backup
[lcr.git] / mISDN.cpp
index 61eff9f..cf70697 100644 (file)
--- a/mISDN.cpp
+++ b/mISDN.cpp
@@ -53,26 +53,26 @@ PmISDN::PmISDN(int type, mISDNport *mISDNport, char *portname, struct port_setti
        p_m_b_channel = 0;
        p_m_b_exclusive = 0;
        p_m_b_reserve = 0;
-       p_m_b_addr = 0;
-       p_m_b_stid = 0;
        p_m_jittercheck = 0;
        p_m_delete = 0;
        p_m_hold = 0;
        p_m_txvol = p_m_rxvol = 0;
        p_m_conf = 0;
        p_m_txdata = 0;
-#warning set delay by routing parameter or interface config
        p_m_delay = 0;
        p_m_echo = 0;
        p_m_tone = 0;
        p_m_rxoff = 0;
        p_m_calldata = 0;
-       p_m_dtmf = !options.nodtmf;
-       sollen wir daraus eine interface-option machen?:
+       p_m_dtmf = !mISDNport->ifport->nodtmf;
        p_m_timeout = 0;
        p_m_timer = 0;
-#warning denke auch an die andere seite. also das setup sollte dies weitertragen
 
+       /* audio from up */
+       p_m_fromup_buffer_readp = 0;
+       p_m_fromup_buffer_writep = 0;
+
+       /* crypt */
        p_m_crypt = 0;
        p_m_crypt_listen = 0;
        p_m_crypt_msg_loops = 0;
@@ -96,9 +96,8 @@ PmISDN::PmISDN(int type, mISDNport *mISDNport, char *portname, struct port_setti
                mISDNport->b_reserved++;
        }
 
-       } else
        /* reserve channel */
-       if (channel) // only if constructor was called with a channel resevation
+       if (channel > 0) // only if constructor was called with a channel resevation
                seize_bchannel(channel, exclusive);
 
        /* we increase the number of objects: */
@@ -115,7 +114,7 @@ PmISDN::~PmISDN()
        struct message *message;
 
        /* remove bchannel relation */
-       free_bchannel();
+       drop_bchannel();
 
        /* release epoint */
        while (p_epointlist)
@@ -136,9 +135,128 @@ PmISDN::~PmISDN()
 
 
 /*
+ * trace
+ */
+void chan_trace_header(struct mISDNport *mISDNport, class PmISDN *port, char *msgtext, int direction)
+{
+       /* 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,
+                   port?port->p_dialinginfo.number:NULL,
+                   direction,
+                   CATEGORY_CH,
+                   port?port->p_serial:0,
+                   msgtext);
+}
+
+
+/*
+ * layer trace header
+ */
+static struct isdn_message {
+       char *name;
+       unsigned long 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},
+
+       {NULL, 0},
+};
+static char *isdn_prim[4] = {
+       " REQUEST",
+       " CONFIRM",
+       " INDICATION",
+       " RESPONSE",
+};
+void l1l2l3_trace_header(struct mISDNport *mISDNport, class PmISDN *port, unsigned long prim, int direction)
+{
+       int i;
+       char msgtext[64] = "<<UNKNOWN MESSAGE>>";
+
+       /* select message and primitive text */
+       i = 0;
+       while(isdn_message[i].name)
+       {
+               if (isdn_message[i].value == (prim&0xffffff00))
+               {
+                       SCPY(msgtext, isdn_message[i].name);
+                       break;
+               }
+               i++;
+       }
+       SCAT(msgtext, isdn_prim[prim&0x00000003]);
+
+       /* add direction */
+       if (direction && (prim&0xffffff00)!=CC_NEW_CR && (prim&0xffffff00)!=CC_RELEASE_CR)
+       {
+               if (mISDNport)
+               {
+                       if (mISDNport->ntmode)
+                       {
+                               if (direction == DIRECTION_OUT)
+                                       SCAT(msgtext, " N->U");
+                               else
+                                       SCAT(msgtext, " N<-U");
+                       } else
+                       {
+                               if (direction == DIRECTION_OUT)
+                                       SCAT(msgtext, " U->N");
+                               else
+                                       SCAT(msgtext, " U<-N");
+                       }
+               }
+       }
+
+       /* 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,
+                   port?port->p_dialinginfo.number:NULL,
+                   direction,
+                   CATEGORY_CH,
+                   port?port->p_serial:0,
+                   msgtext);
+}
+
+
+/*
  * send control information to the channel (dsp-module)
  */
-void ph_control(unsigned long b_addr, int c1, int c2)
+void ph_control(struct mISDNport *mISDNport, class PmISDN *isdnport, unsigned long b_addr, int c1, int c2, char *trace_name, int trace_value)
 {
        unsigned char buffer[mISDN_HEADER_LEN+sizeof(int)+sizeof(int)];
        iframe_t *ctrl = (iframe_t *)buffer; 
@@ -151,9 +269,12 @@ void ph_control(unsigned long b_addr, int c1, int c2)
        *d++ = c1;
        *d++ = c2;
        mISDN_write(mISDNdevice, ctrl, mISDN_HEADER_LEN+ctrl->len, TIMEOUT_1SEC);
+       chan_trace_header(mISDNport, isdnport, "BCHANNEL control", DIRECTION_OUT);
+       add_trace(trace_name, NULL, "%d", trace_value);
+       end_trace();
 }
 
-void ph_control_block(unsigned long b_addr, int c1, void *c2, int c2_len)
+void ph_control_block(struct mISDNport *mISDNport, class PmISDN *isdnport, unsigned long b_addr, int c1, void *c2, int c2_len, char *trace_name, int trace_value)
 {
        unsigned char buffer[mISDN_HEADER_LEN+sizeof(int)+c2_len];
        iframe_t *ctrl = (iframe_t *)buffer;
@@ -166,194 +287,378 @@ void ph_control_block(unsigned long b_addr, int c1, void *c2, int c2_len)
        *d++ = c1;
        memcpy(d, c2, c2_len);
        mISDN_write(mISDNdevice, ctrl, mISDN_HEADER_LEN+ctrl->len, TIMEOUT_1SEC);
+       chan_trace_header(mISDNport, isdnport, "BCHANNEL control", DIRECTION_OUT);
+       add_trace(trace_name, NULL, "%d", trace_value);
+       end_trace();
 }
 
 
 /*
- * activate / deactivate bchannel
+ * subfunction for bchannel_event
+ * create stack
  */
-static void bchannel_activate(struct mISDNport *mISDNport, int i)
+static int _bchannel_create(struct mISDNport *mISDNport, int i)
 {
-       iframe_t act;
+       unsigned char buff[1024];
+       layer_info_t li;
+       mISDN_pid_t pid;
+       int ret;
 
-       /* we must activate if we are deactivated */
-       if (mISDNport->b_state[i] == B_STATE_IDLE)
+       if (mISDNport->b_stid[i])
        {
-               /* activate bchannel */
-               PDEBUG(DEBUG_BCHANNEL, "activating bchannel (index %d), because currently idle (address 0x%x).\n", i, mISDNport->b_addr[i]);
-               act.prim = DL_ESTABLISH | 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);
-               mISDNport->b_state[i] = B_STATE_ACTIVATING;
-               return;
+               PERROR("Error: no stack for index");
+               return(-1);
+       }
+       if (mISDNport->b_addr[i])
+       {
+               PERROR("Error: stack already created");
+               return(-1);
        }
 
-       /* if we are active, we configure our channel */
-       if (mISDNport->b_state[i] == B_STATE_ACTIVE)
+       /* 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)
        {
-               unsigned char buffer[mISDN_HEADER_LEN+(ISDN_PRELOAD<<3)];
-               iframe_t *pre = (iframe_t *)buffer; /* preload data */
-               unsigned char *p = (unsigned char *)&pre->data.p;
+               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", "%d", mISDNport->b_stid[i]);
+       add_trace("stack", "address", "%d", mISDNport->b_addr[i]);
+       end_trace();
 
