SIPNET vs Asterisk + Dahdi

Дебаг до падения:

< Protocol Discriminator: Q.931 (8)  len=19
< TEI=0 Call Ref: len= 2 (reference 2873/0xB39) (Sent from originator)
< Message Type: SETUP (5)
< [04 03 80 90 a3]
< Bearer Capability (len= 5) [ Ext: 1  Coding-Std: 0  Info transfer capability: Speech (0)
<                              Ext: 1  Trans mode/rate: 64kbps, circuit-mode (16)
<                                User information layer 1: A-Law (35)
< [18 03 a9 83 81]
< Channel ID (len= 5) [ Ext: 1  IntID: Implicit  Other(PRI)  Spare: 0  Exclusive  Dchan: 0
<                       ChanSel: As indicated in following octets
<                       Ext: 1  Coding: 0  Number Specified  Channel Type: 3
<                       Ext: 1  Channel: 1 Type: NET]
< [7d 02 91 81]
< IE: High-layer Compatibility (len = 4)
-- Making new call for cref 2873
Received message for call 0xb544bc28 on link 0xb545b894 TEI/SAPI 0/0
-- Processing Q.931 Call Setup
-- Processing IE 4 (cs0, Bearer Capability)
-- Processing IE 24 (cs0, Channel Identification)
-- Processing IE 125 (cs0, High-layer Compatibility)
q931.c:8281 post_handle_q931_message: Call 2873 enters state 6 (Call Present).  Hold state: Idle
q931.c:5552 q931_setup_ack: Call 2873 enters state 25 (Overlap Receiving).  Hold state: Idle

> DL-DATA request
> Protocol Discriminator: Q.931 (8)  len=14
> TEI=0 Call Ref: len= 2 (reference 2873/0xB39) (Sent to originator)
> Message Type: SETUP ACKNOWLEDGE (13)
TEI=0 Transmitting N(S)=10, window is open V(A)=10 K=7

> Protocol Discriminator: Q.931 (8)  len=14
> TEI=0 Call Ref: len= 2 (reference 2873/0xB39) (Sent to originator)
> Message Type: SETUP ACKNOWLEDGE (13)
> [18 03 a9 83 81]
> Channel ID (len= 5) [ Ext: 1  IntID: Implicit  Other(PRI)  Spare: 0  Exclusive  Dchan: 0
>                       ChanSel: As indicated in following octets
>                       Ext: 1  Coding: 0  Number Specified  Channel Type: 3
>                       Ext: 1  Channel: 1 Type: NET]
> [1e 02 81 82]
> Progress Indicator (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0)  0: 0  Location: Private network serving the local user (1)
>                               Ext: 1  Progress Description: Called equipment is non-ISDN. (2) ]

> DL-DATA request
> Protocol Discriminator: Q.931 (8)  len=9
> TEI=0 Call Ref: len= 2 (reference 2873/0xB39) (Sent to originator)
> Message Type: PROGRESS (3)
TEI=0 Transmitting N(S)=11, window is open V(A)=10 K=7

> Protocol Discriminator: Q.931 (8)  len=9
> TEI=0 Call Ref: len= 2 (reference 2873/0xB39) (Sent to originator)
> Message Type: PROGRESS (3)
> [1e 02 81 88]
> Progress Indicator (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0)  0: 0  Location: Private network serving the local user (1)
>                               Ext: 1  Progress Description: Inband information or appropriate pattern now available. (8) ]
    -- Accepting overlap call from '' to '<unspecified>' on channel 0/1, span 1
    -- Starting simple switch on 'DAHDI/1-1'

После падения:

< Protocol Discriminator: Q.931 (8)  len=19
< TEI=0 Call Ref: len= 2 (reference 2869/0xB35) (Sent from originator)
< Message Type: SETUP (5)
< [04 03 80 90 a3]
< Bearer Capability (len= 5) [ Ext: 1  Coding-Std: 0  Info transfer capability: Speech (0)
<                              Ext: 1  Trans mode/rate: 64kbps, circuit-mode (16)
<                                User information layer 1: A-Law (35)
< [18 03 a9 83 81]
< Channel ID (len= 5) [ Ext: 1  IntID: Implicit  Other(PRI)  Spare: 0  Exclusive  Dchan: 0
<                       ChanSel: As indicated in following octets
<                       Ext: 1  Coding: 0  Number Specified  Channel Type: 3
<                       Ext: 1  Channel: 1 Type: NET]
< [7d 02 91 81]
< IE: High-layer Compatibility (len = 4)
-- Making new call for cref 2869
Received message for call 0xb544a3a0 on link 0xb715d95c TEI/SAPI 0/0
-- Processing Q.931 Call Setup
-- Processing IE 4 (cs0, Bearer Capability)
-- Processing IE 24 (cs0, Channel Identification)
-- Processing IE 125 (cs0, High-layer Compatibility)
q931.c:8281 post_handle_q931_message: Call 2869 enters state 6 (Call Present).  Hold state: Idle
q931.c:6837 q931_hangup: Hangup other cref:2869
q931.c:6594 __q931_hangup: ourstate Call Present, peerstate Call Initiated, hold-state Idle
q931.c:6085 q931_release_complete: Call 2869 enters state 0 (Null).  Hold state: Idle

> DL-DATA request
> Protocol Discriminator: Q.931 (8)  len=9
> TEI=0 Call Ref: len= 2 (reference 2869/0xB35) (Sent to originator)
> Message Type: RELEASE COMPLETE (90)
TEI=0 Transmitting N(S)=42, window is open V(A)=42 K=7

> Protocol Discriminator: Q.931 (8)  len=9
> TEI=0 Call Ref: len= 2 (reference 2869/0xB35) (Sent to originator)
> Message Type: RELEASE COMPLETE (90)
> [08 02 81 ac]
> Cause (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0)  Spare: 0  Location: Private network serving the local user (1)
>                  Ext: 1  Cause: Requested channel not available (44), class = Network Congestion (resource unavailable) (2) ]
q931.c:6837 q931_hangup: Hangup other cref:2869
q931.c:6594 __q931_hangup: ourstate Null, peerstate Null, hold-state Idle
Destroying call 0xb544a3a0, ourstate Null, peerstate Null, hold-state Idle

Все после данного сообщения

<--- SIP read from UDP:212.53.40.40:5060 --->
SIP/2.0 404 unknown user account
Via: SIP/2.0/UDP 78.159.238.43:5060;rport=5060;branch=z9hG4bK3474c651
From: <sip:2710406@sipnet.ru>;tag=as3310da58
To: <sip:8495555555@sipnet.ru>;tag=cd4c7e21-76475422
Call-ID: 5656a73a7c78d2181913b261501e8645@sipnet.ru
CSeq: 103 INVITE
Server: TarioSoftswitch/3.2.12
Content-Length: 0