fixed trace bug
[lcr.git] / mISDN.cpp
index 5129519..df550ae 100644 (file)
--- a/mISDN.cpp
+++ b/mISDN.cpp
@@ -5,37 +5,32 @@
 **---------------------------------------------------------------------------**
 ** Copyright: Andreas Eversberg                                              **
 **                                                                           **
-** mISDN port abstraction for dss1 and sip                                   **
+** mISDN port abstraction for dss1                                           **
 **                                                                           **
 \*****************************************************************************/ 
 
-
 #include "main.h"
-#include <poll.h>
-#include <errno.h>
-#include <sys/ioctl.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#ifdef SOCKET_MISDN
-#include <netinet/udp.h>
-#include <netinet/in.h>
-#include <netdb.h>
-#include <sys/socket.h>
-#include <pthread.h>
-#include <linux/mISDNif.h>
-#include <q931.h>
-#include <mlayer3.h>
-#else
+#include "myisdn.h"
+
 extern "C" {
-#include <mISDNuser/net_l2.h>
 }
-#endif
+#include <q931.h>
 
-#ifndef ISDN_PID_L4_B_USER
-#define ISDN_PID_L4_B_USER 0x440000ff
+#undef offsetof
+#ifdef __compiler_offsetof
+#define offsetof(TYPE,MEMBER) __compiler_offsetof(TYPE,MEMBER)
+#else
+#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
 #endif
 
+#define container_of(ptr, type, member) ({                     \
+       const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
+       (type *)( (char *)__mptr - offsetof(type,member) );})
+
+// timeouts if activating/deactivating response from mISDN got lost
+#define B_TIMER_ACTIVATING 1 // seconds
+#define B_TIMER_DEACTIVATING 1 // seconds
+
 /* list of mISDN ports */
 struct mISDNport *mISDNport_first;
 
@@ -43,117 +38,55 @@ struct mISDNport *mISDNport_first;
 unsigned char mISDN_rand[256];
 int mISDN_rand_count = 0;
 
-#ifdef MISDN_SOCKET
+unsigned int mt_assign_pid = ~0;
+
 int mISDNsocket = -1;
 
 int mISDN_initialize(void)
 {
+       char filename[256];
+
        /* 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));
+               fprintf(stderr, "Cannot open mISDN due to '%s'. (Does your Kernel support socket based mISDN?)\n", strerror(errno));
                return(-1);
        }
 
-       /* 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)
-               mISDN_debug_init(global_debug, debug_log, debug_log, debug_log);
-       else
-               mISDN_debug_init(global_debug, NULL, NULL, NULL);
-
        /* init mlayer3 */
        init_layer3(4); // buffer of 4
 
-       return(0);
-}
-
-void mISDN_deinitialize(void)
-{
-       cleanup_layer3();
-
-       mISDN_debug_close();
-
-       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;
+       /* open debug, if enabled and not only stack debugging */
+       if (options.deb)
+       {
+               SPRINT(filename, "%s/debug.log", INSTALL_DATA);
+               debug_fp = fopen(filename, "a");
+       }
 
-       /* initialize stuff of the NT lib */
        if (options.deb & DEBUG_STACK)
        {
-               global_debug = 0xffffffff & ~DBGM_MSG;
-//             global_debug = DBGM_L3DATA;
+               SPRINT(filename, "%s/debug_mISDN.log", INSTALL_DATA);
+               mISDN_debug_init(0xffffffff, filename, filename, filename);
        } 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");
+               mISDN_debug_init(0, NULL, NULL, NULL);
 
-               /* 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);
-       }
        return(0);
 }
 
 void mISDN_deinitialize(void)
 {
-       unsigned char buff[1025];
+       cleanup_layer3();
 
-       debug_close();
+       mISDN_debug_close();
 
-       if (mISDNdevice >= 0)
-       {
-               /* 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");
-       }
+       if (debug_fp)
+               fclose(debug_fp);
+       debug_fp = NULL;
+
+       if (mISDNsocket > -1)
+               close(mISDNsocket);
 }
-#endif
 
 /*
  * constructor
@@ -168,7 +101,8 @@ PmISDN::PmISDN(int type, mISDNport *mISDNport, char *portname, struct port_setti
        p_m_b_reserve = 0;
        p_m_delete = 0;
        p_m_hold = 0;
-       p_m_txvol = p_m_rxvol = 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_txdata = 0;
        p_m_delay = 0;
@@ -180,8 +114,9 @@ PmISDN::PmISDN(int type, mISDNport *mISDNport, char *portname, struct port_setti
        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 */
-
+       p_m_remote_id = 0; /* remote admin socket */
+       SCPY(p_m_pipeline, mISDNport->ifport->interface->pipeline);
+       
        /* audio */
        p_m_load = 0;
        p_m_last_tv_sec = 0;
@@ -194,13 +129,18 @@ PmISDN::PmISDN(int type, mISDNport *mISDNport, char *portname, struct port_setti
        p_m_crypt_msg_len = 0;
        p_m_crypt_msg[0] = '\0';
        p_m_crypt_msg_current = 0;
-       p_m_crypt_key[0] = '\0';
        p_m_crypt_key_len = 0;
        p_m_crypt_listen = 0;
        p_m_crypt_listen_state = 0;
        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)
+       {
+               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)
@@ -225,7 +165,7 @@ PmISDN::PmISDN(int type, mISDNport *mISDNport, char *portname, struct port_setti
  */
 PmISDN::~PmISDN()
 {
-       struct message *message;
+       struct lcr_msg *message;
 
        /* remove bchannel relation */
        drop_bchannel();
@@ -256,7 +196,7 @@ void chan_trace_header(struct mISDNport *mISDNport, class PmISDN *port, char *ms
        /* init trace with given values */
        start_trace(mISDNport?mISDNport->portnum:0,
                    (mISDNport)?((mISDNport->ifport)?mISDNport->ifport->interface:NULL):NULL,
-                   port?numberrize_callerinfo(port->p_callerinfo.id, port->p_callerinfo.ntype):NULL,
+                   port?numberrize_callerinfo(port->p_callerinfo.id, port->p_callerinfo.ntype, options.national, options.international):NULL,
                    port?port->p_dialinginfo.id:NULL,
                    direction,
                    CATEGORY_CH,
@@ -270,44 +210,43 @@ void chan_trace_header(struct mISDNport *mISDNport, class PmISDN *port, char *ms
  */
 static struct isdn_message {
        char *name;
-       unsigned long value;
+       unsigned int value;
 } isdn_message[] = {
-       {"TIMEOUT", CC_TIMEOUT},
-       {"SETUP", CC_SETUP},
-       {"SETUP_ACK", CC_SETUP_ACKNOWLEDGE},
-       {"PROCEEDING", CC_PROCEEDING},
-       {"ALERTING", CC_ALERTING},
-       {"CONNECT", CC_CONNECT},
-       {"CONNECT RES", CC_CONNECT},
-       {"CONNECT_ACK", CC_CONNECT_ACKNOWLEDGE},
-       {"DISCONNECT", CC_DISCONNECT},
-       {"RELEASE", CC_RELEASE},
-       {"RELEASE_COMP", CC_RELEASE_COMPLETE},
-       {"INFORMATION", CC_INFORMATION},
-       {"PROGRESS", CC_PROGRESS},
-       {"NOTIFY", CC_NOTIFY},
-       {"SUSPEND", CC_SUSPEND},
-       {"SUSPEND_ACK", CC_SUSPEND_ACKNOWLEDGE},
-       {"SUSPEND_REJ", CC_SUSPEND_REJECT},
-       {"RESUME", CC_RESUME},
-       {"RESUME_ACK", CC_RESUME_ACKNOWLEDGE},
-       {"RESUME_REJ", CC_RESUME_REJECT},
-       {"HOLD", CC_HOLD},
-       {"HOLD_ACK", CC_HOLD_ACKNOWLEDGE},
-       {"HOLD_REJ", CC_HOLD_REJECT},
-       {"RETRIEVE", CC_RETRIEVE},
-       {"RETRIEVE_ACK", CC_RETRIEVE_ACKNOWLEDGE},
-       {"RETRIEVE_REJ", CC_RETRIEVE_REJECT},
-       {"FACILITY", CC_FACILITY},
-       {"STATUS", CC_STATUS},
-       {"RESTART", CC_RESTART},
-       {"RELEASE_CR", CC_RELEASE_CR},
-       {"NEW_CR", CC_NEW_CR},
-       {"DL_ESTABLISH", DL_ESTABLISH},
-       {"DL_RELEASE", DL_RELEASE},
-       {"PH_ACTIVATE", PH_ACTIVATE},
-       {"PH_DEACTIVATE", PH_DEACTIVATE},
-
+       {"PH_ACTIVATE", L1_ACTIVATE_REQ},
+       {"PH_DEACTIVATE", L1_DEACTIVATE_REQ},
+       {"DL_ESTABLISH", L2_ESTABLISH_REQ},
+       {"DL_RELEASE", L2_RELEASE_REQ},
+       {"UNKNOWN", L3_UNKNOWN},
+       {"MT_TIMEOUT", L3_TIMEOUT_REQ},
+       {"MT_SETUP", L3_SETUP_REQ},
+       {"MT_SETUP_ACK", L3_SETUP_ACKNOWLEDGE_REQ},
+       {"MT_PROCEEDING", L3_PROCEEDING_REQ},
+       {"MT_ALERTING", L3_ALERTING_REQ},
+       {"MT_CONNECT", L3_CONNECT_REQ},
+       {"MT_CONNECT_ACK", L3_CONNECT_ACKNOWLEDGE_REQ},
+       {"MT_DISCONNECT", L3_DISCONNECT_REQ},
+       {"MT_RELEASE", L3_RELEASE_REQ},
+       {"MT_RELEASE_COMP", L3_RELEASE_COMPLETE_REQ},
+       {"MT_INFORMATION", L3_INFORMATION_REQ},
+       {"MT_PROGRESS", L3_PROGRESS_REQ},
+       {"MT_NOTIFY", L3_NOTIFY_REQ},
+       {"MT_SUSPEND", L3_SUSPEND_REQ},
+       {"MT_SUSPEND_ACK", L3_SUSPEND_ACKNOWLEDGE_REQ},
+       {"MT_SUSPEND_REJ", L3_SUSPEND_REJECT_REQ},
+       {"MT_RESUME", L3_RESUME_REQ},
+       {"MT_RESUME_ACK", L3_RESUME_ACKNOWLEDGE_REQ},
+       {"MT_RESUME_REJ", L3_RESUME_REJECT_REQ},
+       {"MT_HOLD", L3_HOLD_REQ},
+       {"MT_HOLD_ACK", L3_HOLD_ACKNOWLEDGE_REQ},
+       {"MT_HOLD_REJ", L3_HOLD_REJECT_REQ},
+       {"MT_RETRIEVE", L3_RETRIEVE_REQ},
+       {"MT_RETRIEVE_ACK", L3_RETRIEVE_ACKNOWLEDGE_REQ},
+       {"MT_RETRIEVE_REJ", L3_RETRIEVE_REJECT_REQ},
+       {"MT_FACILITY", L3_FACILITY_REQ},
+       {"MT_STATUS", L3_STATUS_REQ},
+       {"MT_RESTART", L3_RESTART_REQ},
+       {"MT_NEW_L3ID", L3_NEW_L3ID_REQ},
+       {"MT_RELEASE_L3ID", L3_RELEASE_L3ID_REQ},
        {NULL, 0},
 };
 static char *isdn_prim[4] = {
@@ -316,7 +255,7 @@ static char *isdn_prim[4] = {
        " INDICATION",
        " RESPONSE",
 };
-void l1l2l3_trace_header(struct mISDNport *mISDNport, class PmISDN *port, unsigned long prim, int direction)
+void l1l2l3_trace_header(struct mISDNport *mISDNport, class PmISDN *port, unsigned int msg, int direction)
 {
        int i;
        char msgtext[64] = "<<UNKNOWN MESSAGE>>";
@@ -325,17 +264,17 @@ void l1l2l3_trace_header(struct mISDNport *mISDNport, class PmISDN *port, unsign
        i = 0;
        while(isdn_message[i].name)
        {
-               if (isdn_message[i].value == (prim&0xffffff00))
+               if (isdn_message[i].value == (msg&0xffffff00))
                {
                        SCPY(msgtext, isdn_message[i].name);
                        break;
                }
                i++;
        }
-       SCAT(msgtext, isdn_prim[prim&0x00000003]);
+       SCAT(msgtext, isdn_prim[msg&0x00000003]);
 