-               /* it is an error if this channel is not associated with a port object */
-               if (!mISDNport->b_port[i])
-               {
-                       PERROR("bchannel index i=%d not associated with a port object\n", i);
-                       return;
-               }
+       return(0);
 
-               /* configure dsp features */
-               if (mISDNport->b_port[i]->p_m_txdata)
-               {
-                       PDEBUG(DEBUG_BCHANNEL, "during activation, we set txdata to txdata=%d.\n", mISDNport->b_port[i]->p_m_txdata);
-                       ph_control(mISDNport->b_addr[i], (mISDNport->b_port[i]->p_m_txdata)?CMX_TXDATA_ON:CMX_TXDATA_OFF);
-               }
-               if (mISDNport->b_port[i]->p_m_delay)
-               {
-                       PDEBUG(DEBUG_BCHANNEL, "during activation, we set delay to delay=%d.\n", mISDNport->b_port[i]->p_m_delay);
-                       ph_control(mISDNport->b_addr[i], CMX_DELAY, mISDNport->b_port[i]->p_m_delay);
-               }
-               if (mISDNport->b_port[i]->p_m_txvol)
-               {
-                       PDEBUG(DEBUG_BCHANNEL, "during activation, we change tx-volume to shift=%d.\n", mISDNport->b_port[i]->p_m_txvol);
-                       ph_control(mISDNport->b_addr[i], VOL_CHANGE_TX, mISDNport->b_port[i]->p_m_txvol);
-               }
-               if (mISDNport->b_port[i]->p_m_rxvol)
-               {
-                       PDEBUG(DEBUG_BCHANNEL, "during activation, we change rx-volume to shift=%d.\n", mISDNport->b_port[i]->p_m_rxvol);
-                       ph_control(mISDNport->b_addr[i], VOL_CHANGE_RX, mISDNport->b_port[i]->p_m_rxvol);
-               }
-//tone         if (mISDNport->b_port[i]->p_m_conf && !mISDNport->b_port[i]->p_m_tone)
-               if (mISDNport->b_port[i]->p_m_conf)
-               {
-                       PDEBUG(DEBUG_BCHANNEL, "during activation, we change conference to conf=%d.\n", mISDNport->b_port[i]->p_m_conf);
-                       ph_control(mISDNport->b_addr[i], CMX_CONF_JOIN, mISDNport->b_port[i]->p_m_conf);
-               }
-               if (mISDNport->b_port[i]->p_m_echo)
-               {
-                       PDEBUG(DEBUG_BCHANNEL, "during activation, we set echo to echo=%d.\n", mISDNport->b_port[i]->p_m_echo);
-                       ph_control(mISDNport->b_addr[i], CMX_ECHO_ON, 0);
-               }
-               if (mISDNport->b_port[i]->p_m_tone)
-               {
-                       PDEBUG(DEBUG_BCHANNEL, "during activation, we set tone to tone=%d.\n", mISDNport->b_port[i]->p_m_tone);
-                       ph_control(mISDNport->b_addr[i], TONE_PATT_ON, mISDNport->b_port[i]->p_m_tone);
-               }
-               if (mISDNport->b_port[i]->p_m_rxoff)
-               {
-                       PDEBUG(DEBUG_BCHANNEL, "during activation, we set rxoff to rxoff=%d.\n", mISDNport->b_port[i]->p_m_rxoff);
-                       ph_control(mISDNport->b_addr[i], CMX_RECEIVE_OFF, 0);
-               }
-#if 0
-               if (mISDNport->b_port[i]->p_m_txmix)
-               {
-                       PDEBUG(DEBUG_BCHANNEL, "during activation, we set txmix to txmix=%d.\n", mISDNport->b_port[i]->p_m_txmix);
-                       ph_control(mISDNport->b_addr[i], CMX_MIX_ON, 0);
-               }
-#endif
-               if (mISDNport->b_port[i]->p_m_dtmf)
-               {
-                       PDEBUG(DEBUG_BCHANNEL, "during activation, we set dtmf to dtmf=%d.\n", mISDNport->b_port[i]->p_m_dtmf);
-                       ph_control(mISDNport->b_addr[i], DTMF_TONE_START, 0);
-               }
-               if (mISDNport->b_port[i]->p_m_crypt)
-               {
-                       PDEBUG(DEBUG_BCHANNEL, "during activation, we set crypt to crypt=%d.\n", mISDNport->b_port[i]->p_m_crypt);
-                       ph_control_block(mISDNport->b_addr[i], BF_ENABLE_KEY, mISDNport->b_port[i]->p_m_crypt_key, mISDNport->b_port[i]->p_m_crypt_key_len);
-               }
-               todo: wer startet/stoppt eigentlich den audio-transmit
+failed:
+       mISDNport->b_addr[i] = 0;
+       return(-1);
+}
+
+
+/*
+ * subfunction for bchannel_event
+ * activate request
+ */
+static void _bchannel_activate(struct mISDNport *mISDNport, int i)
+{
+       iframe_t act;
+
+       /* activate bchannel */
+       chan_trace_header(mISDNport, mISDNport->b_port[i], "BCHANNEL activate", DIRECTION_OUT);
+       add_trace("channel", NULL, "%d", i+1+(i>=15));
+       end_trace();
+       act.prim = DL_ESTABLISH | 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);
+}
+
+
+/*
+ * subfunction for bchannel_event
+ * set features
+ */
+static void _bchannel_configure(struct mISDNport *mISDNport, int i)
+{
+       struct PmISDN *port;
+       int addr;
+
+       port = mISDNport->b_port[i];
+       addr = mISDNport->b_addr[i];
+       if (!port)
+       {
+               PERROR("bchannel index i=%d not associated with a port object\n", i);
+               return;
        }
+
+       /* set dsp features */
+       if (port->p_m_txdata)
+               ph_control(mISDNport, port, addr, (port->p_m_txdata)?CMX_TXDATA_ON:CMX_TXDATA_OFF, 0, "DSP-TXDATA", port->p_m_txdata);
+       if (port->p_m_delay)
+               ph_control(mISDNport, port, addr, CMX_DELAY, port->p_m_delay, "DSP-DELAY", port->p_m_delay);
+       if (port->p_m_txvol)
+               ph_control(mISDNport, port, addr, VOL_CHANGE_TX, port->p_m_txvol, "DSP-TXVOL", port->p_m_txvol);
+       if (port->p_m_rxvol)
+               ph_control(mISDNport, port, addr, VOL_CHANGE_RX, port->p_m_rxvol, "DSP-RXVOL", port->p_m_rxvol);
+       if (port->p_m_conf)
+               ph_control(mISDNport, port, addr, CMX_CONF_JOIN, port->p_m_conf, "DSP-CONF", port->p_m_conf);
+       if (port->p_m_echo)
+               ph_control(mISDNport, port, addr, CMX_ECHO_ON, 0, "DSP-ECHO", 1);
+       if (port->p_m_tone)
+               ph_control(mISDNport, port, addr, TONE_PATT_ON, port->p_m_tone, "DSP-TONE", port->p_m_tone);
+       if (port->p_m_rxoff)
+               ph_control(mISDNport, port, addr, CMX_RECEIVE_OFF, 0, "DSP-RXOFF", 1);
+//     if (port->p_m_txmix)
+//             ph_control(mISDNport, port, addr, CMX_MIX_ON, 0, "DSP-MIX", 1);
+       if (port->p_m_dtmf)
+               ph_control(mISDNport, port, addr, DTMF_TONE_START, 0, "DSP-DTMF", 1);
+       if (port->p_m_crypt)
+               ph_control_block(mISDNport, port, addr, BF_ENABLE_KEY, port->p_m_crypt_key, port->p_m_crypt_key_len, "DSP-CRYPT", port->p_m_crypt_key_len);
 }
 
