2_len;
-       *d++ = c1;
-       memcpy(d, c2, c2_len);
-       mISDN_write(mISDNdevice, ctrl, mISDN_HEADER_LEN+ctrl->len, TIMEOUT_1SEC);
-#endif
        chan_trace_header(mISDNport, isdnport, "BCHANNEL control", DIRECTION_OUT);
        add_trace(trace_name, NULL, "%d", trace_value);
        end_trace();
 }
 
+static int b_sock_callback(struct lcr_fd *fd, unsigned int what, void *instance, int i);
 
 /*
  * subfunction for bchannel_event
@@ -537,129 +398,43 @@ void ph_control_block(struct mISDNport *mISDNport, class PmISDN *isdnport, unsig
 static int _bchannel_create(struct mISDNport *mISDNport, int i)
 {
        int ret;
-#ifdef SOCKET_MISDN
-       unsigned long on = 1;
        struct sockaddr_mISDN addr;
 
-       if (mISDNport->b_socket[i] > -1)
-       {
+       if (mISDNport->b_sock[i].inuse) {
                PERROR("Error: Socket already created for index %d\n", i);
                return(0);
        }
 
        /* open socket */
 //#warning testing without DSP
-//     mISDNport->b_socket[i] = socket(PF_ISDN, SOCK_DGRAM, ISDN_P_B_RAW);
-       mISDNport->b_socket[i] = socket(PF_ISDN, SOCK_DGRAM, ISDN_P_B_L2DSP);
-       if (mISDNport->b_socket[i] < 0)
-       {
-               PERROR("Error: Failed to open bchannel-socket for index %d with mISDN-DSP layer. Did you load mISDNdsp.ko?\n", i);
-               return(0);
-       }
-       
-       /* set nonblocking io */
-       ret = ioctl(mISDNport->b_socket[i], FIONBIO, &on);
-       if (ret < 0)
-       {
-               PERROR("Error: Failed to set bchannel-socket index %d into nonblocking IO\n", i);
-               close(mISDNport->b_socket[i]);
-               mISDNport->b_socket[i] = -1;
+//     mISDNport->b_sock[i].fd = socket(PF_ISDN, SOCK_DGRAM, (mISDNport->b_mode[i]==B_MODE_HDLC)?ISDN_P_B_HDLC:ISDN_P_B_RAW);
+       mISDNport->b_sock[i].fd = socket(PF_ISDN, SOCK_DGRAM, (mISDNport->b_mode[i]==B_MODE_HDLC)?ISDN_P_B_L2DSPHDLC:ISDN_P_B_L2DSP);
+       if (mISDNport->b_sock[i].fd < 0) {
+               PERROR("Error: Failed to open bchannel-socket for index %d with mISDN-DSP layer. Did you load mISDN_dsp.ko?\n", i);
                return(0);
        }
 
+       /* register callback for read */
+       register_fd(&mISDNport->b_sock[i], LCR_FD_READ, b_sock_callback, mISDNport, i);
+       
        /* bind socket to bchannel */
        addr.family = AF_ISDN;
-       addr.dev = mISDNport->portnum-1;
+       addr.dev = mISDNport->portnum;
        addr.channel = i+1+(i>=15);
-       ret = bind(mISDNport->b_socket[i], (struct sockaddr *)&addr, sizeof(addr));
-       if (ret < 0)
-       {
-               PERROR("Error: Failed to bind bchannel-socket for index %d with mISDN-DSP layer. Did you load mISDNdsp.ko?\n", i);
-               close(mISDNport->b_socket[i]);
-               mISDNport->b_socket[i] = -1;
+       ret = bind(mISDNport->b_sock[i].fd, (struct sockaddr *)&addr, sizeof(addr));
+       if (ret < 0) {
+               PERROR("Error: Failed to bind bchannel-socket for index %d with mISDN-DSP layer (errno=%d). Did you load mISDN_dsp.ko?\n", i, errno);
+               close(mISDNport->b_sock[i].fd);
+               unregister_fd(&mISDNport->b_sock[i]);
                return(0);
        }
 
        chan_trace_header(mISDNport, mISDNport->b_port[i], "BCHANNEL create socket", DIRECTION_OUT);
        add_trace("channel", NULL, "%d", i+1+(i>=15));
-       add_trace("socket", NULL, "%d", mISDNport->b_socket[i]);
-       end_trace();
-
-       return(1);
-#else
-       unsigned char buff[1024];
-       layer_info_t li;
-       mISDN_pid_t pid;
-
-       if (!mISDNport->b_stid[i])
-       {
-               PERROR("Error: no stack for index %d\n", i);
-               return(0);
-       }
-       if (mISDNport->b_addr[i])
-       {
-               PERROR("Error: stack already created for index %d\n", i);
-               return(0);
-       }
-
-       /* create new layer */
-       PDEBUG(DEBUG_BCHANNEL, "creating new layer for bchannel %d (index %d).\n" , i+1+(i>=15), i);
-       memset(&li, 0, sizeof(li));
-       memset(&pid, 0, sizeof(pid));
-       li.object_id = -1;
-       li.extentions = 0;
-       li.st = mISDNport->b_stid[i];
-       UCPY(li.name, "B L4");
-       li.pid.layermask = ISDN_LAYER((4));
-       li.pid.protocol[4] = ISDN_PID_L4_B_USER;
-       ret = mISDN_new_layer(mISDNdevice, &li);
-       if (ret)
-       {
-               failed_new_layer:
-               PERROR("mISDN_new_layer() failed to add bchannel %d (index %d)\n", i+1+(i>=15), i);
-               goto failed;
-       }
-       mISDNport->b_addr[i] = li.id;
-       if (!li.id)
-       {
-               goto failed_new_layer;
-       }
-       PDEBUG(DEBUG_BCHANNEL, "new layer (b_addr=0x%x)\n", mISDNport->b_addr[i]);
-
-       /* create new stack */
-       pid.protocol[1] = ISDN_PID_L1_B_64TRANS;
-       pid.protocol[2] = ISDN_PID_L2_B_TRANS;
-       pid.protocol[3] = ISDN_PID_L3_B_DSP;
-       pid.protocol[4] = ISDN_PID_L4_B_USER;
-       pid.layermask = ISDN_LAYER((1)) | ISDN_LAYER((2)) | ISDN_LAYER((3)) | ISDN_LAYER((4));
-       ret = mISDN_set_stack(mISDNdevice, mISDNport->b_stid[i], &pid);
-       if (ret)
-       {
-               stack_error:
-               PERROR("mISDN_set_stack() failed (ret=%d) to add bchannel (index %d) stid=0x%x\n", ret, i, mISDNport->b_stid[i]);
-               mISDN_write_frame(mISDNdevice, buff, mISDNport->b_addr[i], MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
-               goto failed;
-       }
-       ret = mISDN_get_setstack_ind(mISDNdevice, mISDNport->b_addr[i]);
-       if (ret)
-               goto stack_error;
-
-       /* get layer id */
-       mISDNport->b_addr[i] = mISDN_get_layerid(mISDNdevice, mISDNport->b_stid[i], 4);
-       if (!mISDNport->b_addr[i])
-               goto stack_error;
-       chan_trace_header(mISDNport, mISDNport->b_port[i], "BCHANNEL create stack", DIRECTION_OUT);
-       add_trace("channel", NULL, "%d", i+1+(i>=15));
-       add_trace("stack", "id", "0x%08x", mISDNport->b_stid[i]);
-       add_trace("stack", "address", "0x%08x", mISDNport->b_addr[i]);
+       add_trace("socket", NULL, "%d", mISDNport->b_sock[i].fd);
        end_trace();
 
        return(1);
-
-failed:
-       mISDNport->b_addr[i] = 0;
-       return(0);
-#endif
 }
 
 
@@ -667,34 +442,23 @@ failed:
  * subfunction for bchannel_event
  * activate / deactivate request
  */
-static void _bchannel_activate(struct mISDNport *mISDNport, int i, int activate)
+static void _bchannel_activate(struct mISDNport *mISDNport, int i, int activate, int timeout)
 {
-#ifdef SOCKET_MISDN
        struct mISDNhead act;
        int ret;
 
-       if (mISDNport->b_socket[i] < 0)
+       if (!mISDNport->b_sock[i].inuse)
                return;
        act.prim = (activate)?PH_ACTIVATE_REQ:PH_DEACTIVATE_REQ; 
        act.id = 0;
-       ret = sendto(mISDNport->b_socket[i], &act, MISDN_HEADER_LEN, 0, NULL, 0);
+       ret = sendto(mISDNport->b_sock[i].fd, &act, MISDN_HEADER_LEN, 0, NULL, 0);
        if (ret <= 0)
-               PERROR("Failed to send to socket %d\n", mISDNport->b_socket[i]);
-#else
-       iframe_t act;
-
-       /* activate bchannel */
-       act.prim = (activate?DL_ESTABLISH:DL_RELEASE) | REQUEST; 
-       act.addr = mISDNport->b_addr[i] | FLG_MSG_DOWN;
-       act.dinfo = 0;
-       act.len = 0;
-       mISDN_write(mISDNdevice, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
-#endif
+               PERROR("Failed to send to socket %d\n", mISDNport->b_sock[i].fd);
 
        /* trace */
-       chan_trace_header(mISDNport, mISDNport->b_port[i], activate?(char*)"BCHANNEL activate":(char*)"BCHANNEL deactivate", DIRECTION_OUT);
+       chan_trace_header(mISDNport, mISDNport->b_port[i], activate ? "BCHANNEL activate" : "BCHANNEL deactivate", DIRECTION_OUT);
        add_trace("channel", NULL, "%d", i+1+(i>=15));
-       if (mISDNport->b_timer[i])
+       if (timeout)
                add_trace("event", NULL, "timeout recovery");
        end_trace();
 }
@@ -707,15 +471,14 @@ static void _bchannel_activate(struct mISDNport *mISDNport, int i, int activate)
 static void _bchannel_configure(struct mISDNport *mISDNport, int i)
 {
        struct PmISDN *port;
-#ifdef SOCKET_MISDN
-       int handle;
+       int handle, mode;
 
-       if (mISDNport->b_socket[i] < 0)
+       if (!mISDNport->b_sock[i].inuse)
                return;
-       handle = mISDNport->b_socket[i];
+       handle = mISDNport->b_sock[i].fd;
        port = mISDNport->b_port[i];
-       if (!port)
-       {
+       mode = mISDNport->b_mode[i];
+       if (!port) {
                PERROR("bchannel index i=%d not associated with a port object\n", i);
                return;
        }
@@ -723,103 +486,59 @@ static void _bchannel_configure(struct mISDNport *mISDNport, int i)
        /* set dsp features */
        if (port->p_m_txdata)
                ph_control(mISDNport, port, handle, (port->p_m_txdata)?DSP_TXDATA_ON:DSP_TXDATA_OFF, 0, "DSP-TXDATA", port->p_m_txdata);
-       if (port->p_m_delay)
+       if (port->p_m_delay && mode == B_MODE_TRANSPARENT)
                ph_control(mISDNport, port, handle, DSP_DELAY, port->p_m_delay, "DSP-DELAY", port->p_m_delay);
-       if (port->p_m_tx_gain)
+       if (port->p_m_tx_dejitter && mode == B_MODE_TRANSPARENT)
+               ph_control(mISDNport, port, handle, DSP_TX_DEJITTER, port->p_m_tx_dejitter, "DSP-TX_DEJITTER", port->p_m_tx_dejitter);
+       if (port->p_m_tx_gain && mode == B_MODE_TRANSPARENT)
                ph_control(mISDNport, port, handle, DSP_VOL_CHANGE_TX, port->p_m_tx_gain, "DSP-TX_GAIN", port->p_m_tx_gain);
-       if (port->p_m_rx_gain)
+       if (port->p_m_rx_gain && mode == B_MODE_TRANSPARENT)
                ph_control(mISDNport, port, handle, DSP_VOL_CHANGE_RX, port->p_m_rx_gain, "DSP-RX_GAIN", port->p_m_rx_gain);
-       if (port->p_m_pipeline[0])
+       if (port->p_m_pipeline[0] && mode == B_MODE_TRANSPARENT)
                ph_control_block(mISDNport, port, handle, DSP_PIPELINE_CFG, port->p_m_pipeline, strlen(port->p_m_pipeline)+1, "DSP-PIPELINE", 0);
-       if (port->p_m_conf)
+       if (port->p_m_conf && !port->p_m_mute)
                ph_control(mISDNport, port, handle, DSP_CONF_JOIN, port->p_m_conf, "DSP-CONF", port->p_m_conf);
        if (port->p_m_echo)
                ph_control(mISDNport, port, handle, DSP_ECHO_ON, 0, "DSP-ECHO", 1);
-       if (port->p_m_tone)
+       if (port->p_m_tone && mode == B_MODE_TRANSPARENT)
                ph_control(mISDNport, port, handle, DSP_TONE_PATT_ON, port->p_m_tone, "DSP-TONE", port->p_m_tone);
        if (port->p_m_rxoff)
                ph_control(mISDNport, port, handle, DSP_RECEIVE_OFF, 0, "DSP-RXOFF", 1);
-//     if (port->p_m_txmix)
+//     if (port->p_m_txmix && mode == B_MODE_TRANSPARENT)
 //             ph_control(mISDNport, port, handle, DSP_MIX_ON, 0, "DSP-MIX", 1);
-       if (port->p_m_dtmf)
+       if (port->p_m_dtmf && mode == B_MODE_TRANSPARENT)
                ph_control(mISDNport, port, handle, DTMF_TONE_START, 0, "DSP-DTMF", 1);
-       if (port->p_m_crypt)
+       if (port->p_m_crypt && mode == B_MODE_TRANSPARENT)
                ph_control_block(mISDNport, port, handle, DSP_BF_ENABLE_KEY, port->p_m_crypt_key, port->p_m_crypt_key_len, "DSP-CRYPT", port->p_m_crypt_key_len);
-#else
-       unsigned long handle;
+}
 
-       handle = mISDNport->b_addr[i];
-       port = mISDNport->b_port[i];
-       if (!port)
-       {
-               PERROR("bchannel index i=%d not associated with a port object\n", i);
-               return;
-       }
 
-       /* set dsp features */
-#ifndef OLD_MISDN
-       if (port->p_m_txdata)
-               ph_control(mISDNport, port, handle, (port->p_m_txdata)?CMX_TXDATA_ON:CMX_TXDATA_OFF, 0, "DSP-TXDATA", port->p_m_txdata);
-       if (port->p_m_delay)
-               ph_control(mISDNport, port, handle, CMX_DELAY, port->p_m_delay, "DSP-DELAY", port->p_m_delay);
-#endif
-       if (port->p_m_tx_gain)
-               ph_control(mISDNport, port, handle, VOL_CHANGE_TX, port->p_m_tx_gain, "DSP-TX_GAIN", port->p_m_tx_gain);
-       if (port->p_m_rx_gain)
-               ph_control(mISDNport, port, handle, VOL_CHANGE_RX, port->p_m_rx_gain, "DSP-RX_GAIN", port->p_m_rx_gain);
-#ifndef OLD_MISDN
-       if (port->p_m_pipeline[0])
-               ph_control_block(mISDNport, port, handle, PIPELINE_CFG, port->p_m_pipeline, strlen(port->p_m_pipeline)+1, "DSP-PIPELINE", 0);
-#endif
-       if (port->p_m_conf)
-               ph_control(mISDNport, port, handle, CMX_CONF_JOIN, port->p_m_conf, "DSP-CONF", port->p_m_conf);
-       if (port->p_m_echo)
-               ph_control(mISDNport, port, handle, CMX_ECHO_ON, 0, "DSP-ECHO", 1);
-       if (port->p_m_tone)
-               ph_control(mISDNport, port, handle, TONE_PATT_ON, port->p_m_tone, "DSP-TONE", port->p_m_tone);
-       if (port->p_m_rxoff)
-               ph_control(mISDNport, port, handle, CMX_RECEIVE_OFF, 0, "DSP-RXOFF", 1);
-//     if (port->p_m_txmix)
-//             ph_control(mISDNport, port, handle, CMX_MIX_ON, 0, "DSP-MIX", 1);
-       if (port->p_m_dtmf)
-               ph_control(mISDNport, port, handle, DTMF_TONE_START, 0, "DSP-DTMF", 1);
-       if (port->p_m_crypt)
-               ph_control_block(mISDNport, port, handle, BF_ENABLE_KEY, port->p_m_crypt_key, port->p_m_crypt_key_len, "DSP-CRYPT", port->p_m_crypt_key_len);
-#endif
+void PmISDN::set_conf(int oldconf, int newconf)
+{
+               if (oldconf != newconf) {
+                       PDEBUG(DEBUG_BCHANNEL, "we change conference from conf=%d to conf=%d.\n", oldconf, newconf);
+                       if (p_m_b_index > -1)
+                       if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
+                               ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, (newconf)?DSP_CONF_JOIN:DSP_CONF_SPLIT, newconf, "DSP-CONF", newconf);
+               } else
+                       PDEBUG(DEBUG_BCHANNEL, "we already have conf=%d.\n", newconf);
 }
 
+
 /*
  * subfunction for bchannel_event
  * destroy stack
  */
 static void _bchannel_destroy(struct mISDNport *mISDNport, int i)
 {
-#ifdef SOCKET_MISDN
-       if (mISDNport->b_socket[i] < 0)
+       if (!mISDNport->b_sock[i].inuse)
                return;
        chan_trace_header(mISDNport, mISDNport->b_port[i], "BCHANNEL remove socket", DIRECTION_OUT);
        add_trace("channel", NULL, "%d", i+1+(i>=15));
-       add_trace("socket", NULL, "%d", mISDNport->b_socket[i]);
-       end_trace();
-       close(mISDNport->b_socket[i]);
-       mISDNport->b_socket[i] = -1;
-#else
-       unsigned char buff[1024];
-
-       chan_trace_header(mISDNport, mISDNport->b_port[i], "BCHANNEL remove stack", DIRECTION_OUT);
-       add_trace("channel", NULL, "%d", i+1+(i>=15));
-       add_trace("stack", "id", "0x%08x", mISDNport->b_stid[i]);
-       add_trace("stack", "address", "0x%08x", mISDNport->b_addr[i]);
+       add_trace("socket", NULL, "%d", mISDNport->b_sock[i].fd);
        end_trace();
-       /* remove our stack only if set */
-       if (mISDNport->b_addr[i])
-       {
-               PDEBUG(DEBUG_BCHANNEL, "free stack (b_addr=0x%x)\n", mISDNport->b_addr[i]);
-               mISDN_clear_stack(mISDNdevice, mISDNport->b_stid[i]);
-               mISDN_write_frame(mISDNdevice, buff, mISDNport->b_addr[i] | FLG_MSG_DOWN, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
-               mISDNport->b_addr[i] = 0;
-       }
-#endif
+       close(mISDNport->b_sock[i].fd);
+       unregister_fd(&mISDNport->b_sock[i]);
 }
 
 
@@ -849,27 +568,10 @@ It may be linked to a Port class, that likes to reactivate it.
 See above.
 After deactivating bchannel, and if not used, the bchannel becomes idle again.
 
-Also the bchannel may be exported, but only if the state is or becomes idle:
-
-- B_STATE_EXPORTING
-The bchannel assignment has been sent to the remove application.
-
-- B_STATE_REMOTE
-The bchannel assignment is acknowledged by the remote application.
-
-- B_STATE_IMPORTING
-The bchannel is re-imported by mISDN port object.
-
-- B_STATE_IDLE
-See above.
-After re-importing bchannel, and if not used, the bchannel becomes idle again.
-
-
 A bchannel can have the following events:
 
 - B_EVENT_USE
 A bchannel is required by a Port class.
-The bchannel shall be exported to the remote application.
 
 - B_EVENT_ACTIVATED
 The bchannel beomes active.
@@ -880,27 +582,8 @@ The bchannel is not required by Port class anymore
 - B_EVENT_DEACTIVATED
 The bchannel becomes inactive.
 
-- B_EVENT_EXPORTED
-The bchannel is now used by remote application.
-
-- B_EVENT_IMPORTED
-The bchannel is not used by remote application.
-
 All actions taken on these events depend on the current bchannel's state and if it is linked to a Port class.
 