        /* add direction */
-       if (direction && (prim&0xffffff00)!=CC_NEW_CR && (prim&0xffffff00)!=CC_RELEASE_CR)
+       if (direction && (msg&0xffffff00)!=L3_NEW_L3ID_REQ && (msg&0xffffff00)!=L3_RELEASE_L3ID_REQ)
        {
                if (mISDNport)
                {
@@ -357,8 +296,8 @@ void l1l2l3_trace_header(struct mISDNport *mISDNport, class PmISDN *port, unsign
 
        /* init trace with given values */
        start_trace(mISDNport?mISDNport->portnum:0,
-                   mISDNport?mISDNport->ifport->interface:NULL,
-                   port?numberrize_callerinfo(port->p_callerinfo.id, port->p_callerinfo.ntype):NULL,
+                   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,
                    direction,
                    CATEGORY_CH,
@@ -370,70 +309,48 @@ void l1l2l3_trace_header(struct mISDNport *mISDNport, class PmISDN *port, unsign
 /*
  * send control information to the channel (dsp-module)
  */
-void ph_control(struct mISDNport *mISDNport, class PmISDN *isdnport, unsigned long handle, 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, char *trace_name, int trace_value)
 {
-#ifdef SOCKET_MISDN
        unsigned char buffer[MISDN_HEADER_LEN+sizeof(int)+sizeof(int)];
        struct mISDNhead *ctrl = (struct mISDNhead *)buffer;
-       unsigned long *d = buffer+MISDN_HEADER_LEN;
+       unsigned int *d = (unsigned int *)(buffer+MISDN_HEADER_LEN);
        int ret;
 
+       if (sock < 0)
+               return;
+
        ctrl->prim = PH_CONTROL_REQ;
        ctrl->id = 0;
        *d++ = c1;
        *d++ = c2;
-       ret = sendto(handle, buffer, MISDN_HEADER_LEN+sizeof(int)*2, 0, NULL, 0);
-       if (!ret)
-               PERROR("Failed to send to socket %d\n", handle);
-#else
-       unsigned char buffer[mISDN_HEADER_LEN+sizeof(int)+sizeof(int)];
-       iframe_t *ctrl = (iframe_t *)buffer; 
-       unsigned long *d = (unsigned long *)&ctrl->data.p;
-
-       ctrl->prim = PH_CONTROL | REQUEST;
-       ctrl->addr = handle | 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
+       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);
        chan_trace_header(mISDNport, isdnport, "BCHANNEL control", DIRECTION_OUT);
-       if (c1 == CMX_CONF_JOIN)
+       if (c1 == DSP_CONF_JOIN)
                add_trace(trace_name, NULL, "0x%08x", trace_value);
        else
                add_trace(trace_name, NULL, "%d", trace_value);
        end_trace();
 }
 
-void ph_control_block(struct mISDNport *mISDNport, class PmISDN *isdnport, unsigned long handle, 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, char *trace_name, int trace_value)
 {
-#ifdef SOCKET_MISDN
        unsigned char buffer[MISDN_HEADER_LEN+sizeof(int)+c2_len];
        struct mISDNhead *ctrl = (struct mISDNhead *)buffer;
-       unsigned long *d = buffer+MISDN_HEADER_LEN;
+       unsigned int *d = (unsigned int *)(buffer+MISDN_HEADER_LEN);
        int ret;
 
+       if (sock < 0)
+               return;
+
        ctrl->prim = PH_CONTROL_REQ;
        ctrl->id = 0;
        *d++ = c1;
        memcpy(d, c2, c2_len);
-       ret = sendto(handle, buffer, MISDN_HEADER_LEN+sizeof(int)+c2_len, 0, NULL, 0);
-       if (!ret)
-               PERROR("Failed to send to socket %d\n", handle);
-#else
-       unsigned char buffer[mISDN_HEADER_LEN+sizeof(int)+c2_len];
-       iframe_t *ctrl = (iframe_t *)buffer;
-       unsigned long *d = (unsigned long *)&ctrl->data.p;
-
-       ctrl->prim = PH_CONTROL | REQUEST;
-       ctrl->addr = handle | 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
+       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);
        chan_trace_header(mISDNport, isdnport, "BCHANNEL control", DIRECTION_OUT);
        add_trace(trace_name, NULL, "%d", trace_value);
        end_trace();
@@ -446,21 +363,21 @@ void ph_control_block(struct mISDNport *mISDNport, class PmISDN *isdnport, unsig
  */
 static int _bchannel_create(struct mISDNport *mISDNport, int i)
 {
-       unsigned char buff[1024];
        int ret;
-#ifdef SOCKET_MISDN
-       unsigned long on = 1;
-       struct sockadd_mISDN addr;
+       unsigned int on = 1;
+       struct sockaddr_mISDN addr;
 
-       if (mISDNport->b_socket[i])
+       if (mISDNport->b_socket[i] > -1)
        {
                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])
+       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);
@@ -478,9 +395,9 @@ static int _bchannel_create(struct mISDNport *mISDNport, int i)
 
        /* bind socket to bchannel */
        addr.family = AF_ISDN;
-       addr.dev = mISDNport->port-1;
+       addr.dev = mISDNport->portnum-1;
        addr.channel = i+1+(i>=15);
-       ret = bind(di->bchan, (struct sockaddr *)&addr, sizeof(addr));
+       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);
@@ -493,79 +410,8 @@ static int _bchannel_create(struct mISDNport *mISDNport, int i)
        add_trace("channel", NULL, "%d", i+1+(i>=15));
        add_trace("socket", NULL, "%d", mISDNport->b_socket[i]);
        end_trace();
-#else
-       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]);
-       end_trace();
-#endif
 
        return(1);
-
-failed:
-       mISDNport->b_addr[i] = 0;
-       return(0);
 }
 
 
@@ -575,29 +421,22 @@ failed:
  */
 static void _bchannel_activate(struct mISDNport *mISDNport, int i, int activate)
 {
-#ifdef SOCKET_MISDN
        struct mISDNhead act;
        int ret;
 