-static void bchannel_deactivate(struct mISDNport *mISDNport, int i)
+/*
+ * subfunction for bchannel_event
+ * deactivate 
+ */
+static void _bchannel_deactivate(struct mISDNport *mISDNport, int i)
 {
        iframe_t dact;
+       int addr;
+       
+       chan_trace_header(mISDNport, mISDNport->b_port[i], "BCHANNEL deactivate", DIRECTION_OUT);
+       add_trace("channel", NULL, "%d", i+1+(i>=15));
+       end_trace();
+       dact.prim = DL_RELEASE | REQUEST; 
+       dact.addr = addr | FLG_MSG_DOWN;
+       dact.dinfo = 0;
+       dact.len = 0;
+       mISDN_write(mISDNdevice, &dact, mISDN_HEADER_LEN+dact.len, TIMEOUT_1SEC);
+}
+
+/*
+ * subfunction for bchannel_event
+ * destroy stack
+ */
+static void _bchannel_destroy(struct mISDNport *mISDNport, int i)
+{
+       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", "%d", mISDNport->b_stid[i]);
+       add_trace("stack", "address", "%d", mISDNport->b_addr[i]);
+       end_trace();
+       /* remove our stack only if set */
+       PDEBUG(DEBUG_BCHANNEL, "free stack (b_addr=0x%x)\n", mISDNport->b_addr[i]);
+       mISDN_clear_stack(mISDNdevice, mISDNport->b_stid[i]);
+       if (mISDNport->b_addr[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;
+}
+
 
-       if (mISDNport->b_state[i] == B_STATE_ACTIVE)
+/*
+bchannel procedure
+------------------
+
+A bchannel goes through the following states in this order:
+
+- B_STATE_IDLE
+No one is using the bchannel.
+It is available and not linked to Port class, nor reserved.
+
+- B_STATE_ACTIVATING
+The bchannel stack is created and an activation request is sent.
+It MAY be linked to Port class, but already unlinked due to Port class removal.
+
+- B_STATE_ACTIVE
+The bchannel is active and cofigured to the Port class needs.
+Also it is linked to a Port class, otherwhise it would be deactivated.
+
+- B_STATE_DEACTIVATING
+The bchannel is in deactivating state, due to deactivation request.
+It may be linked to a Port class, that likes to reactivate it.
+
+- B_STATE_IDLE
+See above.
+After deactivating bchannel, and if not used, the bchannel becomes idle again.
+
+
+A bchannel can have the following events:
+
+- B_EVENT_ACTIVATE
+A bchannel is required by a Port class.
+
+- B_EVENT_ACTIVATED
+The bchannel beomes active.
+
+- B_EVENT_DEACTIVATE
+The bchannel is not required by Port class anymore
+
+- B_EVENT_DEACTIVATED
+The bchannel becomes inactive.
+
+All actions taken on these events depend on the current bchannel's state and if it is linked to a Port class.
+
+*/
+
+/*
+ * process bchannel events
+ * - mISDNport is a pointer to the port's structure
+ * - i is the index of the bchannel
+ * - event is the B_EVENT_* value
+ * - port is the PmISDN class pointer
+ */
+void bchannel_event(struct mISDNport *mISDNport, int i, int event)
+{
+       int state = mISDNport->b_state[i];
+       
+       switch(event)
        {
-               /* reset dsp features */
+               case B_EVENT_ACTIVATE:
+               /* port may not be used by any other bchannel */
                if (mISDNport->b_port[i])
                {
-                       if (mISDNport->b_port[i]->p_m_txdata)
-                       {
-                               PDEBUG(DEBUG_BCHANNEL, "during deactivation, we reset txdata from txdata=%d.\n", mISDNport->b_port[i]->p_m_txdata);
-                               ph_control(mISDNport->b_addr[i], CMX_TXDATA_OFF, 0);
-                       }
-                       if (mISDNport->b_port[i]->p_m_delay)
-                       {
-                               PDEBUG(DEBUG_BCHANNEL, "during deactivation, we reset delay from delay=%d.\n", mISDNport->b_port[i]->p_m_delay);
-                               ph_control(mISDNport->b_addr[i], CMX_JITTER, 0);
-                       }
-                       if (mISDNport->b_port[i]->p_m_txvol)
-                       {
-                               PDEBUG(DEBUG_BCHANNEL, "during deactivation, we reset tx-volume from shift=%d.\n", mISDNport->b_port[i]->p_m_txvol);
-                               ph_control(mISDNport->b_addr[i], VOL_CHANGE_TX, 0);
-                       }
-                       if (mISDNport->b_port[i]->p_m_rxvol)
-                       {
-                               PDEBUG(DEBUG_BCHANNEL, "during deactivation, we reset rx-volume from shift=%d.\n", mISDNport->b_port[i]->p_m_rxvol);
-                               ph_control(mISDNport->b_addr[i], VOL_CHANGE_RX, 0);
-                       }
-                       if (mISDNport->b_port[i]->p_m_conf)
-                       {
-                               PDEBUG(DEBUG_BCHANNEL, "during deactivation, we release conference from conf=%d.\n", mISDNport->b_port[i]->p_m_conf);
-                               ph_control(mISDNport->b_addr[i], CMX_CONF_SPLIT, 0);
-                       }
-                       if (mISDNport->b_port[i]->p_m_echo)
-                       {
-                               PDEBUG(DEBUG_BCHANNEL, "during deactivation, we reset echo from echo=%d.\n", mISDNport->b_port[i]->p_m_echo);
-                               ph_control(mISDNport->b_addr[i], CMX_ECHO_OFF, 0);
-                       }
-                       if (mISDNport->b_port[i]->p_m_tone)
-                       {
-                               PDEBUG(DEBUG_BCHANNEL, "during deactivation, we reset tone from tone=%d.\n", mISDNport->b_port[i]->p_m_tone);
-                               ph_control(mISDNport->b_addr[i], TONE_PATT_OFF, 0);
-                       }
-                       if (mISDNport->b_port[i]->p_m_rxoff)
+                       PERROR("SOFTWARE ERROR: bchannel must not be linked to a Port class\n");
+                       exit(-1);
+               }
+               switch(state)
+               {
+                       case B_STATE_IDLE:
+                       /* create stack and send activation request */
+                       if (_bchannel_create(mISDNport, i))
                        {
-                               PDEBUG(DEBUG_BCHANNEL, "during deactivation, we reset rxoff from rxoff=%d.\n", mISDNport->b_port[i]->p_m_rxoff);
-                               ph_control(mISDNport->b_addr[i], CMX_RECEIVE_ON, 0);
+                               _bchannel_activate(mISDNport, i);
+                               state = B_STATE_ACTIVATING;
                        }
-#if 0
-                       if (mISDNport->b_port[i]->p_m_txmix)
+                       break;
+
+                       case B_STATE_ACTIVATING:
+                       /* do nothing, because it is already activating */
+                       break;
+
+                       case B_STATE_DEACTIVATING:
+                       /* do nothing, because we must wait until we can reactivate */
+                       break;
+
+                       default:
+                       PERROR("Illegal event %d at state %d, please correct.\n", event, state);
+               }
+               break;
+
+               case B_EVENT_ACTIVATED:
+               switch(state)
+               {
+                       case B_STATE_ACTIVATING:
+                       if (mISDNport->b_port[i])
                        {
-                               PDEBUG(DEBUG_BCHANNEL, "during deactivation, we reset txmix from txmix=%d.\n", mISDNport->b_port[i]->p_m_txmix);
-                               ph_control(mISDNport->b_addr[i], CMX_MIX_OFF, 0);
-                       }
-#endif
-                       if (mISDNport->b_port[i]->p_m_dtmf)
+                               /* bchannel is active and used by Port class, so we configure bchannel */
+                               _bchannel_configure(mISDNport, i);
+                               state = B_STATE_ACTIVE;
+                       } else
                        {
-                               PDEBUG(DEBUG_BCHANNEL, "during deactivation, we reset dtmf from dtmf=%d.\n", mISDNport->b_port[i]->p_m_dtmf);
-                               ph_control(mISDNport->b_addr[i], DTMF_TONE_STOP, 0);
+                               /* bchannel is active, but not used anymore (or has wrong stack config), so we deactivate */
+                               _bchannel_deactivate(mISDNport, i);
+                               state = B_STATE_DEACTIVATING;
                        }
-                       if (mISDNport->b_port[i]->p_m_crypt)
+                       break;
+
+                       default:
+                       PERROR("Illegal event %d at state %d, please correct.\n", event, state);
+               }
+               break;
+
+               case B_EVENT_DEACTIVATE:
+               if (!mISDNport->b_port[i])
+               {
+                       PERROR("SOFTWARE ERROR: bchannel must be linked to a Port class\n");
+                       exit(-1);
+               }
+               switch(state)
+               {
+                       case B_STATE_IDLE:
+                       /* bchannel is idle due to an error, so we do nothing */
+                       break;
+
+                       case B_STATE_ACTIVATING:
+                       /* do nothing because we must wait until bchanenl is active before deactivating */
+                       break;
+
+                       case B_STATE_ACTIVE:
+                       /* bchannel is active, so we deactivate */
+                       _bchannel_deactivate(mISDNport, i);
+                       state = B_STATE_DEACTIVATING;
+                       break;
+
+                       case B_STATE_DEACTIVATING:
+                       /* 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_DEACTIVATED:
+               _bchannel_destroy(mISDNport, i);
+               state = B_STATE_IDLE;
+               switch(state)
+               {
+                       case B_STATE_DEACTIVATING:
+                       if (mISDNport->b_port[i])
                        {
-                               PDEBUG(DEBUG_BCHANNEL, "during deactivation, we reset crypt from crypt=%d.\n", mISDNport->b_port[i]->p_m_dtmf);
-                               ph_control(mISDNport->b_addr[i], BF_DISABLE, 0);
+                               /* bchannel is now deactivate, but is requied by Port class, so we reactivate */
+                               if (_bchannel_create(mISDNport, i))
+                               {
+                                       _bchannel_activate(mISDNport, i);
+                                       state = B_STATE_ACTIVATING;
+                               }
                        }
+                       break;
+
+                       default:
+                       PERROR("Illegal event %d at state %d, please correct.\n", event, state);
                }
-               /* deactivate bchannel */
-               PDEBUG(DEBUG_BCHANNEL, "deactivating bchannel (index %d), because currently active.\n", i);
-               dact.prim = DL_RELEASE | REQUEST; 
-               dact.addr = mISDNport->b_addr[i] | FLG_MSG_DOWN;
-               dact.dinfo = 0;
-               dact.len = 0;
-               mISDN_write(mISDNdevice, &dact, mISDN_HEADER_LEN+dact.len, TIMEOUT_1SEC);
-               mISDNport->b_state[i] = B_STATE_DEACTIVATING;
-               return;
+               break;
+
+               default:
+               PERROR("Illegal event %d, please correct.\n", event);
        }
+
+       mISDNport->b_state[i] = state;
 }
 