-if an export request is receive by remote application, p_m_remote_* is set.
-the b_remote_*[index] indicates if and where the channel is exported to. (set from the point on, where export is initiated, until imported is acknowledged.)
-- set on export request from remote application (if port is assigned)
-- set on channel use, if requested by remote application (p_m_remote_*)
-- cleared on drop request
-
-the bchannel will be exported with ref and stack given. remote application uses the ref to link bchannel to the call.
-the bchannel will be imported with stack given only. remote application must store stack id with the bchannel process.
-the bchannel import/export is acknowledged with stack given.
-
-if exporting, b_remote_*[index] is set to the remote socket id.
-if importing has been acknowledged. b_remote_*[index] is cleared.
-
 */
 
 /*
@@ -914,25 +597,15 @@ void bchannel_event(struct mISDNport *mISDNport, int i, int event)
 {
        class PmISDN *b_port = mISDNport->b_port[i];
        int state = mISDNport->b_state[i];
-       double timer = mISDNport->b_timer[i];
-       unsigned long p_m_remote_ref = 0;
-       unsigned long p_m_remote_id = 0;
+       int timer = -1; // no change
        int p_m_tx_gain = 0;
        int p_m_rx_gain = 0;
        char *p_m_pipeline = NULL;
        unsigned char *p_m_crypt_key = NULL;
        int p_m_crypt_key_len = 0;
        int p_m_crypt_key_type = 0;
-#ifdef SOCKET_MISDN
-       unsigned long portid = (mISDNport->portnum<<8) + i+1+(i>=15);
-#else
-       unsigned long portid = mISDNport->b_stid[i];
-#endif
 
-       if (b_port)
-       {
-               p_m_remote_id = b_port->p_m_remote_id;
-               p_m_remote_ref = b_port->p_m_remote_ref;
+       if (b_port) {
                p_m_tx_gain = b_port->p_m_tx_gain;
                p_m_rx_gain = b_port->p_m_rx_gain;
                p_m_pipeline = b_port->p_m_pipeline;
@@ -941,162 +614,49 @@ void bchannel_event(struct mISDNport *mISDNport, int i, int event)
                p_m_crypt_key_type = /*b_port->p_m_crypt_key_type*/1;
        }
 
-       switch(event)
-       {
+       switch(event) {
                case B_EVENT_USE:
                /* port must be linked in order to allow activation */
                if (!b_port)
                        FATAL("bchannel must be linked to a Port class\n");
-               switch(state)
-               {
+               switch(state) {
                        case B_STATE_IDLE:
-                       if (p_m_remote_ref)
-                       {
-                               /* export bchannel */
-                               message_bchannel_to_join(p_m_remote_id, p_m_remote_ref, BCHANNEL_ASSIGN, portid, p_m_tx_gain, p_m_rx_gain, p_m_pipeline, p_m_crypt_key, p_m_crypt_key_len, p_m_crypt_key_type);
-                               chan_trace_header(mISDNport, b_port, "MESSAGE_BCHANNEL (to remote application)", DIRECTION_NONE);
-                               add_trace("type", NULL, "assign");
-#ifdef SOCKET_MISDN
-                               add_trace("channel", NULL, "%d.%d", portid>>8, portid&0xff);
-#else
-                               add_trace("socket", "id", "%d", portid);
-#endif
-                               end_trace();
-                               state = B_STATE_EXPORTING;
-                               mISDNport->b_remote_id[i] = p_m_remote_id;
-                               mISDNport->b_remote_ref[i] = p_m_remote_ref;
-                       } else
-                       {
-                               /* create stack and send activation request */
-                               if (_bchannel_create(mISDNport, i))
-                               {
-                                       _bchannel_activate(mISDNport, i, 1);
-                                       state = B_STATE_ACTIVATING;
-                                       timer = now_d + B_TIMER_ACTIVATING;
-                               }
+                       /* create stack and send activation request */
+                       if (_bchannel_create(mISDNport, i)) {
+                               _bchannel_activate(mISDNport, i, 1, 0);
+                               state = B_STATE_ACTIVATING;
+                               timer = B_TIMER_ACTIVATING;
                        }
                        break;
 
                        case B_STATE_ACTIVATING:
-                       case B_STATE_EXPORTING:
                        /* do nothing, because it is already activating */
                        break;
 
-                       case B_STATE_DEACTIVATING:
-                       case B_STATE_IMPORTING:
-                       /* do nothing, because we must wait until we can reactivate */
-                       break;
-
                        default:
                        /* problems that might ocurr:
                         * B_EVENT_USE is received when channel already in use.
-                        * bchannel exported, but not freed by other port
                         */
                        PERROR("Illegal event %d at state %d, please correct.\n", event, state);
                }
                break;
 
-               case B_EVENT_EXPORTREQUEST:
-               /* special case where the bchannel is requested by remote */
-               if (!p_m_remote_ref)
-               {
-                       PERROR("export request without remote channel set, please correct.\n");
-                       break;
-               }
-               switch(state)
-               {
-                       case B_STATE_IDLE:
-                       /* in case, the bchannel is exported right after seize_bchannel */
-                       /* export bchannel */
-                       /* p_m_remote_id is set, when this event happens. */
-                       message_bchannel_to_join(p_m_remote_id, p_m_remote_ref, BCHANNEL_ASSIGN, portid, p_m_tx_gain, p_m_rx_gain, p_m_pipeline, p_m_crypt_key, p_m_crypt_key_len, p_m_crypt_key_type);
-                       chan_trace_header(mISDNport, b_port, "MESSAGE_BCHANNEL (to remote application)", DIRECTION_NONE);
-                       add_trace("type", NULL, "assign");
-#ifdef SOCKET_MISDN
-                       add_trace("channel", NULL, "%d.%d", portid>>8, portid&0xff);
-#else
-                       add_trace("socket", "id", "%d", portid);
-#endif
-                       end_trace();
-                       state = B_STATE_EXPORTING;
-                       mISDNport->b_remote_id[i] = p_m_remote_id;
-                       mISDNport->b_remote_ref[i] = p_m_remote_ref;
-                       break;
-
-                       case B_STATE_ACTIVATING:
-                       case B_STATE_EXPORTING:
-                       /* do nothing, because it is already activating */
-                       break;
-
-                       case B_STATE_DEACTIVATING:
-                       case B_STATE_IMPORTING:
-                       /* do nothing, because we must wait until we can reactivate */
-                       break;
-
-                       case B_STATE_ACTIVE:
-                       /* bchannel is active, so we deactivate */
-                       _bchannel_activate(mISDNport, i, 0);
-                       state = B_STATE_DEACTIVATING;
-                       timer = now_d + B_TIMER_DEACTIVATING;
-                       break;
-
-                       default:
-                       /* problems that might ocurr:
-                        * ... when channel already in use.
-                        * bchannel exported, but not freed by other port
-                        */
-                       PERROR("Illegal event %d at state %d, please correct.\n", event, state);
-               }
-               break;
 
                case B_EVENT_ACTIVATED:
                timer = 0;
-               switch(state)
-               {
+               switch(state) {
                        case B_STATE_ACTIVATING:
-                       if (b_port && !p_m_remote_id)
-                       {
+                       if (b_port) {
                                /* bchannel is active and used by Port class, so we configure bchannel */
                                _bchannel_configure(mISDNport, i);
                                state = B_STATE_ACTIVE;
-                       } else
-                       {
-                               /* bchannel is active, but exported OR not used anymore (or has wrong stack config), so we deactivate */
-                               _bchannel_activate(mISDNport, i, 0);
+                               b_port->p_m_load = 0;
+                               b_port->update_load();
+                       } else {
+                               /* bchannel is active, but not used anymore (or has wrong stack config), so we deactivate */
+                               _bchannel_activate(mISDNport, i, 0, 0);
                                state = B_STATE_DEACTIVATING;
-                               timer = now_d + B_TIMER_DEACTIVATING;
-                       }
-                       break;
-
-                       default:
-                       PERROR("Illegal event %d at state %d, please correct.\n", event, state);
-               }
-               break;
-
-               case B_EVENT_EXPORTED:
-               switch(state)
-               {
-                       case B_STATE_EXPORTING:
-                       if (b_port && p_m_remote_ref && p_m_remote_ref==mISDNport->b_remote_ref[i])
-                       {
-                               /* remote export done */
-                               state = B_STATE_REMOTE;
-                       } else
-                       {
-                               /* bchannel is now exported, but we need bchannel back
-                                * OR bchannel is not used anymore
-                                * OR bchannel has been exported to an obsolete ref,
-                                * so reimport, to later export to new remote */
-                               message_bchannel_to_join(mISDNport->b_remote_id[i], 0, BCHANNEL_REMOVE, portid, 0,0,0,0,0,0);
-                               chan_trace_header(mISDNport, b_port, "MESSAGE_BCHANNEL (to remote application)", DIRECTION_NONE);
-                               add_trace("type", NULL, "remove");
-#ifdef SOCKET_MISDN
-                               add_trace("channel", NULL, "%d.%d", portid>>8, portid&0xff);
-#else
-                               add_trace("socket", "id", "%d", portid);
-#endif
-                               end_trace();
-                               state = B_STATE_IMPORTING;
+                               timer = B_TIMER_DEACTIVATING;
                        }
                        break;
 
@@ -1108,40 +668,23 @@ void bchannel_event(struct mISDNport *mISDNport, int i, int event)
                case B_EVENT_DROP:
                if (!b_port)
                        FATAL("bchannel must be linked to a Port class\n");
-               switch(state)
-               {
+               switch(state) {
                        case B_STATE_IDLE:
                        /* bchannel is idle due to an error, so we do nothing */
                        break;
 
                        case B_STATE_ACTIVATING:
-                       case B_STATE_EXPORTING:
                        /* do nothing because we must wait until bchanenl is active before deactivating */
                        break;
 
                        case B_STATE_ACTIVE:
                        /* bchannel is active, so we deactivate */
-                       _bchannel_activate(mISDNport, i, 0);
+                       _bchannel_activate(mISDNport, i, 0, 0);
                        state = B_STATE_DEACTIVATING;
-                       timer = now_d + B_TIMER_DEACTIVATING;
-                       break;
-
-                       case B_STATE_REMOTE:
-                       /* bchannel is exported, so we re-import */
-                       message_bchannel_to_join(mISDNport->b_remote_id[i], 0, BCHANNEL_REMOVE, portid, 0,0,0,0,0,0);
-                       chan_trace_header(mISDNport, b_port, "MESSAGE_BCHANNEL (to remote application)", DIRECTION_NONE);
-                       add_trace("type", NULL, "remove");
-#ifdef SOCKET_MISDN
-                       add_trace("channel", NULL, "%d.%d", portid>>8, portid&0xff);
-#else
-                       add_trace("socket", "id", "%d", portid);
-#endif
-                       end_trace();
-                       state = B_STATE_IMPORTING;
+                       timer = B_TIMER_DEACTIVATING;
                        break;
 
                        case B_STATE_DEACTIVATING:
-                       case B_STATE_IMPORTING:
                        /* we may have taken an already deactivating bchannel, but do not require it anymore, so we do nothing */
                        break;
 
@@ -1152,8 +695,7 @@ void bchannel_event(struct mISDNport *mISDNport, int i, int event)
 
                case B_EVENT_DEACTIVATED:
                timer = 0;
-               switch(state)
-               {
+               switch(state) {
                        case B_STATE_IDLE:
                        /* ignore due to deactivation confirm after unloading */
                        break;
@@ -1161,31 +703,12 @@ void bchannel_event(struct mISDNport *mISDNport, int i, int event)
                        case B_STATE_DEACTIVATING:
                        _bchannel_destroy(mISDNport, i);
                        state = B_STATE_IDLE;
-                       if (b_port)
-                       {
-                               /* bchannel is now deactivate, but is requied by Port class, so we reactivate / export */
-                               if (p_m_remote_ref)
-                               {
-                                       message_bchannel_to_join(p_m_remote_id, p_m_remote_ref, BCHANNEL_ASSIGN, portid, p_m_tx_gain, p_m_rx_gain, p_m_pipeline, p_m_crypt_key, p_m_crypt_key_len, p_m_crypt_key_type);
-                                       chan_trace_header(mISDNport, b_port, "MESSAGE_BCHANNEL (to remote application)", DIRECTION_NONE);
-                                       add_trace("type", NULL, "assign");
-#ifdef SOCKET_MISDN
-                                       add_trace("channel", NULL, "%d.%d", portid>>8, portid&0xff);
-#else
-                                       add_trace("socket", "id", "%d", portid);
-#endif
-                                       end_trace();
-                                       state = B_STATE_EXPORTING;
-                                       mISDNport->b_remote_id[i] = p_m_remote_id;
-                                       mISDNport->b_remote_ref[i] = p_m_remote_ref;
-                               } else
-                               {
-                                       if (_bchannel_create(mISDNport, i))
-                                       {
-                                               _bchannel_activate(mISDNport, i, 1);
-                                               state = B_STATE_ACTIVATING;
-                                               timer = now_d + B_TIMER_ACTIVATING;
-                                       }
+                       if (b_port) {
+                               /* bchannel is now deactivate, but is requied by Port class, so we reactivate */
+                               if (_bchannel_create(mISDNport, i)) {
+                                       _bchannel_activate(mISDNport, i, 1, 0);
+                                       state = B_STATE_ACTIVATING;
+                                       timer = B_TIMER_ACTIVATING;
                                }
                        }
                        break;
@@ -1195,64 +718,21 @@ void bchannel_event(struct mISDNport *mISDNport, int i, int event)
                }
                break;
 
-               case B_EVENT_IMPORTED:
-               switch(state)
-               {
-                       case B_STATE_IMPORTING:
-                       state = B_STATE_IDLE;
-                       mISDNport->b_remote_id[i] = 0;
-                       mISDNport->b_remote_ref[i] = 0;
-                       if (b_port)
-                       {
-                               /* bchannel is now imported, but is requied by Port class, so we reactivate / export */
-                               if (p_m_remote_ref)
-                               {
-                                       message_bchannel_to_join(p_m_remote_id, p_m_remote_ref, BCHANNEL_ASSIGN, portid, p_m_tx_gain, p_m_rx_gain, p_m_pipeline, p_m_crypt_key, p_m_crypt_key_len, p_m_crypt_key_type);
-                                       chan_trace_header(mISDNport, b_port, "MESSAGE_BCHANNEL (to remote application)", DIRECTION_NONE);
-                                       add_trace("type", NULL, "assign");
-#ifdef SOCKET_MISDN
-                                       add_trace("channel", NULL, "%d.%d", portid>>8, portid&0xff);
-#else
-                                       add_trace("socket", "id", "%d", portid);
-#endif
-                                       end_trace();
-                                       state = B_STATE_EXPORTING;
-                                       mISDNport->b_remote_id[i] = p_m_remote_id;
-                                       mISDNport->b_remote_ref[i] = p_m_remote_ref;
-                               } else
-                               {
-                                       if (_bchannel_create(mISDNport, i))
-                                       {
-                                               _bchannel_activate(mISDNport, i, 1);
-                                               state = B_STATE_ACTIVATING;
-                                               timer = now_d + B_TIMER_ACTIVATING;
-                                       }
-                               }
-                       }
-                       break;
-
-                       default:
-                       /* ignore, because not assigned */
-                       ;
-               }
-               break;
-
                case B_EVENT_TIMEOUT:
                timer = 0;
-               switch(state)
-               {
+               switch(state) {
                        case B_STATE_IDLE:
                        /* ignore due to deactivation confirm after unloading */
                        break;
 
                        case B_STATE_ACTIVATING:
-                       _bchannel_activate(mISDNport, i, 1);
-                       timer = now_d + B_TIMER_ACTIVATING;
+                       _bchannel_activate(mISDNport, i, 1, 1);
+                       timer = B_TIMER_ACTIVATING;
                        break;
 
                        case B_STATE_DEACTIVATING:
-                       _bchannel_activate(mISDNport, i, 0);
-                       timer = now_d + B_TIMER_DEACTIVATING;
+                       _bchannel_activate(mISDNport, i, 0, 1);
+                       timer = B_TIMER_DEACTIVATING;
                        break;
 
                        default:
@@ -1265,7 +745,10 @@ void bchannel_event(struct mISDNport *mISDNport, int i, int event)
        }
 
        mISDNport->b_state[i] = state;
-       mISDNport->b_timer[i] = timer;
+       if (timer == 0)
+               unsched_timer(&mISDNport->b_timer[i]);
+       else if (timer > 0)
+               schedule_timer(&mISDNport->b_timer[i], timer, 0);
 }
 
 
@@ -1301,8 +784,7 @@ int PmISDN::seize_bchannel(int channel, int exclusive)
                return(-6); /* channel unacceptable */
 
        /* request exclusive channel */
-       if (exclusive && channel>0)
-       {
+       if (exclusive && channel>0) {
                i = channel-1-(channel>16);
                if (p_m_mISDNport->b_port[i])
                        return(-44); /* requested channel not available */
@@ -1310,8 +792,7 @@ int PmISDN::seize_bchannel(int channel, int exclusive)
        }
 
        /* ask for channel */
-       if (channel>0)
-       {
+       if (channel>0) {
                i = channel-1-(channel>16);
                if (p_m_mISDNport->b_port[i] == NULL)
                        goto seize;
@@ -1319,10 +800,8 @@ int PmISDN::seize_bchannel(int channel, int exclusive)
 
        /* search for channel */
        i = 0;
-       while(i < p_m_mISDNport->b_num)
-       {
-               if (!p_m_mISDNport->b_port[i])
-               {
+       while(i < p_m_mISDNport->b_num) {
+               if (!p_m_mISDNport->b_port[i]) {
                        channel = i+1+(i>=15);
                        goto seize;
                }
@@ -1333,15 +812,15 @@ int PmISDN::seize_bchannel(int channel, int exclusive)
 seize:
        PDEBUG(DEBUG_BCHANNEL, "PmISDN(%s) seizing bchannel %d (index %d)\n", p_name, channel, i);
 
-       /* link Port */
+       /* link Port, set parameters */
        p_m_mISDNport->b_port[i] = this;
        p_m_b_index = i;
        p_m_b_channel = channel;
        p_m_b_exclusive = exclusive;
+       p_m_mISDNport->b_mode[i] = p_m_b_mode;
 
        /* reserve channel */
-       if (!p_m_b_reserve)
-       {
+       if (!p_m_b_reserve) {
                p_m_b_reserve = 1;
                p_m_mISDNport->b_reserved++;
        }
@@ -1371,109 +850,12 @@ void PmISDN::drop_bchannel(void)
        if (p_m_mISDNport->b_state[p_m_b_index] != B_STATE_IDLE)
                bchannel_event(p_m_mISDNport, p_m_b_index, B_EVENT_DROP);
        p_m_mISDNport->b_port[p_m_b_index] = NULL;
+       p_m_mISDNport->b_mode[p_m_b_index] = 0;
        p_m_b_index = -1;
        p_m_b_channel = 0;
        p_m_b_exclusive = 0;
 }
 
-/* process bchannel export/import message from join */
-void message_bchannel_from_join(class JoinRemote *joinremote, int type, unsigned long handle)
-{
-       class Endpoint *epoint;
-       class Port *port;
-       class PmISDN *isdnport;
-       struct mISDNport *mISDNport;
-       int i, ii;
-
-       switch(type)
-       {
-               case BCHANNEL_REQUEST:
-               /* find the port object for the join object ref */
-               if (!(epoint = find_epoint_id(joinremote->j_epoint_id)))
-               {
-                       PDEBUG(DEBUG_BCHANNEL, "join %d has no endpoint (anymore)\n", joinremote->j_serial);
-                       return;
-               }
-               if (!epoint->ep_portlist)
-               {
-                       PDEBUG(DEBUG_BCHANNEL, "join %d has no port (anymore in portlist)\n", joinremote->j_serial);
-                       return;
-               }
-               if (epoint->ep_portlist->next)
-               {
-                       PERROR("join %d has enpoint %d with more than one port. this shall not happen to remote joins.\n", joinremote->j_serial, epoint->ep_serial);
-               }
-               if (!(port = find_port_id(epoint->ep_portlist->port_id)))
-               {
-                       PDEBUG(DEBUG_BCHANNEL, "join %d has no port (anymore as object)\n", joinremote->j_serial);
-                       return;
-               }
-               if (!((port->p_type&PORT_CLASS_MASK) != PORT_CLASS_mISDN))
-               {
-                       PERROR("join %d has port %d not of mISDN type. This shall not happen.\n", joinremote->j_serial, port->p_serial);
-               }
-               isdnport = (class PmISDN *)port;
-
-               /* assign */
-               if (isdnport->p_m_remote_id)
-               {
-                       PERROR("join %d recevied bchannel request from remote, but channel is already assinged.\n", joinremote->j_serial);
-                       break;
-               }
-               mISDNport = isdnport->p_m_mISDNport;
-               i = isdnport->p_m_b_index;
-               chan_trace_header(mISDNport, isdnport, "MESSAGE_BCHANNEL (from remote application)", DIRECTION_NONE);
-               add_trace("type", NULL, "export request");
-               isdnport->p_m_remote_ref = joinremote->j_serial;
-               isdnport->p_m_remote_id = joinremote->j_remote_id;
-               if (mISDNport && i>=0)
-               {
-                       bchannel_event(mISDNport, i, B_EVENT_EXPORTREQUEST);
-               }
-               end_trace();
-               break;
-
-               case BCHANNEL_ASSIGN_ACK:
-               case BCHANNEL_REMOVE_ACK:
-               /* find mISDNport for stack ID */
-               mISDNport = mISDNport_first;
-               while(mISDNport)
-               {
-                       i = 0;
-                       ii = mISDNport->b_num;
-                       while(i < ii)
-                       {
-#ifdef SOCKET_MISDN
-                               if ((unsigned long)(mISDNport->portnum<<8)+i+1+(i>=15) == handle)
-#else
-                               if (mISDNport->b_addr[i] == handle)
-#endif
-                                       break;
-                               i++;
-                       }
-                       if (i != ii)
-                               break;
-                       mISDNport = mISDNport->next;
-               }
-               if (!mISDNport)
-               {
-                       PERROR("received assign/remove ack for bchannel's handle=%x, but handle does not exist in any mISDNport structure.\n", handle);
-                       break;
-               }
-               /* mISDNport may now be set or NULL */
-               
-               /* set */
-               chan_trace_header(mISDNport, mISDNport->b_port[i], "MESSAGE_BCHANNEL (from remote application)", DIRECTION_NONE);
-               add_trace("type", NULL, (type==BCHANNEL_ASSIGN_ACK)?"assign_ack":"remove_ack");
-               if (mISDNport && i>=0)
-                       bchannel_event(mISDNport, i, (type==BCHANNEL_ASSIGN_ACK)?B_EVENT_EXPORTED:B_EVENT_IMPORTED);
-               end_trace();
-               break;
-               default:
-               PERROR("received wrong bchannel message type %d from remote\n", type);
-       }
-}
-
 
 /*
  * handler
@@ -1500,88 +882,97 @@ times have no skew.
 
 * levels
 there are two levels:
-ISDN_LOAD will give the load that have to be kept in dsp.
-ISDN_MAXLOAD will give the maximum load before dropping.
+p_m_preload will give the load that have to be kept in dsp.
+ISDN_MAXLOAD (2*p_m_preload) will give the maximum load before dropping.
 