-       act.prim = (activate)?DL_ESTABLISH_REQ:DL_RELEASE_REQ; 
+       if (mISDNport->b_socket[i] < 0)
+               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);
-       if (!ret)
+       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
 
        /* trace */
        chan_trace_header(mISDNport, mISDNport->b_port[i], activate?(char*)"BCHANNEL activate":(char*)"BCHANNEL deactivate", DIRECTION_OUT);
        add_trace("channel", NULL, "%d", i+1+(i>=15));
+       if (mISDNport->b_timer[i])
+               add_trace("event", NULL, "timeout recovery");
        end_trace();
 }
 
@@ -609,15 +448,11 @@ 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;
 
+       if (mISDNport->b_socket[i] < 0)
+               return;
        handle = mISDNport->b_socket[i];
-#else
-       unsigned long handle;
-
-       handle = mISDNport->b_addr[i];
-#endif
        port = mISDNport->b_port[i];
        if (!port)
        {
@@ -627,27 +462,29 @@ 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)?CMX_TXDATA_ON:CMX_TXDATA_OFF, 0, "DSP-TXDATA", 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)
-               ph_control(mISDNport, port, handle, CMX_DELAY, port->p_m_delay, "DSP-DELAY", port->p_m_delay);
-       if (port->p_m_txvol)
-               ph_control(mISDNport, port, handle, VOL_CHANGE_TX, port->p_m_txvol, "DSP-TXVOL", port->p_m_txvol);
-       if (port->p_m_rxvol)
-               ph_control(mISDNport, port, handle, VOL_CHANGE_RX, port->p_m_rxvol, "DSP-RXVOL", port->p_m_rxvol);
+               ph_control(mISDNport, port, handle, DSP_DELAY, port->p_m_delay, "DSP-DELAY", port->p_m_delay);
+       if (port->p_m_tx_gain)
+               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)
+               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])
+               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)
-               ph_control(mISDNport, port, handle, CMX_CONF_JOIN, port->p_m_conf, "DSP-CONF", port->p_m_conf);
+               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, CMX_ECHO_ON, 0, "DSP-ECHO", 1);
+               ph_control(mISDNport, port, handle, DSP_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);
+               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, CMX_RECEIVE_OFF, 0, "DSP-RXOFF", 1);
+               ph_control(mISDNport, port, handle, DSP_RECEIVE_OFF, 0, "DSP-RXOFF", 1);
 //     if (port->p_m_txmix)
-//             ph_control(mISDNport, port, handle, CMX_MIX_ON, 0, "DSP-MIX", 1);
+//             ph_control(mISDNport, port, handle, DSP_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);
+               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);
 }
 
 /*
@@ -656,33 +493,14 @@ static void _bchannel_configure(struct mISDNport *mISDNport, int i)
  */
 static void _bchannel_destroy(struct mISDNport *mISDNport, int i)
 {
-#ifdef SOCKET_MISDN
+       if (mISDNport->b_socket[i] < 0)
+               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();
-       if (mISDNport->b_socket[i] > -1)
-       {
-               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]);
-       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_socket[i]);
+       mISDNport->b_socket[i] = -1;
 }
 
 
@@ -732,7 +550,6 @@ 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.
@@ -749,6 +566,12 @@ The bchannel is now used by remote application.
 - B_EVENT_IMPORTED
 The bchannel is not used by remote application.
 
+- B_EVENT_EXPORTREQUEST
+The bchannel shall be exported to the remote application.
+
+- B_EVENT_IMPORTREQUEST
+The bchannel is released from the 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.
@@ -777,18 +600,27 @@ void bchannel_event(struct mISDNport *mISDNport, int i, int event)
 {
        class PmISDN *b_port = mISDNport->b_port[i];
        int state = mISDNport->b_state[i];
-       unsigned long p_m_remote_ref = 0;
-       unsigned long p_m_remote_id = 0;
-#ifdef SOCKET_MISDN
-       unsigned long portid = (mISDNport->portnum<<8) + i+1+(i>=15);
-#else
-       unsigned long portid = mISDNport->b_addr[i];
-#endif
+       double timer = mISDNport->b_timer[i];
+       unsigned int p_m_remote_ref = 0;
+       unsigned int p_m_remote_id = 0;
+       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;
+       unsigned int portid = (mISDNport->portnum<<8) + i+1+(i>=15);
 
        if (b_port)
        {
                p_m_remote_id = b_port->p_m_remote_id;
                p_m_remote_ref = b_port->p_m_remote_ref;
+               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;
+               p_m_crypt_key = b_port->p_m_crypt_key;
+               p_m_crypt_key_len = b_port->p_m_crypt_key_len;
+               p_m_crypt_key_type = /*b_port->p_m_crypt_key_type*/1;
        }
 
        switch(event)
@@ -803,14 +635,10 @@ void bchannel_event(struct mISDNport *mISDNport, int i, int event)
                        if (p_m_remote_ref)
                        {
                                /* export bchannel */
-                               message_bchannel_to_join(p_m_remote_id, p_m_remote_ref, BCHANNEL_ASSIGN, portid);
+                               message_bchannel_to_remote(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;
@@ -822,6 +650,7 @@ void bchannel_event(struct mISDNport *mISDNport, int i, int event)
                                {
                                        _bchannel_activate(mISDNport, i, 1);
                                        state = B_STATE_ACTIVATING;
+                                       timer = now_d + B_TIMER_ACTIVATING;
                                }
                        }
                        break;
@@ -858,14 +687,10 @@ void bchannel_event(struct mISDNport *mISDNport, int i, int event)
                        /* 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);
+                       message_bchannel_to_remote(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;
@@ -886,6 +711,7 @@ void bchannel_event(struct mISDNport *mISDNport, int i, int event)
                        /* bchannel is active, so we deactivate */
                        _bchannel_activate(mISDNport, i, 0);
                        state = B_STATE_DEACTIVATING;
+                       timer = now_d + B_TIMER_DEACTIVATING;
                        break;
 
                        default:
@@ -897,7 +723,47 @@ void bchannel_event(struct mISDNport *mISDNport, int i, int event)
                }
                break;
 
+               case B_EVENT_IMPORTREQUEST:
+               /* special case where the bchannel is released by remote */
+               if (p_m_remote_ref)
+               {
+                       PERROR("import request with remote channel set, please correct.\n");
+                       break;
+               }
+               switch(state)
+               {
+                       case B_STATE_IDLE:
+                       case B_STATE_ACTIVE:
+                       /* bchannel is not exported */
+                       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_REMOTE:
+                       /* bchannel is exported, so we re-import */
+                       message_bchannel_to_remote(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");
+                       add_trace("channel", NULL, "%d.%d", portid>>8, portid&0xff);
+                       end_trace();
+                       state = B_STATE_IMPORTING;
+                       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;
+
+                       default:
+                       PERROR("Illegal event %d at state %d, please correct.\n", event, state);
+               }
+               break;
+
                case B_EVENT_ACTIVATED:
+               timer = 0;
                switch(state)
                {
                        case B_STATE_ACTIVATING:
@@ -911,6 +777,7 @@ void bchannel_event(struct mISDNport *mISDNport, int i, int event)
                                /* bchannel is active, but exported OR not used anymore (or has wrong stack config), so we deactivate */
                                _bchannel_activate(mISDNport, i, 0);
                                state = B_STATE_DEACTIVATING;
+                               timer = now_d + B_TIMER_DEACTIVATING;
                        }
                        break;
 
@@ -933,14 +800,10 @@ void bchannel_event(struct mISDNport *mISDNport, int i, int event)
                                 * 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);
+                               message_bchannel_to_remote(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;
                        }
@@ -969,18 +832,15 @@ void bchannel_event(struct mISDNport *mISDNport, int i, int event)
                        /* bchannel is active, so we deactivate */
                        _bchannel_activate(mISDNport, i, 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);
+                       message_bchannel_to_remote(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;
                        break;
@@ -996,6 +856,7 @@ void bchannel_event(struct mISDNport *mISDNport, int i, int event)
                break;
 
                case B_EVENT_DEACTIVATED:
+               timer = 0;
                switch(state)
                {
                        case B_STATE_IDLE:
@@ -1010,14 +871,10 @@ void bchannel_event(struct mISDNport *mISDNport, int i, int event)
                                /* 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);
+                                       message_bchannel_to_remote(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;
@@ -1028,6 +885,7 @@ void bchannel_event(struct mISDNport *mISDNport, int i, int event)
                                        {
                                                _bchannel_activate(mISDNport, i, 1);
                                                state = B_STATE_ACTIVATING;
+                                               timer = now_d + B_TIMER_ACTIVATING;
                                        }
                                }
                        }
@@ -1050,14 +908,10 @@ void bchannel_event(struct mISDNport *mISDNport, int i, int event)
                                /* 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);
+                                       message_bchannel_to_remote(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;
@@ -1068,6 +922,7 @@ void bchannel_event(struct mISDNport *mISDNport, int i, int event)
                                        {
                                                _bchannel_activate(mISDNport, i, 1);
                                                state = B_STATE_ACTIVATING;
+                                               timer = now_d + B_TIMER_ACTIVATING;
                                        }
                                }
                        }
@@ -1079,11 +934,35 @@ void bchannel_event(struct mISDNport *mISDNport, int i, int event)
                }
                break;
 