 
+
+
 /*
  * check for available channel and reserve+set it.
  * give channel number or SEL_CHANNEL_ANY or SEL_CHANNEL_NO
  * give exclusiv flag
  * returns -(cause value) or x = channel x or 0 = no channel
+ * NOTE: no activation is done here
  */
-denke ans aktivieren und deaktivieren
 int PmISDN::seize_bchannel(int channel, int exclusive)
 {
        int i;
@@ -407,32 +712,34 @@ int PmISDN::seize_bchannel(int channel, int exclusive)
        return(-34); /* no free channel */
 
 seize:
+       PDEBUG(DEBUG_BCHANNEL, "PmISDN(%s) seizing bchannel %d (index %d)\n", p_name, channel, i);
+
        /* link Port */
        p_m_mISDNport->b_port[i] = this;
        p_m_b_index = i;
        p_m_b_channel = channel;
        p_m_b_exclusive = exclusive;
-       p_m_b_stid = p_m_mISDNport->b_stid[i];
-       p_m_b_addr = p_m_mISDNport->b_addr[i];
        p_m_jittercheck = 0;
 
        /* reserve channel */
-       if (p_m_b_reserve == 0) // already reserved
+       if (!p_m_b_reserve)
        {
                p_m_b_reserve = 1;
-               mISDNport->b_reserved++;
+               p_m_mISDNport->b_reserved++;
        }
 
-       PDEBUG(DEBUG_BCHANNEL, "PmISDN(%s) seizing bchannel %d (index %d)\n", p_name, channel, i);
-
        return(channel);
 }
 
 /*
  * drop reserved channel and unset it.
+ * deactivation is also done
  */
 void PmISDN::drop_bchannel(void)
 {
+       if (p_m_b_index < 0)
+               return;
+
        /* unreserve channel */
        if (p_m_b_reserve)
                p_m_mISDNport->b_reserved--;
@@ -444,62 +751,12 @@ void PmISDN::drop_bchannel(void)
 
        PDEBUG(DEBUG_BCHANNEL, "PmISDN(%s) dropping bchannel\n", p_name);
 
+       if (p_m_mISDNport->b_state[p_m_b_index] != B_STATE_IDLE)
+               bchannel_event(p_m_mISDNport, p_m_b_index, B_EVENT_DEACTIVATE);
        p_m_mISDNport->b_port[p_m_b_index] = NULL;
        p_m_b_index = -1;
        p_m_b_channel = 0;
        p_m_b_exclusive = 0;
-       p_m_b_addr = 0;
-       p_m_b_stid = 0;
-}
-
-
-/*
- * data is to be transmitted to the remote
- */
-wech void Port::transmit(unsigned char *buffer, int length, int tonelength)
-{
-       /* send tone data to isdn device only if we have data, otherwhise we send nothing */
-       if (tonelength>0 && (p_tone_fh>=0 || p_tone_fetched || p_m_crypt_msg_loops))
-       {
-               unsigned char buf[mISDN_HEADER_LEN+tonelength];
-               iframe_t *frm = (iframe_t *)buf;
-
-               if (p_m_crypt_msg_loops)
-               {
-                       /* send pending message */
-                       int tosend;
-
-                       tosend = p_m_crypt_msg_len - p_m_crypt_msg_current;
-                       if (tosend > newlen)
-                               tosend = newlen;
-                       memcpy(p, p_m_crypt_msg+p_m_crypt_msg_current, tosend);
-                       p_m_crypt_msg_current += tosend;
-                       if (p_m_crypt_msg_current == p_m_crypt_msg_len)
-                       {
-                               p_m_crypt_msg_current = 0;
-                               p_m_crypt_msg_loops--;
-                       }
-               }
-               frm->prim = DL_DATA | REQUEST; 
-               frm->addr = p_m_b_addr | FLG_MSG_DOWN;
-               frm->dinfo = 0;
-               frm->len = tonelength;
-               memcpy(&frm->data.p, buffer, tonelength);
-               mISDN_write(mISDNdevice, frm, mISDN_HEADER_LEN+frm->len, TIMEOUT_1SEC);
-
-               if (p_debug_nothingtosend)
-               {
-                       p_debug_nothingtosend = 0;
-                       PDEBUG((DEBUG_PORT | DEBUG_BCHANNEL), "PmISDN(%s) start sending, because we have tones and/or remote audio.\n", p_name);
-               } 
-       } else
-       {
-               if (!p_debug_nothingtosend)
-               {
-                       p_debug_nothingtosend = 1;
-                       PDEBUG((DEBUG_PORT | DEBUG_BCHANNEL), "PmISDN(%s) stop sending, because we have only silence.\n", p_name);
-               } 
-       }
 }
 
 
@@ -510,38 +767,40 @@ int PmISDN::handler(void)
 {
        struct message *message;
        int elapsed, length;
+       int ret;
+       int inbuffer;
 
        if ((ret = Port::handler()))
                return(ret);
 
-       inbuffer = (p_fromup_buffer_writep - p_fromup_buffer_readp) & FROMUP_BUFFER_MASK
+       inbuffer = (p_m_fromup_buffer_writep - p_m_fromup_buffer_readp) & FROMUP_BUFFER_MASK;
        /* send tone data to isdn device only if we have data */
        if (p_tone_fh>=0 || p_tone_fetched || p_m_crypt_msg_loops || inbuffer)
        {
                /* calculate how much to transmit */
-               if (!p_last_tv.sec)
+               if (!p_last_tv_sec)
                {
-                       elapsed = ISDN_PRELOAD << 3; /* preload for the first time */
+                       elapsed = ISDN_PRELOAD; /* preload for the first time */
                } else
                {
-                       elapsed = 1000 * (now_tv.sec - p_last_tv_sec)
-                               + (now_tv.usec/1000) - p_last_tv_msec;
+                       elapsed = 8000 * (now_tv.tv_sec - p_last_tv_sec)
+                               + 8 * (now_tv.tv_usec/1000 - p_last_tv_msec);
                        /* gap was greater preload, so only fill up to preload level */
-                       if (elapsed > (ISDN_PRELOAD<<3))
+                       if (elapsed > ISDN_PRELOAD)
                        {
-                               elapsed = ISDN_PRELOAD << 3
+                               elapsed = ISDN_PRELOAD;
                        }
                }
                if (elapsed >= ISDN_TRANSMIT)
                {
-                       unsigned char buf[mISDN_HEADER_LEN+(ISDN_PRELOAD<<3)], *p = buf;
+                       unsigned char buf[mISDN_HEADER_LEN+ISDN_PRELOAD], *p = buf;
                        iframe_t *frm = (iframe_t *)buf;
 
-                       p_last_tv_sec = now_tv.sec;
-                       p_last_tv_msec = now_tv.usec/1000;
+                       p_last_tv_sec = now_tv.tv_sec;
+                       p_last_tv_msec = now_tv.tv_usec/1000;
 
                        /* read tones */
-                       length = read_audio(buffer, elapsed);
+                       length = read_audio(p, elapsed);
 
                        /*
                         * get data from up
@@ -555,13 +814,14 @@ int PmISDN::handler(void)
                                if (inbuffer <= length)
                                {
                                        /* clear buffer */
-                                       p_fromup_buffer_readp = p_fromup_buffer_writep;
+                                       p_m_fromup_buffer_readp = p_m_fromup_buffer_writep;
                                        inbuffer = 0;
                                } else
                                {
                                        /* skip what we already have with tones */
-                                       p_fromup_buffer_readp = (p_fromup_buffer_readp + length) & FROMUP_BUFFER_MASK;
+                                       p_m_fromup_buffer_readp = (p_m_fromup_buffer_readp + length) & FROMUP_BUFFER_MASK;
                                        inbuffer -= length;
+                                       p += length;
                                }
                                /* if we have more in buffer, than we send this time */
                                if (inbuffer > (elapsed-length))
@@ -571,8 +831,8 @@ int PmISDN::handler(void)
                                /* now fill up with fromup_buffer */
                                while (inbuffer)
                                {
-                                       *p++ = p_fromup_buffer[p_fromup_buffer_readp];
-                                       p_fromup_buffer_readp = (p_fromup_buffer_readp + 1) & FROMUP_BUFFER_MASK;
+                                       *p++ = p_m_fromup_buffer[p_m_fromup_buffer_readp];
+                                       p_m_fromup_buffer_readp = (p_m_fromup_buffer_readp + 1) & FROMUP_BUFFER_MASK;
                                        inbuffer--;
                                }
                        }
@@ -583,13 +843,17 @@ int PmISDN::handler(void)
                                /* send pending message */
                                int tosend;
 
-                               /* we need full length */
-                               length = elapsed;
-       check!!
+                               /* how much do we have to send */
                                tosend = p_m_crypt_msg_len - p_m_crypt_msg_current;
-                               if (tosend > length)
-                                       tosend = length;
-                               memcpy(buffer, p_m_crypt_msg+p_m_crypt_msg_current, tosend);
+                               if (tosend > elapsed)
+                                       tosend = elapsed;
+
+                               /* our length increases, if less */
+                               if (length < tosend)
+                                       length = tosend;
+
+                               /* copy message (part) to buffer */
+                               memcpy(buf, p_m_crypt_msg+p_m_crypt_msg_current, tosend);
                                p_m_crypt_msg_current += tosend;
                                if (p_m_crypt_msg_current == p_m_crypt_msg_len)
                                {
@@ -598,10 +862,10 @@ int PmISDN::handler(void)
                                }
                        }
                        frm->prim = DL_DATA | REQUEST; 
-                       frm->addr = p_m_b_addr | FLG_MSG_DOWN;
+                       frm->addr = p_m_mISDNport->b_addr[p_m_b_index] | FLG_MSG_DOWN;
                        frm->dinfo = 0;
                        frm->len = length;
-                       memcpy(&frm->data.p, buffer, length);
+                       memcpy(&frm->data.p, buf, length);
                        mISDN_write(mISDNdevice, frm, mISDN_HEADER_LEN+frm->len, TIMEOUT_1SEC);
 
                        if (p_debug_nothingtosend)
@@ -613,7 +877,7 @@ int PmISDN::handler(void)
                }
        } else
        {
-               if (!cwp_debug_nothingtosend)
+               if (!p_debug_nothingtosend)
                {
                        p_debug_nothingtosend = 1;
                        PDEBUG((DEBUG_PORT | DEBUG_BCHANNEL), "PmISDN(%s) stop sending, because we have only silence.\n", p_name);
@@ -649,10 +913,6 @@ void PmISDN::bchannel_receive(iframe_t *frm)
        unsigned char *data_temp;
        unsigned long length_temp;
        struct message *message;
-       struct timeval tv;
-       struct timezone tz;
-       long long jitter_now;
-       int newlen;
        unsigned char *p;
        int l;
        unsigned long cont;
@@ -690,6 +950,9 @@ void PmISDN::bchannel_receive(iframe_t *frm)
                // PDEBUG(DEBUG_PORT, "PmISDN(%s) received a PH_CONTROL INDICATION 0x%x\n", p_name, cont);
                if ((cont&(~DTMF_TONE_MASK)) == DTMF_TONE_VAL)
                {
+                       chan_trace_header(p_m_mISDNport, this, "BCHANNEL control", DIRECTION_IN);
+                       add_trace("DTMF", NULL, "%c", cont & DTMF_TONE_MASK);
+                       end_trace();
                        message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_DTMF);
                        message->param.dtmf = cont & DTMF_TONE_MASK;
                        PDEBUG(DEBUG_PORT, "PmISDN(%s) PH_CONTROL INDICATION  DTMF digit '%c'\n", p_name, message->param.dtmf);
@@ -699,6 +962,9 @@ void PmISDN::bchannel_receive(iframe_t *frm)
                switch(cont)
                {
                        case BF_REJECT:
+                       chan_trace_header(p_m_mISDNport, this, "BCHANNEL control", DIRECTION_IN);
+                       add_trace("DSP-CRYPT", NULL, "error");
+                       end_trace();
                        message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_CRYPT);
                        message->param.crypt.type = CC_ERROR_IND;
                        PDEBUG(DEBUG_PORT, "PmISDN(%s) PH_CONTROL INDICATION  reject of blowfish.\n", p_name);
@@ -706,6 +972,9 @@ void PmISDN::bchannel_receive(iframe_t *frm)
                        break;
 
                        case BF_ACCEPT:
+                       chan_trace_header(p_m_mISDNport, this, "BCHANNEL control", DIRECTION_IN);
+                       add_trace("DSP-CRYPT", NULL, "ok");
+                       end_trace();
                        message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_CRYPT);
                        message->param.crypt.type = CC_ACTBF_CONF;
                        PDEBUG(DEBUG_PORT, "PmISDN(%s) PH_CONTROL INDICATION  accept of blowfish.\n", p_name);
@@ -713,18 +982,20 @@ void PmISDN::bchannel_receive(iframe_t *frm)
                        break;
 