 * procedure for low priority data
 see txfromup() for procedure
 in short: remote data is ignored during high priority tones
 
 * procedure for high priority data
-whenever load is below ISDN_LOAD, load is filled up to ISDN_LOAD
+whenever load is below p_m_preload, load is filled up to p_m_preload
 if no more data is available, load becomes empty again.
 
 'load' variable:
-0                    ISDN_LOAD           ISDN_MAXLOAD
+0                    p_m_preload           ISDN_MAXLOAD
 +--------------------+----------------------+
 |                    |                      |
 +--------------------+----------------------+
 
-on empty load or on load below ISDN_LOAD, the load is inceased to ISDN_LOAD:
-0                    ISDN_LOAD           ISDN_MAXLOAD
+on empty load or on load below p_m_preload, the load is inceased to p_m_preload:
+0                    p_m_preload           ISDN_MAXLOAD
 +--------------------+----------------------+
 |TTTTTTTTTTTTTTTTTTTT|                      |
 +--------------------+----------------------+
 
-on empty load, remote-audio causes the load with the remote audio to be increased to ISDN_LOAD.
-0                    ISDN_LOAD           ISDN_MAXLOAD
+on empty load, remote-audio causes the load with the remote audio to be increased to p_m_preload.
+0                    p_m_preload           ISDN_MAXLOAD
 +--------------------+----------------------+
 |TTTTTTTTTTTTTTTTTTTTRRRRR                  |
 +--------------------+----------------------+
 
  */
-int PmISDN::handler(void)
+void PmISDN::update_load(void)
+{
+       /* don't trigger load event if event already active */
+       if (p_m_loadtimer.active)
+               return;
+
+       schedule_timer(&p_m_loadtimer, 0, 0); /* no delay the first time */
+}
+
+static int load_timer(struct lcr_timer *timer, void *instance, int index)
+{
+       class PmISDN *isdnport = (class PmISDN *)instance;
+
+       isdnport->load_tx();
+
+       return 0;
+}
+
+void PmISDN::load_tx(void)
 {
-       struct lcr_msg *message;
        int elapsed = 0;
        int ret;
-
-       if ((ret = Port::handler()))
-               return(ret);
+       struct timeval current_time;
 
        /* get elapsed */
-       if (p_m_last_tv_sec)
-       {
-               elapsed = 8000 * (now_tv.tv_sec - p_m_last_tv_sec)
-                       + 8 * (now_tv.tv_usec/1000 - p_m_last_tv_msec);
-       } else
-       {
-               /* set clock of first process ever in this instance */
-               p_m_last_tv_sec = now_tv.tv_sec;
-               p_m_last_tv_msec = now_tv.tv_usec/1000;
-       }
-       /* process only if we have a minimum of samples, to make packets not too small */
-       if (elapsed >= ISDN_TRANSMIT)
-       {
-               /* set clock of last process! */
-               p_m_last_tv_sec = now_tv.tv_sec;
-               p_m_last_tv_msec = now_tv.tv_usec/1000;
+       gettimeofday(&current_time, NULL);
+       if (p_m_last_tv_sec) {
+               elapsed = 8000 * (current_time.tv_sec - p_m_last_tv_sec)
+                       + 8 * (current_time.tv_usec/1000 - p_m_last_tv_msec);
+       }
+       /* set clock of last process! */
+       p_m_last_tv_sec = current_time.tv_sec;
+       p_m_last_tv_msec = current_time.tv_usec/1000;
+
+       /* process only if we have samples and we are active */
+       if (p_m_mISDNport->b_state[p_m_b_index] != B_STATE_ACTIVE)
+               return;
 
+       if (elapsed) {
                /* update load */
                if (elapsed < p_m_load)
                        p_m_load -= elapsed;
                else
                        p_m_load = 0;
 
-               /* to send data, tone must be active OR crypt messages must be on */
-               if ((p_tone_name[0] || p_m_crypt_msg_loops)
-                && (p_m_load < ISDN_LOAD)
-                && (p_state==PORT_STATE_CONNECT || p_m_mISDNport->tones))
-               {
-                       int tosend = ISDN_LOAD - p_m_load, length; 
-#ifdef SOCKET_MISDN
+               /* to send data, tone must be on */
+               if ((p_tone_name[0] || p_m_crypt_msg_loops || p_m_inband_send_on) /* what tones? */
+                && (p_m_load < p_m_preload) /* not too much load? */
+                && (p_state==PORT_STATE_CONNECT || p_m_mISDNport->tones || p_m_inband_send_on)) { /* connected or inband-tones? */
+                       int tosend = p_m_preload - p_m_load, length; 
                        unsigned char buf[MISDN_HEADER_LEN+tosend];
                        struct mISDNhead *frm = (struct mISDNhead *)buf;
                        unsigned char *p = buf+MISDN_HEADER_LEN;
-#else
-                       unsigned char buf[mISDN_HEADER_LEN+tosend];
-                       iframe_t *frm = (iframe_t *)buf;
-                       unsigned char *p = buf+mISDN_HEADER_LEN;
-#endif
+
+                       /* copy inband signalling (e.g. used by ss5) */
+                       if (p_m_inband_send_on && tosend) {
+                               tosend -= inband_send(p, tosend);
+                       }
 
                        /* copy crypto loops */
-                       while (p_m_crypt_msg_loops && tosend)
-                       {
+                       while (p_m_crypt_msg_loops && tosend) {
                                /* how much do we have to send */
                                length = p_m_crypt_msg_len - p_m_crypt_msg_current;
 
@@ -1594,11 +985,12 @@ int PmISDN::handler(void)
 
                                /* new position */
                                p_m_crypt_msg_current += length;
-                               if (p_m_crypt_msg_current == p_m_crypt_msg_len)
-                               {
+                               if (p_m_crypt_msg_current == p_m_crypt_msg_len) {
                                        /* next loop */
                                        p_m_crypt_msg_current = 0;
                                        p_m_crypt_msg_loops--;
+                                       if (!p_m_crypt_msg_loops)
+                                               update_rxoff();
 //                                     puts("eine loop weniger");
                                }
 
@@ -1607,103 +999,85 @@ int PmISDN::handler(void)
                        }
 
                        /* copy tones */
-                       if (p_tone_name[0] && tosend)
-                       {
+                       if (p_tone_name[0] && tosend) {
                                tosend -= read_audio(p, tosend);
                        }
 
                        /* send data */
-                       if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE && ISDN_LOAD-p_m_load-tosend > 0)
-                       {
-#ifdef SOCKET_MISDN
+                       if (p_m_preload - p_m_load - tosend > 0) {
                                frm->prim = PH_DATA_REQ;
                                frm->id = 0;
-                               ret = sendto(p_m_mISDNport->b_socket[p_m_b_index], buf, MISDN_HEADER_LEN+ISDN_LOAD-p_m_load-tosend, 0, NULL, 0);
+                               ret = sendto(p_m_mISDNport->b_sock[p_m_b_index].fd, buf, MISDN_HEADER_LEN+p_m_preload-p_m_load-tosend, 0, NULL, 0);
                                if (ret <= 0)
-                                       PERROR("Failed to send to socket %d (samples = %d)\n", p_m_mISDNport->b_socket[p_m_b_index], ISDN_LOAD-p_m_load-tosend);
-#else
-                               frm->prim = DL_DATA | REQUEST; 
-                               frm->addr = p_m_mISDNport->b_addr[p_m_b_index] | FLG_MSG_DOWN;
-                               frm->dinfo = 0;
-                               frm->len = ISDN_LOAD - p_m_load - tosend;
-                               if (frm->len)
-                                       mISDN_write(mISDNdevice, frm, mISDN_HEADER_LEN+frm->len, TIMEOUT_1SEC);
-#endif
+                                       PERROR("Failed to send to socket %d (samples = %d)\n", p_m_mISDNport->b_sock[p_m_b_index].fd, p_m_preload-p_m_load-tosend);
+                               p_m_load += p_m_preload - p_m_load - tosend;
                        }
-                       p_m_load += ISDN_LOAD - p_m_load - tosend;
                }
        }
 
-       // NOTE: deletion is done by the child class
-
-       /* handle timeouts */
-       if (p_m_timeout)
-       {
-               if (p_m_timer+p_m_timeout < now_d)
-               {
-                       PDEBUG(DEBUG_ISDN, "(%s) timeout after %d seconds detected (state=%d).\n", p_name, p_m_timeout, p_state);
-                       p_m_timeout = 0;
-                       /* send timeout to endpoint */
-                       message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_TIMEOUT);
-                       message->param.state = p_state;
-                       message_put(message);
-                       return(1);
-               }
-       }
-       
-       return(0); /* nothing done */
+       schedule_timer(&p_m_loadtimer, 0, PORT_TRANSMIT * 125);
 }
 
+/* handle timeouts */
+static int mISDN_timeout(struct lcr_timer *timer, void *instance, int i)
+{
+       class PmISDN *isdnport = (class PmISDN *)instance;
+       struct lcr_msg *message;
+
+       PDEBUG(DEBUG_ISDN, "(%s) timeout after %d seconds detected (state=%d).\n", isdnport->p_name, isdnport->p_m_timeout.timeout.tv_sec, isdnport->p_state);
+       /* send timeout to endpoint */
+       message = message_create(isdnport->p_serial, ACTIVE_EPOINT(isdnport->p_epointlist), PORT_TO_EPOINT, MESSAGE_TIMEOUT);
+       message->param.state = isdnport->p_state;
+       message_put(message);
+
+       return 0;
+}
+       
 
 /*
  * whenever we get audio data from bchannel, we process it here
  */
-#ifdef SOCKET_MISDN
 void PmISDN::bchannel_receive(struct mISDNhead *hh, unsigned char *data, int len)
 {
-       unsigned long cont = *((unsigned long *)data);
-#else
-void PmISDN::bchannel_receive(iframe_t *frm)
-{
-       int len = frm->len;
-       unsigned long cont = *((unsigned long *)&frm->data.p);
-       unsigned char *data =(unsigned char *)&frm->data.p;
-#endif
-       unsigned char *data_temp;
-       unsigned long length_temp;
+       unsigned int cont = *((unsigned int *)data);
        struct lcr_msg *message;
        unsigned char *p;
        int l;
 
-#ifdef SOCKET_MISDN
-       if (hh->prim == PH_CONTROL_IND)
-#else
-       if (frm->prim == (PH_CONTROL | INDICATION))
-#endif
-       {
-               if (len < 4)
-               {
+       if (hh->prim == PH_CONTROL_IND) {
+               if (len < 4) {
                        PERROR("SHORT READ OF PH_CONTROL INDICATION\n");
                        return;
                }
-               if ((cont&(~DTMF_TONE_MASK)) == DTMF_TONE_VAL)
-               {
+               if ((cont&(~DTMF_TONE_MASK)) == DTMF_TONE_VAL) {
                        chan_trace_header(p_m_mISDNport, this, "BCHANNEL control", DIRECTION_IN);
                        add_trace("DTMF", NULL, "%c", cont & DTMF_TONE_MASK);
+                       if (!p_m_dtmf)
+                               add_trace("info", NULL, "DTMF is disabled");
                        end_trace();
-                       message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_DTMF);
-                       message->param.dtmf = cont & DTMF_TONE_MASK;
-                       PDEBUG(DEBUG_PORT, "PmISDN(%s) PH_CONTROL INDICATION  DTMF digit '%c'\n", p_name, message->param.dtmf);
-                       message_put(message);
+                       if (!p_m_dtmf)
+                               return;
+                       if (p_type == PORT_TYPE_POTS_FXS_IN && p_state == PORT_STATE_IN_OVERLAP) {
+                               class Pfxs *pfxs = (class Pfxs *)this;
+                               if (!pfxs->p_m_fxs_allow_dtmf) {
+                                       PDEBUG(DEBUG_PORT, "PmISDN(%s) DTMF for FXS currently disabled\n", p_name);
+                                       return;
+                               }
+                               SCCAT(p_dialinginfo.id, cont & DTMF_TONE_MASK);
+                               message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_INFORMATION);
+                               message->param.information.id[0] = cont & DTMF_TONE_MASK;
+                               PDEBUG(DEBUG_PORT, "PmISDN(%s) PH_CONTROL INDICATION  INFORMATION digit '%s'\n", p_name, message->param.information.id);
+                               message_put(message);
+                       } else {
+                               message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_DTMF);
+                               message->param.dtmf = cont & DTMF_TONE_MASK;
+                               PDEBUG(DEBUG_PORT, "PmISDN(%s) PH_CONTROL INDICATION  DTMF digit '%c'\n", p_name, message->param.dtmf);
+                               message_put(message);
+                       }
                        return;
                }
-               switch(cont)
-               {
-#ifdef SOCKET_MISDN
+               switch(cont) {
                        case DSP_BF_REJECT:
-#else
-                       case BF_REJECT:
-#endif
                        chan_trace_header(p_m_mISDNport, this, "BCHANNEL control", DIRECTION_IN);
                        add_trace("DSP-CRYPT", NULL, "error");
                        end_trace();
@@ -1713,11 +1087,7 @@ void PmISDN::bchannel_receive(iframe_t *frm)
                        message_put(message);
                        break;
 
-#ifdef SOCKET_MISDN
                        case DSP_BF_ACCEPT:
-#else
-                       case BF_ACCEPT:
-#endif
                        chan_trace_header(p_m_mISDNport, this, "BCHANNEL control", DIRECTION_IN);
                        add_trace("DSP-CRYPT", NULL, "ok");
                        end_trace();
@@ -1734,74 +1104,63 @@ void PmISDN::bchannel_receive(iframe_t *frm)
                }
                return;
        }
-#ifdef SOCKET_MISDN
-       if (hh->prim == PH_CONTROL_IND)
-       {
-               switch(hh->id)
-#else
-       if (frm->prim == (PH_SIGNAL | INDICATION)
-        || frm->prim == (PH_CONTROL | INDICATION))
-       {
-               switch(frm->dinfo)
-#endif
-               {
-#ifndef OLD_MISDN
-#ifdef SOCKET_MISDN
-                       case DSP_TX_DATA:
-#else
-                       case CMX_TX_DATA:
-#endif
-                       if (!p_m_txdata)
-                       {
-                               /* if tx is off, it may happen that fifos send us pending informations, we just ignore them */
-                               PDEBUG(DEBUG_BCHANNEL, "PmISDN(%s) ignoring tx data, because 'txdata' is turned off\n", p_name);
-                               return;
-                       }
-                       /* see below (same condition) */
-                       if (p_state!=PORT_STATE_CONNECT
-                                && !p_m_mISDNport->tones)
-                               break;
-//                     printf(".");fflush(stdout);return;
-                       if (p_record)
-                               record(data, len, 1); // from up
-                       break;
-#endif
-
+       if (hh->prim == PH_CONTROL_IND) {
+               switch(hh->id) {
                        default:
                        chan_trace_header(p_m_mISDNport, this, "BCHANNEL control", DIRECTION_IN);
-#ifdef SOCKET_MISDN
                        add_trace("unknown", NULL, "0x%x", hh->id);
-#else
-                       add_trace("unknown", NULL, "0x%x", frm->dinfo);
-#endif
                        end_trace();
                }
                return;
        }
-#ifdef SOCKET_MISDN
-       if (hh->prim != PH_DATA_IND && hh->prim != DL_DATA_IND)
-       {
+       if (hh->prim == PH_DATA_REQ || hh->prim == DL_DATA_REQ) {
+               if (!p_m_txdata) {
+                       /* if tx is off, it may happen that fifos send us pending informations, we just ignore them */
+                       PDEBUG(DEBUG_BCHANNEL, "PmISDN(%s) ignoring tx data, because 'txdata' is turned off\n", p_name);
+                       return;
+               }
+               /* see below (same condition) */
+               if (p_state!=PORT_STATE_CONNECT
+                        && !p_m_mISDNport->tones)
+                       return;
+//             printf(".");fflush(stdout);return;
+               if (p_record)
+                       record(data, len, 1); // from up
+               if (p_tap)
+                       tap(data, len, 1); // from up
+               return;
+       }
+       if (hh->prim != PH_DATA_IND && hh->prim != DL_DATA_IND) {
                PERROR("Bchannel received unknown primitve: 0x%x\n", hh->prim);
-#else
-       if (frm->prim != (PH_DATA | INDICATION) && frm->prim != (DL_DATA | INDICATION))
-       {
-               PERROR("Bchannel received unknown primitve: 0x%x\n", frm->prim);
-#endif
                return;
        }
+
+       /* inband is processed */
+       if (p_m_inband_receive_on)
+               inband_receive(data, len);
+
+       /* send to remote, if bridged */
+       bridge_tx(data, len);
+
        /* calls will not process any audio data unless
-        * the call is connected OR interface features audio during call setup.
+        * the call is connected OR tones feature is enabled.
         */
-//printf("%d -> %d prim=%x joindata=%d tones=%d\n", p_serial, ACTIVE_EPOINT(p_epointlist), frm->prim, p_m_joindata, p_m_mISDNport->earlyb);    
 #ifndef DEBUG_COREBRIDGE
        if (p_state!=PORT_STATE_CONNECT
         && !p_m_mISDNport->tones)
                return;
 #endif
 
+#if 0
+       /* the bearer capability must be audio in order to send and receive
+        * audio prior or after connect.
+        */
+       if (!(p_bearerinfo.capability&CLASS_CAPABILITY_AUDIO) && p_state!=PORT_STATE_CONNECT)
+               return;
+#endif
+
        /* if rx is off, it may happen that fifos send us pending informations, we just ignore them */
-       if (p_m_rxoff)
-       {
+       if (p_m_rxoff) {
                PDEBUG(DEBUG_BCHANNEL, "PmISDN(%s) ignoring data, because rx is turned off\n", p_name);
                return;
        }
@@ -1809,10 +1168,11 @@ void PmISDN::bchannel_receive(iframe_t *frm)
        /* record data */
        if (p_record)
                record(data, len, 0); // from down
+       if (p_tap)
+               tap(data, len, 0); // from down
 
        /* randomize and listen to crypt message if enabled */
-       if (p_m_crypt_listen)
-       {
+       if (p_m_crypt_listen) {
                /* the noisy randomizer */
                p = data;
                l = len;
@@ -1821,26 +1181,6 @@ void PmISDN::bchannel_receive(iframe_t *frm)
 
                cryptman_listen_bch(data, len);
        }
-
-       p = data;
-
-       /* send data to epoint */
-       if (p_m_joindata && ACTIVE_EPOINT(p_epointlist)) /* only if we have an epoint object */
-       {
-               length_temp = len;
-               data_temp = p;
-               while(length_temp)
-               {
-                       message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_DATA);
-                       message->param.data.len = (length_temp>sizeof(message->param.data.data))?sizeof(message->param.data.data):length_temp;
-                       memcpy(message->param.data.data, data_temp, message->param.data.len);
-                       message_put(message);
-                       if (length_temp <= sizeof(message->param.data.data))
-                               break;
-                       data_temp += sizeof(message->param.data.data);
-                       length_temp -= sizeof(message->param.data.data);
-               }
-       }
 }
 
 
@@ -1849,99 +1189,96 @@ void PmISDN::bchannel_receive(iframe_t *frm)
  */
 void PmISDN::set_echotest(int echo)
 {
-       if (p_m_echo != echo)
-       {
+       if (p_m_echo != echo) {
                p_m_echo = echo;
                PDEBUG(DEBUG_ISDN, "we set echo to echo=%d.\n", p_m_echo);
                if (p_m_b_channel)
                        if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
-#ifdef SOCKET_MISDN
-                               ph_control(p_m_mISDNport, this, p_m_mISDNport->b_socket[p_m_b_index], p_m_echo?DSP_ECHO_ON:DSP_ECHO_OFF, 0, "DSP-ECHO", p_m_echo);
-#else
-                               ph_control(p_m_mISDNport, this, p_m_mISDNport->b_addr[p_m_b_index], p_m_echo?CMX_ECHO_ON:CMX_ECHO_OFF, 0, "DSP-ECHO", p_m_echo);
-#endif
+                               ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, p_m_echo?DSP_ECHO_ON:DSP_ECHO_OFF, 0, "DSP-ECHO", p_m_echo);
        }
 }
 
 /*
  * set tone
  */
-void PmISDN::set_tone(char *dir, char *tone)
+void PmISDN::set_tone(const char *dir, const char *tone)
 {
-       int id;
+       int id = TONE_OFF;
+       int dsp = DSP_NONE;
+
+       /* if no directory is given (by extension), we use interface.conf or options.conf */
+       if (!dir || !dir[0]) {
+               if (p_m_mISDNport->ifport->tones_dir[0])
+                       dir = p_m_mISDNport->ifport->tones_dir;
+               else if (options.tones_dir[0])
+                       dir = options.tones_dir;
+       }
 
        if (!tone)
                tone = "";
        PDEBUG(DEBUG_ISDN, "isdn port now plays tone:'%s'.\n", tone);
-       if (!tone[0])
-       {
+       if (!tone[0]) {
                id = TONE_OFF;
                goto setdsp;
        }
 
+       /* check for dsp tones */
+       if (!strcmp(dir, "american"))
+               dsp = DSP_AMERICAN;
+       if (!strcmp(dir, "german"))
+               dsp = DSP_GERMAN;
+       if (!strcmp(dir, "oldgerman"))
+               dsp = DSP_OLDGERMAN;
+
        /* check if we NOT really have to use a dsp-tone */
-       if (!options.dsptones)
-       {
+       if (dsp == DSP_NONE) {
                nodsp:
                if (p_m_tone)
                if (p_m_b_index > -1)
-               if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
-               {
+               if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE && p_m_mISDNport->b_mode[p_m_b_index] == B_MODE_TRANSPARENT) {
                        PDEBUG(DEBUG_ISDN, "we reset tone from id=%d to OFF.\n", p_m_tone);
-#ifdef SOCKET_MISDN
-                       ph_control(p_m_mISDNport, this, p_m_mISDNport->b_socket[p_m_b_index], DSP_TONE_PATT_OFF, 0, "DSP-TONE", 0);
-#else
-                       ph_control(p_m_mISDNport, this, p_m_mISDNport->b_addr[p_m_b_index], TONE_PATT_OFF, 0, "DSP-TONE", 0);
-#endif
+                       ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, DSP_TONE_PATT_OFF, 0, "DSP-TONE", 0);
                }
                p_m_tone = 0;
                Port::set_tone(dir, tone);
                return;
        }
-       if (p_tone_dir[0])
-               goto nodsp;
 
