[asterisk-users] BT ISDN-30 Call Failures

Gavin Henry gavin.henry at gmail.com
Thu Mar 25 18:43:50 CDT 2010 

Any probs with the circuits?

Try and upgrade?

On 17/03/2010, Russell Brown <russell at lls.lls.com> wrote:
>
>
> I'm seeing both inbound and outgoing call failures on our ISDN-30 lines
> that only seem to go away when I do a "zap restart" or in extremis
> restart Asterisk (1.4.25 with a Digium TE205P and zaptel 1.4.12.1).  If
> I don't restart zapata or Asterisk the problem rapidly get worse :-(
>
> The lines are from BT with LCR from Cable&Wireless (I've tried using the
> LCR bypass code and it doesn't make any difference).
>
> The outbound symptoms are that the number appears to go out on the ISDN
> but the caller hears nothing and the callee's phone doesn't ring
> (example below with ISDN debug on).
>
> The incoming problem is that the callee's phone rings for a couple of
> seconds and then the call gets cutoff (again example enclosed) or
> sometimes doesn't appear at all in the Asterisk logs and the callee gets
> a busy tone (no the system hasn't used all of the channels at this point
> :-).
>
> Can anyone suggest a cause and/or remedy?  Any idea what the
> disconnection stuff in the PRI debug means?
>
>
>
> Outbound log extract:
>
>
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c:     -- Executing
> [01780471800 at from-sip:18] Dial("SIP/197-b6726980",
> "Zap/G1/01780471800|9999|TWK") in new stack
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c: -- Making new call for cr 33089
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c:     -- Requested transfer
> capability: 0x00 - SPEECH
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c: > Protocol Discriminator: Q.931
> (8)  len=40
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c: > Call Ref: len= 2 (reference
> 321/0x141) (Originator)
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c: > Message type: SETUP (5)
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c: > [04 03 80 90 a3]
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c: > Bearer Capability (len= 5) [
> Ext: 1  Q.931 Std: 0  Info transfer capability: Speech (0)
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c: >
> Ext: 1  Trans mode/rate: 64kbps, circuit-mode (16)
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c: >
> User information layer 1: A-Law (35)
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c: > [18 03 a9 83 9e]
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c: > Channel ID (len= 5) [ Ext: 1
> IntID: Implicit  PRI  Spare: 0  Exclusive  Dchan: 0
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c: >                        ChanSel:
> As indicated in following octets
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c: >                       Ext: 1
> Coding: 0  Number Specified  Channel Type: 3
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c: >                       Ext: 1
> Channel: 30 ]
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c: > [6c 08 00 80 38 34 36 30 38 30]
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c: > Calling Number (len=10) [ Ext:
> 0  TON: Unknown Number Type (0)  NPI: Unknown Number Plan (0)
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c: >
> Presentation: Presentation permitted, user number not screened (0)  '846080'
> ]
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c: > [70 0c 80 30 31 37 38 30 34 37
> 31 38 30 32]
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c: > Called Number (len=14) [ Ext: 1
>  TON: Unknown Number Type (0)  NPI: Unknown Number Plan (0)  '01780471800' ]
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c: > [a1]
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c: > Sending Complete (len= 1)
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c: q931.c:3134 q931_setup: call
> 33089 on channel 30 enters state 1 (Call Initiated)
>  [Mar 17 16:58:02] VERBOSE[6630] logger.c:     -- Called G1/01780471800
>     *** At this point the caller hears nothing and the phone on
> 	*** 01780471800 *doesn't* receive a call.
>  [Mar 17 16:58:50] VERBOSE[6630] logger.c: NEW_HANGUP DEBUG: Calling
> q931_hangup, ourstate Call Initiated, peerstate Overlap sending
>  [Mar 17 16:58:50] VERBOSE[6630] logger.c: q931.c:3015 q931_disconnect: call
> 33089 on channel 30 enters state 11 (Disconnect Request)
>  [Mar 17 16:58:50] VERBOSE[6630] logger.c: > Protocol Discriminator: Q.931
> (8)  len=9
>  [Mar 17 16:58:50] VERBOSE[6630] logger.c: > Call Ref: len= 2 (reference
> 321/0x141) (Originator)
>  [Mar 17 16:58:50] VERBOSE[6630] logger.c: > Message type: DISCONNECT (69)
>  [Mar 17 16:58:50] VERBOSE[6630] logger.c: > [08 02 81 90]
>  [Mar 17 16:58:50] VERBOSE[6630] logger.c: > Cause (len= 4) [ Ext: 1
> Coding: CCITT (ITU) standard (0)  Spare: 0  Location: Private network
> serving the local user (1)
>  [Mar 17 16:58:50] VERBOSE[6630] logger.c: >                  Ext: 1  Cause:
> Normal Clearing (16), class = Normal Event (1) ]
>  [Mar 17 16:58:50] VERBOSE[6630] logger.c:     -- Hungup 'Zap/30-1'
>  [Mar 17 16:58:50] VERBOSE[6630] logger.c:   == Spawn extension (from-sip,
> 01780471800, 18) exited non-zero on 'SIP/197-b6726980'
>
>
> Here's an example of the inbound failure:
>
>
>  [Mar 17 17:04:46] VERBOSE[13006] logger.c:     -- Executing
> [846092 at isdn_in:1] Ringing("Zap/20-1", "") in new stack
>  [Mar 17 17:04:46] VERBOSE[13006] logger.c: q931.c:2844 q931_alerting: call
> 79 on channel 20 enters state 7 (Call Received)
>  [Mar 17 17:04:46] VERBOSE[13006] logger.c: > Protocol Discriminator: Q.931
> (8)  len=9
>  [Mar 17 17:04:46] VERBOSE[13006] logger.c: > Call Ref: len= 2 (reference
> 79/0x4F) (Terminator)
>  [Mar 17 17:04:46] VERBOSE[13006] logger.c: > Message type: ALERTING (1)
>  [Mar 17 17:04:46] VERBOSE[13006] logger.c: > [1e 02 81 88]
>  [Mar 17 17:04:46] VERBOSE[13006] logger.c: > Progress Indicator (len= 4) [
> Ext: 1  Coding: CCITT (ITU) standard (0)  0: 0  Location: Private network
> serving the local user (1)
>  [Mar 17 17:04:46] VERBOSE[13006] logger.c: >
> Ext: 1  Progress Description: Inband information or appropriate pattern now
> available. (8) ]
>  [Mar 17 17:04:46] VERBOSE[13006] logger.c:     -- Executing
> [846092 at isdn_in:2] Set("Zap/20-1", "CALLERID(name)=Banana") in new stack
>   <snip>
>  [Mar 17 17:04:48] VERBOSE[13006] logger.c:     -- Executing
> [s at macro-stdexten:38] Dial("Zap/20-1", "Sip/192|15|wWtTkK") in new stack
>  [Mar 17 17:04:48] VERBOSE[13006] logger.c:     -- Called 192
>  [Mar 17 17:04:48] VERBOSE[13006] logger.c:     -- SIP/192-02980aa0 is
> ringing
>  [Mar 17 17:04:49] VERBOSE[13006] logger.c:     -- SIP/192-02980aa0 is
> ringing
>  [Mar 17 17:04:50] VERBOSE[13006] logger.c:     -- SIP/192-02980aa0 is
> ringing
>  [Mar 17 17:04:52] VERBOSE[13006] logger.c:     -- SIP/192-02980aa0 is
> ringing
>  [Mar 17 17:04:55] VERBOSE[13006] logger.c:   == Spawn extension
> (macro-stdexten, s, 38) exited non-zero on 'Zap/20-1' in macro 'stdexten'
>  [Mar 17 17:04:55] VERBOSE[13006] logger.c:   == Spawn extension
> (macro-TELESALESUSER, s, 3) exited non-zero on 'Zap/20-1' in macro
> 'TELESALESUSER'
>  [Mar 17 17:04:55] VERBOSE[13006] logger.c:   == Spawn extension
> (real_isdn_in, 846092, 1) exited non-zero on 'Zap/20-1'
>  [Mar 17 17:04:55] VERBOSE[13006] logger.c:     -- Executing
> [h at real_isdn_in:1] Hangup("Zap/20-1", "") in new stack
>  [Mar 17 17:04:55] VERBOSE[13006] logger.c:   == Spawn extension
> (real_isdn_in, h, 1) exited non-zero on 'Zap/20-1'
>  [Mar 17 17:04:55] VERBOSE[13006] logger.c: NEW_HANGUP DEBUG: Calling
> q931_hangup, ourstate Disconnect Indication, peerstate Disconnect Request
>      *** Who requested this disconnect? Any ideas?
>  [Mar 17 17:04:55] VERBOSE[13006] logger.c: q931.c:2967 q931_release: call
> 79 on channel 20 enters state 19 (Release Request)
>  [Mar 17 17:04:55] VERBOSE[13006] logger.c: > Protocol Discriminator: Q.931
> (8)  len=9
>  [Mar 17 17:04:55] VERBOSE[13006] logger.c: > Call Ref: len= 2 (reference
> 79/0x4F) (Terminator)
>  [Mar 17 17:04:55] VERBOSE[13006] logger.c: > Message type: RELEASE (77)
>  [Mar 17 17:04:55] VERBOSE[13006] logger.c: > [08 02 81 e6]
>  [Mar 17 17:04:55] VERBOSE[13006] logger.c: > Cause (len= 4) [ Ext: 1
> Coding: CCITT (ITU) standard (0)  Spare: 0  Location: Private network
> serving the local user (1)
>  [Mar 17 17:04:55] VERBOSE[13006] logger.c: >                  Ext: 1
> Cause: Recover on timer expiry (102), class = Protocol Error (e.g. unknown
> message) (6) ]
>     *** Ummm... 'Protocol Error' doesn't sound nice!
>  [Mar 17 17:04:55] VERBOSE[13006] logger.c:     -- Hungup 'Zap/20-1'
>
>
>
> Any Ideas?
>
> Thanks in Advance.
>
> --
>  Regards,
>      Russell
>  --------------------------------------------------------------------
> | Russell Brown          | MAIL: russell at lls.com PHONE: 01780 471800 |
> | Lady Lodge Systems     | WWW Work: http://www.lls.com              |
> | Peterborough, England  | WWW Play: http://www.ruffle.me.uk         |
>  --------------------------------------------------------------------
>
> --
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