                        case CMX_TX_DATA:
-                       if (!p_m_txdatad)
+                       if (!p_m_txdata)
                        {
                                /* if rx is off, it may happen that fifos send us pending informations, we just ignore them */
                                PDEBUG(DEBUG_BCHANNEL, "PmISDN(%s) ignoring rx data, because 'txdata' is turned off\n", p_name);
                                return;
                        }
                        if (p_record)
-                               record(&(cont+1), frm->len - 4, 1); // from up
+                               record((unsigned char *)(cont+1), frm->len - 4, 1); // from up
                        break;
 
                        default:
-                       PDEBUG(DEBUG_PORT, "PmISDN(%s) PH_CONTROL INDICATION  unknown 0x%x.\n", p_name, cont);
+                       chan_trace_header(p_m_mISDNport, this, "BCHANNEL control", DIRECTION_IN);
+                       add_trace("unknown", NULL, "0x%x", cont);
+                       end_trace();
                }
                return;
        }       
@@ -785,9 +1056,6 @@ void PmISDN::bchannel_receive(iframe_t *frm)
                        message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_DATA);
                        message->param.data.len = (length_temp>sizeof(message->param.data.data))?sizeof(message->param.data.data):length_temp;
                        memcpy(message->param.data.data, data_temp, message->param.data.len);
-                       message->param.data.compressed = 1;
-                       message->param.data.port_id = p_serial;
-                       message->param.data.port_type = p_type;
                        message_put(message);
                        if (length_temp <= sizeof(message->param.data.data))
                                break;
@@ -818,7 +1086,7 @@ 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)
-                               ph_control(p_m_b_addr, p_m_echo?CMX_ECHO_ON:CMX_ECHO_OFF, 0);
+                               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);
        }
 }
 
@@ -846,7 +1114,7 @@ void PmISDN::set_tone(char *dir, char *tone)
                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);
-                       ph_control(p_m_b_addr, TONE_PATT_OFF, 0);
+                       ph_control(p_m_mISDNport, this, p_m_mISDNport->b_addr[p_m_b_index], TONE_PATT_OFF, 0, "DSP-TONE", 0);
                }
                p_m_tone = 0;
                Port::set_tone(dir, tone);
@@ -928,7 +1196,7 @@ void PmISDN::set_tone(char *dir, char *tone)
                PDEBUG(DEBUG_ISDN, "we set tone to id=%d.\n", p_m_tone);
                if (p_m_b_channel)
                        if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
-                               ph_control(p_m_b_addr, p_m_tone?TONE_PATT_ON:TONE_PATT_OFF, p_m_tone);
+                               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);
        }
        /* turn user-space tones off in cases of no tone OR dsp tone */
        Port::set_tone("",NULL);
@@ -948,7 +1216,7 @@ void PmISDN::message_mISDNsignal(unsigned long epoint_id, int message_id, union
                        PDEBUG(DEBUG_BCHANNEL, "we change tx-volume to shift=%d.\n", p_m_txvol);
                        if (p_m_b_channel)
                                if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
-                                       ph_control(p_m_b_addr, VOL_CHANGE_TX, p_m_txvol);
+                                       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);
                }
                if (p_m_rxvol != param->mISDNsignal.rxvol)
                {
@@ -956,7 +1224,7 @@ void PmISDN::message_mISDNsignal(unsigned long epoint_id, int message_id, union
                        PDEBUG(DEBUG_BCHANNEL, "we change rx-volume to shift=%d.\n", p_m_rxvol);
                        if (p_m_b_channel)
                                if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
-                                       ph_control(p_m_b_addr, VOL_CHANGE_RX, p_m_rxvol);
+                                       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);
                }
                break;
 
@@ -969,7 +1237,7 @@ void PmISDN::message_mISDNsignal(unsigned long epoint_id, int message_id, union
                        PDEBUG(DEBUG_BCHANNEL, "we change conference to conf=%d.\n", p_m_conf);
                        if (p_m_b_channel)
                                if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
-                                       ph_control(p_m_b_addr, (p_m_conf)?CMX_CONF_JOIN:CMX_CONF_SPLIT, p_m_conf);
+                                       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);
                }
                /* we must set, even if currently tone forbids conf */
                p_m_conf = param->mISDNsignal.conf;
@@ -981,48 +1249,20 @@ void PmISDN::message_mISDNsignal(unsigned long epoint_id, int message_id, union
                {
                        p_m_calldata = param->mISDNsignal.calldata;
                        PDEBUG(DEBUG_BCHANNEL, "we change to calldata=%d.\n", p_m_calldata);
-                       auch senden
                }
                break;
                
-#if 0
-               case mISDNSIGNAL_NODATA:
-               p_m_nodata = param->mISDNsignal.nodata;
-               if (p_m_txmix == p_m_nodata) /* txmix != !nodata */
-               {
-                       p_m_txmix = !p_m_nodata;
-                       PDEBUG(DEBUG_BCHANNEL, "we change mix mode to txmix=%d (nodata=%d).\n", p_m_txmix, p_m_nodata);
-                       if (p_m_b_channel)
-                               if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
-                                       ph_control(p_m_b_addr, p_m_txmix?CMX_MIX_ON:CMX_MIX_OFF, 0);
-               }
-               break;
-#endif
-
-#if 0
-               case mISDNSIGNAL_RXOFF:
-               if (p_m_rxoff != param->mISDNsignal.rxoff)
-               {
-                       p_m_rxoff = param->mISDNsignal.rxoff;
-                       PDEBUG(DEBUG_BCHANNEL, "we change receive mode to rxoff=%d.\n", p_m_rxoff);
-                       if (p_m_b_channel)
-                               if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
-                                       ph_control(p_m_b_addr, p_m_rxoff?CMX_RECEIVE_OFF:CMX_RECEIVE_ON, 0);
-               }
-               break;
-
-               case mISDNSIGNAL_DTMF:
-               if (p_m_dtmf != param->mISDNsignal.dtmf)
+               case mISDNSIGNAL_DELAY:
+               if (p_m_delay != param->mISDNsignal.delay)
                {
-                       p_m_dtmf = param->mISDNsignal.dtmf;
-                       PDEBUG(DEBUG_BCHANNEL, "we change dtmf mode to dtmf=%d.\n", p_m_dtmf);
+                       p_m_delay = param->mISDNsignal.delay;
+                       PDEBUG(DEBUG_BCHANNEL, "we change delay mode to delay=%d.\n", p_m_delay);
                        if (p_m_b_channel)
                                if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
-                                       ph_control(p_m_b_addr, p_m_dtmf?DTMF_TONE_START:DTMF_TONE_STOP, 0);
+                                       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);
                }
                break;
 
-#endif
                default:
                PERROR("PmISDN(%s) unsupported signal message %d.\n", p_name, param->mISDNsignal.message);
        }
@@ -1051,7 +1291,7 @@ void PmISDN::message_crypt(unsigned long epoint_id, int message_id, union parame
                PDEBUG(DEBUG_BCHANNEL, "we set encryption to crypt=%d. (0 means OFF)\n", p_m_crypt);
                if (p_m_b_channel)
                        if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
-                               ph_control_block(p_m_b_addr, p_m_crypt?BF_ENABLE_KEY:BF_DISABLE, p_m_crypt_key, p_m_crypt_key_len);
+                               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);
                break;
 
                case CC_DACT_REQ:            /* deactivate session encryption */
@@ -1082,7 +1322,7 @@ void PmISDN::message_crypt(unsigned long epoint_id, int message_id, union parame
                if (p_m_txmix)
                {
                        PDEBUG(DEBUG_BCHANNEL, "for sending CR_MESSAGE_REQ, we reset txmix from txmix=%d.\n", p_m_txmix);
-                       ph_control(p_m_b_addr, CMX_MIX_OFF, 0);
+                       ph_control(p_m_mISDNport, this, p_mISDNport->b_addr[p_m_b_index], CMX_MIX_OFF, 0, "DSP-TXMIX", 0);
                }
 #endif
                break;
@@ -1103,6 +1343,10 @@ int PmISDN::message_epoint(unsigned long epoint_id, int message_id, union parame
 
        switch(message_id)
        {
+               case MESSAGE_DATA: /* tx-data from upper layer */
+               txfromup(param->data.data, param->data.len);
+               return(1);
+
                case MESSAGE_mISDNSIGNAL: /* user command */
                PDEBUG(DEBUG_ISDN, "PmISDN(%s) received special ISDN SIGNAL %d.\n", p_name, param->mISDNsignal.message);
                message_mISDNsignal(epoint_id, message_id, param);
@@ -1119,14 +1363,6 @@ int PmISDN::message_epoint(unsigned long epoint_id, int message_id, union parame
 