        /* now we USE dsp-tone, convert name */
-       else if (!strcmp(tone, "dialtone"))
-       {
-               switch(options.dsptones) {
+       if (!strcmp(tone, "dialtone")) {
+               switch(dsp) {
                case DSP_AMERICAN: id = TONE_AMERICAN_DIALTONE; break;
                case DSP_GERMAN: id = TONE_GERMAN_DIALTONE; break;
                case DSP_OLDGERMAN: id = TONE_GERMAN_OLDDIALTONE; break;
                }
-       } else if (!strcmp(tone, "dialpbx"))
-       {
-               switch(options.dsptones) {
+       } else if (!strcmp(tone, "dialpbx")) {
+               switch(dsp) {
                case DSP_AMERICAN: id = TONE_AMERICAN_DIALPBX; break;
                case DSP_GERMAN: id = TONE_GERMAN_DIALPBX; break;
                case DSP_OLDGERMAN: id = TONE_GERMAN_OLDDIALPBX; break;
                }
-       } else if (!strcmp(tone, "ringing"))
-       {
-               switch(options.dsptones) {
+       } else if (!strcmp(tone, "ringing")) {
+               switch(dsp) {
                case DSP_AMERICAN: id = TONE_AMERICAN_RINGING; break;
                case DSP_GERMAN: id = TONE_GERMAN_RINGING; break;
                case DSP_OLDGERMAN: id = TONE_GERMAN_OLDRINGING; break;
                }
-       } else if (!strcmp(tone, "ringpbx"))
-       {
-               switch(options.dsptones) {
+       } else if (!strcmp(tone, "ringpbx")) {
+               switch(dsp) {
                case DSP_AMERICAN: id = TONE_AMERICAN_RINGPBX; break;
                case DSP_GERMAN: id = TONE_GERMAN_RINGPBX; break;
                case DSP_OLDGERMAN: id = TONE_GERMAN_OLDRINGPBX; break;
                }
-       } else if (!strcmp(tone, "busy"))
-       {
+       } else if (!strcmp(tone, "busy")) {
                busy:
-               switch(options.dsptones) {
+               switch(dsp) {
                case DSP_AMERICAN: id = TONE_AMERICAN_BUSY; break;
                case DSP_GERMAN: id = TONE_GERMAN_BUSY; break;
                case DSP_OLDGERMAN: id = TONE_GERMAN_OLDBUSY; break;
                }
-       } else if (!strcmp(tone, "release"))
-       {
+       } else if (!strcmp(tone, "release")) {
                hangup:
-               switch(options.dsptones) {
+               switch(dsp) {
                case DSP_AMERICAN: id = TONE_AMERICAN_HANGUP; break;
                case DSP_GERMAN: id = TONE_GERMAN_HANGUP; break;
                case DSP_OLDGERMAN: id = TONE_GERMAN_OLDHANGUP; break;
@@ -1950,9 +1287,8 @@ void PmISDN::set_tone(char *dir, char *tone)
                goto hangup;
        else if (!strcmp(tone, "cause_11"))
                goto busy;
-       else if (!strcmp(tone, "cause_22"))
-       {
-               switch(options.dsptones) {
+       else if (!strcmp(tone, "cause_22")) {
+               switch(dsp) {
                case DSP_AMERICAN: id = TONE_SPECIAL_INFO; break;
                case DSP_GERMAN: id = TONE_GERMAN_GASSENBESETZT; break;
                case DSP_OLDGERMAN: id = TONE_GERMAN_OLDBUSY; break;
@@ -1967,18 +1303,13 @@ void PmISDN::set_tone(char *dir, char *tone)
                goto nodsp;
 
        setdsp:
-       if (p_m_tone != id)
-       {
+       if (p_m_tone != id) {
                /* set new tone */
                p_m_tone = id;
                PDEBUG(DEBUG_ISDN, "we set tone to id=%d.\n", p_m_tone);
                if (p_m_b_index > -1)
-               if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
-#ifdef SOCKET_MISDN
-                       ph_control(p_m_mISDNport, this, p_m_mISDNport->b_socket[p_m_b_index], p_m_tone?DSP_TONE_PATT_ON:DSP_TONE_PATT_OFF, p_m_tone, "DSP-TONE", p_m_tone);
-#else
-                       ph_control(p_m_mISDNport, this, p_m_mISDNport->b_addr[p_m_b_index], p_m_tone?TONE_PATT_ON:TONE_PATT_OFF, p_m_tone, "DSP-TONE", p_m_tone);
-#endif
+               if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE && p_m_mISDNport->b_mode[p_m_b_index] == B_MODE_TRANSPARENT)
+                       ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, p_m_tone?DSP_TONE_PATT_ON:DSP_TONE_PATT_OFF, p_m_tone, "DSP-TONE", p_m_tone);
        }
        /* turn user-space tones off in cases of no tone OR dsp tone */
        Port::set_tone("",NULL);
@@ -1987,83 +1318,43 @@ void PmISDN::set_tone(char *dir, char *tone)
 
 /* MESSAGE_mISDNSIGNAL */
 //extern struct lcr_msg *dddebug;
-void PmISDN::message_mISDNsignal(unsigned long epoint_id, int message_id, union parameter *param)
+void PmISDN::message_mISDNsignal(unsigned int epoint_id, int message_id, union parameter *param)
 {
-       switch(param->mISDNsignal.message)
-       {
+       int oldconf, newconf;
+       switch(param->mISDNsignal.message) {
                case mISDNSIGNAL_VOLUME:
-               if (p_m_tx_gain != param->mISDNsignal.tx_gain)
-               {
+               if (p_m_tx_gain != param->mISDNsignal.tx_gain) {
                        p_m_tx_gain = param->mISDNsignal.tx_gain;
                        PDEBUG(DEBUG_BCHANNEL, "we change tx-volume to shift=%d.\n", p_m_tx_gain);
                        if (p_m_b_index > -1)
-                       if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
-#ifdef SOCKET_MISDN
-                               ph_control(p_m_mISDNport, this, p_m_mISDNport->b_socket[p_m_b_index], DSP_VOL_CHANGE_TX, p_m_tx_gain, "DSP-TX_GAIN", p_m_tx_gain);
-#else
-                               ph_control(p_m_mISDNport, this, p_m_mISDNport->b_addr[p_m_b_index], VOL_CHANGE_TX, p_m_tx_gain, "DSP-TX_GAIN", p_m_tx_gain);
-#endif
+                       if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE && p_m_mISDNport->b_mode[p_m_b_index] == B_MODE_TRANSPARENT)
+                               ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, DSP_VOL_CHANGE_TX, p_m_tx_gain, "DSP-TX_GAIN", p_m_tx_gain);
                } else
                        PDEBUG(DEBUG_BCHANNEL, "we already have tx-volume shift=%d.\n", p_m_rx_gain);
-               if (p_m_rx_gain != param->mISDNsignal.rx_gain)
-               {
+               if (p_m_rx_gain != param->mISDNsignal.rx_gain) {
                        p_m_rx_gain = param->mISDNsignal.rx_gain;
                        PDEBUG(DEBUG_BCHANNEL, "we change rx-volume to shift=%d.\n", p_m_rx_gain);
                        if (p_m_b_index > -1)
-                       if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
-#ifdef SOCKET_MISDN
-                               ph_control(p_m_mISDNport, this, p_m_mISDNport->b_socket[p_m_b_index], DSP_VOL_CHANGE_RX, p_m_rx_gain, "DSP-RX_GAIN", p_m_rx_gain);
-#else
-                               ph_control(p_m_mISDNport, this, p_m_mISDNport->b_addr[p_m_b_index], VOL_CHANGE_RX, p_m_rx_gain, "DSP-RX_GAIN", p_m_rx_gain);
-#endif
+                       if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE && p_m_mISDNport->b_mode[p_m_b_index] == B_MODE_TRANSPARENT)
+                               ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, DSP_VOL_CHANGE_RX, p_m_rx_gain, "DSP-RX_GAIN", p_m_rx_gain);
                } else
                        PDEBUG(DEBUG_BCHANNEL, "we already have rx-volume shift=%d.\n", p_m_rx_gain);
                break;
 
                case mISDNSIGNAL_CONF:
-//if (dddebug) PDEBUG(DEBUG_ISDN, "dddebug = %d\n", dddebug->type);
-//tone         if (!p_m_tone && p_m_conf!=param->mISDNsignal.conf)
-               if (p_m_conf != param->mISDNsignal.conf)
-               {
-                       p_m_conf = param->mISDNsignal.conf;
-                       PDEBUG(DEBUG_BCHANNEL, "we change conference to conf=%d.\n", p_m_conf);
-                       if (p_m_b_index > -1)
-                       if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
-#ifdef SOCKET_MISDN
-                               ph_control(p_m_mISDNport, this, p_m_mISDNport->b_socket[p_m_b_index], (p_m_conf)?DSP_CONF_JOIN:DSP_CONF_SPLIT, p_m_conf, "DSP-CONF", p_m_conf);
-#else
-                               ph_control(p_m_mISDNport, this, p_m_mISDNport->b_addr[p_m_b_index], (p_m_conf)?CMX_CONF_JOIN:CMX_CONF_SPLIT, p_m_conf, "DSP-CONF", p_m_conf);
-#endif
-               } else
-                       PDEBUG(DEBUG_BCHANNEL, "we already have conf=%d.\n", p_m_conf);
-               /* we must set, even if currently tone forbids conf */
+               oldconf = p_m_mute?0:p_m_conf;
                p_m_conf = param->mISDNsignal.conf;
-//if (dddebug) PDEBUG(DEBUG_ISDN, "dddebug = %d\n", dddebug->type);
+               newconf = p_m_mute?0:p_m_conf;
+               set_conf(oldconf, newconf);
                break;
 
-               case mISDNSIGNAL_JOINDATA:
-               if (p_m_joindata != param->mISDNsignal.joindata)
-               {
-                       p_m_joindata = param->mISDNsignal.joindata;
-                       PDEBUG(DEBUG_BCHANNEL, "we change to joindata=%d.\n", p_m_joindata);
-               } else
-                       PDEBUG(DEBUG_BCHANNEL, "we already have joindata=%d.\n", p_m_joindata);
-               break;
-               
                case mISDNSIGNAL_DELAY:
-               if (p_m_delay != param->mISDNsignal.delay)
-               {
+               if (p_m_delay != param->mISDNsignal.delay) {
                        p_m_delay = param->mISDNsignal.delay;
                        PDEBUG(DEBUG_BCHANNEL, "we change delay mode to delay=%d.\n", p_m_delay);
-#ifndef OLD_MISDN
                        if (p_m_b_index > -1)
-                       if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
-#ifdef SOCKET_MISDN
-                               ph_control(p_m_mISDNport, this, p_m_mISDNport->b_socket[p_m_b_index], p_m_delay?DSP_DELAY:DSP_JITTER, p_m_delay, "DSP-DELAY", p_m_delay);
-#else
-                               ph_control(p_m_mISDNport, this, p_m_mISDNport->b_addr[p_m_b_index], p_m_delay?CMX_DELAY:CMX_JITTER, p_m_delay, "DSP-DELAY", p_m_delay);
-#endif
-#endif
+                       if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE && p_m_mISDNport->b_mode[p_m_b_index] == B_MODE_TRANSPARENT)
+                               ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, p_m_delay?DSP_DELAY:DSP_JITTER, p_m_delay, "DSP-DELAY", p_m_delay);
                } else
                        PDEBUG(DEBUG_BCHANNEL, "we already have delay=%d.\n", p_m_delay);
                break;
@@ -2074,17 +1365,15 @@ void PmISDN::message_mISDNsignal(unsigned long epoint_id, int message_id, union
 }
 
 /* MESSAGE_CRYPT */
-void PmISDN::message_crypt(unsigned long epoint_id, int message_id, union parameter *param)
+void PmISDN::message_crypt(unsigned int epoint_id, int message_id, union parameter *param)
 {
        struct lcr_msg *message;
 
-       switch(param->crypt.type)
-       {
+       switch(param->crypt.type) {
                case CC_ACTBF_REQ:           /* activate blowfish */
                p_m_crypt = 1;
                p_m_crypt_key_len = param->crypt.len;
-               if (p_m_crypt_key_len > (int)sizeof(p_m_crypt_key))
-               {
+               if (p_m_crypt_key_len > (int)sizeof(p_m_crypt_key)) {
                        PERROR("PmISDN(%s) key too long %d > %d\n", p_name, p_m_crypt_key_len, sizeof(p_m_crypt_key));
                        message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_CRYPT);
                        message->param.crypt.type = CC_ERROR_IND;
@@ -2095,12 +1384,8 @@ void PmISDN::message_crypt(unsigned long epoint_id, int message_id, union parame
                crypt_off:
                PDEBUG(DEBUG_BCHANNEL, "we set encryption to crypt=%d. (0 means OFF)\n", p_m_crypt);
                if (p_m_b_index > -1)
-               if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
-#ifdef SOCKET_MISDN
-                       ph_control_block(p_m_mISDNport, this, p_m_mISDNport->b_socket[p_m_b_index], p_m_crypt?DSP_BF_ENABLE_KEY:DSP_BF_DISABLE, p_m_crypt_key, p_m_crypt_key_len, "DSP-CRYPT", p_m_crypt_key_len);
-#else
-                       ph_control_block(p_m_mISDNport, this, p_m_mISDNport->b_addr[p_m_b_index], p_m_crypt?BF_ENABLE_KEY:BF_DISABLE, p_m_crypt_key, p_m_crypt_key_len, "DSP-CRYPT", p_m_crypt_key_len);
-#endif
+               if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE && p_m_mISDNport->b_mode[p_m_b_index] == B_MODE_TRANSPARENT)
+                       ph_control_block(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, p_m_crypt?DSP_BF_ENABLE_KEY:DSP_BF_DISABLE, p_m_crypt_key, p_m_crypt_key_len, "DSP-CRYPT", p_m_crypt_key_len);
                break;
 
                case CC_DACT_REQ:            /* deactivate session encryption */
@@ -2110,32 +1395,29 @@ void PmISDN::message_crypt(unsigned long epoint_id, int message_id, union parame
 
                case CR_LISTEN_REQ:          /* start listening to messages */
                p_m_crypt_listen = 1;
+               update_rxoff();
                p_m_crypt_listen_state = 0;
                break;
 
                case CR_UNLISTEN_REQ:        /* stop listening to messages */
                p_m_crypt_listen = 0;
+               update_rxoff();
                break;
 
                case CR_MESSAGE_REQ:         /* send message */
                p_m_crypt_msg_len = cryptman_encode_bch(param->crypt.data, param->crypt.len, p_m_crypt_msg, sizeof(p_m_crypt_msg));
-               if (!p_m_crypt_msg_len)
-               {
+               if (!p_m_crypt_msg_len) {
                        PERROR("PmISDN(%s) message too long %d > %d\n", p_name, param->crypt.len-1, sizeof(p_m_crypt_msg));
                        break;
                }
                p_m_crypt_msg_current = 0; /* reset */
                p_m_crypt_msg_loops = 6; /* enable */
+               update_rxoff();
 #if 0
                /* disable txmix, or we get corrupt data due to audio process */
-               if (p_m_txmix && p_m_b_index>=0)
-               {
+               if (p_m_txmix && p_m_b_index>=0 && p_m_mISDNport->b_mode[p_m_b_index] == B_MODE_TRANSPARENT) {
                        PDEBUG(DEBUG_BCHANNEL, "for sending CR_MESSAGE_REQ, we reset txmix from txmix=%d.\n", p_m_txmix);
-#ifdef SOCKET_MISDN
-                       ph_control(p_m_mISDNport, this, p_mISDNport->b_socket[p_m_b_index], DSP_MIX_OFF, 0, "DSP-TXMIX", 0);
-#else
-                       ph_control(p_m_mISDNport, this, p_mISDNport->b_addr[p_m_b_index], CMX_MIX_OFF, 0, "DSP-TXMIX", 0);
-#endif
+                       ph_control(p_m_mISDNport, this, p_mISDNport->b_sock[p_m_b_index].fd, DSP_MIX_OFF, 0, "DSP-TXMIX", 0);
                }
 #endif
                break;
@@ -2149,193 +1431,137 @@ void PmISDN::message_crypt(unsigned long epoint_id, int message_id, union parame
 /*
  * endpoint sends messages to the port
  */
-int PmISDN::message_epoint(unsigned long epoint_id, int message_id, union parameter *param)
+int PmISDN::message_epoint(unsigned int epoint_id, int message_id, union parameter *param)
 {
-       if (Port::message_epoint(epoint_id, message_id, param))
-               return(1);
-
-       switch(message_id)
-       {
-               case MESSAGE_DATA: /* tx-data from upper layer */
-               txfromup(param->data.data, param->data.len);
-               return(1);
+       if (Port::message_epoint(epoint_id, message_id, param)) {
+               if (message_id == MESSAGE_BRIDGE)
+                       update_rxoff();
+               return 1;
+       }
 
+       switch(message_id) {
                case MESSAGE_mISDNSIGNAL: /* user command */
                PDEBUG(DEBUG_ISDN, "PmISDN(%s) received special ISDN SIGNAL %d.\n", p_name, param->mISDNsignal.message);
                message_mISDNsignal(epoint_id, message_id, param);
-               return(1);
+               return 1;
 
                case MESSAGE_CRYPT: /* crypt control command */
                PDEBUG(DEBUG_ISDN, "PmISDN(%s) received encryption command '%d'.\n", p_name, param->crypt.type);
                message_crypt(epoint_id, message_id, param);
-               return(1);
+               return 1;
+
+               case MESSAGE_DISABLE_DEJITTER:
+               PDEBUG(DEBUG_ISDN, "PmISDN(%s) received de-jitter disable order.\n", p_name);
+               p_m_disable_dejitter = 1;
+               p_m_preload = param->queue;
+               update_rxoff();
+               return 1;
        }
 
-       return(0);
+       return 0;
 }
 
+void PmISDN::update_rxoff(void)
+{
+       int tx_dejitter = 0;
+
+       /* call bridges in user space OR crypto OR recording */
+       if (p_bridge || p_m_crypt_msg_loops || p_m_crypt_listen || p_record || p_tap || p_m_inband_receive_on) {
+               /* rx IS required */
+               if (p_m_rxoff) {
+                       /* turn on RX */
+                       p_m_rxoff = 0;
+                       PDEBUG(DEBUG_BCHANNEL, "%s: receive data is required, so we turn them on\n", __FUNCTION__);
+                       if (p_m_b_index > -1)
+                               if (p_m_mISDNport->b_port[p_m_b_index] && p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
+                                       ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, DSP_RECEIVE_ON, 0, "DSP-RXOFF", 0);
+               }
+       } else {
+               /* rx NOT required */
+               if (!p_m_rxoff) {
+                       /* turn off RX */
+                       p_m_rxoff = 1;
+                       PDEBUG(DEBUG_BCHANNEL, "%s: receive data is not required, so we turn them off\n", __FUNCTION__);
+                       if (p_m_b_index > -1)
+                               if (p_m_mISDNport->b_port[p_m_b_index] && p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
+                                       ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, DSP_RECEIVE_OFF, 0, "DSP-RXOFF", 1);
+               }
+       }
+       /* recording / tapping */
+       if (p_record || p_tap) {
+               /* txdata IS required */
+               if (!p_m_txdata) {
+                       /* turn on RX */
+                       p_m_txdata = 1;
+                       PDEBUG(DEBUG_BCHANNEL, "%s: transmit data is required, so we turn them on\n", __FUNCTION__);
+                       if (p_m_b_index > -1)
+                               if (p_m_mISDNport->b_port[p_m_b_index] && p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
+                                       ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, DSP_TXDATA_ON, 0, "DSP-TXDATA", 1);
+               }
+       } else {
+               /* txdata NOT required */
+               if (p_m_txdata) {
+                       /* turn off RX */
+                       p_m_txdata = 0;
+                       PDEBUG(DEBUG_BCHANNEL, "%s: transmit data is not required, so we turn them off\n", __FUNCTION__);
+                       if (p_m_b_index > -1)
+                               if (p_m_mISDNport->b_port[p_m_b_index] && p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
+                                       ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, DSP_TXDATA_OFF, 0, "DSP-TXDATA", 0);
+               }
+       }
+       /* dejitter on bridge */
+       if (p_bridge && !p_m_disable_dejitter)
+               tx_dejitter = 1;
+       if (p_m_tx_dejitter != tx_dejitter) {
+               p_m_tx_dejitter = tx_dejitter;
+               PDEBUG(DEBUG_BCHANNEL, "we change dejitter mode to %s.\n", (p_m_tx_dejitter) ? "on" : "off");
+               if (p_m_b_index > -1)
+                       if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE && p_m_mISDNport->b_mode[p_m_b_index] == B_MODE_TRANSPARENT)
+                               ph_control(p_m_mISDNport, this, p_m_mISDNport->b_sock[p_m_b_index].fd, DSP_TX_DEJITTER, p_m_tx_dejitter, "DSP-TX_DEJITTER", p_m_tx_dejitter);
+       }
+}
 