+               case B_EVENT_TIMEOUT:
+               timer = 0;
+               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;
+                       break;
+
+                       case B_STATE_DEACTIVATING:
+                       _bchannel_activate(mISDNport, i, 0);
+                       timer = now_d + B_TIMER_DEACTIVATING;
+                       break;
+
+                       default:
+                       PERROR("Illegal event %d at state %d, please correct.\n", event, state);
+               }
+               break;
+
                default:
                PERROR("Illegal event %d, please correct.\n", event);
        }
 
        mISDNport->b_state[i] = state;
+       mISDNport->b_timer[i] = timer;
 }
 
 
@@ -1195,7 +1074,7 @@ void PmISDN::drop_bchannel(void)
 }
 
 /* process bchannel export/import message from join */
-void message_bchannel_from_join(class JoinRemote *joinremote, int type, unsigned long handle)
+void message_bchannel_from_remote(class JoinRemote *joinremote, int type, unsigned int handle)
 {
        class Endpoint *epoint;
        class Port *port;
@@ -1226,7 +1105,7 @@ void message_bchannel_from_join(class JoinRemote *joinremote, int type, unsigned
                        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))
+               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);
                }
@@ -1242,15 +1121,16 @@ void message_bchannel_from_join(class JoinRemote *joinremote, int type, unsigned
                i = isdnport->p_m_b_index;
                chan_trace_header(mISDNport, isdnport, "MESSAGE_BCHANNEL (from remote application)", DIRECTION_NONE);
                add_trace("type", NULL, "export request");
+               end_trace();
                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_RELEASE:
                case BCHANNEL_ASSIGN_ACK:
                case BCHANNEL_REMOVE_ACK:
                /* find mISDNport for stack ID */
@@ -1261,11 +1141,7 @@ void message_bchannel_from_join(class JoinRemote *joinremote, int type, unsigned
                        ii = mISDNport->b_num;
                        while(i < ii)
                        {
-#ifdef SOCKET_MISDN
-                               if (mISDNport->b_socket[i] == handle)
-#else
-                               if ((unsigned long)(mISDNport->portnum<<8)+i+1+(i>=15) == handle)
-#endif
+                               if ((unsigned int)(mISDNport->portnum<<8)+i+1+(i>=15) == handle)
                                        break;
                                i++;
                        }
@@ -1275,17 +1151,31 @@ void message_bchannel_from_join(class JoinRemote *joinremote, int type, unsigned
                }
                if (!mISDNport)
                {
-                       PERROR("received assign/remove ack for handle=%x, but handle does not exist in any mISDNport structure.\n", handle);
+                       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)
+               if (type!=BCHANNEL_RELEASE)
+               {
+                       /* ack */
+                       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");
+                       end_trace();
                        bchannel_event(mISDNport, i, (type==BCHANNEL_ASSIGN_ACK)?B_EVENT_EXPORTED:B_EVENT_IMPORTED);
-               end_trace();
+               } else
+               {
+                       /* release */
+                       isdnport = mISDNport->b_port[i];
+                       chan_trace_header(mISDNport, isdnport, "MESSAGE_BCHANNEL (from remote application)", DIRECTION_NONE);
+                       add_trace("type", NULL, "import request");
+                       end_trace();
+                       if (isdnport)
+                       {
+                               isdnport->p_m_remote_ref = 0;
+                               isdnport->p_m_remote_id = 0;
+                       }
+                       bchannel_event(mISDNport, i, B_EVENT_IMPORTREQUEST);
+               }
                break;
                default:
                PERROR("received wrong bchannel message type %d from remote\n", type);
@@ -1350,7 +1240,7 @@ on empty load, remote-audio causes the load with the remote audio to be increase
  */
 int PmISDN::handler(void)
 {
-       struct message *message;
+       struct lcr_msg *message;
        int elapsed = 0;
        int ret;
 
@@ -1382,18 +1272,14 @@ int PmISDN::handler(void)
                        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)
+               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
                        unsigned char buf[MISDN_HEADER_LEN+tosend];
                        struct mISDNhead *frm = (struct mISDNhead *)buf;
-                       unsigned long *d = 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
+                       unsigned char *p = buf+MISDN_HEADER_LEN;
 
                        /* copy crypto loops */
                        while (p_m_crypt_msg_loops && tosend)
@@ -1415,6 +1301,7 @@ int PmISDN::handler(void)
                                        /* next loop */
                                        p_m_crypt_msg_current = 0;
                                        p_m_crypt_msg_loops--;
+//                                     puts("eine loop weniger");
                                }
 
                                /* new length */
@@ -1428,21 +1315,15 @@ int PmISDN::handler(void)
                        }
 
                        /* send data */
-#ifdef SOCKET_MISDN
-                       frm->prim = DL_DATA_REQ;
-                       frm->id = 0;
-                       ret = sendto(handle, buffer, MISDN_HEADER_LEN+ISDN_LOAD-p_m_load-tosend, 0, NULL, 0);
-                       if (!ret)
-                               PERROR("Failed to send to socket %d\n", handle);
-#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;
-#endif
-                       if (frm->len)
-                               mISDN_write(mISDNdevice, frm, mISDN_HEADER_LEN+frm->len, TIMEOUT_1SEC);
-                       p_m_load += frm->len;
+                       if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE && ISDN_LOAD-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);
+                               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);
+                       }
+                       p_m_load += ISDN_LOAD - p_m_load - tosend;
                }
        }
 
@@ -1470,28 +1351,16 @@ int PmISDN::handler(void)
 /*
  * whenever we get audio data from bchannel, we process it here
  */
-#ifdef SOCKET_MISDN
-void PmISDN::bchannel_receive(mISDNhead *hh, unsigned char *data, int len)
-{
-       unsigned long cont = *((unsigned long *)data);
-#else
-void PmISDN::bchannel_receive(iframe_t *frm)
+void PmISDN::bchannel_receive(struct mISDNhead *hh, unsigned char *data, int len)
 {
-       int len = frm->len;
-       unsigned long cont = *((unsigned long *)&frm->data.p);
-       unsigned char *data =(unsigned char *)&frm->data.p;
-#endif
+       unsigned int cont = *((unsigned int *)data);
        unsigned char *data_temp;
-       unsigned long length_temp;
-       struct message *message;
+       unsigned int length_temp;
+       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)
                {
@@ -1511,7 +1380,7 @@ void PmISDN::bchannel_receive(iframe_t *frm)
                }
                switch(cont)
                {
-                       case BF_REJECT:
+                       case DSP_BF_REJECT:
                        chan_trace_header(p_m_mISDNport, this, "BCHANNEL control", DIRECTION_IN);
                        add_trace("DSP-CRYPT", NULL, "error");
                        end_trace();
@@ -1521,7 +1390,7 @@ void PmISDN::bchannel_receive(iframe_t *frm)
                        message_put(message);
                        break;
 
-                       case BF_ACCEPT:
+                       case DSP_BF_ACCEPT:
                        chan_trace_header(p_m_mISDNport, this, "BCHANNEL control", DIRECTION_IN);
                        add_trace("DSP-CRYPT", NULL, "ok");
                        end_trace();
@@ -1538,58 +1407,57 @@ void PmISDN::bchannel_receive(iframe_t *frm)
                }
                return;
        }
-#ifdef SOCKET_MISDN
-       if (hh->prim == PH_SIGNAL_IND)
-#else
-       if (frm->prim == (PH_SIGNAL | INDICATION))
-#endif
+       if (hh->prim == PH_CONTROL_IND)
        {
-               switch(frm->dinfo)
+               switch(hh->id)
                {
-                       case CMX_TX_DATA:
-                       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;
-
                        default:
-                       chan_trace_header(p_m_mISDNport, this, "BCHANNEL signal", DIRECTION_IN);
-                       add_trace("unknown", NULL, "0x%x", frm->dinfo);
+                       chan_trace_header(p_m_mISDNport, this, "BCHANNEL control", DIRECTION_IN);
+                       add_trace("unknown", NULL, "0x%x", hh->id);
                        end_trace();
                }
                return;
        }
-#ifdef SOCKET_MISDN
+       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
+               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;
        }
+
        /* 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)
        {
@@ -1646,11 +1514,7 @@ void PmISDN::set_echotest(int 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?CMX_ECHO_ON:CMX_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_socket[p_m_b_index], p_m_echo?DSP_ECHO_ON:DSP_ECHO_OFF, 0, "DSP-ECHO", p_m_echo);
        }
 }
 
