I take the line on my TA connected with my isdn card in NT role and ...

*CLI>     -- New DLC (TEI=0) accepted on interface visdn0
    -- poll timeout = -1
q931 visdn0:TEI[0]: DLC autorelease timer stopped
q931 visdn0:TEI[0]: DL-ESTABLISH-INDICATION
q931 visdn0:TEI[0]: DLC autorelease timer stopped
    -- poll timeout = -1
q931 visdn0:TEI[0]: DLC autorelease timer stopped
q931 visdn0:TEI[0]: Received message:
q931 <-  call reference = 17.I (len 1)
q931 <-  message_type = SETUP (5)
q931 visdn0:TEI[0]: DLC autorelease timer stopped
q931 visdn0:CALL[17.I]: Got SETUP
q931 <-  VL IE 1 ===> 4 (Bearer Capability) length=(3)
q931 <-    Coding Standard = CCITT (0)
q931 <-    Information Transfer Capability = Speech (0)
q931 <-    Transfer mode = Circuit (0)
q931 <-    Information Transfer Rate = 64 kbps (16)
q931 <-    User information layer 1 protocol = g.711 a-law (3)
q931 <-  VL IE 2 ===> 24 (Channel Identification) length=(1)
Jan 16 15:37:15 ERROR[6276]: libq931:0 : Channel Identification: IE specifies 
any channel with no alternative, is this valid?
Jan 16 15:37:15 WARNING[6276]: libq931:0 : IE has content errors (8b)
q931 <-  VL IE 3 ===> 108 (Calling Party Number) length=(10)
q931 <-    Type of number = National (2)
q931 <-    Numbering plan = ISDN Telephony (1)
q931 <-    Presentation indicator = Presentation allowed (0)
q931 <-    Screening indicator = User provided, not screened (0)
q931 <-    Number = 51538710
q931 visdn0:TEI[0]: DLC autorelease timer stopped
q931 visdn0:CALL[17.I]: Sending message:
q931 ->  message type: STATUS (125)
q931 ->  VL IE 0 ===> 8 (Cause) -- length 2
q931 ->    Coding standard = CCITT (0)
q931 ->    Location = Private network serving local user (1)
q931 ->    Cause value = Invalid information element contents (100)
q931
q931 visdn0:TEI[0]: Releasing message
q931 visdn0:CALL[17.I]: No channel identification IE, assuming any channel 
available
q931 visdn0:CALL[17.I]: N0_NULL_STATE ==to==> N1_CALL_INITIATED
q931
q931 visdn0:TEI[0]: Releasing message
    -- poll timeout = -1
    -- visdn_q931_setup_indication
    -- poll timeout = -1
q931 visdn0:CALL[17.I]: MORE-INFO-REQ
q931 visdn0:CALL[17.I]: call.c:1340 Timer T302 started
q931 visdn0:TEI[0]: DLC autorelease timer stopped
q931 visdn0:CALL[17.I]: Sending message:
q931 ->  message type: SETUP ACKNOWLEDGE (13)
q931 ->  VL IE 0 ===> 24 (Channel Identification) -- length 1
q931 ->    Interface id = Implicit (0)
q931 ->    Interface type = Basic (0)
q931 ->    Pref/Excl = Exclusive (1)
q931 ->    D channel ident = Is not D channel (0)
q931 ->    Coding standard = CCITT (0)
q931 ->    Channels = B1
q931 ->  VL IE 1 ===> 30 (Progress Indicator) -- length 2
q931 ->    Coding standard = CCITT (0)
q931 ->    Location = Private network serving local user (1)
q931 ->    Description = In-band information or appropriate pattern now 
available (8)
q931
q931 visdn0:TEI[0]: Releasing message
q931 visdn0:CALL[17.I]: N1_CALL_INITIATED ==to==> N2_OVERLAP_SENDING
    -- poll timeout = 12000
    -- visdn_q931_connect_channel
    -- Connecting streamport to chan 
'000002' (/sys/devices/pci0000:00/0000:00:1e.0/0000:01:00.0/st0/B1)
    -- visdn_q931_start_tone
    -- visdn_indicate 7
    -- poll timeout = 12000
    -- Executing VISDNOverlapDial("VISDN/visdn0/17.I", "") in new stack
q931 visdn0:TEI[0]: DLC autorelease timer stopped
q931 visdn0:TEI[0]: Received message:
q931 <-  call reference = 17.I (len 1)
q931 <-  message_type = STATUS (125)
q931 visdn0:CALL[17.I]: Got STATUS
q931 <-  VL IE 1 ===> 8 (Cause) length=(2)
q931 <-    Coding standard = CCITT (0)
q931 <-    Location = User (0)
q931 <-    Cause value = Mandatory information element is missing (96)
q931 <-  VL IE 2 ===> 20 (Call State) length=(1)