-/*
- * main loop for processing messages from mISDN
- */
-#ifdef SOCKET_MISDN
-int mISDN_handler(void)
+static int mISDN_upqueue(struct lcr_fd *fd, unsigned int what, void *instance, int i)
 {
-       int ret, work = 0;
        struct mISDNport *mISDNport;
-       class PmISDN *isdnport;
-       int i;
-       unsigned char buffer[2048+MISDN_HEADER_LEN];
-       struct mISDNhead *hh = (struct mISDNhead *)buffer;
        struct mbuffer *mb;
        struct l3_msg *l3m;
+       char byte;
+       int ret;
+
+       /* unset global semaphore */
+       upqueue_avail = 0;
+       // with a very small incident, upqueue_avail may be set by mISDN thread and
+       // another byte may be sent to the pipe, which causes a call to this function
+       // again with nothing in the upqueue. this is no problem.
+       ret = read(fd->fd, &byte, 1);
 
        /* process all ports */
        mISDNport = mISDNport_first;
-       while(mISDNport)
-       {
-               /* process all bchannels */
-               i = 0;
-               while(i < mISDNport->b_num)
-               {
-                       /* process timer events for bchannel handling */
-                       if (mISDNport->b_timer[i])
-                       {
-                               if (mISDNport->b_timer[i] <= now_d)
-                                       bchannel_event(mISDNport, i, B_EVENT_TIMEOUT);
-                       }
-                       /* handle port of bchannel */
-                       isdnport=mISDNport->b_port[i];
-                       if (isdnport)
-                       {
-                               /* call bridges in user space OR crypto OR recording */
-                               if (isdnport->p_m_joindata || isdnport->p_m_crypt_msg_loops || isdnport->p_m_crypt_listen || isdnport->p_record)
-                               {
-                                       /* rx IS required */
-                                       if (isdnport->p_m_rxoff)
-                                       {
-                                               /* turn on RX */
-                                               isdnport->p_m_rxoff = 0;
-                                               PDEBUG(DEBUG_BCHANNEL, "%s: receive data is required, so we turn them on\n", __FUNCTION__);
-                                               if (mISDNport->b_port[i] && mISDNport->b_state[i] == B_STATE_ACTIVE)
-                                                       ph_control(mISDNport, isdnport, mISDNport->b_socket[isdnport->p_m_b_index], DSP_RECEIVE_ON, 0, "DSP-RXOFF", 0);
-                                               return(1);
-                                       }
-                               } else
-                               {
-                                       /* rx NOT required */
-                                       if (!isdnport->p_m_rxoff)
-                                       {
-                                               /* turn off RX */
-                                               isdnport->p_m_rxoff = 1;
-                                               PDEBUG(DEBUG_BCHANNEL, "%s: receive data is not required, so we turn them off\n", __FUNCTION__);
-                                               if (mISDNport->b_port[i] && mISDNport->b_state[i] == B_STATE_ACTIVE)
-                                                       ph_control(mISDNport, isdnport, mISDNport->b_socket[isdnport->p_m_b_index], DSP_RECEIVE_OFF, 0, "DSP-RXOFF", 1);
-                                               return(1);
-                                       }
-                               }
-                               /* recording */
-                               if (isdnport->p_record)
-                               {
-                                       /* txdata IS required */
-                                       if (!isdnport->p_m_txdata)
-                                       {
-                                               /* turn on RX */
-                                               isdnport->p_m_txdata = 1;
-                                               PDEBUG(DEBUG_BCHANNEL, "%s: transmit data is required, so we turn them on\n", __FUNCTION__);
-                                               if (mISDNport->b_port[i] && mISDNport->b_state[i] == B_STATE_ACTIVE)
-                                                       ph_control(mISDNport, isdnport, mISDNport->b_socket[isdnport->p_m_b_index], DSP_TXDATA_ON, 0, "DSP-TXDATA", 1);
-                                               return(1);
-                                       }
-                               } else
-                               {
-                                       /* txdata NOT required */
-                                       if (isdnport->p_m_txdata)
-                                       {
-                                               /* turn off RX */
-                                               isdnport->p_m_txdata = 0;
-                                               PDEBUG(DEBUG_BCHANNEL, "%s: transmit data is not required, so we turn them off\n", __FUNCTION__);
-                                               if (mISDNport->b_port[i] && mISDNport->b_state[i] == B_STATE_ACTIVE)
-                                                       ph_control(mISDNport, isdnport, mISDNport->b_socket[isdnport->p_m_b_index], DSP_TXDATA_OFF, 0, "DSP-TXDATA", 0);
-                                               return(1);
-                                       }
-                               }
-                       }
-
-                       /* handle message from bchannel */
-                       if (mISDNport->b_socket[i] > -1)
-                       {
-                               ret = recv(mISDNport->b_socket[i], buffer, sizeof(buffer), 0);
-                               if (ret >= (int)MISDN_HEADER_LEN)
-                               {
-                                       work = 1;
-                                       switch(hh->prim)
-                                       {
-                                               /* we don't care about confirms, we use rx data to sync tx */
-                                               case PH_DATA_CNF:
-                                               break;
-
-                                               /* we receive audio data, we respond to it AND we send tones */
-                                               case PH_DATA_IND:
-                                               case DL_DATA_IND:
-                                               case PH_CONTROL_IND:
-                                               if (mISDNport->b_port[i])
-                                                       mISDNport->b_port[i]->bchannel_receive(hh, buffer+MISDN_HEADER_LEN, ret-MISDN_HEADER_LEN);
-                                               else
-                                                       PDEBUG(DEBUG_BCHANNEL, "b-channel is not associated to an ISDNPort (socket %d), ignoring.\n", mISDNport->b_socket[i]);
-                                               break;
-
-                                               case PH_ACTIVATE_IND:
-                                               case DL_ESTABLISH_IND:
-                                               case PH_ACTIVATE_CNF:
-                                               case DL_ESTABLISH_CNF:
-                                               PDEBUG(DEBUG_BCHANNEL, "DL_ESTABLISH confirm: bchannel is now activated (socket %d).\n", mISDNport->b_socket[i]);
-                                               bchannel_event(mISDNport, i, B_EVENT_ACTIVATED);
-                                               break;
-
-                                               case PH_DEACTIVATE_IND:
-                                               case DL_RELEASE_IND:
-                                               case PH_DEACTIVATE_CNF:
-                                               case DL_RELEASE_CNF:
-                                               PDEBUG(DEBUG_BCHANNEL, "DL_RELEASE confirm: bchannel is now de-activated (socket %d).\n", mISDNport->b_socket[i]);
-                                               bchannel_event(mISDNport, i, B_EVENT_DEACTIVATED);
-                                               break;
-
-                                               default:
-                                               PERROR("child message not handled: prim(0x%x) socket(%d) msg->len(%d)\n", hh->prim, mISDNport->b_socket[i], ret-MISDN_HEADER_LEN);
-                                       }
-                               } else
-                               {
-                                       if (ret < 0 && errno != EWOULDBLOCK)
-                                               PERROR("Read from port %d, index %d failed with return code %d\n", mISDNport->portnum, i, ret);
-                               }
-                       }
-                       
-                       i++;
-               }
-
+       while(mISDNport) {
                /* handle queued up-messages (d-channel) */
-               while ((mb = mdequeue(&mISDNport->upqueue)))
-               {
+               while ((mb = mdequeue(&mISDNport->upqueue))) {
                        l3m = &mb->l3;
-                       switch(l3m->type)
-                       {
+                       switch(l3m->type) {
                                case MPH_ACTIVATE_IND:
-                               l1l2l3_trace_header(mISDNport, NULL, L1_ACTIVATE_IND, DIRECTION_IN);
-                               end_trace();
-                               mISDNport->l1link = 1;
+                               if (mISDNport->l1link != 1) {
+                                       l1l2l3_trace_header(mISDNport, NULL, L1_ACTIVATE_IND, DIRECTION_IN);
+                                       end_trace();
+                                       mISDNport->l1link = 1;
+                               }
                                break;
        
                                case MPH_DEACTIVATE_IND:
-                               l1l2l3_trace_header(mISDNport, NULL, L1_DEACTIVATE_IND, DIRECTION_IN);
-                               end_trace();
-                               mISDNport->l1link = 0;
+                               if (mISDNport->l1link != 0) {
+                                       l1l2l3_trace_header(mISDNport, NULL, L1_DEACTIVATE_IND, DIRECTION_IN);
+                                       end_trace();
+                                       mISDNport->l1link = 0;
+                               }
                                break;
 
                                case MPH_INFORMATION_IND:
                                PDEBUG(DEBUG_ISDN, "Received MPH_INFORMATION_IND for port %d (%s).\n", mISDNport->portnum, mISDNport->ifport->interface->name);
-                               switch (l3m->pid)
-                               {
+                               switch (l3m->pid) {
                                        case L1_SIGNAL_LOS_ON:
                                        mISDNport->los = 1;
                                        break;
@@ -2367,28 +1593,33 @@ int mISDN_handler(void)
                                l1l2l3_trace_header(mISDNport, NULL, L2_ESTABLISH_IND, DIRECTION_IN);
                                add_trace("tei", NULL, "%d", l3m->pid);
                                end_trace();
-                               if ((!mISDNport->ntmode || mISDNport->ptp) && l3m->pid < 127)
-                               {
-                                       if (mISDNport->l2establish)
-                                       {
-                                               mISDNport->l2establish = 0;
+                               mISDNport->l2link = 1;
+                               if (l3m->pid < 128)
+                                       mISDNport->l2mask[l3m->pid >> 3] |= (1 << (l3m->pid & 7));
+                               if ((!mISDNport->ntmode || mISDNport->ptp) && l3m->pid < 127) {
+                                       if (mISDNport->l2establish.active) {
+                                               unsched_timer(&mISDNport->l2establish);
                                                PDEBUG(DEBUG_ISDN, "the link became active before l2establish timer expiry.\n");
                                        }
-                                       mISDNport->l2link = 1;
                                }
                                break;
 
                                case MT_L2RELEASE:
-                               l1l2l3_trace_header(mISDNport, NULL, L2_RELEASE_IND, DIRECTION_IN);
-                               add_trace("tei", NULL, "%d", l3m->pid);
-                               end_trace();
-                               if ((!mISDNport->ntmode || mISDNport->ptp) && l3m->pid < 127)
-                               {
-                                       mISDNport->l2link = 0;
-                                       if (mISDNport->l2hold)
-                                       {
-                                               time(&mISDNport->l2establish);
-                                               PDEBUG(DEBUG_ISDN, "because we are ptp, we set a l2establish timer.\n");
+                               if (l3m->pid < 128)
+                                       mISDNport->l2mask[l3m->pid >> 3] &= ~(1 << (l3m->pid & 7));
+                               if (!mISDNport->l2establish.active) {
+                                       l1l2l3_trace_header(mISDNport, NULL, L2_RELEASE_IND, DIRECTION_IN);
+                                       add_trace("tei", NULL, "%d", l3m->pid);
+                                       end_trace();
+                                       /* down if not nt-ptmp */ 
+                                       if (!mISDNport->ntmode || mISDNport->ptp)
+                                               mISDNport->l2link = 0;
+                               }
+                               if ((!mISDNport->ntmode || mISDNport->ptp) && l3m->pid < 127) {
+                                       if (!mISDNport->l2establish.active && mISDNport->l2hold) {
+                                               PDEBUG(DEBUG_ISDN, "set timer and establish.\n");
+                                               schedule_timer(&mISDNport->l2establish, 5, 0);
+                                               mISDNport->ml3->to_layer3(mISDNport->ml3, MT_L2ESTABLISH, 0, NULL);
                                        }
                                }
                                break;
@@ -2400,503 +1631,93 @@ int mISDN_handler(void)
                        /* free message */
                        free_l3_msg(l3m);
                }
+               mISDNport = mISDNport->next;
+       }
+       return 0;
+}
 
-#if 0
-               if (mISDNport->l1timeout && now>mISDNport->l1timeout)
-               { ---}
-                       PDEBUG(DEBUG_ISDN, "the L1 establish timer expired, we release all pending messages.\n", mISDNport->portnum);
-                       mISDNport->l1timeout = 0;
-#endif
-
-               /* layer 2 establish timer */
-               if (mISDNport->l2establish)
-               {
-                       if (now-mISDNport->l2establish > 5)
-                       {
-                               mISDNport->l2establish = 0;
-                               if (mISDNport->l2hold && (mISDNport->ptp || !mISDNport->ntmode))
-                               {
-
-                                       PDEBUG(DEBUG_ISDN, "the L2 establish timer expired, we try to establish the link portnum=%d.\n", mISDNport->portnum);
-                                       mISDNport->ml3->to_layer3(mISDNport->ml3, MT_L2ESTABLISH, 0, NULL);
-                                       l1l2l3_trace_header(mISDNport, NULL, L2_ESTABLISH_REQ, DIRECTION_OUT);
-                                       add_trace("tei", NULL, "%d", 0);
-                                       end_trace();
-                                       time(&mISDNport->l2establish);
-                                       return(1);
-                               }
-                       }
-               }
-
+/* l2 establish timer fires */
+static int l2establish_timeout(struct lcr_timer *timer, void *instance, int i)
+{
+       struct mISDNport *mISDNport = (struct mISDNport *)instance;
 
-               mISDNport = mISDNport->next;
+       if (mISDNport->l2hold && (mISDNport->ptp || !mISDNport->ntmode)) {
+               PDEBUG(DEBUG_ISDN, "the L2 establish timer expired, we try to establish the link portnum=%d.\n", mISDNport->portnum);
+               mISDNport->ml3->to_layer3(mISDNport->ml3, MT_L2ESTABLISH, 0, NULL);
+               schedule_timer(&mISDNport->l2establish, 5, 0); /* 5 seconds */
        }
 
-       /* if we received at least one b-frame, we will return 1 */
-       return(work);
+       return 0;
 }
-#else
-int mISDN_handler(void)
+
+/* handle frames from bchannel */
+static int b_sock_callback(struct lcr_fd *fd, unsigned int what, void *instance, int i)
 {
+       struct mISDNport *mISDNport = (struct mISDNport *)instance;
+       unsigned char buffer[2048+MISDN_HEADER_LEN];
+       struct mISDNhead *hh = (struct mISDNhead *)buffer;
        int ret;
-       struct mISDNport *mISDNport;
-       class PmISDN *isdnport;
-       int i;
-       msg_t *msg;
-       iframe_t *frm;
-       msg_t *dmsg;
-       mISDNuser_head_t *hh;
-       net_stack_t *nst;
-
-       /* the que avoids loopbacks when replying to stack after receiving
-         * from stack. */
-       mISDNport = mISDNport_first;
-       while(mISDNport)
-       {
-               /* process turning on/off rx */
-               i = 0;
-               while(i < mISDNport->b_num)
-               {
-                       /* process timer events for bchannel handling */
-                       if (mISDNport->b_timer[i])
-                       {
-                               if (mISDNport->b_timer[i] <= now_d)
-                                       bchannel_event(mISDNport, i, B_EVENT_TIMEOUT);
-                       }
-                       isdnport=mISDNport->b_port[i];
-                       if (isdnport)
-                       {
-                               /* call bridges in user space OR crypto OR recording */
-                               if (isdnport->p_m_joindata || isdnport->p_m_crypt_msg_loops || isdnport->p_m_crypt_listen || isdnport->p_record)
-                               {
-                                       /* rx IS required */
-                                       if (isdnport->p_m_rxoff)
-                                       {
-                                               /* turn on RX */
-                                               isdnport->p_m_rxoff = 0;
-                                               PDEBUG(DEBUG_BCHANNEL, "%s: receive data is required, so we turn them on\n", __FUNCTION__);
-                                               if (mISDNport->b_port[i] && mISDNport->b_state[i] == B_STATE_ACTIVE)
-                                                       ph_control(mISDNport, isdnport, mISDNport->b_addr[isdnport->p_m_b_index], CMX_RECEIVE_ON, 0, "DSP-RXOFF", 0);
-                                               return(1);
-                                       }
-                               } else
-                               {
-                                       /* rx NOT required */
-                                       if (!isdnport->p_m_rxoff)
-                                       {
-                                               /* turn off RX */
-                                               isdnport->p_m_rxoff = 1;
-                                               PDEBUG(DEBUG_BCHANNEL, "%s: receive data is not required, so we turn them off\n", __FUNCTION__);
-                                               if (mISDNport->b_port[i] && mISDNport->b_state[i] == B_STATE_ACTIVE)
-                                                       ph_control(mISDNport, isdnport, mISDNport->b_addr[isdnport->p_m_b_index], CMX_RECEIVE_OFF, 0, "DSP-RXOFF", 1);
-                                               return(1);
-                                       }
-                               }
-                               /* recording */
-                               if (isdnport->p_record)
-                               {
-                                       /* txdata IS required */
-                                       if (!isdnport->p_m_txdata)
-                                       {
-                                               /* turn on RX */
-                                               isdnport->p_m_txdata = 1;
-                                               PDEBUG(DEBUG_BCHANNEL, "%s: transmit data is required, so we turn them on\n", __FUNCTION__);
-#ifndef OLD_MISDN
-                                               if (mISDNport->b_port[i] && mISDNport->b_state[i] == B_STATE_ACTIVE)
-                                                       ph_control(mISDNport, isdnport, mISDNport->b_addr[isdnport->p_m_b_index], CMX_TXDATA_ON, 0, "DSP-TXDATA", 1);
-#endif
-                                               return(1);
-                                       }
-                               } else
-                               {
-                                       /* txdata NOT required */
-                                       if (isdnport->p_m_txdata)
-                                       {
-                                               /* turn off RX */
-                                               isdnport->p_m_txdata = 0;
-                                               PDEBUG(DEBUG_BCHANNEL, "%s: transmit data is not required, so we turn them off\n", __FUNCTION__);
-#ifndef OLD_MISDN
-                                               if (mISDNport->b_port[i] && mISDNport->b_state[i] == B_STATE_ACTIVE)
-                                                       ph_control(mISDNport, isdnport, mISDNport->b_addr[isdnport->p_m_b_index], CMX_TXDATA_OFF, 0, "DSP-TXDATA", 0);
-#endif
-                                               return(1);
-                                       }
-                               }
-                       }
-                       i++;
-               }
-#if 0
-               if (mISDNport->l1timeout && now>mISDNport->l1timeout)
-               { ---}
-                       PDEBUG(DEBUG_ISDN, "the L1 establish timer expired, we release all pending messages.\n", mISDNport->portnum);
-                       mISDNport->l1timeout = 0;
-#endif
-
-               if (mISDNport->l2establish)
-               {
-                       if (now-mISDNport->l2establish > 5)
-                       {
-                               mISDNport->l2establish = 0;
-                               if (mISDNport->l2hold && (mISDNport->ptp || !mISDNport->ntmode))
-                               {
-                                       if (mISDNport->ntmode)
-                                       {
-                                               PDEBUG(DEBUG_ISDN, "the L2 establish timer expired, we try to establish the link NT portnum=%d.\n", mISDNport->portnum);
-                                               time(&mISDNport->l2establish);
-                                               /* establish */
-                                               dmsg = create_l2msg(DL_ESTABLISH | REQUEST, 0, 0);
-                                               if (mISDNport->nst.manager_l3(&mISDNport->nst, dmsg))
-                                                       free_msg(dmsg);
-                                       } else {
-                                               iframe_t act;
-
-                                               PDEBUG(DEBUG_ISDN, "the L2 establish timer expired, we try to establish the link TE portnum=%d.\n", mISDNport->portnum);
-                                               time(&mISDNport->l2establish);
-                                               /* establish */
-                                               act.prim = DL_ESTABLISH | REQUEST; 
-                                               act.addr = (mISDNport->upper_id & ~LAYER_ID_MASK) | 3 | FLG_MSG_DOWN;
-                                               act.dinfo = 0;
-                                               act.len = 0;
-                                               mISDN_write(mISDNdevice, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
-                                       }
-                                       l1l2l3_trace_header(mISDNport, NULL, L2_ESTABLISH_REQ, DIRECTION_OUT);
-                                       add_trace("tei", NULL, "%d", 0);
-                                       end_trace();
-                                       time(&mISDNport->l2establish);
-                                       return(1);
-                               }
-                       }
-               }
-               if ((dmsg = msg_dequeue(&mISDNport->downqueue)))
-               {
-                       if (mISDNport->ntmode)
-                       {
-                               hh = (mISDNuser_head_t *)dmsg->data;
-                               PDEBUG(DEBUG_ISDN, "sending queued NT l3-down-message: prim(0x%x) dinfo(0x%x) msg->len(%d)\n", hh->prim, hh->dinfo, dmsg->len);
-                               if (mISDNport->nst.manager_l3(&mISDNport->nst, dmsg))
-                                       free_msg(dmsg);
-                       } else
-                       {
-                               frm = (iframe_t *)dmsg->data;
-                               frm->addr = mISDNport->upper_id | FLG_MSG_DOWN;
-                               frm->len = (dmsg->len) - mISDN_HEADER_LEN;
-                               PDEBUG(DEBUG_ISDN, "sending queued TE l3-down-message: prim(0x%x) dinfo(0x%x) msg->len(%d)\n", frm->prim, frm->dinfo, dmsg->len);
-                               mISDN_write(mISDNdevice, dmsg->data, dmsg->len, TIMEOUT_1SEC);
-                               free_msg(dmsg);
-                       }
-                       return(1);
-               }
-               mISDNport = mISDNport->next;
-       } 
-
-       /* no device, no read */
-       if (mISDNdevice < 0)
-               return(0);
 