@@ -1675,15 +1539,11 @@ void PmISDN::set_tone(char *dir, char *tone)
        {
                nodsp:
                if (p_m_tone)
-               if (p_m_b_index >= 0)
+               if (p_m_b_index > -1)
                if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
                {
                        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], 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_socket[p_m_b_index], DSP_TONE_PATT_OFF, 0, "DSP-TONE", 0);
                }
                p_m_tone = 0;
                Port::set_tone(dir, tone);
@@ -1763,13 +1623,9 @@ void PmISDN::set_tone(char *dir, char *tone)
                /* 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 >= 0)
+               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?TONE_PATT_ON: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
+                       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);
        }
        /* turn user-space tones off in cases of no tone OR dsp tone */
        Port::set_tone("",NULL);
@@ -1777,38 +1633,30 @@ void PmISDN::set_tone(char *dir, char *tone)
 
 
 /* MESSAGE_mISDNSIGNAL */
-//extern struct message *dddebug;
-void PmISDN::message_mISDNsignal(unsigned long epoint_id, int message_id, union parameter *param)
+//extern struct lcr_msg *dddebug;
+void PmISDN::message_mISDNsignal(unsigned int epoint_id, int message_id, union parameter *param)
 {
        switch(param->mISDNsignal.message)
        {
                case mISDNSIGNAL_VOLUME:
-               if (p_m_txvol != param->mISDNsignal.txvol)
+               if (p_m_tx_gain != param->mISDNsignal.tx_gain)
                {
-                       p_m_txvol = param->mISDNsignal.txvol;
-                       PDEBUG(DEBUG_BCHANNEL, "we change tx-volume to shift=%d.\n", p_m_txvol);
-                       if (p_m_b_index >= 0)
+                       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], VOL_CHANGE_TX, p_m_txvol, "DSP-TXVOL", p_m_txvol);
-#else
-                               ph_control(p_m_mISDNport, this, p_m_mISDNport->b_addr[p_m_b_index], VOL_CHANGE_TX, p_m_txvol, "DSP-TXVOL", p_m_txvol);
-#endif
+                               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
-                       PDEBUG(DEBUG_BCHANNEL, "we already have tx-volume shift=%d.\n", p_m_rxvol);
-               if (p_m_rxvol != param->mISDNsignal.rxvol)
+                       PDEBUG(DEBUG_BCHANNEL, "we already have tx-volume shift=%d.\n", p_m_rx_gain);
+               if (p_m_rx_gain != param->mISDNsignal.rx_gain)
                {
-                       p_m_rxvol = param->mISDNsignal.rxvol;
-                       PDEBUG(DEBUG_BCHANNEL, "we change rx-volume to shift=%d.\n", p_m_rxvol);
-                       if (p_m_b_index >= 0)
+                       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], VOL_CHANGE_RX, p_m_rxvol, "DSP-RXVOL", p_m_rxvol);
-#else
-                               ph_control(p_m_mISDNport, this, p_m_mISDNport->b_addr[p_m_b_index], VOL_CHANGE_RX, p_m_rxvol, "DSP-RXVOL", p_m_rxvol);
-#endif
+                               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
-                       PDEBUG(DEBUG_BCHANNEL, "we already have rx-volume shift=%d.\n", p_m_rxvol);
+                       PDEBUG(DEBUG_BCHANNEL, "we already have rx-volume shift=%d.\n", p_m_rx_gain);
                break;
 
                case mISDNSIGNAL_CONF:
@@ -1818,13 +1666,9 @@ void PmISDN::message_mISDNsignal(unsigned long epoint_id, int message_id, union
                {
                        p_m_conf = param->mISDNsignal.conf;
                        PDEBUG(DEBUG_BCHANNEL, "we change conference to conf=%d.\n", p_m_conf);
-                       if (p_m_b_index >= 0)
+                       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)?CMX_CONF_JOIN:CMX_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
+                               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
                        PDEBUG(DEBUG_BCHANNEL, "we already have conf=%d.\n", p_m_conf);
                /* we must set, even if currently tone forbids conf */
@@ -1846,13 +1690,9 @@ void PmISDN::message_mISDNsignal(unsigned long epoint_id, int message_id, union
                {
                        p_m_delay = param->mISDNsignal.delay;
                        PDEBUG(DEBUG_BCHANNEL, "we change delay mode to delay=%d.\n", p_m_delay);
-                       if (p_m_b_index >= 0)
+                       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?CMX_DELAY:CMX_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
+                               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
                        PDEBUG(DEBUG_BCHANNEL, "we already have delay=%d.\n", p_m_delay);
                break;
@@ -1863,9 +1703,9 @@ 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 message *message;
+       struct lcr_msg *message;
 
        switch(param->crypt.type)
        {
@@ -1883,13 +1723,9 @@ void PmISDN::message_crypt(unsigned long epoint_id, int message_id, union parame
                memcpy(p_m_crypt_key, param->crypt.data, p_m_crypt_key_len);
                crypt_off:
                PDEBUG(DEBUG_BCHANNEL, "we set encryption to crypt=%d. (0 means OFF)\n", p_m_crypt);
-               if (p_m_b_index >= 0)
+               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?BF_ENABLE_KEY: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
+                       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);
                break;
 
                case CC_DACT_REQ:            /* deactivate session encryption */
@@ -1914,17 +1750,13 @@ void PmISDN::message_crypt(unsigned long epoint_id, int message_id, union parame
                        break;
                }
                p_m_crypt_msg_current = 0; /* reset */
-               p_m_crypt_msg_loops = 3; /* enable */
+               p_m_crypt_msg_loops = 6; /* enable */
 #if 0
                /* disable txmix, or we get corrupt data due to audio process */
                if (p_m_txmix && p_m_b_index>=0)
                {
                        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], CMX_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_socket[p_m_b_index], DSP_MIX_OFF, 0, "DSP-TXMIX", 0);
                }
 #endif
                break;
@@ -1938,7 +1770,7 @@ 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);
@@ -1967,15 +1799,16 @@ int PmISDN::message_epoint(unsigned long epoint_id, int message_id, union parame
 /*
  * main loop for processing messages from mISDN
  */
-#ifdef SOCKET_MISDN
 int mISDN_handler(void)
 {
-       int ret;
+       int ret, work = 0;
        struct mISDNport *mISDNport;
        class PmISDN *isdnport;
        int i;
-       char buffer[2048+MISDN_HEADER_LEN];
+       unsigned char buffer[2048+MISDN_HEADER_LEN];
        struct mISDNhead *hh = (struct mISDNhead *)buffer;
+       struct mbuffer *mb;
+       struct l3_msg *l3m;
 
        /* process all ports */
        mISDNport = mISDNport_first;
@@ -1985,6 +1818,12 @@ int mISDN_handler(void)
                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)
@@ -1997,9 +1836,9 @@ int mISDN_handler(void)
                                        {
                                                /* turn on RX */
                                                isdnport->p_m_rxoff = 0;
-                                               PDEBUG(DEBUG_BCHANNEL, "%s: receive data is required, so we turn them on\n");
+                                               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], CMX_RECEIVE_ON, 0, "DSP-RXOFF", 0);
+                                                       ph_control(mISDNport, isdnport, mISDNport->b_socket[isdnport->p_m_b_index], DSP_RECEIVE_ON, 0, "DSP-RXOFF", 0);
                                                return(1);
                                        }
                                } else
@@ -2009,9 +1848,9 @@ int mISDN_handler(void)
                                        {
                                                /* turn off RX */
                                                isdnport->p_m_rxoff = 1;
-                                               PDEBUG(DEBUG_BCHANNEL, "%s: receive data is not required, so we turn them off\n");
+                                               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], CMX_RECEIVE_OFF, 0, "DSP-RXOFF", 1);
+                                                       ph_control(mISDNport, isdnport, mISDNport->b_socket[isdnport->p_m_b_index], DSP_RECEIVE_OFF, 0, "DSP-RXOFF", 1);
                                                return(1);
                                        }
                                }
@@ -2023,9 +1862,9 @@ int mISDN_handler(void)
                                        {
                                                /* turn on RX */
                                                isdnport->p_m_txdata = 1;
-                                               PDEBUG(DEBUG_BCHANNEL, "%s: transmit data is required, so we turn them on\n");
+                                               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], CMX_TXDATA_ON, 0, "DSP-TXDATA", 1);
+                                                       ph_control(mISDNport, isdnport, mISDNport->b_socket[isdnport->p_m_b_index], DSP_TXDATA_ON, 0, "DSP-TXDATA", 1);
                                                return(1);
                                        }
                                } else
@@ -2035,55 +1874,57 @@ int mISDN_handler(void)
                                        {
                                                /* turn off RX */
                                                isdnport->p_m_txdata = 0;
-                                               PDEBUG(DEBUG_BCHANNEL, "%s: transmit data is not required, so we turn them off\n");
+                                               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], CMX_TXDATA_OFF, 0, "DSP-TXDATA", 0);
+                                                       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_stack[i] > -1)
+                       if (mISDNport->b_socket[i] > -1)
                        {
-                               ret = recv(mISDNport->b_stack[i], buffer, sizeof(buffer), 0);
-                               if (ret >= MISDN_HEADER_LEN)
+                               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_CONF:
-                                               case DL_DATA_CONF:
+                                               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_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", mISDNport->b_stack[i]);
+                                                       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_CONF:
-                                               case DL_ESTABLISH_CONF:
+                                               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_CONF:
-                                               case DL_RELEASE_CONF:
+                                               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], msg->len);
+                                               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
                                {
@@ -2094,112 +1935,98 @@ int mISDN_handler(void)
                        
