No Voice Issue on some inbound calls

Actually I am having no voice issue on some inbound calls. The DID provider insists that its either my issue or it was a spam call

please ignore the following as i posted it earlier and was going in wrong direction

What could possibly the reason for

– Timeout on SIP/xxx.xxx.xxx.xxx-000039cb, continuing…

I received a call which did not had any voice. When I saw the logs I found it was timed-out and then executed the lines in extensions.conf

complete logs for that call:

== Using SIP RTP CoS mark 5
– Executing [19092458367@inbound:1] Answer(“SIP/xxx.xxx.xxx.xxx-000039cb”, “”) in new stack
– Executing [19092458367@inbound:2] Wait(“SIP/xxx.xxx.xxx.xxx-000039cb”, “2”) in new stack
– Executing [19092458367@inbound:3] BackGround(“SIP/xxx.xxx.xxx.xxx-000039cb”, “welcom33”) in new stack
– <SIP/xxx.xxx.xxx.xxx-000039cb> Playing ‘welcom33.slin’ (language ‘en’)
– Executing [19092458367@inbound:4] WaitExten(“SIP/xxx.xxx.xxx.xxx-000039cb”, “3”) in new stack
– Timeout on SIP/xxx.xxx.xxx.xxx-000039cb, continuing…
– Executing [19092458367@inbound:5] Macro(“SIP/xxx.xxx.xxx.xxx-000039cb”, “callrin,51”) in new stack
– Executing [s@macro-callrin:1] Set(“SIP/xxx.xxx.xxx.xxx-000039cb”, “CALLERID(name)=51–19496973777”) in new stack
– Executing [s@macro-callrin:2] Set(“SIP/xxx.xxx.xxx.xxx-000039cb”, “CDR(accountcode)=INBOUND”) in new stack
– Executing [s@macro-callrin:3] