[asterisk-bugs] [JIRA] (ASTERISK-22983) DAHDI channel gets stuck in 'Pre-rin' state

[Peter Jolly (JIRA)]

Peter Jolly created ASTERISK-22983:
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             Summary: DAHDI channel gets stuck in 'Pre-rin' state
                 Key: ASTERISK-22983
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-22983
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
    Affects Versions: 11.4.0
         Environment: Asterisk 11.4.0 (32 bit) with DAHDI 2.7.0 
            Reporter: Peter Jolly


This issue has been debated on the Asterisk Forum under the title - ‘DAHDI trunk getting stuck in pre-ring state’ with reports from several users - all seeing the same issue. All in the UK, all with analogue lines, all with UK caller ID. No fix has been found.

The problem is that frequently after a call has finished the DAHDI channel stays stuck in ‘pre-rin’ state. This state will remain until a new in-bound call is received on that particular analogue channel. The issue occurs on any of the analogue channels on the line card. Out-bound calls cannot be made on the channel when it is in this state. You cannot clear the condition by using 'channel request hangup DAHDI/x-. Removing the telephone line cable does clear the line. As does stopping the Asterisk service and then starting it again. On our system you see this issue every day.

The system runs Asterisk 11.4.0 (32 bit) with DAHDI 2.7.0. It has three analogue exchange lines connected to a TDM410P card. The system is in the UK on BT lines with Caller ID. This problem did not occur on a much old system running Asterisk 1.4 and DAHDI 2.2.0.2-6

Any help would be very much appreciated. This is stopping us deploying any analogue installations at the moment.

Thanks,

peter.

My logs show:

At the end of a call:
 ………
[2013-11-06 13:47:22] VERBOSE[2384][C-000000b3] app_macro.c: == Spawn extension (macro-dialout-trunk, s, 22) exited non-zero on 'SIP/205-0000028d' in macro 'dialout-trunk'
[2013-11-06 13:47:22] VERBOSE[2384][C-000000b3] pbx.c: == Spawn extension (from-internal, 01245123456, 5) exited non-zero on 'SIP/205-0000028d'
[2013-11-06 13:47:22] VERBOSE[2385][C-000000b3] app_mixmonitor.c: == MixMonitor close filestream (mixed)
[2013-11-06 13:47:22] VERBOSE[2385][C-000000b3] app_mixmonitor.c: == End MixMonitor Recording SIP/205-0000028d
[2013-11-06 13:47:23] VERBOSE[7557][C-000000b4] sig_analog.c: == Starting post polarity CID detection on channel 1
[2013-11-06 13:47:23] VERBOSE[2386][C-000000b4] sig_analog.c: – Starting simple switch on 'DAHDI/1-1'

When the next call comes in on that channel:
[2013-11-06 15:15:31] NOTICE[3874][C-000000c7] chan_dahdi.c: Got event 17 (Polarity Reversal)...
[2013-11-06 15:15:31] VERBOSE[3874][C-000000c7] chan_dahdi.c: – Detected ring pattern: 0,0,0
[2013-11-06 15:15:31] VERBOSE[3874][C-000000c7] chan_dahdi.c: – Checking 0,0,0
[2013-11-06 15:15:31] VERBOSE[3874][C-000000c7] chan_dahdi.c: – Ring pattern check range: 10
[2013-11-06 15:15:31] VERBOSE[3874][C-000000c7] chan_dahdi.c: – Ring pattern matched in range: -10 to 10
[2013-11-06 15:15:31] VERBOSE[3874][C-000000c7] chan_dahdi.c: – Ring pattern check range: 10
[2013-11-06 15:15:31] VERBOSE[3874][C-000000c7] chan_dahdi.c: – Ring pattern matched in range: -10 to 10
[2013-11-06 15:15:31] VERBOSE[3874][C-000000c7] chan_dahdi.c: – Ring pattern check range: 10
[2013-11-06 15:15:31] VERBOSE[3874][C-000000c7] chan_dahdi.c: – Ring pattern matched in range: -10 to 10
[2013-11-06 15:15:31] VERBOSE[3874][C-000000c7] chan_dahdi.c: – Distinctive Ring matched context from-analog
[2013-11-06 15:15:31] VERBOSE[3874][C-000000c7] pbx.c: – Executing [s at from-analog:1] NoOp("DAHDI/1-1", "Entering from-dahdi with DID == ") in new stack
[2013-11-06 15:15:31] VERBOSE[3874][C-000000c7] pbx.c: – Executing [s at from-analog:2] Ringing("DAHDI/1-1", "") in new stack
[2013-11-06 15:15:31] VERBOSE[3874][C-000000c7] pbx.c: – Executing [s at from-analog:3] Set("DAHDI/1-1", "DID=s") in new stack
[2013-11-06 15:15:31] VERBOSE[3874][C-000000c7] pbx.c: – Executing [s at from-analog:4] NoOp("DAHDI/1-1", "DID is now s") in new stack
[2013-11-06 15:15:31] VERBOSE[3874][C-000000c7] pbx.c: – Executing [s at from-analog:5] GotoIf("DAHDI/1-1", "1?dahdiok:checkzap") in new stack
[2013-11-06 15:15:31] VERBOSE[3874][C-000000c7] pbx.c: – Goto (from-analog,s,9)
[2013-11-06 15:15:31] VERBOSE[3874][C-000000c7] pbx.c: – Executing [s at from-analog:9] NoOp("DAHDI/1-1", "Is a DAHDi Channel") in new stack
[2013-11-06 15:15:31] VERBOSE[3874][C-000000c7] pbx.c: – Executing [s at from-analog:10] Set("DAHDI/1-1", "CHAN=1-1") in new stack
[2013-11-06 15:15:31] VERBOSE[3874][C-000000c7] pbx.c: – Executing [s at from-analog:11] Set("DAHDI/1-1", "CHAN=1") in new stack
[2013-11-06 15:15:31] VERBOSE[3874][C-000000c7] pbx.c: – Executing [s at from-analog:12] Macro("DAHDI/1-1", "from-dahdi-1,s,1") in new stack

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