[asterisk-users] All Extensions Dropped

[Henry F. Camacho Jr.]

I have an Asterisk host connected to a T1 facility, and another Asterisk 
host connected via an IAX trunk in another location.  I have Ring groups 
defined to ring a number of extensions at once.  Intermittently when one 
of these ring groups is triggered, everyone that is on a phone call in 
the remote location is disconnected from their calls.

I think I have narrowed this down a bit to the following log entries on 
the Asterisk host that has the trunks, and is connected to the other 
server VIA IAX trunks

Jul 24 11:33:57 VERBOSE[1205]:     -- Accepting call from '9529350635' 
to '7632353001' on channel 0/1, span 1
Jul 24 11:33:57 DEBUG[1205]: Enabled echo cancellation on channel 1
Jul 24 11:33:57 VERBOSE[13405]:     -- Executing Dial("Zap/1-1", 
"IAX2/ucfrid/3001") in new stack
Jul 24 11:33:57 VERBOSE[13405]:     -- Called ucfrid/3001
Jul 24 11:33:57 VERBOSE[1171]:     -- Call accepted by 67.88.180.210 
(format ulaw)
Jul 24 11:33:57 VERBOSE[1171]:     -- Format for call is ulaw
Jul 24 11:33:58 VERBOSE[13405]:     -- IAX2/ucfrid/1 is ringing
Jul 24 11:33:58 VERBOSE[13405]:     -- IAX2/ucfrid/1 is ringing
Jul 24 11:34:05 DEBUG[1171]: Raw Hangup 67.88.180.210:4569, src=2, dst=2
Jul 24 11:34:05 DEBUG[1171]: Raw Hangup 67.88.180.210:4569, src=2, dst=2
Jul 24 11:34:05 DEBUG[1171]: Raw Hangup 67.88.180.210:4569, src=2, dst=2
Jul 24 11:34:05 DEBUG[1171]: Raw Hangup 67.88.180.210:4569, src=2, dst=2
Jul 24 11:34:18 VERBOSE[13405]:     -- IAX2/ucfrid/1 stopped sounds
Jul 24 11:34:18 VERBOSE[13405]:     -- IAX2/ucfrid/1 answered Zap/1-1
Jul 24 11:34:18 DEBUG[1171]: Ooh, voice format changed to 4
Jul 24 11:34:26 WARNING[1171]: Max retries exceeded to host 
67.88.180.210 on IAX2/ucfrid at 67.88.180.210:65065/2 (type = 6,
subclass = 2, ts=958873, seqno=46)
Jul 24 11:34:26 WARNING[1171]: Max retries exceeded to host 
67.88.180.210 on IAX2/ucfrid at 67.88.180.210:65065/2 (type = 6,
subclass = 11, ts=958876, seqno=47)
Jul 24 11:34:26 DEBUG[13402]: Didn't get a frame from channel: 
IAX2/ucfrid at 67.88.180.210:65065/2
Jul 24 11:34:26 DEBUG[13402]: Bridge stops bridging channels 
IAX2/ucfrid at 67.88.180.210:65065/2 and Zap/4-1
Jul 24 11:34:26 DEBUG[13402]: Set option AUDIO MODE, value: ON(1) on Zap/4-1
Jul 24 11:34:26 DEBUG[13402]: Hangup: channel: 4 index = 0, normal = 25, 
callwait = -1, thirdcall = -1
Jul 24 11:34:26 DEBUG[13402]: Not yet hungup...  Calling hangup once 
with icause, and clearing call
Jul 24 11:34:26 DEBUG[13402]: disabled echo cancellation on channel 4
Jul 24 11:34:26 DEBUG[13402]: Set option TDD MODE, value: OFF(0) on Zap/4-1
Jul 24 11:34:26 DEBUG[13402]: Updated conferencing on 4, with 0 
conference users
Jul 24 11:34:26 DEBUG[13402]: Set option AUDIO MODE, value: OFF(0) on 
Zap/4-1
Jul 24 11:34:26 DEBUG[13402]: disabled echo cancellation on channel 4
Jul 24 11:34:26 VERBOSE[13402]:     -- Hungup 'Zap/4-1'
Jul 24 11:34:26 DEBUG[13402]: Exiting with DIALSTATUS=ANSWER.
Jul 24 11:34:26 VERBOSE[13402]:   == Spawn extension (longdistance, 
918774263777, 1) exited non-zero on 'IAX2/ucfrid at 67.88
.180.210:65065/2'
Jul 24 11:34:26 DEBUG[13402]: We're hanging up 
IAX2/ucfrid at 67.88.180.210:65065/2 now...
Jul 24 11:34:26 VERBOSE[13402]:     -- Hungup 
'IAX2/ucfrid at 67.88.180.210:65065/2'
Jul 24 11:34:30 VERBOSE[1205]:     -- Channel 0/1, span 1 got hangup
Jul 24 11:34:30 DEBUG[13405]: Bridge stops because we're zombie or need 
a soft hangup: c0=Zap/1-1, c1=IAX2/ucfrid/1, flags
: No,Yes,No,No

This is extremely intermittent, and otherwise the system works just 
fine.  The above shows a call coming into an a number.  The extension 
was in use, and then the system just seemed to tear down the whole IAX 
trunk.

HFC

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