                        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
 
-               /* layer 2 establish timer */
-               if (mISDNport->l2establish)
+               /* handle queued up-messages (d-channel) */
+               while ((mb = mdequeue(&mISDNport->upqueue)))
                {
-                       if (now-mISDNport->l2establish > 5)
+                       l3m = &mb->l3;
+                       switch(l3m->type)
                        {
-
-                               PDEBUG(DEBUG_ISDN, "the L2 establish timer expired, we try to establish the link portnum=%d.\n", mISDNport->portnum);
-                               mISDNport->ml3->to_layer2(mISDNport->ml3, DL_ESTABLISH_REQ);
-                               l1l2l3_trace_header(mISDNport, NULL, DL_ESTABLISH_REQ, DIRECTION_OUT);
+                               case MPH_ACTIVATE_IND:
+                               l1l2l3_trace_header(mISDNport, NULL, L1_ACTIVATE_IND, DIRECTION_IN);
                                end_trace();
-                               return(1);
-                       }
-               }
-
-
-               mISDNport = mISDNport->next;
-       }
+                               mISDNport->l1link = 1;
+                               break;
+       
+                               case MPH_DEACTIVATE_IND:
+                               l1l2l3_trace_header(mISDNport, NULL, L1_DEACTIVATE_IND, DIRECTION_IN);
+                               end_trace();
+                               mISDNport->l1link = 0;
+                               break;
 
-}
-#else
-int mISDN_handler(void)
-{
-       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)
-               {
-                       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)
+                               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)
                                {
-                                       /* 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");
-                                               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
+                                       case L1_SIGNAL_LOS_ON:
+                                       mISDNport->los = 1;
+                                       break;
+                                       case L1_SIGNAL_LOS_OFF:
+                                       mISDNport->los = 0;
+                                       break;
+                                       case L1_SIGNAL_AIS_ON:
+                                       mISDNport->ais = 1;
+                                       break;
+                                       case L1_SIGNAL_AIS_OFF:
+                                       mISDNport->ais = 0;
+                                       break;
+                                       case L1_SIGNAL_RDI_ON:
+                                       mISDNport->rdi = 1;
+                                       break;
+                                       case L1_SIGNAL_RDI_OFF:
+                                       mISDNport->rdi = 0;
+                                       break;
+                                       case L1_SIGNAL_SLIP_TX:
+                                       mISDNport->slip_tx++;
+                                       break;
+                                       case L1_SIGNAL_SLIP_RX:
+                                       mISDNport->slip_rx++;
+                                       break;
+                               }
+                               break;
+
+                               case MT_L2ESTABLISH:
+                               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)
                                {
-                                       /* rx NOT required */
-                                       if (!isdnport->p_m_rxoff)
+                                       if (mISDNport->l2establish)
                                        {
-                                               /* turn off RX */
-                                               isdnport->p_m_rxoff = 1;
-                                               PDEBUG(DEBUG_BCHANNEL, "%s: receive data is not required, so we turn them off\n");
-                                               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);
+                                               mISDNport->l2establish = 0;
+                                               PDEBUG(DEBUG_ISDN, "the link became active before l2establish timer expiry.\n");
                                        }
+                                       mISDNport->l2link = 1;
                                }
-                               /* recording */
-                               if (isdnport->p_record)
+                               break;
+
+                               case MT_L2RELEASE:
+                               if (!mISDNport->l2establish)
                                {
-                                       /* 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");
-                                               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);
-                                               return(1);
-                                       }
-                               } else
+                                       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)
                                {
-                                       /* txdata NOT required */
-                                       if (isdnport->p_m_txdata)
+                                       mISDNport->l2link = 0;
+                                       if (!mISDNport->l2establish && mISDNport->l2hold)
                                        {
-                                               /* turn off RX */
-                                               isdnport->p_m_txdata = 0;
-                                               PDEBUG(DEBUG_BCHANNEL, "%s: transmit data is not required, so we turn them off\n");
-                                               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);
-                                               return(1);
+                                               PDEBUG(DEBUG_ISDN, "set timer and establish.\n");
+                                               time(&mISDNport->l2establish);
+                                               mISDNport->ml3->to_layer3(mISDNport->ml3, MT_L2ESTABLISH, 0, NULL);
                                        }
                                }
+                               break;
+
+                               default:
+                               /* l3-data is sent to LCR */
+                               stack2manager(mISDNport, l3m->type, l3m->pid, l3m);
                        }
-                       i++;
+                       /* free message */
+                       free_l3_msg(l3m);
                }
+
 #if 0
                if (mISDNport->l1timeout && now>mISDNport->l1timeout)
                { ---}
@@ -2207,477 +2034,88 @@ int mISDN_handler(void)
                        mISDNport->l1timeout = 0;
 #endif
 
+               /* layer 2 establish timer */
                if (mISDNport->l2establish)
                {
                        if (now-mISDNport->l2establish > 5)
                        {
-                               if (mISDNport->ntmode)
+                               mISDNport->l2establish = 0;
+                               if (mISDNport->l2hold && (mISDNport->ptp || !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, DL_ESTABLISH | REQUEST, DIRECTION_OUT);
-                               end_trace();
-                               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);
-       }
-       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);
-       }
-
-       /* 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;
+                                       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);
+                                       time(&mISDNport->l2establish);
+                                       return(1);
                                }
-                               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;
-       }
 
-       /* 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);
-               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, PH_ACTIVATE | (frm->prim & 0x3), DIRECTION_IN);
-                               end_trace();
-                               goto ss_act;
-                               case SSTATUS_L1_DEACTIVATED:
-                               l1l2l3_trace_header(mISDNport, NULL, PH_DEACTIVATE | (frm->prim & 0x3), DIRECTION_IN);
-                               end_trace();
-                               goto ss_deact;
-                               case SSTATUS_L2_ESTABLISHED:
-                               l1l2l3_trace_header(mISDNport, NULL, DL_ESTABLISH | (frm->prim & 0x3), DIRECTION_IN);
-                               end_trace();
-                               goto ss_estab;
-                               case SSTATUS_L2_RELEASED:
-                               l1l2l3_trace_header(mISDNport, NULL, DL_RELEASE | (frm->prim & 0x3), DIRECTION_IN);
-                               end_trace();
-                               goto ss_rel;
-                       }
-                       break;
-
-                       case PH_ACTIVATE | CONFIRM:
-                       case PH_ACTIVATE | INDICATION:
-                       l1l2l3_trace_header(mISDNport, NULL, frm->prim, 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 | CONFIRM:
-                       case PH_DEACTIVATE | INDICATION:
-                       l1l2l3_trace_header(mISDNport, NULL, frm->prim, 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;
-
-                       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;
-
-                       case DL_ESTABLISH | INDICATION:
-                       case DL_ESTABLISH | CONFIRM:
-                       l1l2l3_trace_header(mISDNport, NULL, frm->prim, DIRECTION_IN);
-                       end_trace();
-                       if (!mISDNport->ntmode) break; /* !!!!!!!!!!!!!!!! */
-                       ss_estab:
-                       if (mISDNport->l2establish)
-                       {
-                               mISDNport->l2establish = 0;
-                               PDEBUG(DEBUG_ISDN, "the link became active before l2establish timer expiry.\n");
-                       }
-                       mISDNport->l2link = 1;
-                       break;
-
-                       case DL_RELEASE | INDICATION:
-                       case DL_RELEASE | CONFIRM:
-                       l1l2l3_trace_header(mISDNport, NULL, frm->prim, DIRECTION_IN);
-                       end_trace();
-                       if (!mISDNport->ntmode) break; /* !!!!!!!!!!!!!!!! */
-                       ss_rel:
-                       mISDNport->l2link = 0;
-                       if (mISDNport->ptp)
-                       {
-                               time(&mISDNport->l2establish);
-                               PDEBUG(DEBUG_ISDN, "because we are ptp, we set a l2establish timer.\n");
-                       }
-                       break;
-
-                       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;
-
-                       /* 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);
+       /* if we received at least one b-frame, we will return 1 */
+       return(work);
 }
-#endif
 
-#ifdef SOCKET_MISDN
 int do_layer3(struct mlayer3 *ml3, unsigned int cmd, unsigned int pid, struct l3_msg *l3m)
 {
-       struct mISDNport *mISDNport = ml3->private;
-
-       if (cmd == MT_ASSIGN)
+       /* IMPORTAINT:
+        *
+        * l3m must be queued, except for MT_ASSIGN
+        *
+        */
+       struct mISDNport *mISDNport = (struct mISDNport *)ml3->priv;
+       struct mbuffer *mb;
+
+       /* special MT_ASSIGN handling:
+        *
+        * if we request a PID from mlayer, we always do it while lcr is locked.
+        * therefore we must check the MT_ASSIGN reply first before we lock.
+        * this is because the MT_ASSIGN reply is received with the requesting
+        * process, not by the mlayer thread!
+        * this means, that the reply is sent during call of the request.
+        * 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)
        {
-               ueberdenken!!!
+               /* 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);
        }
        