q931 <-    Coding standard = CCITT (0)
q931 <-    State value = 1_CALL_INITIATED (1)
q931 visdn0:CALL[17.I]: call.c:403 Timer T301 stopped
q931 visdn0:CALL[17.I]: call.c:404 Timer T302 stopped
q931 visdn0:CALL[17.I]: call.c:405 Timer T303 stopped
q931 visdn0:CALL[17.I]: call.c:406 Timer T304 stopped
q931 visdn0:CALL[17.I]: call.c:407 Timer T305 stopped
q931 visdn0:CALL[17.I]: call.c:408 Timer T306 stopped
q931 visdn0:CALL[17.I]: call.c:409 Timer T308 stopped
q931 visdn0:CALL[17.I]: call.c:410 Timer T309 stopped
q931 visdn0:CALL[17.I]: call.c:411 Timer T310 stopped
q931 visdn0:CALL[17.I]: call.c:412 Timer T312 stopped
q931 visdn0:CALL[17.I]: call.c:413 Timer T313 stopped
q931 visdn0:CALL[17.I]: call.c:414 Timer T314 stopped
q931 visdn0:CALL[17.I]: call.c:415 Timer T316 stopped
q931 visdn0:CALL[17.I]: call.c:416 Timer T318 stopped
q931 visdn0:CALL[17.I]: call.c:417 Timer T319 stopped
q931 visdn0:CALL[17.I]: call.c:418 Timer T320 stopped
q931 visdn0:CALL[17.I]: call.c:419 Timer T321 stopped
q931 visdn0:CALL[17.I]: call.c:420 Timer T322 stopped
q931 visdn0:TEI[0]: DLC autorelease timer stopped
q931 visdn0:CALL[17.I]: Sending message:
q931 ->  message type: RELEASE (77)
q931 ->  VL IE 0 ===> 8 (Cause) -- length 3
q931 ->    Coding standard = CCITT (0)
q931 ->    Location = Private network serving local user (1)
q931 ->    Cause value = Message not compatible with call state (101)
q931
q931 visdn0:TEI[0]: Releasing message
q931 visdn0:CALL[17.I]: call.c:5340 Timer T308 started
q931 visdn0:CALL[17.I]: N2_OVERLAP_SENDING ==to==> N19_RELEASE_REQUEST
q931
q931 visdn0:TEI[0]: Releasing message
    -- poll timeout = 4000
    -- visdn_q931_status_indication
    -- visdn_q931_release_indication
Segmentation fault


in /var/log/messages:
Jan 16 15:37:15 linux kernel: lapd: visdn0 received u-frame
Jan 16 15:37:15 linux kernel: lapd: visdn0 received u-frame SABME
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=0 V(R)=0 
V(A)=0: 
/root/benvenuti/isdn--devel--0.1--patch-457/modules/lapd/datalink.c:1531 
T203 START
Jan 16 15:37:15 linux kernel: lapd: visdn0 Changed state from 4_TEI_ASSIGNED 
to 7_LINK_CONNECTION_ESTABLISHED
Jan 16 15:37:15 linux kernel: lapd: visdn0 DL-ESTABLISH-INDICATION: Multiple 
frame mode established
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=0 V(R)=0 V(A)=0: Received 
i-frame N(S)=0 N(R)=0
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=0 V(R)=1 V(A)=0: Transmitting 
s-frame RR N(R)=1
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=0 V(R)=1 
V(A)=0: /root/benvenuti/isdn--devel--0.1--patch-457/modules/lapd/datalink.c:889 
T200 STOP
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=0 V(R)=1 
V(A)=0: /root/benvenuti/isdn--devel--0.1--patch-457/modules/lapd/datalink.c:890 
T203 START
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=0 V(R)=1 V(A)=0: Queueing 
i-frame
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=0 V(R)=1 V(A)=0: Transmitting 
i-frame N(S)=0
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=0 V(R)=1 
V(A)=0: /root/benvenuti/isdn--devel--0.1--patch-457/modules/lapd/datalink.c:353 
T200 START
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=0 V(R)=1 
V(A)=0: /root/benvenuti/isdn--devel--0.1--patch-457/modules/lapd/datalink.c:354 
T203 STOP
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=1 V(R)=1 V(A)=0: Queueing 
i-frame
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=1 V(R)=1 V(A)=0: Transmitting 
i-frame N(S)=1
Jan 16 15:37:15 linux kernel:
Jan 16 15:37:15 linux kernel: visnd_chan_enable(000014)
Jan 16 15:37:15 linux kernel: visnd_chan_enable(000002)
Jan 16 15:37:15 linux kernel: hfc-pci: pci-0000:01:00.0:st:chan[B1] channel 
opened.