 
 /*
- * transmit function for data to mISDN b-channel
- */
-void Port::transmit(unsigned char *buffer, int length)
-{
-}
-
-
-/*
  * main loop for processing messages from mISDN device
  */
 int mISDN_handler(void)
@@ -1151,57 +1387,61 @@ int mISDN_handler(void)
                while(i < mISDNport->b_num)
                {
                        isdnport=mISDNport->b_port[i];
-                       /* call bridges in user space OR crypto OR recording */
-                       if (isdnport->p_m_calldata || isdnport->p_m_crypt_msg_loops || isdnport->p_m_crypt_listen || isdnport->p_record)
+                       if (isdnport)
                        {
-                               /* rx IS required */
-                               if (isdnport->p_m_rxoff)
+                               /* call bridges in user space OR crypto OR recording */
+                               if (isdnport->p_m_calldata || isdnport->p_m_crypt_msg_loops || isdnport->p_m_crypt_listen || isdnport->p_record)
                                {
-                                       /* 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(isdnport->p_m_b_addr, CMX_RECEIVE_ON, 0);
-                                       return(1);
-                               }
-                       } else
-                       {
-                               /* rx NOT required */
-                               if (!isdnport->p_m_rxoff)
+                                       /* 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
                                {
-                                       /* 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(isdnport->p_m_b_addr, CMX_RECEIVE_OFF, 0);
-                                       return(1);
+                                       /* rx NOT required */
+                                       if (!isdnport->p_m_rxoff)
+                                       {
+                                               /* turn off RX */
+                                               isdnport->p_m_rxoff = 1;
+                                               PDEBUG(DEBUG_BCHANNEL, "%s: receive data is not required, so we turn them off\n");
+                                               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);
+                                       }
                                }
-                       }
-                       /* recordin */
-                       if (isdnport->p_record)
-                       {
-                               /* txdata IS required */
-                               if (!isdnport->p_m_txdata)
+                               /* recording */
+                               if (isdnport->p_record)
                                {
-                                       /* 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(isdnport->p_m_b_addr, CMX_TXDATA_ON, 0);
-                                       return(1);
-                               }
-                       } else
-                       {
-                               /* txdata NOT required */
-                               if (isdnport->p_m_txdata)
+                                       /* 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
                                {
-                                       /* 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(isdnport->p_m_b_addr, CMX_TXDATA_OFF, 0);
-                                       return(1);
+                                       /* txdata NOT required */
+                                       if (isdnport->p_m_txdata)
+                                       {
+                                               /* turn off RX */
+                                               isdnport->p_m_txdata = 0;
+                                               PDEBUG(DEBUG_BCHANNEL, "%s: transmit data is not required, so we turn them off\n");
+                                               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);
+                                       }
                                }
+                       }
                        i++;
                }
 #if 0
@@ -1234,6 +1474,8 @@ int mISDN_handler(void)
                                        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);
                        }
                }
@@ -1330,23 +1572,28 @@ int mISDN_handler(void)
                                case MGR_SHORTSTATUS | CONFIRM:
                                switch(frm->dinfo) {
                                        case SSTATUS_L1_ACTIVATED:
-                                       PDEBUG(DEBUG_ISDN, "Received SSTATUS_L1_ACTIVATED for port %d (%s).\n", mISDNport->portnum, mISDNport->ifport->interface->name);
+                                       l1l2l3_trace_header(mISDNport, NULL, PH_ACTIVATE | (frm->prim & 0x3), DIRECTION_IN);
+                                       end_trace();
                                        goto ss_act;
                                        case SSTATUS_L1_DEACTIVATED:
-                                       PDEBUG(DEBUG_ISDN, "Received SSTATUS_L1_DEACTIVATED for port %d (%s).\n", mISDNport->portnum, mISDNport->ifport->interface->name);
+                                       l1l2l3_trace_header(mISDNport, NULL, PH_DEACTIVATE | (frm->prim & 0x3), DIRECTION_IN);
+                                       end_trace();
                                        goto ss_deact;
                                        case SSTATUS_L2_ESTABLISHED:
-                                       PDEBUG(DEBUG_ISDN, "Received SSTATUS_L2_ESTABLISHED for port %d (%s).\n", mISDNport->portnum, mISDNport->ifport->interface->name);
+                                       l1l2l3_trace_header(mISDNport, NULL, DL_ESTABLISH | (frm->prim & 0x3), DIRECTION_IN);
+                                       end_trace();
                                        goto ss_estab;
                                        case SSTATUS_L2_RELEASED:
-                                       PDEBUG(DEBUG_ISDN, "Received SSTATUS_L2_RELEASED for port %d (%s).\n", mISDNport->portnum, mISDNport->ifport->interface->name);
+                                       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:
-                               PDEBUG(DEBUG_ISDN, "Received PH_ACTIVATED for port %d (%s).\n", mISDNport->portnum, mISDNport->ifport->interface->name);
+                               l1l2l3_trace_header(mISDNport, NULL, frm->prim, DIRECTION_IN);
+                               end_trace();
                                if (mISDNport->ntmode)
                                {
                                        mISDNport->l1link = 1;
@@ -1360,7 +1607,8 @@ int mISDN_handler(void)
 
                                case PH_DEACTIVATE | CONFIRM:
                                case PH_DEACTIVATE | INDICATION:
-                               PDEBUG(DEBUG_ISDN, "Received PH_DEACTIVATED for port %d (%s).\n", mISDNport->portnum, mISDNport->ifport->interface->name);
+                               l1l2l3_trace_header(mISDNport, NULL, frm->prim, DIRECTION_IN);
+                               end_trace();
                                if (mISDNport->ntmode)
                                {
                                        mISDNport->l1link = 0;
@@ -1379,11 +1627,10 @@ int mISDN_handler(void)
 
                                case DL_ESTABLISH | INDICATION:
                                case DL_ESTABLISH | CONFIRM:
-//                             PDEBUG(DEBUG_ISDN, "addr 0x%x established data link (DL) TE portnum=%d (DL_ESTABLISH)\n", frm->addr, mISDNport->portnum);
+                               l1l2l3_trace_header(mISDNport, NULL, frm->prim, DIRECTION_IN);
+                               end_trace();
                                if (!mISDNport->ntmode) break; /* !!!!!!!!!!!!!!!! */
                                ss_estab:
-//                             if (mISDNport->ntmode)
-//                                     break;
                                if (mISDNport->l2establish)
                                {
                                        mISDNport->l2establish = 0;
@@ -1394,11 +1641,10 @@ int mISDN_handler(void)
 
                                case DL_RELEASE | INDICATION:
                                case DL_RELEASE | CONFIRM:
-//                             PDEBUG(DEBUG_ISDN, "addr 0x%x released data link (DL) TE portnum=%d (DL_RELEASE)\n", frm->addr, mISDNport->portnum);
+                               l1l2l3_trace_header(mISDNport, NULL, frm->prim, DIRECTION_IN);
+                               end_trace();
                                if (!mISDNport->ntmode) break; /* !!!!!!!!!!!!!!!! */
                                ss_rel:
-//                             if (mISDNport->ntmode)
-//                                     break;
                                mISDNport->l2link = 0;
                                if (mISDNport->ptp)
                                {
@@ -1485,11 +1731,7 @@ int mISDN_handler(void)
                                        PERROR("unhandled b-establish (address 0x%x).\n", frm->addr);
                                        break;
                                }
-                               mISDNport->b_state[i] = B_STATE_ACTIVE;
-                               if (!mISDNport->b_port[i])
-                                       bchannel_deactivate(mISDNport, i);
-                               else
-                                       bchannel_activate(mISDNport, i);
+                               bchannel_event(mISDNport, i, B_EVENT_ACTIVATED);
                                break;
 