-       /* lock LCR */
-       achtung MT_ASSIGN kommt hier an
-       lock it baby
-
-       /* d-message */
-       switch(cmd)
-       {
-               case MGR_SHORTSTATUS_IND:
-               case MGR_SHORTSTATUS_CONF:
-               switch(frm->dinfo) {
-                       case SSTATUS_L1_ACTIVATED:
-                       l1l2l3_trace_header(mISDNport, NULL, PH_ACTIVATE_IND, DIRECTION_IN);
-                       end_trace();
-                       goto ss_act;
-                       case SSTATUS_L1_DEACTIVATED:
-                       l1l2l3_trace_header(mISDNport, NULL, PH_DEACTIVATE_IND, DIRECTION_IN);
-                       end_trace();
-                       goto ss_deact;
-                       case SSTATUS_L2_ESTABLISHED:
-                       l1l2l3_trace_header(mISDNport, NULL, DL_ESTABLISH_IND, DIRECTION_IN);
-                       end_trace();
-                       goto ss_estab;
-                       case SSTATUS_L2_RELEASED:
-                       l1l2l3_trace_header(mISDNport, NULL, DL_RELEASE_IND, DIRECTION_IN);
-                       end_trace();
-                       goto ss_rel;
-               }
-               break;
-
-               case PH_ACTIVATE_CONF:
-               case PH_ACTIVATE_IND:
-               l1l2l3_trace_header(mISDNport, NULL, cmd, DIRECTION_IN);
-               end_trace();
-               ss_act:
-               mISDNport->l1link = 1;
-#if 0
-               if (mISDNport->ntmode)
-                       setup_queue(mISDNport, 1);
-#endif
-               break;
-
-               case PH_DEACTIVATE | CONFIRM:
-               case PH_DEACTIVATE | INDICATION:
-               l1l2l3_trace_header(mISDNport, NULL, cmd, DIRECTION_IN);
-               end_trace();
-               ss_deact:
-               mISDNport->l1link = 0;
-raus mit der setup-queue, da dies im stack geschieht
-#if 0
-               if (mISDNport->ntmode)
-                       setup_queue(mISDNport, 0);
-#endif
-               break;
-
-               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;
-
-               case DL_ESTABLISH_IND:
-               case DL_ESTABLISH_CONF:
-               l1l2l3_trace_header(mISDNport, NULL, cmd, DIRECTION_IN);
-               end_trace();
-               if (!mISDNport->ntmode) break; /* !!!!!!!!!!!!!!!! */
-               ss_estab:
-               if (mISDNport->l2establish)
-               {
-                       mISDNport->l2establish = 0;
-                       PDEBUG(DEBUG_ISDN, "the link became active before l2establish timer expiry.\n");
-               }
-               mISDNport->l2link = 1;
-               break;
-
-               case DL_RELEASE_IND:
-               case DL_RELEASE_CONF:
-               l1l2l3_trace_header(mISDNport, NULL, cmd, DIRECTION_IN);
-               end_trace();
-               ss_rel:
-               mISDNport->l2link = 0;
-               if (mISDNport->ptp)
-               {
-                       time(&mISDNport->l2establish);
-                       PDEBUG(DEBUG_ISDN, "because we are ptp, we set a l2establish timer.\n");
-               }
-               break;
-
-               default:
-               /* l3-data is sent to LCR */
-               message_from_mlayer3(mISDNport, cmd, pid, l3m);
-       }
-
-       /* unlock LCR */
-       unlock it baby
-
-       /* free message */
-       if (l3m)
-               free_l3_msg(l3m);
-       return(0);
-
+       /* queue message, create, if required */
+       if (!l3m)
+       {
+               l3m = alloc_l3_msg();
+               if (!l3m)
+                       FATAL("No memory for layer 3 message\n");
+       }
+       mb = container_of(l3m, struct mbuffer, l3);
+       l3m->type = cmd;
+       l3m->pid = pid;
+       mqueue_tail(&mISDNport->upqueue, mb);
+       return 0;
 }
-#endif
 
 
 /*
  * global function to add a new card (port)
  */
-struct mISDNport *mISDNport_open(int port, int ptp, int ptmp, int force_nt, struct interface *interface)
+struct mISDNport *mISDNport_open(int port, int ptp, int force_nt, int l2hold, struct interface *interface)
 {
        int ret;
-       unsigned char buff[1025];
-       iframe_t *frm = (iframe_t *)buff;
        struct mISDNport *mISDNport, **mISDNportp;
        int i, cnt;
-       int pri, bri, ports;
+       int pri, bri, pots;
        int nt, te;
-#ifdef SOCKET_MISDN
-       struct mlayer3 *ml3;
+//     struct mlayer3 *ml3;
        struct mISDN_devinfo devinfo;
+       unsigned int protocol, prop;
 
        ret = ioctl(mISDNsocket, IMGETCOUNT, &cnt);
        if (ret < 0)
@@ -2685,16 +2123,6 @@ struct mISDNport *mISDNport_open(int port, int ptp, int ptmp, int force_nt, stru
                fprintf(stderr, "Cannot get number of mISDN devices. (ioctl IMGETCOUNT failed ret=%d)\n", ret);
                return(NULL);
        }
-#else
-//     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)
        {
@@ -2707,14 +2135,13 @@ struct mISDNport *mISDNport_open(int port, int ptp, int ptmp, int force_nt, stru
                return(NULL);
        }
 
-       pri = bri = ports = nt = te = 0;
-#ifdef SOCKET_MISDN
+       pri = bri = pots = nt = te = 0;
        devinfo.id = port - 1;
-       ret = ioctl(socket, IMGETDEVINFO, &devinfo);
-       if (ret <= 0)
+       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);
-               break;
+               return(NULL);
        }
        /* output the port info */
        if (devinfo.Dprotocols & (1 << ISDN_P_TE_S0))
@@ -2727,20 +2154,16 @@ struct mISDNport *mISDNport_open(int port, int ptp, int ptmp, int force_nt, stru
                bri = 1;
                nt = 1;
        }
-#ifdef ISDN_P_TE_E1
        if (devinfo.Dprotocols & (1 << ISDN_P_TE_E1))
        {
                pri = 1;
                te = 1;
        }
-#endif
-#ifdef ISDN_P_NT_E1
        if (devinfo.Dprotocols & (1 << ISDN_P_NT_E1))
        {
                pri = 1;
                nt = 1;
        }
-#endif
 #ifdef ISDN_P_FXS
        if (devinfo.Dprotocols & (1 << ISDN_P_FXS))
        {
@@ -2757,7 +2180,7 @@ struct mISDNport *mISDNport_open(int port, int ptp, int ptmp, int force_nt, stru
 #endif
        if (force_nt && !nt)
        {
-               PERROR_RUNTIME("Port %d does not support NT-mode.\n", port);
+               PERROR_RUNTIME("Port %d does not support NT-mode\n", port);
                return(NULL);
        }
        if (bri && pri)
@@ -2780,114 +2203,70 @@ struct mISDNport *mISDNport_open(int port, int ptp, int ptmp, int force_nt, stru
                PERROR_RUNTIME("Port %d does not support NT-mode nor TE-mode!\n", port);
                return(NULL);
        }
-       /* force nt, by turning off TE */
+       /* set NT by turning off TE */
        if (force_nt && nt)
                te = 0;
        /* 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);
-               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);
-               }
-               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]);
-                       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]);
-                               return(NULL);
-                       }
-               }
-               if (stinf->pid.protocol[4])
-               {
-                       PERROR_RUNTIME("Given port %d: Layer 4 protocol not allowed.\n", port);
-                       return(NULL);
-               }
-       }
-#endif
 
        /* add mISDNport structure */
        mISDNportp = &mISDNport_first;
        while(*mISDNportp)
                mISDNportp = &((*mISDNportp)->next);
        mISDNport = (struct mISDNport *)MALLOC(sizeof(struct mISDNport));
+       mISDNport->l1link = -1;
        pmemuse++;
        *mISDNportp = mISDNport;
 
+       /* if pri, must set PTP */
+       if (pri)
+               ptp = 1;
+       
+       /* set l2hold */
+       switch (l2hold)
+       {
+               case -1: // off
+               l2hold = 0;
+               break;
+               case 1: // on
+               l2hold = 1;
+               break;
+               default:
+               if (ptp)
+                       l2hold = 1;
+               else
+                       l2hold = 0;
+               break;
+       }
+               
        /* allocate ressources of port */
-#ifdef SOCKET_MISDN
-       /* open layer 3 */
-       protocol = (nt)?L3_PROTOCOL_DSS1_USER:L3_PROTOCOL_DSS1_NETWORK;
-       prop = 0;
-       if (ptp)
-              prop |= FLG_PTP;
-       if (ptmp && pri)
-              prop |= FLG_FORCE_PTMP;
-       mISDNport->ml3 = open_layer3(port-1, protocol, prop , do_dchannel, mISDNport);
+       /* 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)
        {
-               PERROR_RUNTIME("Cannot get layer(%d) id of port %d\n", nt?2:4, port);
+               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);
        }
 