-       /* get message from kernel */
-       if (!(msg = alloc_msg(MAX_MSG_SIZE)))
-               return(1);
-       ret = mISDN_read(mISDNdevice, msg->data, MAX_MSG_SIZE, 0);
-       if (ret < 0)
-       {
-               free_msg(msg);
-               if (errno == EAGAIN)
-                       return(0);
-               FATAL("Failed to do mISDN_read()\n");
-       }
-       if (!ret)
-       {
-               free_msg(msg);
-//             printf("%s: ERROR: mISDN_read() returns nothing\n");
-               return(0);
+       ret = recv(fd->fd, buffer, sizeof(buffer), 0);
+       if (ret < 0) {
+               PERROR("read error frame, errno %d\n", errno);
+               return 0;
        }
-       msg->len = ret;
-       frm = (iframe_t *)msg->data;
-
-       /* global prim */
-       switch(frm->prim)
-       {
-               case MGR_DELLAYER | CONFIRM:
-               case MGR_INITTIMER | CONFIRM:
-               case MGR_ADDTIMER | CONFIRM:
-               case MGR_DELTIMER | CONFIRM:
-               case MGR_REMOVETIMER | CONFIRM:
-               free_msg(msg);
-               return(1);
+       if (ret < (int)MISDN_HEADER_LEN) {
+               PERROR("read short frame, got %d, expected %d\n", ret, (int)MISDN_HEADER_LEN);
+               return 0;
        }
+       switch(hh->prim) {
+               /* we don't care about confirms, we use rx data to sync tx */
+               case PH_DATA_CNF:
+               break;
 
-       /* handle timer events from mISDN for NT-stack
-        * note: they do not associate with a stack */
-       if (frm->prim == (MGR_TIMER | INDICATION))
-       {
-               itimer_t *it;
-
-               /* find mISDNport */
-               mISDNport = mISDNport_first;
-               while(mISDNport)
-               {
-                       /* nt mode only */
-                       if (mISDNport->ntmode)
-                       {
-                               it = mISDNport->nst.tlist;
-                               /* find timer */
-                               while(it)
-                               {
-                                       if (it->id == (int)frm->addr)
-                                               break;
-                                       it = it->next;
-                               }
-                               if (it)
-                                       break;
-                       }
-                       mISDNport = mISDNport->next;
-               }
-               if (mISDNport)
-               {
-                       mISDN_write_frame(mISDNdevice, msg->data, mISDNport->upper_id | FLG_MSG_DOWN,
-                               MGR_TIMER | RESPONSE, 0, 0, NULL, TIMEOUT_1SEC);
-
-                       PDEBUG(DEBUG_ISDN, "timer-indication port %d it=%p\n", mISDNport->portnum, it);
-                       test_and_clear_bit(FLG_TIMER_RUNING, (long unsigned int *)&it->Flags);
-                       ret = it->function(it->data);
-               } else
-               {
-                       PDEBUG(DEBUG_ISDN, "timer-indication not handled\n");
-               }
-               goto out;
-       }
+               /* we receive audio data, we respond to it AND we send tones */
+               case PH_DATA_IND:
+               case DL_DATA_IND:
+               case PH_DATA_REQ:
+               case DL_DATA_REQ:
+               case PH_CONTROL_IND:
+               if (mISDNport->b_port[i])
+                       mISDNport->b_port[i]->bchannel_receive(hh, buffer+MISDN_HEADER_LEN, ret-MISDN_HEADER_LEN);
+               else
+                       PDEBUG(DEBUG_BCHANNEL, "b-channel is not associated to an ISDNPort (socket %d), ignoring.\n", fd->fd);
+               break;
 
-       /* find the mISDNport that belongs to the stack */
-       mISDNport = mISDNport_first;
-       while(mISDNport)
-       {
-               if ((frm->addr&MASTER_ID_MASK) == (unsigned int)(mISDNport->upper_id&MASTER_ID_MASK))
-                       break;
-               mISDNport = mISDNport->next;
-       } 
-       if (!mISDNport)
-       {
-               PERROR("message belongs to no mISDNport: prim(0x%x) addr(0x%x) msg->len(%d)\n", frm->prim, frm->addr, msg->len);
-               // show a list of all mISDNports and their address
-#if 0
-               mISDNport = mISDNport_first;
-               while(mISDNport)
-               {
-                       PERROR(" port %s  %x -> %x\n", mISDNport->name, (frm->addr&MASTER_ID_MASK), (unsigned int)(mISDNport->upper_id&MASTER_ID_MASK));
-                       mISDNport = mISDNport->next;
-               } 
-#endif
-               goto out;
-       }
-
-       /* master stack */
-       if (!(frm->addr&FLG_CHILD_STACK))
-       {
-               /* d-message */
-               switch(frm->prim)
-               {
-                       case MGR_SHORTSTATUS | INDICATION:
-                       case MGR_SHORTSTATUS | CONFIRM:
-                       switch(frm->dinfo) {
-                               case SSTATUS_L1_ACTIVATED:
-                               l1l2l3_trace_header(mISDNport, NULL, L1_ACTIVATE_REQ | (frm->prim & 0x3), DIRECTION_IN);
-                               end_trace();
-                               goto ss_act;
-                               case SSTATUS_L1_DEACTIVATED:
-                               l1l2l3_trace_header(mISDNport, NULL, L1_DEACTIVATE_REQ | (frm->prim & 0x3), DIRECTION_IN);
-                               end_trace();
-                               goto ss_deact;
-                               case SSTATUS_L2_ESTABLISHED:
-                               l1l2l3_trace_header(mISDNport, NULL, L2_ESTABLISH_REQ | (frm->prim & 0x3), DIRECTION_IN);
-                               end_trace();
-                               goto ss_estab;
-                               case SSTATUS_L2_RELEASED:
-                               l1l2l3_trace_header(mISDNport, NULL, L2_RELEASE_REQ | (frm->prim & 0x3), DIRECTION_IN);
-                               end_trace();
-                               goto ss_rel;
-                       }
-                       break;
+               case PH_ACTIVATE_IND:
+               case DL_ESTABLISH_IND:
+               case PH_ACTIVATE_CNF:
+               case DL_ESTABLISH_CNF:
+               PDEBUG(DEBUG_BCHANNEL, "DL_ESTABLISH confirm: bchannel is now activated (socket %d).\n", fd->fd);
+               bchannel_event(mISDNport, i, B_EVENT_ACTIVATED);
+               break;
 
-                       case PH_ACTIVATE | CONFIRM:
-                       case PH_ACTIVATE | INDICATION:
-                       l1l2l3_trace_header(mISDNport, NULL, L1_ACTIVATE_REQ | (frm->prim & 0x3), DIRECTION_IN);
-                       end_trace();
-                       if (mISDNport->ntmode)
-                       {
-                               mISDNport->l1link = 1;
-                               setup_queue(mISDNport, 1);
-                               goto l1_msg;
-                       }
-                       ss_act:
-                       mISDNport->l1link = 1;
-                       setup_queue(mISDNport, 1);
-                       break;
+               case PH_DEACTIVATE_IND:
+               case DL_RELEASE_IND:
+               case PH_DEACTIVATE_CNF:
+               case DL_RELEASE_CNF:
+               PDEBUG(DEBUG_BCHANNEL, "DL_RELEASE confirm: bchannel is now de-activated (socket %d).\n", fd->fd);
+               bchannel_event(mISDNport, i, B_EVENT_DEACTIVATED);
+               break;
 
-                       case PH_DEACTIVATE | CONFIRM:
-                       case PH_DEACTIVATE | INDICATION:
-                       l1l2l3_trace_header(mISDNport, NULL, L1_DEACTIVATE_REQ | (frm->prim & 0x3), DIRECTION_IN);
-                       end_trace();
-                       if (mISDNport->ntmode)
-                       {
-                               mISDNport->l1link = 0;
-                               setup_queue(mISDNport, 0);
-                               goto l1_msg;
-                       }
-                       ss_deact:
-                       mISDNport->l1link = 0;
-                       setup_queue(mISDNport, 0);
-                       break;
+               default:
+               PERROR("child message not handled: prim(0x%x) socket(%d) msg->len(%d)\n", hh->prim, fd->fd, ret-MISDN_HEADER_LEN);
+       }
 
-                       case PH_CONTROL | CONFIRM:
-                       case PH_CONTROL | INDICATION:
-                       PDEBUG(DEBUG_ISDN, "Received PH_CONTROL for port %d (%s).\n", mISDNport->portnum, mISDNport->ifport->interface->name);
-                       break;
+       return 0;
+}
 
-                       case DL_ESTABLISH | INDICATION:
-                       case DL_ESTABLISH | CONFIRM:
-                       l1l2l3_trace_header(mISDNport, NULL, DL_ESTABLISH_REQ | (frm->prim & 0x3), DIRECTION_IN);
-                       end_trace();
-                       if (!mISDNport->ntmode) break; /* !!!!!!!!!!!!!!!! */
-                       ss_estab:
-                       if (!mISDNport->ntmode || mISDNport->ptp)
-                       {
-                               if (mISDNport->l2establish)
-                               {
-                                       mISDNport->l2establish = 0;
-                                       PDEBUG(DEBUG_ISDN, "the link became active before l2establish timer expiry.\n");
-                               }
-                               mISDNport->l2link = 1;
-                       }
-                       break;
+/* process timer events for bchannel handling */
+static int b_timer_timeout(struct lcr_timer *timer, void *instance, int i)
+{
+       struct mISDNport *mISDNport = (struct mISDNport *)instance;
 
-                       case DL_RELEASE | INDICATION:
-                       case DL_RELEASE | CONFIRM:
-                       l1l2l3_trace_header(mISDNport, NULL, DL_RELEASE_REQ | (frm->prim & 0x3), DIRECTION_IN);
-                       end_trace();
-                       if (!mISDNport->ntmode) break; /* !!!!!!!!!!!!!!!! */
-                       ss_rel:
-                       if (!mISDNport->ntmode || mISDNport->ptp)
-                       {
-                               mISDNport->l2link = 0;
-                               if (mISDNport->l2hold)
-                               {
-                                       time(&mISDNport->l2establish);
-                                       PDEBUG(DEBUG_ISDN, "because we are ptp, we set a l2establish timer.\n");
-                               }
-                       }
-                       break;
+       bchannel_event(mISDNport, i, B_EVENT_TIMEOUT);
 
-                       default:
-                       l1_msg:
-                       PDEBUG(DEBUG_STACK, "GOT d-msg from %s port %d prim 0x%x dinfo 0x%x addr 0x%x\n", (mISDNport->ntmode)?"NT":"TE", mISDNport->portnum, frm->prim, frm->dinfo, frm->addr);
-                       if (frm->dinfo==(signed long)0xffffffff && frm->prim==(PH_DATA|CONFIRM))
-                       {
-                               PERROR("SERIOUS BUG, dinfo == 0xffffffff, prim == PH_DATA | CONFIRM !!!!\n");
-                       }
-                       /* d-message */
-                       if (mISDNport->ntmode)
-                       {
-                               /* l1-data enters the nt-mode library */
-                               nst = &mISDNport->nst;
-                               if (nst->l1_l2(nst, msg))
-                                       free_msg(msg);
-                               return(1);
-                       } else
-                       {
-                               /* l3-data is sent to pbx */
-                               if (stack2manager_te(mISDNport, msg))
-                                       free_msg(msg);
-                               return(1);
-                       }
-               }
-       } else
-       /* child stack */
-       {
-               /* b-message */
-               switch(frm->prim)
-               {
-                       /* we don't care about confirms, we use rx data to sync tx */
-                       case PH_DATA | CONFIRM:
-                       case DL_DATA | CONFIRM:
-                       break;
+       return 0;
+}
 
-                       /* we receive audio data, we respond to it AND we send tones */
-                       case PH_DATA | INDICATION:
-                       case DL_DATA | INDICATION:
-                       case PH_CONTROL | INDICATION:
-                       case PH_SIGNAL | INDICATION:
-                       i = 0;
-                       while(i < mISDNport->b_num)
-                       {
-                               if ((unsigned int)(mISDNport->b_addr[i]&STACK_ID_MASK) == (frm->addr&STACK_ID_MASK))
-                                       break;
-                               i++;
-                       }
-                       if (i == mISDNport->b_num)
-                       {
-                               PERROR("unhandled b-message (prim 0x%x address 0x%x).\n", frm->prim, frm->addr);
-                               break;
-                       }
-                       if (mISDNport->b_port[i])
-                       {
-//PERROR("port sech: %s data\n", mISDNport->b_port[i]->p_name);
-                               mISDNport->b_port[i]->bchannel_receive(frm);
-                       } else
-                               PDEBUG(DEBUG_BCHANNEL, "b-channel is not associated to an ISDNPort (address 0x%x), ignoring.\n", frm->addr);
-                       break;
 
-                       case PH_ACTIVATE | INDICATION:
-                       case DL_ESTABLISH | INDICATION:
-                       case PH_ACTIVATE | CONFIRM:
-                       case DL_ESTABLISH | CONFIRM:
-                       PDEBUG(DEBUG_BCHANNEL, "DL_ESTABLISH confirm: bchannel is now activated (address 0x%x).\n", frm->addr);
-                       i = 0;
-                       while(i < mISDNport->b_num)
-                       {
-                               if ((unsigned int)(mISDNport->b_addr[i]&STACK_ID_MASK) == (frm->addr&STACK_ID_MASK))
-                                       break;
-                               i++;
-                       }
-                       if (i == mISDNport->b_num)
-                       {
-                               PERROR("unhandled b-establish (prim 0x%x address 0x%x).\n", frm->prim, frm->addr);
-                               break;
-                       }
-                       bchannel_event(mISDNport, i, B_EVENT_ACTIVATED);
-                       break;
-
-                       case PH_DEACTIVATE | INDICATION:
-                       case DL_RELEASE | INDICATION:
-                       case PH_DEACTIVATE | CONFIRM:
-                       case DL_RELEASE | CONFIRM:
-                       PDEBUG(DEBUG_BCHANNEL, "DL_RELEASE confirm: bchannel is now de-activated (address 0x%x).\n", frm->addr);
-                       i = 0;
-                       while(i < mISDNport->b_num)
-                       {
-                               if ((unsigned int)(mISDNport->b_addr[i]&STACK_ID_MASK) == (frm->addr&STACK_ID_MASK))
-                                       break;
-                               i++;
-                       }
-                       if (i == mISDNport->b_num)
-                       {
-                               PERROR("unhandled b-release (prim 0x%x address 0x%x).\n", frm->prim, frm->addr);
-                               break;
-                       }
-                       bchannel_event(mISDNport, i, B_EVENT_DEACTIVATED);
-                       break;
-
-                       default:
-                       PERROR("child message not handled: prim(0x%x) addr(0x%x) msg->len(%d)\n", frm->prim, frm->addr, msg->len);
-               }
-       }
-
-       out:
-       free_msg(msg);
-       return(1);
-}
-#endif
-
-#ifdef SOCKET_MISDN
 int do_layer3(struct mlayer3 *ml3, unsigned int cmd, unsigned int pid, struct l3_msg *l3m)
 {
        /* IMPORTAINT:
@@ -2907,6 +1728,7 @@ int do_layer3(struct mlayer3 *ml3, unsigned int cmd, unsigned int pid, struct l3
        struct mISDNport *mISDNport = (struct mISDNport *)ml3->priv;
        struct mbuffer *mb;
 
+#ifdef OLD_MT_ASSIGN
        /* special MT_ASSIGN handling:
         *
         * if we request a PID from mlayer, we always do it while lcr is locked.
@@ -2917,18 +1739,16 @@ int do_layer3(struct mlayer3 *ml3, unsigned int cmd, unsigned int pid, struct l3
         * we must check if we get a reply and we know that we lcr is currently
         * locked.
         */
-       if (cmd==MT_ASSIGN && (pid&MISDN_PID_CR_FLAG) && (pid>>16)==MISDN_CES_MASTER)
-       {
+       if (cmd==MT_ASSIGN && (pid&MISDN_PID_CR_FLAG) && (pid>>16)==MISDN_CES_MASTER) {
                /* let's do some checking if someone changes stack behaviour */
                if (mt_assign_pid != 0)
                        FATAL("someone played with the mISDNuser stack. MT_ASSIGN not currently expected.\n");
                mt_assign_pid = pid;
                return(0);
        }
-       
+#endif
        /* queue message, create, if required */
-       if (!l3m)
-       {
+       if (!l3m) {
                l3m = alloc_l3_msg();
                if (!l3m)
                        FATAL("No memory for layer 3 message\n");
@@ -2937,123 +1757,170 @@ int do_layer3(struct mlayer3 *ml3, unsigned int cmd, unsigned int pid, struct l3
        l3m->type = cmd;
        l3m->pid = pid;
        mqueue_tail(&mISDNport->upqueue, mb);
+       if (!upqueue_avail) {
+               // multiple threads may cause multiple calls of this section, but this
+               // results only in multiple processing of the upqueue read.
+               // this is no problem.
+               upqueue_avail = 1;
+               char byte = 0;
+               int ret;
+               ret = write(upqueue_pipe[1], &byte, 1);
+       }
        return 0;
 }
 
-#endif
+int mISDN_getportbyname(int sock, int cnt, char *portname)
+{
+       struct mISDN_devinfo devinfo;
+       int port = 0, ret;
+
+       /* resolve name */
+       while (port < cnt) {
+               devinfo.id = port;
+               ret = ioctl(sock, IMGETDEVINFO, &devinfo);
+               if (ret < 0)
+                       return ret;
+               if (!strcasecmp(devinfo.name, portname))
+                       break;
+               port++;
+       }
+       if (port == cnt)
+               return -EIO;
+
+       return (port);
+}
+
+/* handle frames from pots */
+static int pots_sock_callback(struct lcr_fd *fd, unsigned int what, void *instance, int i)
+{
+       struct mISDNport *mISDNport = (struct mISDNport *)instance;
+       unsigned char buffer[2048+MISDN_HEADER_LEN];
+       struct mISDNhead *hh = (struct mISDNhead *)buffer;
+       unsigned int cont;
+       int ret;
+
+       ret = recv(fd->fd, buffer, sizeof(buffer), 0);
+       if (ret < 0) {
+               PERROR("read error frame, errno %d\n", errno);
+               return 0;
+       }
+       if (ret < (int)MISDN_HEADER_LEN) {
+               PERROR("read short frame, got %d, expected %d\n", ret, (int)MISDN_HEADER_LEN);
+               return 0;
+       }
+       switch(hh->prim) {
+       case PH_CONTROL_IND:
+               cont = *((unsigned int *)(buffer + MISDN_HEADER_LEN));
+               /* l1-control is sent to LCR */
+               if (mISDNport->ntmode)
+                       stack2manager_fxs(mISDNport, cont);
+               else
+                       PERROR("FXO not supported!\n");
+               break;
+       case PH_ACTIVATE_REQ:
+               break;
 
+       default:
+               PERROR("child message not handled: prim(0x%x) socket(%d) msg->len(%d)\n", hh->prim, fd->fd, ret-MISDN_HEADER_LEN);
+       }
+
+       return 0;
+}
 
 /*
  * global function to add a new card (port)
  */
-struct mISDNport *mISDNport_open(int port, int ptp, int force_nt, int l2hold, struct interface *interface)
+struct mISDNport *mISDNport_open(struct interface_port *ifport)
 {
        int ret;
        struct mISDNport *mISDNport, **mISDNportp;
+       int port = ifport->portnum;
+       int ptp = ifport->ptp;
+       int force_nt = ifport->nt;
+       int l1hold = ifport->l1hold;
+       int l2hold = ifport->l2hold;
+       int ss5 = ifport->ss5;
        int i, cnt;
        int pri, bri, pots;
        int nt, te;
-#ifdef SOCKET_MISDN
 //     struct mlayer3 *ml3;
        struct mISDN_devinfo devinfo;
        unsigned int protocol, prop;
 
+       /* check port counts */
        ret = ioctl(mISDNsocket, IMGETCOUNT, &cnt);
-       if (ret < 0)
-       {
+       if (ret < 0) {
                fprintf(stderr, "Cannot get number of mISDN devices. (ioctl IMGETCOUNT failed ret=%d)\n", ret);
                return(NULL);
        }
-#else
-       unsigned char buff[1025];
-       iframe_t *frm = (iframe_t *)buff;
-//     interface_info_t ii;
-       net_stack_t *nst;
-       manager_t *mgr;
-       layer_info_t li;
-       stack_info_t *stinf;
-
-       /* query port's requirements */
-       cnt = mISDN_get_stack_count(mISDNdevice);
-#endif
 
-       if (cnt <= 0)
-       {
+       if (cnt <= 0) {
                PERROR_RUNTIME("Found no card. Please be sure to load card drivers.\n");
                return(NULL);
        }
-       if (port>cnt || port<1)
-       {
-               PERROR_RUNTIME("Port (%d) given at 'ports' (options.conf) is out of existing port range (%d-%d)\n", port, 1, cnt);
+       if (port < 0) {
+               port = mISDN_getportbyname(mISDNsocket, cnt, ifport->portname);
+               if (port < 0) {
+                       PERROR_RUNTIME("Port name '%s' not found, use 'misdn_info' tool to list all existing ports.\n", ifport->portname);
+                       return(NULL);
+               }
+               // note: 'port' has still the port number
+       }
+       if (port>cnt || port<0) {
+               PERROR_RUNTIME("Port (%d) given at 'ports' (options.conf) is out of existing port range (%d-%d)\n", port, 0, cnt);
                return(NULL);
        }
 
+       /* get port attributes */
        pri = bri = pots = nt = te = 0;
-#ifdef SOCKET_MISDN
-       devinfo.id = port - 1;
+       devinfo.id = port;
        ret = ioctl(mISDNsocket, IMGETDEVINFO, &devinfo);
-       if (ret < 0)
-       {
-               PERROR_RUNTIME("Cannot get device information for port %d. (ioctl IMGETDEVINFO failed ret=%d)\n", i, ret);
+       if (ret < 0) {
+               PERROR_RUNTIME("Cannot get device information for port %d. (ioctl IMGETDEVINFO failed ret=%d)\n", port, ret);
                return(NULL);
        }
-       /* output the port info */
-       if (devinfo.Dprotocols & (1 << ISDN_P_TE_S0))
-       {
+       if (devinfo.Dprotocols & (1 << ISDN_P_TE_S0)) {
                bri = 1;
                te = 1;
        }
-       if (devinfo.Dprotocols & (1 << ISDN_P_NT_S0))
-       {
+       if (devinfo.Dprotocols & (1 << ISDN_P_NT_S0)) {
                bri = 1;
                nt = 1;
        }
-       if (devinfo.Dprotocols & (1 << ISDN_P_TE_E1))
-       {
+       if (devinfo.Dprotocols & (1 << ISDN_P_TE_E1)) {
                pri = 1;
                te = 1;
        }
-       if (devinfo.Dprotocols & (1 << ISDN_P_NT_E1))
-       {
+       if (devinfo.Dprotocols & (1 << ISDN_P_NT_E1)) {
                pri = 1;
                nt = 1;
        }
-#ifdef ISDN_P_FXS
-       if (devinfo.Dprotocols & (1 << ISDN_P_FXS))
-       {
+#ifdef ISDN_P_FXS_POTS
+       if (devinfo.Dprotocols & (1 << ISDN_P_FXO_POTS)) {
                pots = 1;
                te = 1;
        }
-#endif
-#ifdef ISDN_P_FXO
-       if (devinfo.Dprotocols & (1 << ISDN_P_FXO))
-       {
+       if (devinfo.Dprotocols & (1 << ISDN_P_FXS_POTS)) {
                pots = 1;
                nt = 1;
        }
 #endif
-       if (force_nt && !nt)
-       {
-               PERROR_RUNTIME("Port %d does not support NT-mode\n", port);
+       if (force_nt && !nt) {
+               if (!pots)
+                       PERROR_RUNTIME("Port %d does not support NT-mode\n", port);
+               else
+                       PERROR_RUNTIME("Port %d does not support FXS-mode\n", port);
                return(NULL);
        }
-       if (bri && pri)
-       {
+       if (bri && pri) {
                PERROR_RUNTIME("Port %d supports BRI and PRI?? What kind of controller is that?. (Can't use this!)\n", port);
                return(NULL);
        }
-       if (pots && !bri && !pri)
-       {
-               PERROR_RUNTIME("Port %d supports POTS, LCR does not!\n", port);
-               return(NULL);
-       }
-       if (!bri && !pri)
-       {
-               PERROR_RUNTIME("Port %d does not support BRI nor PRI!\n", port);
+       if (!bri && !pri && !pots) {
+               PERROR_RUNTIME("Port %d does not support BRI nor PRI nor POTS!\n", port);
                return(NULL);
        }
-       if (!nt && !te)
-       {
+       if (!nt && !te) {
                PERROR_RUNTIME("Port %d does not support NT-mode nor TE-mode!\n", port);
                return(NULL);
        }
@@ -3063,102 +1930,75 @@ struct mISDNport *mISDNport_open(int port, int ptp, int force_nt, int l2hold, st
        /* if TE an NT is supported (and not forced to NT), turn off NT */
        if (te && nt)
                nt = 0;
-#else
-       ret = mISDN_get_stack_info(mISDNdevice, port, buff, sizeof(buff));
-       if (ret < 0)
-       {
-               PERROR_RUNTIME("Cannot get stack info for port %d (ret=%d)\n", port, ret);
+       if (pots && te) {
+               PERROR_RUNTIME("Port %d uses FXO-mode, but not supported by LCR!\n", port);
                return(NULL);
        }
-       stinf = (stack_info_t *)&frm->data.p;
-       switch(stinf->pid.protocol[0] & ~ISDN_PID_FEATURE_MASK)
-       {
-               case ISDN_PID_L0_TE_S0:
-               PDEBUG(DEBUG_ISDN, "TE-mode BRI S/T interface line\n");
-               break;
-               case ISDN_PID_L0_NT_S0:
-               PDEBUG(DEBUG_ISDN, "NT-mode BRI S/T interface port\n");
-               nt = 1;
-               break;
-               case ISDN_PID_L0_TE_E1:
-               PDEBUG(DEBUG_ISDN, "TE-mode PRI E1  interface line\n");
-               pri = 1;
-               break;
-               case ISDN_PID_L0_NT_E1:
-               PDEBUG(DEBUG_ISDN, "LT-mode PRI E1  interface port\n");
-               pri = 1;
-               nt = 1;
-               break;
-               default:
-               PERROR_RUNTIME("unknown port(%d) type 0x%08x\n", port, stinf->pid.protocol[0]);
-               return(NULL);
-       }
-       if (nt)
-       {
-               /* NT */
-               if (stinf->pid.protocol[1] == 0)
-               {
-                       PERROR_RUNTIME("Given port %d: Missing layer 1 NT-mode protocol.\n", port);
-                       return(NULL);
+
+       /* check for double use of port */
+       if (nt) {
+               mISDNport = mISDNport_first;
+               while(mISDNport) {
+                       if (mISDNport->portnum == port)
+                               break;
+                       mISDNport = mISDNport->next;
                }
-               if (stinf->pid.protocol[2])
-               {
-                       PERROR_RUNTIME("Given port %d: Layer 2 protocol 0x%08x is detected, but not allowed for NT lib.\n", port, stinf->pid.protocol[2]);
+               if (mISDNport) {
+                       PERROR_RUNTIME("Port %d already in use by LCR. You can't use a NT port multiple times.\n", port);
                        return(NULL);
                }
        }
-       if (te)
-       {
-               /* TE */
-               if (stinf->pid.protocol[1] == 0)
-               {
-                       PERROR_RUNTIME("Given port %d: Missing layer 1 protocol.\n", port);
-                       return(NULL);
-               }
-               if (stinf->pid.protocol[2] == 0)
-               {
-                       PERROR_RUNTIME("Given port %d: Missing layer 2 protocol.\n", port);
-                       return(NULL);
-               }
-               if (stinf->pid.protocol[3] == 0)
-               {
-                       PERROR_RUNTIME("Given port %d: Missing layer 3 protocol.\n", port);
-                       return(NULL);
-               } else
-               {
-                       switch(stinf->pid.protocol[3] & ~ISDN_PID_FEATURE_MASK)
-                       {
-                               case ISDN_PID_L3_DSS1USER:
-                               break;
 
-                               default:
-                               PERROR_RUNTIME("Given port %d: own protocol 0x%08x", port,stinf->pid.protocol[3]);
+       /* check for continous channelmap with no bchannel on slot 16 */
+       if (test_channelmap(0, devinfo.channelmap)) {
+               PERROR_RUNTIME("Port %d provides channel 0, but we cannot access it!\n", port);
+               return(NULL);
+       }
+       i = 1;
+       while(i < (int)devinfo.nrbchan + 1) {
+               if (i == 16) {
+                       if (test_channelmap(i, devinfo.channelmap)) {
+                               PERROR("Port %d provides bchannel 16. Pleas upgrade mISDN, if this port is mISDN loopback interface.\n", port);
+                               return(NULL);
+                       }
+               } else {
+                       if (!test_channelmap(i, devinfo.channelmap)) {
+                               PERROR_RUNTIME("Port %d has no channel on slot %d!\n", port, i);
                                return(NULL);
                        }
                }
-               if (stinf->pid.protocol[4])
-               {
-                       PERROR_RUNTIME("Given port %d: Layer 4 protocol not allowed.\n", port);
-                       return(NULL);
-               }
+               i++;
        }
-#endif
 
        /* add mISDNport structure */
        mISDNportp = &mISDNport_first;
        while(*mISDNportp)
                mISDNportp = &((*mISDNportp)->next);
        mISDNport = (struct mISDNport *)MALLOC(sizeof(struct mISDNport));
+       add_timer(&mISDNport->l2establish, l2establish_timeout, mISDNport, 0);
+       if (ss5) {
+               /* ss5 link is always active */
+               mISDNport->l1link = 1;
+               mISDNport->l2link = 1;
+       } else {
+               mISDNport->l1link = -1;
+               mISDNport->l2link = -1;
+       }
        pmemuse++;
        *mISDNportp = mISDNport;
 
        /* if pri, must set PTP */
        if (pri)
                ptp = 1;
-       
+
+       /* set ss5 params */
+       if (ss5) {
+               /* try to keep interface enabled */
+               l1hold = 1;
+               l2hold = 0;
+       }
        /* set l2hold */
-       switch (l2hold)
-       {
+       switch (l2hold) {
                case -1: // off
                l2hold = 0;
                break;
@@ -3174,241 +2014,154 @@ struct mISDNport *mISDNport_open(int port, int ptp, int force_nt, int l2hold, st
        }
                
        /* allocate ressources of port */
-#ifdef SOCKET_MISDN
-       /* open layer 3 and init upqueue */
-       protocol = (nt)?L3_PROTOCOL_DSS1_NET:L3_PROTOCOL_DSS1_USER;
-       prop = (1 << MISDN_FLG_L2_CLEAN);
-       if (ptp) // ptp forced
-              prop |= (1 << MISDN_FLG_PTP);
-       if (nt) // supports hold/retrieve on nt-mode
-              prop |= (1 << MISDN_FLG_NET_HOLD);
-       if (l2hold) // supports layer 2 hold
-              prop |= (1 << MISDN_FLG_L2_HOLD);
-       /* queue must be initializes, because l3-thread may send messages during open_layer3() */
-       mqueue_init(&mISDNport->upqueue);
-       mISDNport->ml3 = open_layer3(port-1, protocol, prop , do_layer3, mISDNport);
-       if (!mISDNport->ml3)
-       {
-               mqueue_purge(&mISDNport->upqueue);
-               PERROR_RUNTIME("open_layer3() failed for port %d\n", port);
-               start_trace(port,
-                       interface,
-                       NULL,
-                       NULL,
-                       DIRECTION_NONE,
-                       CATEGORY_CH,
-                       0,
-                       "PORT (open failed)");
-               end_trace();
-               mISDNport_close(mISDNport);
-               return(NULL);
-       }
-
-#if 0
-       /* if ntmode, establish L1 to send the tei removal during start */
-       if (mISDNport->ntmode)
-       {
-               iframe_t act;
-               /* L1 */
-               act.prim = PH_ACTIVATE | REQUEST; 
-               act.addr = mISDNport->upper_id | FLG_MSG_DOWN;
-               printf("UPPER ID 0x%x, addr 0x%x\n",mISDNport->upper_id, act.addr);
-               act.dinfo = 0;
-               act.len = 0;
-               mISDN_write(mISDNdevice, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
-               usleep(10000); /* to be sure, that l1 is up */
-       }
-#endif
-
-       SCPY(mISDNport->name, devinfo.name);
-       mISDNport->b_num = devinfo.nrbchan;
-#else
-       msg_queue_init(&mISDNport->downqueue);
-       mISDNport->d_stid = stinf->id;
-       PDEBUG(DEBUG_ISDN, "d_stid = 0x%x.\n", mISDNport->d_stid);
-
-       /* create layer intance */
-       memset(&li, 0, sizeof(li));
-       UCPY(&li.name[0], (nt)?"net l2":"pbx l4");
-       li.object_id = -1;
-       li.extentions = 0;
-       li.pid.protocol[nt?2:4] = (nt)?ISDN_PID_L2_LAPD_NET:ISDN_PID_L4_CAPI20;
-       li.pid.layermask = ISDN_LAYER((nt?2:4));
-       li.st = mISDNport->d_stid;
-       ret = mISDN_new_layer(mISDNdevice, &li);
-       if (ret)
-       {
-               PERROR("Cannot add layer %d of port %d (ret %d)\n", nt?2:4, port, ret);
-               closeport:
-               mISDNport_close(mISDNport);
-               return(NULL);
-       }
-       mISDNport->upper_id = li.id;
-       ret = mISDN_register_layer(mISDNdevice, mISDNport->d_stid, mISDNport->upper_id);
-       if (ret)
-       {
-               PERROR("Cannot register layer %d of port %d\n", nt?2:4, port);
-               goto closeport;
-       }
-       mISDNport->lower_id = mISDN_get_layerid(mISDNdevice, mISDNport->d_stid, nt?1:3); // id of lower layer (nt=1, te=3)
-       if (mISDNport->lower_id < 0)
-       {
-               PERROR("Cannot get layer(%d) id of port %d\n", nt?1:3, port);
-               goto closeport;
-       }
-       mISDNport->upper_id = mISDN_get_layerid(mISDNdevice, mISDNport->d_stid, nt?2:4); // id of uppermost layer (nt=2, te=4)
-       if (mISDNport->upper_id < 0)
-       {
-               PERROR("Cannot get layer(%d) id of port %d\n", nt?2:4, port);
-               goto closeport;
-       }
-       PDEBUG(DEBUG_ISDN, "Layer %d of port %d added.\n", nt?2:4, port);
-
-       /* if ntmode, establish L1 to send the tei removal during start */
-       if (mISDNport->ntmode)
-       {
-               iframe_t act;
-               /* L1 */
-               act.prim = PH_ACTIVATE | REQUEST; 
-               act.addr = mISDNport->upper_id | FLG_MSG_DOWN;
-               printf("UPPER ID 0x%x, addr 0x%x\n",mISDNport->upper_id, act.addr);
-               act.dinfo = 0;
-               act.len = 0;
-               mISDN_write(mISDNdevice, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
-               usleep(10000); /* to be sure, that l1 is up */
-       }
-
-       /* create nst (nt-mode only) */
-       if (nt)
-       {
-               mgr = &mISDNport->mgr;
-               nst = &mISDNport->nst;
-
-               mgr->nst = nst;
-               nst->manager = mgr;
-
-               nst->l3_manager = stack2manager_nt; /* messages from nt-mode */
-               nst->device = mISDNdevice;
-               nst->cardnr = port;
-               nst->d_stid = mISDNport->d_stid;
-
-               nst->feature = FEATURE_NET_HOLD;
-               if (ptp)
-                       nst->feature |= FEATURE_NET_PTP;
-               if (pri)
-                       nst->feature |= FEATURE_NET_CRLEN2 | FEATURE_NET_EXTCID;
-#if 0
-               i = 0;
-               while(i < mISDNport->b_num)
-               {
-                       nst->b_stid[i] = mISDNport->b_stid[i];
-                       i++;
+       if (!pots) {
+               /* ISDN */
+               protocol = (nt)?L3_PROTOCOL_DSS1_NET:L3_PROTOCOL_DSS1_USER;
+               prop = (1 << MISDN_FLG_L2_CLEAN);
+               if (ptp) // ptp forced
+                      prop |= (1 << MISDN_FLG_PTP);
+               if (nt) // supports hold/retrieve on nt-mode
+                      prop |= (1 << MISDN_FLG_NET_HOLD);
+               if (l1hold) // supports layer 1 hold
+                      prop |= (1 << MISDN_FLG_L1_HOLD);
+               if (l2hold) // supports layer 2 hold
+                      prop |= (1 << MISDN_FLG_L2_HOLD);
+               /* open layer 3 and init upqueue */
+               /* queue must be initializes, because l3-thread may send messages during open_layer3() */
+               mqueue_init(&mISDNport->upqueue);
+               mISDNport->ml3 = open_layer3(port, protocol, prop , do_layer3, mISDNport);
+               if (!mISDNport->ml3) {
+                       mqueue_purge(&mISDNport->upqueue);
+                       PERROR_RUNTIME("open_layer3() failed for port %d\n", port);
+                       start_trace(port,
+                               ifport->interface,
+                               NULL,
+                               NULL,
+                               DIRECTION_NONE,
+                               CATEGORY_CH,
+                               0,
+                               "PORT (open failed)");
+                       end_trace();
+                       mISDNport_close(mISDNport);
+                       return(NULL);
                }
+       } else {
+#ifdef ISDN_P_FXS_POTS
+               /* POTS */
+               int sock, ret;
+               struct sockaddr_mISDN addr;
+               struct mISDNhead act;
+
+               /* open socket */
+               /* queue must be initializes, because even pots interfaces are checked at mISDN_upqueue loop */
+               mqueue_init(&mISDNport->upqueue);
+               sock = socket(PF_ISDN, SOCK_DGRAM, (nt) ? ISDN_P_FXS_POTS : ISDN_P_FXO_POTS);
+               if (sock < 0) {
+                       PERROR_RUNTIME("Cannot open mISDN due to '%s'.\n", strerror(errno));
+                       return NULL;
+               }
+               /* bind socket to dchannel */
+               addr.family = AF_ISDN;
+               addr.dev = port;
+               addr.channel = 0;
+               ret = bind(sock, (struct sockaddr *)&addr, sizeof(addr));
+               if (ret < 0) {
+                       PERROR_RUNTIME("Error: Failed to bind pots control channel\n");
+                       start_trace(port,
+                               ifport->interface,
+                               NULL,
+                               NULL,
+                               DIRECTION_NONE,
+                               CATEGORY_CH,
+                               0,
+                               "PORT (open failed)");
+                       end_trace();
+                       return(NULL);
+               }
+               act.prim = PH_ACTIVATE_REQ; 
+               act.id = 0;
+               ret = sendto(sock, &act, MISDN_HEADER_LEN, 0, NULL, 0);
+               if (ret <= 0)
+                       PERROR("Failed to send to socket %d\n", sock);
+               mISDNport->pots_sock.fd = sock;
+               register_fd(&mISDNport->pots_sock, LCR_FD_READ, pots_sock_callback, mISDNport, i);
 #endif
-               nst->l1_id = mISDNport->lower_id;
-               nst->l2_id = mISDNport->upper_id;
-
-               /* phd */       
-               msg_queue_init(&nst->down_queue);
-
-               Isdnl2Init(nst);
-               Isdnl3Init(nst);
        }
 
-       mISDNport->b_num = stinf->childcnt;
-#endif
+       SCPY(mISDNport->name, devinfo.name);
+       mISDNport->b_num = devinfo.nrbchan;
        mISDNport->portnum = port;
        mISDNport->ntmode = nt;
+       mISDNport->pots = pots;
+       mISDNport->tespecial = ifport->tespecial;
        mISDNport->pri = pri;
        mISDNport->ptp = ptp;
+       mISDNport->l1hold = l1hold;
        mISDNport->l2hold = l2hold;
+       mISDNport->ss5 = ss5;
        PDEBUG(DEBUG_ISDN, "Port has %d b-channels.\n", mISDNport->b_num);
        i = 0;
-       while(i < mISDNport->b_num)
-       {
+       while(i < mISDNport->b_num) {
                mISDNport->b_state[i] = B_STATE_IDLE;
-#ifdef SOCKET_MISDN
-               mISDNport->b_socket[i] = -1;
-#else
-               mISDNport->b_stid[i] = stinf->child[i];
-               PDEBUG(DEBUG_ISDN, "b_stid[%d] = 0x%x.\n", i, mISDNport->b_stid[i]);
-#endif
+               add_timer(&mISDNport->b_timer[i], b_timer_timeout, mISDNport, i);
                i++;
        }
 
-#ifdef SOCKET_MISDN
        /* if ptp, pull up the link */
-       if (mISDNport->l2hold && (mISDNport->ptp || !mISDNport->ntmode))
-       {
+       if (!pots && mISDNport->l2hold && (mISDNport->ptp || !mISDNport->ntmode)) {
                mISDNport->ml3->to_layer3(mISDNport->ml3, MT_L2ESTABLISH, 0, NULL);
                l1l2l3_trace_header(mISDNport, NULL, L2_ESTABLISH_REQ, DIRECTION_OUT);
                add_trace("tei", NULL, "%d", 0);
                end_trace();
-               time(&mISDNport->l2establish);
+               schedule_timer(&mISDNport->l2establish, 5, 0); /* 5 seconds */
        }
-#else
-       /* if te-mode, query state link */
-       if (!mISDNport->ntmode)
-       {
-               iframe_t act;
-               /* L2 */
-               PDEBUG(DEBUG_ISDN, "sending short status request for port %d.\n", port);
-               act.prim = MGR_SHORTSTATUS | REQUEST; 
-               act.addr = mISDNport->upper_id | MSG_BROADCAST;
-               act.dinfo = SSTATUS_BROADCAST_BIT | SSTATUS_ALL;
-               act.len = 0;
-               mISDN_write(mISDNdevice, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
-       }
-       /* if ptp AND te-mode, pull up the link */
-       if (mISDNport->l2hold && !mISDNport->ntmode)
-       {
-               iframe_t act;
-               /* L2 */
-               act.prim = DL_ESTABLISH | REQUEST; 
-               act.addr = (mISDNport->upper_id & ~LAYER_ID_MASK) | 4 | FLG_MSG_DOWN;
-               act.dinfo = 0;
-               act.len = 0;
-               mISDN_write(mISDNdevice, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
 
-               l1l2l3_trace_header(mISDNport, NULL, L2_ESTABLISH_REQ, DIRECTION_OUT);
-               end_trace();
-               time(&mISDNport->l2establish);
-       }
-       /* if ptp AND nt-mode, pull up the link */
-       if (mISDNport->l2hold && mISDNport->ntmode && mISDNport->ptp)
-       {
-               msg_t *dmsg;
-               /* L2 */
-               dmsg = create_l2msg(DL_ESTABLISH | REQUEST, 0, 0);
-               if (mISDNport->nst.manager_l3(&mISDNport->nst, dmsg))
-                       free_msg(dmsg);
-               l1l2l3_trace_header(mISDNport, NULL, L2_ESTABLISH_REQ, DIRECTION_OUT);
-               end_trace();
-               time(&mISDNport->l2establish);
-       }
-#endif
-
-       /* initially, we assume that the link is down, exept for nt-ptmp */
-       mISDNport->l2link = (mISDNport->ntmode && !mISDNport->ptp)?1:0;
+       /* for POTS or nt-mode ptmp the link is always up */
+       if (pots || (mISDNport->ntmode && !mISDNport->ptp))
+               mISDNport->l2link = 1;
 