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=2 V(R)=1 V(A)=0: Received 
s-frame RR N(R)=1
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=2 V(R)=1 V(A)=0: received ack 
for frames from 0 to 1-1
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=2 V(R)=1 V(A)=0: peer acked 
frame 0
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=2 V(R)=1 
V(A)=1: 
/root/benvenuti/isdn--devel--0.1--patch-457/modules/lapd/datalink.c:1013 
T200 START
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=2 V(R)=1 V(A)=1: Received 
i-frame N(S)=1 N(R)=1
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=2 V(R)=2 V(A)=1: Transmitting 
s-frame RR N(R)=2
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=2 V(R)=2 V(A)=1: Queueing 
i-frame
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=2 V(R)=2 V(A)=1: Transmitting 
i-frame N(S)=2
Jan 16 15:37:15 linux kernel: lapd: visdn0 lapd_release()
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=3 V(R)=2 
V(A)=1: 
/root/benvenuti/isdn--devel--0.1--patch-457/modules/lapd/datalink.c:1794 
T200 START
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=3 V(R)=2 
V(A)=1: 
/root/benvenuti/isdn--devel--0.1--patch-457/modules/lapd/datalink.c:1795 
T203 STOP
Jan 16 15:37:15 linux kernel: lapd: visdn0 Changed state from 
7_LINK_CONNECTION_ESTABLISHED to 6_AWAITING_RELEASE
Jan 16 15:37:15 linux kernel: lapd: visdn0 lapd_release()
Jan 16 15:37:15 linux kernel: lapd: visdn0 lapd_sock_destruct()
Jan 16 15:37:15 linux kernel: visnd_chan_disable(000014)
Jan 16 15:37:15 linux kernel: visnd_chan_disable(000002)
Jan 16 15:37:15 linux kernel: visnd_chan_disable(000002)
Jan 16 15:37:15 linux kernel: visnd_chan_disable(000014)
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=3 V(R)=2 V(A)=1: Received 
s-frame RR N(R)=3
Jan 16 15:37:15 linux kernel: lapd: visdn0 V(S)=3 V(R)=2 V(A)=1: Received 
i-frame N(S)=2 N(R)=3
Jan 16 15:37:16 linux kernel: lapd: visdn0 V(S)=3 V(R)=2 V(A)=1: T200
Jan 16 15:37:16 linux kernel: lapd: visdn0 V(S)=3 V(R)=2 
V(A)=1: 
/root/benvenuti/isdn--devel--0.1--patch-457/modules/lapd/datalink.c:1916 
T200 START
Jan 16 15:37:16 linux kernel: lapd: visdn0 received u-frame
Jan 16 15:37:16 linux kernel: lapd: visdn0 received u-frame DM
Jan 16 15:37:16 linux kernel: lapd: visdn0 V(S)=3 V(R)=2 
V(A)=1: 
/root/benvenuti/isdn--devel--0.1--patch-457/modules/lapd/datalink.c:1484 
T200 STOP
Jan 16 15:37:16 linux kernel: lapd: visdn0 Changed state from 
6_AWAITING_RELEASE to 4_TEI_ASSIGNED
Jan 16 15:37:16 linux kernel: lapd: visdn0 DL-RELEASE-CONFIRM: Multiple frame 
mode released
Jan 16 15:37:16 linux kernel: lapd: visdn0 Scheduling unhash
Jan 16 15:37:17 linux kernel: lapd: visdn0 Unhash timer
Jan 16 15:37:17 linux kernel: lapd: visdn0 lapd_sock_destruct()

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