@@ -2909,161 +2288,30 @@ struct mISDNport *mISDNport_open(int port, int ptp, int ptmp, int force_nt, stru
 
        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);
-       if ((stinf->pid.protocol[2]&ISDN_PID_L2_DF_PTP) || (nt&&ptp) || pri)
-       {
-               PDEBUG(DEBUG_ISDN, "Port is point-to-point.\n");
-               ptp = 1;
-               if (ptmp && nt)
-               {
-                       PDEBUG(DEBUG_ISDN, "Port is forced to point-to-multipoint.\n");
-                       ptp = 0;
-               }
-       }
-
-       /* 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++;
-               }
-#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
        mISDNport->portnum = port;
        mISDNport->ntmode = nt;
        mISDNport->pri = pri;
        mISDNport->ptp = ptp;
+       mISDNport->l2hold = l2hold;
        PDEBUG(DEBUG_ISDN, "Port has %d b-channels.\n", mISDNport->b_num);
        i = 0;
        while(i < mISDNport->b_num)
        {
                mISDNport->b_state[i] = B_STATE_IDLE;
-#ifdef SOCKET_MISDN
-               mISDNport->b_socket = -1;
-#else
-               mISDNport->b_stid[i] = stinf->child[i];
-               PDEBUG(DEBUG_ISDN, "b_stid[%d] = 0x%x.\n", i, mISDNport->b_stid[i]);
-#endif
+               mISDNport->b_socket[i] = -1;
                i++;
        }
 
-       /* 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->ptp && !mISDNport->ntmode)
+       /* if ptp, pull up the link */
+       if (mISDNport->l2hold && (mISDNport->ptp || !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);
-       }
-       /* if ptp AND nt-mode, pull up the link */
-       if (mISDNport->ptp && mISDNport->ntmode)
-       {
-               msg_t *dmsg;
-               /* L2 */
-               dmsg = create_l2msg(DL_ESTABLISH | REQUEST, 0, 0);
-               if (mISDNport->nst.manager_l3(&mISDNport->nst, dmsg))
-                       free_msg(dmsg);
+               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);
        }
+
        /* initially, we assume that the link is down, exept for nt-ptmp */
        mISDNport->l2link = (mISDNport->ntmode && !mISDNport->ptp)?1:0;
 
@@ -3077,6 +2325,7 @@ struct mISDNport *mISDNport_open(int port, int ptp, int ptmp, int force_nt, stru
                    CATEGORY_CH,
                    0,
                    "PORT (open)");
+       add_trace("mode", NULL, (mISDNport->ntmode)?"network":"terminal");
        add_trace("channels", NULL, "%d", mISDNport->b_num);
        end_trace();
        return(mISDNport);
@@ -3101,8 +2350,6 @@ void mISDNport_close(struct mISDNport *mISDNport)
        struct mISDNport **mISDNportp;
        class Port *port;
        class PmISDN *isdnport;
-       net_stack_t *nst;
-       unsigned char buf[32];
        int i;
 
        /* remove all port instance that are linked to this mISDNport */
@@ -3139,7 +2386,7 @@ void mISDNport_close(struct mISDNport *mISDNport)
        i = 0;
        while(i < mISDNport->b_num)
        {
-               if (mISDNport->b_addr[i])
+               if (mISDNport->b_socket[i] > -1)
                {
                        _bchannel_destroy(mISDNport, i);
                        PDEBUG(DEBUG_BCHANNEL, "freeing %s port %d bchannel (index %d).\n", (mISDNport->ntmode)?"NT":"TE", mISDNport->portnum, i);
@@ -3147,36 +2394,12 @@ void mISDNport_close(struct mISDNport *mISDNport)
                i++;
        }
 
-#ifdef SOCKET_MISDN
-       close_layer3(mISDNport->ml3);
-#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)
+       /* close layer 3, if open and purge upqueue */
+       if (mISDNport->ml3)
        {
-               if (mISDNport->upper_id)
-                       mISDN_write_frame(mISDNdevice, buf, mISDNport->upper_id | FLG_MSG_DOWN, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
+               close_layer3(mISDNport->ml3);
+               mqueue_purge(&mISDNport->upqueue);
        }
-#endif
 
        /* remove from list */
        mISDNportp = &mISDNport_first;
@@ -3201,296 +2424,18 @@ void mISDNport_close(struct mISDNport *mISDNport)
 
 
 /*
- * global function to show all available isdn ports
- */
-void mISDN_port_info(void)
-{
-       int ret;
-       int i, ii, p;
-       int useable, nt, te, pri, bri, pots;
-       unsigned char buff[1025];
-       iframe_t *frm = (iframe_t *)buff;
-#ifdef SOCKET_MISDN
-       struct mISDN_devinfo devinfo;
-       int socket;
-
-       /* open mISDN */
-       socket = socket(PF_ISDN, SOCK_RAW, ISDN_P_BASE);
-       if (socket < 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(socket, IMGETCOUNT, &ii);
-       if (ret < 0)
-       {
-               fprintf(stderr, "Cannot get number of mISDN devices. (ioctl IMGETCOUNT failed ret=%d)\n", ret);
-               goto done;
-       }
-#else
-       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(socket, 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;
-               }
-#ifdef ISDN_P_TE_E1
-               if (devinfo.Dprotocols & (1 << ISDN_P_TE_E1))
-               {
-                       pri = 1;
-                       te = 1;
-               }
-#endif
-#ifdef ISDN_P_NT_E1
-               if (devinfo.Dprotocols & (1 << ISDN_P_NT_E1))
-               {
-                       pri = 1;
-                       nt = 1;
-               }
-#endif
-#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 || ports))
-                       usable = 1;
-
-               if (te && bri)
-                       printf("TE-mode BRI S/T interface line (for phone lines)");
-               if (nt && bri)
-                       printf("NT-mode BRI S/T interface port (for phones)");
-               if (te && pri)
-                       printf("TE-mode PRI E1  interface line (for phone lines)");
-               if (nt && pri)
-                       printf("NT-mode PRI E1  interface port (for E1 terminals)");
-               if (te && pots)
-                       printf("FXS     POTS    interface port (for analog lines)");
-               if (nt && pots)
-                       printf("FXO     POTS    interface port (for analog phones)");
-               if (ports)
-               {
-                       usable = 0;
-                       printf("\n -> Analog interfaces are not supported.");
-               } else
-               if (!usable)
-               {
-                       printf("unsupported interface protocol bits 0x%016x", devinfo.Dprotocols);
-               }
-               printf("\n");
-
-               printf("  - %d B-channels\n", devinfo.nfbchan);
-#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 terminals)");
-                       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(sd);
-#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
  */
 void PmISDN::txfromup(unsigned char *data, int length)
 {
-#ifdef SOCKET_MISDN
        unsigned char buf[MISDN_HEADER_LEN+((length>ISDN_LOAD)?length:ISDN_LOAD)];
-       struct mISDNhead *frm = (struct mISDNhead *)buf;
-
-       if (p_m_b_index < 0)
-               return;
-       if (!p_m_mISDNport->b_socket[p_m_b_index])
-               return;
-#else
-       unsigned char buf[mISDN_HEADER_LEN+((length>ISDN_LOAD)?length:ISDN_LOAD)];
-       iframe_t *frm = (iframe_t *)buf;
+       struct mISDNhead *hh = (struct mISDNhead *)buf;
+       int ret;
 
        if (p_m_b_index < 0)
                return;
-       if (!p_m_mISDNport->b_addr[p_m_b_index])
+       if (p_m_mISDNport->b_state[p_m_b_index] != B_STATE_ACTIVE)
                return;
-#endif
 
        /* check if high priority tones exist
         * ignore data in this case
@@ -3504,11 +2449,13 @@ void PmISDN::txfromup(unsigned char *data, int length)
         */
        if (p_m_load==0 && ISDN_LOAD>0)
        {
-
-               memcpy(buf+mISDN_HEADER_LEN, data, ISDN_LOAD);
-               frm->len = ISDN_LOAD;
-               mISDN_write(mISDNdevice, frm, mISDN_HEADER_LEN+frm->len, TIMEOUT_1SEC);
-               p_m_load += frm->len;
+               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);
+               if (ret <= 0)
+                       PERROR("Failed to send to socket %d\n", p_m_mISDNport->b_socket[p_m_b_index]);
+               p_m_load += ISDN_LOAD;
        }
 
        /* drop if load would exceed ISDN_MAXLOAD
@@ -3518,21 +2465,12 @@ void PmISDN::txfromup(unsigned char *data, int length)
                return;
 
        /* make and send frame */
-#ifdef SOCKET_MISDN
-       frm->prim = DL_DATA_REQ;
-       frm->id = 0;
+       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);
-       if (!ret)
-               PERROR("Failed to send to socket %d\n", handle);
-#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
+       if (ret <= 0)
+               PERROR("Failed to send to socket %d\n", p_m_mISDNport->b_socket[p_m_b_index]);
        p_m_load += length;
 }