        PDEBUG(DEBUG_BCHANNEL, "using 'mISDN_dsp.o' module\n");
 
        start_trace(mISDNport->portnum,
-                   interface,
+                   ifport->interface,
                    NULL,
                    NULL,
                    DIRECTION_NONE,
                    CATEGORY_CH,
                    0,
                    "PORT (open)");
-       add_trace("mode", NULL, (mISDNport->ntmode)?"network":"terminal");
+       if (!pots)
+               add_trace("mode", NULL, (mISDNport->ntmode)?"network":"terminal");
+       else
+               add_trace("mode", NULL, (mISDNport->ntmode)?"FXS":"FXO");
        add_trace("channels", NULL, "%d", mISDNport->b_num);
+       if (mISDNport->ss5)
+               add_trace("ccitt#5", NULL, "enabled");
        end_trace();
+
        return(mISDNport);
 }
 
 
 /*
+ * load static port instances, if required by mISDNport
+ */
+void mISDNport_static(struct mISDNport *mISDNport)
+{
+       int i;
+
+       i = 0;
+       while(i < mISDNport->b_num) {
+#ifdef WITH_SS5
+               if (mISDNport->ss5)
+                       ss5_create_channel(mISDNport, i);
+#endif
+               i++;
+       }
+}
+
+
+/*
  * function to free ALL cards (ports)
  */
 void mISDNport_close_all(void)
@@ -3426,32 +2179,25 @@ void mISDNport_close(struct mISDNport *mISDNport)
        struct mISDNport **mISDNportp;
        class Port *port;
        class PmISDN *isdnport;
-#ifdef SOCKET_MISDN
-#else
-       net_stack_t *nst;
-       unsigned char buf[32];
-#endif
        int i;
 
        /* remove all port instance that are linked to this mISDNport */
+       again:
        port = port_first;
-       while(port)
-       {
-               if ((port->p_type&PORT_CLASS_MASK) == PORT_CLASS_mISDN)
-               {
+       while(port) {
+               if ((port->p_type&PORT_CLASS_MASK) == PORT_CLASS_mISDN) {
                        isdnport = (class PmISDN *)port;
-                       if (isdnport->p_m_mISDNport)
-                       {
+                       if (isdnport->p_m_mISDNport && isdnport->p_m_mISDNport == mISDNport) {
                                PDEBUG(DEBUG_ISDN, "port %s uses mISDNport %d, destroying it.\n", isdnport->p_name, mISDNport->portnum);
                                delete isdnport;
+                               goto again;
                        }
                }
                port = port->next;
        }
 
        /* only if we are already part of interface */
-       if (mISDNport->ifport)
-       {
+       if (mISDNport->ifport) {
                start_trace(mISDNport->portnum,
                            mISDNport->ifport->interface,
                            NULL,
@@ -3465,62 +2211,36 @@ void mISDNport_close(struct mISDNport *mISDNport)
 
        /* free bchannels */
        i = 0;
-       while(i < mISDNport->b_num)
-       {
-#ifdef SOCKET_MISDN
-               if (mISDNport->b_socket[i] > -1)
-#else
-               if (mISDNport->b_addr[i])
-#endif
-               {
+       while(i < mISDNport->b_num) {
+               if (mISDNport->b_sock[i].inuse) {
                        _bchannel_destroy(mISDNport, i);
                        PDEBUG(DEBUG_BCHANNEL, "freeing %s port %d bchannel (index %d).\n", (mISDNport->ntmode)?"NT":"TE", mISDNport->portnum, i);
                }
+               if (mISDNport->b_timer[i].inuse) {
+                       del_timer(&mISDNport->b_timer[i]);
+               }
                i++;
        }
+       del_timer(&mISDNport->l2establish);
 
-#ifdef SOCKET_MISDN
-       /* close layer 3, if open and purge upqueue */
-       if (mISDNport->ml3)
-       {
+       /* close layer 3, if open */
+       if (mISDNport->ml3) {
                close_layer3(mISDNport->ml3);
-               mqueue_purge(&mISDNport->upqueue);
-       }
-#else
-       /* free ressources of port */
-       msg_queue_purge(&mISDNport->downqueue);
-
-       /* free stacks */
-       if (mISDNport->ntmode)
-       {
-               nst = &mISDNport->nst;
-               if (nst->manager) /* to see if initialized */
-               {
-                       PDEBUG(DEBUG_STACK, "the following messages are ok: one L3 process always exists (broadcast process) and some L2 instances (broadcast + current telephone's instances)\n");
-                       cleanup_Isdnl3(nst);
-                       cleanup_Isdnl2(nst);
-
-                       /* phd */
-                       msg_queue_purge(&nst->down_queue);
-                       if (nst->phd_down_msg)
-                               FREE(nst->phd_down_msg, 0);
-               }
        }
 
-       PDEBUG(DEBUG_BCHANNEL, "freeing d-stack.\n");
-       if (mISDNport->d_stid)
-       {
-               if (mISDNport->upper_id)
-                       mISDN_write_frame(mISDNdevice, buf, mISDNport->upper_id | FLG_MSG_DOWN, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
+       /* close layer 1, if open */
+       if (mISDNport->pots_sock.fd) {
+               unregister_fd(&mISDNport->pots_sock);
+               close(mISDNport->pots_sock.fd);
        }
-#endif
+
+       /* purge upqueue */
+       mqueue_purge(&mISDNport->upqueue);
 
        /* remove from list */
        mISDNportp = &mISDNport_first;
-       while(*mISDNportp)
-       {
-               if (*mISDNportp == mISDNport)
-               {
+       while(*mISDNportp) {
+               if (*mISDNportp == mISDNport) {
                        *mISDNportp = (*mISDNportp)->next;
                        mISDNportp = NULL;
                        break;
@@ -3538,353 +2258,119 @@ void mISDNport_close(struct mISDNport *mISDNport)
 
 
 /*
- * global function to show all available isdn ports
- */
-void mISDN_port_info(void)
-{
-       int ret;
-       int i, ii;
-       int useable, nt, te, pri, bri, pots;
-#ifdef SOCKET_MISDN
-       struct mISDN_devinfo devinfo;
-       int sock;
-
-       /* open mISDN */
-       sock = socket(PF_ISDN, SOCK_RAW, ISDN_P_BASE);
-       if (sock < 0)
-       {
-               fprintf(stderr, "Cannot open mISDN due to %s. (Does your Kernel support socket based mISDN?)\n", strerror(errno));
-               exit(EXIT_FAILURE);
-       }
-
-       /* get number of stacks */
-       i = 1;
-       ret = ioctl(sock, IMGETCOUNT, &ii);
-       if (ret < 0)
-       {
-               fprintf(stderr, "Cannot get number of mISDN devices. (ioctl IMGETCOUNT failed ret=%d)\n", ret);
-               goto done;
-       }
-#else
-       int p;
-       unsigned char buff[1025];
-       iframe_t *frm = (iframe_t *)buff;
-       stack_info_t *stinf;
-       int device;
-
-       /* open mISDN */
-       if ((device = mISDN_open()) < 0)
-       {
-               fprintf(stderr, "Cannot open mISDN device ret=%d errno=%d (%s) Check for mISDN modules!\nAlso did you create \"/dev/mISDN\"? Do: \"mknod /dev/mISDN c 46 0\"\n", device, errno, strerror(errno));
-               exit(EXIT_FAILURE);
-       }
-
-       /* get number of stacks */
-       i = 1;
-       ii = mISDN_get_stack_count(device);
-#endif
-       printf("\n");
-       if (ii <= 0)
-       {
-               printf("Found no card. Please be sure to load card drivers.\n");
-               goto done;
-       }
-
-       /* loop the number of cards and get their info */
-       while(i <= ii)
-       {
-               nt = te = bri = pri = pots = 0;
-               useable = 0;
-
-#ifdef SOCKET_MISDN
-               devinfo.id = i - 1;
-               ret = ioctl(sock, IMGETDEVINFO, &devinfo);
-               if (ret < 0)
-               {
-                       fprintf(stderr, "Cannot get device information for port %d. (ioctl IMGETDEVINFO failed ret=%d)\n", i, ret);
-                       break;
-               }
-
-               /* output the port info */
-               printf("Port %2d name='%s': ", i, devinfo.name);
-               if (devinfo.Dprotocols & (1 << ISDN_P_TE_S0))
-               {
-                       bri = 1;
-                       te = 1;
-               }
-               if (devinfo.Dprotocols & (1 << ISDN_P_NT_S0))
-               {
-                       bri = 1;
-                       nt = 1;
-               }
-               if (devinfo.Dprotocols & (1 << ISDN_P_TE_E1))
-               {
-                       pri = 1;
-                       te = 1;
-               }
-               if (devinfo.Dprotocols & (1 << ISDN_P_NT_E1))
-               {
-                       pri = 1;
-                       nt = 1;
-               }
-#ifdef ISDN_P_FXS
-               if (devinfo.Dprotocols & (1 << ISDN_P_FXS))
-               {
-                       pots = 1;
-                       te = 1;
-               }
-#endif
-#ifdef ISDN_P_FXO
-               if (devinfo.Dprotocols & (1 << ISDN_P_FXO))
-               {
-                       pots = 1;
-                       nt = 1;
-               }
-#endif
-               if ((te || nt) && (bri || pri || pots))
-                       useable = 1;
-
-               if (te && nt && bri)
-                       printf("TE/NT-mode BRI S/T (for phone lines & phones)");
-               if (te && !nt && bri)
-                       printf("TE-mode    BRI S/T (for phone lines)");
-               if (nt && !te && bri)
-                       printf("NT-mode    BRI S/T (for phones)");
-               if (te && nt && pri)
-                       printf("TE/NT-mode PRI E1  (for phone lines & E1 devices)");
-               if (te && !nt && pri)
-                       printf("TE-mode    PRI E1  (for phone lines)");
-               if (nt && !te && pri)
-                       printf("NT-mode    PRI E1  (for E1 devices)");
-               if (te && nt && pots)
-                       printf("FXS/FXO    POTS    (for analog lines & phones)");
-               if (te && !nt && pots)
-                       printf("FXS        POTS    (for analog lines)");
-               if (nt && !te && pots)
-                       printf("FXO        POTS    (for analog phones)");
-               if (pots)
-               {
-                       useable = 0;
-                       printf("\n -> Analog interfaces are not supported.");
-               } else
-               if (!useable)
-               {
-                       printf("unsupported interface protocol bits 0x%016x", devinfo.Dprotocols);
-               }
-               printf("\n");
-
-               printf("  - %d B-channels\n", devinfo.nrbchan);
-#else
-               ret = mISDN_get_stack_info(device, i, buff, sizeof(buff));
-               if (ret <= 0)
-               {
-                       fprintf(stderr, "mISDN_get_stack_info() failed: port=%d error=%d\n", i, ret);
-                       break;
-               }
-               stinf = (stack_info_t *)&frm->data.p;
-
-               /* output the port info */
-               printf("Port %2d: ", i);
-               switch(stinf->pid.protocol[0] & ~ISDN_PID_FEATURE_MASK)
-               {
-                       case ISDN_PID_L0_TE_S0:
-                       useable = 1;
-                       te = 1;
-                       bri = 1;
-                       printf("TE-mode BRI S/T interface line (for phone lines)");
-                       break;
-                       case ISDN_PID_L0_NT_S0:
-                       useable = 1;
-                       nt = 1;
-                       bri = 1;
-                       printf("NT-mode BRI S/T interface port (for phones)");
-                       break;
-                       case ISDN_PID_L0_TE_E1:
-                       useable = 1;
-                       te = 1;
-                       pri = 1;
-                       printf("TE-mode PRI E1  interface line (for phone lines)");
-                       break;
-                       case ISDN_PID_L0_NT_E1:
-                       useable = 1;
-                       nt = 1;
-                       pri = 1;
-                       printf("NT-mode PRI E1  interface port (for E1 devices)");
-                       break;
-                       default:
-                       useable = 0;
-                       printf("unknown type 0x%08x",stinf->pid.protocol[0]);
-               }
-               printf("\n");
-
-               if (nt)
-               {
-                       if (stinf->pid.protocol[1] == 0)
-                       {
-                               useable = 0;
-                               printf(" -> Missing layer 1 NT-mode protocol.\n");
-                       }
-                       p = 2;
-                       while(p <= MAX_LAYER_NR) {
-                               if (stinf->pid.protocol[p])
-                               {
-                                       useable = 0;
-                                       printf(" -> Layer %d protocol 0x%08x is detected, port already in use by another application.\n", p, stinf->pid.protocol[p]);
-                               }
-                               p++;
-                       }
-                       if (useable)
-                       {
-                               if (pri)
-                                       printf(" -> Interface is Point-To-Point (PRI).\n");
-                               else
-                                       printf(" -> Interface can be Poin-To-Point/Multipoint.\n");
-                       }
-               }
-               if (te)
-               {
-                       if (stinf->pid.protocol[1] == 0)
-                       {
-                               useable = 0;
-                               printf(" -> Missing layer 1 protocol.\n");
-                       }
-                       if (stinf->pid.protocol[2] == 0)
-                       {
-                               useable = 0;
-                               printf(" -> Missing layer 2 protocol.\n");
-                       }
-                       if (stinf->pid.protocol[2] & ISDN_PID_L2_DF_PTP)
-                       {
-                               printf(" -> Interface is Poin-To-Point.\n");
-                       }
-                       if (stinf->pid.protocol[3] == 0)
-                       {
-                               useable = 0;
-                               printf(" -> Missing layer 3 protocol.\n");
-                       } else
-                       {
-                               printf(" -> Protocol: ");
-                               switch(stinf->pid.protocol[3] & ~ISDN_PID_FEATURE_MASK)
-                               {
-                                       case ISDN_PID_L3_DSS1USER:
-                                       printf("DSS1 (Euro ISDN)");
-                                       break;
-
-                                       default:
-                                       useable = 0;
-                                       printf("unknown protocol 0x%08x",stinf->pid.protocol[3]);
-                               }
-                               printf("\n");
-                       }
-                       p = 4;
-                       while(p <= MAX_LAYER_NR) {
-                               if (stinf->pid.protocol[p])
-                               {
-                                       useable = 0;
-                                       printf(" -> Layer %d protocol 0x%08x is detected, port already in use by another application.\n", p, stinf->pid.protocol[p]);
-                               }
-                               p++;
-                       }
-               }
-               printf("  - %d B-channels\n", stinf->childcnt);
-#endif
-
-               if (!useable)
-                       printf(" * Port NOT useable for LCR\n");
-
-               printf("--------\n");
-
-               i++;
-       }
-       printf("\n");
-
-done:
-#ifdef SOCKET_MISDN
-       close(sock);
-#else
-       /* close mISDN */
-       if ((ret = mISDN_close(device)))
-               FATAL("mISDN_close() failed: err=%d '%s'\n", ret, strerror(ret));
-#endif
-}
-
-
-/*
- * enque data from upper buffer
+ * enque data from remote port
  */
-void PmISDN::txfromup(unsigned char *data, int length)
+int PmISDN::bridge_rx(unsigned char *data, int length)
 {
-#ifdef SOCKET_MISDN
-       unsigned char buf[MISDN_HEADER_LEN+((length>ISDN_LOAD)?length:ISDN_LOAD)];
+       unsigned char buf[MISDN_HEADER_LEN+((length>p_m_preload)?length:p_m_preload)];
        struct mISDNhead *hh = (struct mISDNhead *)buf;
        int ret;
 
        if (p_m_b_index < 0)
-               return;
+               return -EIO;
        if (p_m_mISDNport->b_state[p_m_b_index] != B_STATE_ACTIVE)
-               return;
-#else
-       unsigned char buf[mISDN_HEADER_LEN+((length>ISDN_LOAD)?length:ISDN_LOAD)];
-       iframe_t *frm = (iframe_t *)buf;
-
-       if (p_m_b_index < 0)
-               return;
-       if (!p_m_mISDNport->b_addr[p_m_b_index])
-               return;
-#endif
+               return -EINVAL;
 
        /* check if high priority tones exist
         * ignore data in this case
         */
-       if (p_tone_name[0] || p_m_crypt_msg_loops)
-               return;
+       if (p_tone_name[0] || p_m_crypt_msg_loops || p_m_inband_send_on)
+               return -EBUSY;
 
        /* preload procedure
         * if transmit buffer in DSP module is empty,
         * preload it to DSP_LOAD to prevent jitter gaps.
+        * 
+        * if load runs empty, preload again.
         */
-       if (p_m_load==0 && ISDN_LOAD>0)
-       {
-#ifdef SOCKET_MISDN
+       if (p_m_disable_dejitter && p_m_load == 0 && p_m_preload > 0) {
+//printf("preload=%d\n", p_m_preload);
                hh->prim = PH_DATA_REQ; 
                hh->id = 0;
-               memset(buf+MISDN_HEADER_LEN, (options.law=='a')?0x2a:0xff, ISDN_LOAD);
-               ret = sendto(p_m_mISDNport->b_socket[p_m_b_index], buf, MISDN_HEADER_LEN+ISDN_LOAD, 0, NULL, 0);
+               memset(buf+MISDN_HEADER_LEN, silence, p_m_preload);
+               ret = sendto(p_m_mISDNport->b_sock[p_m_b_index].fd, buf, MISDN_HEADER_LEN+p_m_preload, 0, NULL, 0);
                if (ret <= 0)
-                       PERROR("Failed to send to socket %d\n", p_m_mISDNport->b_socket[p_m_b_index]);
-#else
-               frm->prim = DL_DATA | REQUEST; 
-               frm->addr = p_m_mISDNport->b_addr[p_m_b_index] | FLG_MSG_DOWN;
-               frm->dinfo = 0;
-               frm->len = ISDN_LOAD;
-               memset(buf+mISDN_HEADER_LEN, (options.law=='a')?0x2a:0xff, ISDN_LOAD);
-               mISDN_write(mISDNdevice, frm, mISDN_HEADER_LEN+ISDN_LOAD, TIMEOUT_1SEC);
-#endif
-               p_m_load += ISDN_LOAD;
+                       PERROR("Failed to send to socket %d\n", p_m_mISDNport->b_sock[p_m_b_index].fd);
+               p_m_load += p_m_preload;
+               schedule_timer(&p_m_loadtimer, 0, PORT_TRANSMIT * 125);
        }
 
        /* drop if load would exceed ISDN_MAXLOAD
         * this keeps the delay not too high
         */
-       if (p_m_load+length > ISDN_MAXLOAD)
-               return;
+//printf("load=%d len=%d 2*preload=%d\n", p_m_load, length, p_m_preload << 1);
+       if (p_m_disable_dejitter && p_m_preload > 0 && p_m_load+length > (p_m_preload << 1))
+               return -EINVAL;
 
        /* make and send frame */
-#ifdef SOCKET_MISDN
        hh->prim = PH_DATA_REQ;
        hh->id = 0;
        memcpy(buf+MISDN_HEADER_LEN, data, length);
-       ret = sendto(p_m_mISDNport->b_socket[p_m_b_index], buf, MISDN_HEADER_LEN+length, 0, NULL, 0);
+       ret = sendto(p_m_mISDNport->b_sock[p_m_b_index].fd, buf, MISDN_HEADER_LEN+length, 0, NULL, 0);
        if (ret <= 0)
-               PERROR("Failed to send to socket %d\n", p_m_mISDNport->b_socket[p_m_b_index]);
-#else
-       frm->prim = DL_DATA | REQUEST; 
-       frm->addr = p_m_mISDNport->b_addr[p_m_b_index] | FLG_MSG_DOWN;
-       frm->dinfo = 0;
-       frm->len = length;
-       memcpy(buf+mISDN_HEADER_LEN, data, length);
-       mISDN_write(mISDNdevice, frm, mISDN_HEADER_LEN+frm->len, TIMEOUT_1SEC);
-#endif
+               PERROR("Failed to send to socket %d\n", p_m_mISDNport->b_sock[p_m_b_index].fd);
        p_m_load += length;
+
+       return 0;
+}
+
+int PmISDN::inband_send(unsigned char *buffer, int len)
+{
+       PERROR("this function must be derived to function!\n");
+       return 0;
 }
 
+void PmISDN::inband_send_on(void)
+{
+       PDEBUG(DEBUG_PORT, "turning inband signalling send on.\n");
+       p_m_inband_send_on = 1;
+}
+
+void PmISDN::inband_send_off(void)
+{
+       PDEBUG(DEBUG_PORT, "turning inband signalling send off.\n");
+       p_m_inband_send_on = 0;
+}
+
+void PmISDN::inband_receive(unsigned char *buffer, int len)
+{
+//
+//     if (len >= SS5_DECODER_NPOINTS)
+//             ss5_decode(buffer, SS5_DECODER_NPOINTS);
+       PERROR("this function must be derived to function!\n");
+}
+
+void PmISDN::inband_receive_on(void)
+{
+       /* this must work during constructor, see ss5.cpp */
+       PDEBUG(DEBUG_PORT, "turning inband signalling receive on.\n");
+       p_m_inband_receive_on = 1;
+       update_rxoff();
+}
+
+void PmISDN::inband_receive_off(void)
+{
+       PDEBUG(DEBUG_PORT, "turning inband signalling receive off.\n");
+       p_m_inband_receive_on = 0;
+       update_rxoff();
+}
+
+void PmISDN::mute_on(void)
+{
+       if (p_m_mute)
+               return;
+       PDEBUG(DEBUG_PORT, "turning mute on.\n");
+       p_m_mute = 1;
+       set_conf(p_m_conf, 0);
+}
+
+void PmISDN::mute_off(void)
+{
+       if (!p_m_mute)
+               return;
+       PDEBUG(DEBUG_PORT, "turning mute off.\n");
+       p_m_mute = 0;
+       set_conf(0, p_m_conf);
+}
+
+