                                case PH_DEACTIVATE | INDICATION:
@@ -1509,11 +1751,7 @@ int mISDN_handler(void)
                                        PERROR("unhandled b-release (address 0x%x).\n", frm->addr);
                                        break;
                                }
-                               mISDNport->b_state[i] = B_STATE_IDLE;
-                               if (mISDNport->b_port[i])
-                                       bchannel_activate(mISDNport, i);
-                               else
-                                       bchannel_deactivate(mISDNport, i);
+                               bchannel_event(mISDNport, i, B_EVENT_DEACTIVATED);
                                break;
                        }
                        break;
@@ -1538,7 +1776,7 @@ int mISDN_handler(void)
 /*
  * global function to add a new card (port)
  */
-struct mISDNport *mISDN_port_open(int port, int ptp, int ptmp)
+struct mISDNport *mISDNport_open(int port, int ptp, int ptmp)
 {
        int ret;
        unsigned char buff[1025];
@@ -1546,14 +1784,12 @@ struct mISDNport *mISDN_port_open(int port, int ptp, int ptmp)
        stack_info_t *stinf;
        struct mISDNport *mISDNport, **mISDNportp;
        int i, cnt;
-       layer_info_t li;
 //     interface_info_t ii;
        net_stack_t *nst;
        manager_t *mgr;
-       mISDN_pid_t pid;
+       layer_info_t li;
        int pri = 0;
        int nt = 0;
-       iframe_t dact;
 
        /* open mISDNdevice if not already open */
        if (mISDNdevice < 0)
@@ -1710,6 +1946,7 @@ struct mISDNport *mISDN_port_open(int port, int ptp, int ptmp)
        while(i < stinf->childcnt)
        {
                mISDNport->b_stid[i] = stinf->child[i];
+               mISDNport->b_state[i] = B_STATE_IDLE;
                PDEBUG(DEBUG_ISDN, "b_stid[%d] = 0x%x.\n", i, mISDNport->b_stid[i]);
                i++;
        }
@@ -1837,70 +2074,16 @@ struct mISDNport *mISDN_port_open(int port, int ptp, int ptmp)
 
        PDEBUG(DEBUG_BCHANNEL, "using 'mISDN_dsp.o' module\n");
 
-       /* add all bchannel layers */
-       i = 0;
-       while(i < mISDNport->b_num)
-       {
-               /* create new layer */
-               PDEBUG(DEBUG_BCHANNEL, "creating 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 closeport;
-               }
-               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);
-                       mISDNport->b_addr[i] = 0;
-//                     mISDNport->b_addr_low[i] = 0;
-                       goto closeport;
-               }
-               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;
-               /* deactivate bchannel if already enabled due to crash */
-               PDEBUG(DEBUG_BCHANNEL, "deactivating bchannel (index %d) as a precaution.\n", i);
-               dact.prim = DL_RELEASE | REQUEST; 
-               dact.addr = mISDNport->b_addr[i] | FLG_MSG_DOWN;
-               dact.dinfo = 0;
-               dact.len = 0;
-               mISDN_write(mISDNdevice, &dact, mISDN_HEADER_LEN+dact.len, TIMEOUT_1SEC);
-
-               i++;
-       }
-       PDEBUG(DEBUG_ISDN, "- port %d %s (%s) %d b-channels\n", mISDNport->portnum, (mISDNport->ntmode)?"NT-mode":"TE-mode", (mISDNport->ptp)?"Point-To-Point":"Multipoint", mISDNport->b_num);
-       printlog("opening port %d %s (%s) %d b-channels\n", mISDNport->portnum, (mISDNport->ntmode)?"NT-mode":"TE-mode", (mISDNport->ptp)?"Point-To-Point":"Multipoint", mISDNport->b_num);
+       start_trace(mISDNport->portnum,
+                   mISDNport->ifport->interface,
+                   NULL,
+                   NULL,
+                   DIRECTION_NONE,
+                   CATEGORY_CH,
+                   0,
+                   "PORT (open)");
+       add_trace("channels", NULL, "%d", mISDNport->b_num);
+       end_trace();
        return(mISDNport);
 }
 
@@ -1922,7 +2105,7 @@ void mISDNport_close(struct mISDNport *mISDNport)
 {
        struct mISDNport **mISDNportp;
        class Port *port;
-       classs PmISDN *pmISDN;
+       class PmISDN *isdnport;
        net_stack_t *nst;
        unsigned char buf[32];
        int i;
@@ -1933,29 +2116,34 @@ void mISDNport_close(struct mISDNport *mISDNport)
        {
                if ((port->p_type&PORT_CLASS_MASK) == PORT_CLASS_mISDN)
                {
-                       pmISDN = (class PmISDN)*port;
-                       if (pmISDN->p_m_mISDNport)
+                       isdnport = (class PmISDN *)port;
+                       if (isdnport->p_m_mISDNport)
                        {
-                               PDEBUG(DEBUG_ISDN, "port %s uses mISDNport %d, destroying it.\n", pnISDN->p_name, mISDNport->portnum);
-                               delete pmISDN;
+                               PDEBUG(DEBUG_ISDN, "port %s uses mISDNport %d, destroying it.\n", isdnport->p_name, mISDNport->portnum);
+                               delete isdnport;
                        }
                }
                port = port->next;
        }
 
-       printlog("closing port %d\n", mISDNport->portnum);
+       start_trace(mISDNport->portnum,
+                   mISDNport->ifport->interface,
+                   NULL,
+                   NULL,
+                   DIRECTION_NONE,
+                   CATEGORY_CH,
+                   0,
+                   "PORT (close)");
+       end_trace();
 
        /* free bchannels */
        i = 0;
        while(i < mISDNport->b_num)
        {
-               bchannel_deactivate(mISDNport, i);
-               PDEBUG(DEBUG_BCHANNEL, "freeing %s port %d bchannel (index %d).\n", (mISDNport->ntmode)?"NT":"TE", mISDNport->portnum, i);
                if (mISDNport->b_stid[i])
                {
-                       mISDN_clear_stack(mISDNdevice, mISDNport->b_stid[i]);
-                       if (mISDNport->b_addr[i])
-                               mISDN_write_frame(mISDNdevice, buf, mISDNport->b_addr[i] | FLG_MSG_DOWN, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
+                       _bchannel_destroy(mISDNport, i);
+                       PDEBUG(DEBUG_BCHANNEL, "freeing %s port %d bchannel (index %d).\n", (mISDNport->ntmode)?"NT":"TE", mISDNport->portnum, i);
                }
                i++;
        }
@@ -2196,3 +2384,31 @@ void mISDN_port_info(void)
 }
 
 
+/*
+ * enque data from upper buffer
+ */
+void PmISDN::txfromup(unsigned char *data, int length)
+{
+       int avail;
+       /* no data */
+       if (!length)
+               return;
+
+       /* get free samples in buffer */
+       avail = ((p_m_fromup_buffer_readp - p_m_fromup_buffer_writep - 1) & FROMUP_BUFFER_MASK);
+       if (avail < length)
+       {
+               PDEBUG(DEBUG_PORT, "Port(%d): fromup_buffer overflows, this shall not happen under normal conditions\n", p_serial);
+               return;
+       }
+
+       /* write data to buffer and return */
+       while(length)
+       {
+               p_m_fromup_buffer[p_m_fromup_buffer_writep] = *data++;
+               p_m_fromup_buffer_writep = (p_m_fromup_buffer_writep + 1) & FROMUP_BUFFER_MASK;
+               length--;
+       }
+       return; // must return, because length is 0
+}
+