[Asterisk-Users] PRI - ISDN RESTART before connect

[hanson]

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Hello,

i have encountered RESTARTs during call establishing which occurs
under irregular conditions:

The behaviour is like described below:

When an outgoing call is dialed a SETUP isdn message is send to the
telco's switch. The teleco's switch
answers with an SETUP ACKNOWLEDGE message.

In my special case * sends a RESTART message right after SETUP
ACKNOWLEDGE , due to unknown reasons?
This causes the channel to be restarted and the call establishing
canceled !

Under working conditions the switch sends back CALL PROCEDING,
ALERTING, CONNECT
message which are replied by a CONNECT ACKNOWLEDGE message. =>
connection established

Please find my trace below,
thanx in advance,

Hanson


~    -- Executing CallingPres("SIP/8-66ac", "1") in new stack
~    -- Executing NoOp("SIP/8-66ac", "0") in new stack
~    -- Executing NoOp("SIP/8-66ac", "") in new stack
~    -- Executing Dial("SIP/8-66ac", "Zap/r1/103330037xxxxxxxxx|45|Tt")
in new stack
- -- Making new call for cr 32932
| Protocol Discriminator: Q.931 (8)  len=41 Call Ref: len= 2
| (reference 164/0xA4) (Originator) Message type: SETUP (5) [04 03 80
| 90 a3] Bearer Capability (len= 5) [ Ext: 1  Q.931 Std: 0  Info
| transfer
capability: Speech (0)
| Ext: 1  Trans mode/rate: 64kbps,
circuit-mode (16)
| Ext: 1  User information layer 1: A-Law
(35)
| [18 03 a9 83 88] Channel ID (len= 5) [ Ext: 1  IntID: Implicit, PRI
| Spare: 0,
Exclusive Dchan: 0
| ChanSel: Reserved Ext: 1  Coding: 0   Number Specified   Channel
Type: 3
| Ext: 1  Channel: 8 ] [6c 03 11 81 38] Calling Number (len= 5) [
| Ext: 0  TON: International Number (1)
NPI: ISDN/Telephony Numbering Plan (E.164/E.163) (1)
| Presentation: Presentation permitted, user
number passed network screening (1) '8' ]
| [70 13 91 31 30 33 33 33 30 30 33 37 33 36 39 36 31 33 30 35 38]
| Called Number (len=21) [ Ext: 1  TON: International Number (1)
| NPI:
ISDN/Telephony Numbering Plan (E.164/E.163) (1) '103330037xxxxxxxxx' ]
~    -- Called r1/103330037xxxxxxxxx
< Protocol Discriminator: Q.931 (8)  len=10
< Call Ref: len= 2 (reference 32932/0x80A4) (Terminator)
< Message type: SETUP ACKNOWLEDGE (13)
< [18 03 a9 83 88]
< Channel ID (len= 5) [ Ext: 1  IntID: Implicit, PRI Spare: 0,
Exclusive Dchan: 0
<                        ChanSel: Reserved
<                       Ext: 1  Coding: 0   Number Specified   Channel
Type: 3
<                       Ext: 1  Channel: 8 ]
- -- Processing IE 24 (cs0, Channel Identification)
< Protocol Discriminator: Q.931 (8)  len=13
< Call Ref: len= 2 (reference 0/0x0) (Originator)
< Message type: RESTART (70)
< [18 03 a9 83 88]
< Channel ID (len= 5) [ Ext: 1  IntID: Implicit, PRI Spare: 0,
Exclusive Dchan: 0
<                        ChanSel: Reserved
<                       Ext: 1  Coding: 0   Number Specified   Channel
Type: 3
<                       Ext: 1  Channel: 8 ]
< [79 01 80]
< Restart Indentifier (len= 3) [ Ext: 1  Spare: 0  Resetting Indicated
Channel (0) ]
- -- Processing Q.931 Restart
- -- Processing IE 24 (cs0, Channel Identification)
- -- Processing IE 121 (cs0, Restart Indicator)
| Protocol Discriminator: Q.931 (8)  len=13 Call Ref: len= 2
| (reference 32768/0x8000) (Terminator) Message type: RESTART
| ACKNOWLEDGE (78) [18 03 a9 83 88] Channel ID (len= 5) [ Ext: 1
| IntID: Implicit, PRI Spare: 0,
Exclusive Dchan: 0
| ChanSel: Reserved Ext: 1  Coding: 0   Number Specified   Channel
Type: 3
| Ext: 1  Channel: 8 ] [79 01 80] Restart Indentifier (len= 3) [ Ext:
| 1  Spare: 0  Resetting Indicated
Channel (0) ]
~    -- B-channel 0/8 restarted on span 1
Jan 21 10:43:57 WARNING[7358]: app_dial.c:399 wait_for_answer: Unable
to forward voice
NEW_HANGUP DEBUG: Destroying the call, ourstate Overlap sending,
peerstate Overlap Receiving
~    -- Hungup 'Zap/8-1'
~  == No one is available to answer at this time
~    -- Executing NoOp("SIP/8-66ac", "NOANSWER") in new stack
~    -- Executing NoOp("SIP/8-66ac", "0") in new stack
~    -- Registered SIP '880001' at 213.189.154.108 port 36365 expires 60
Jan 21 10:44:07 WARNING[7358]: pbx.c:1933 ast_pbx_run: Timeout, but no
rule 't' in context 'default'
~    -- Executing NoOp("SIP/8-66ac", "h HANGUPCAUSE is 0") in new stack

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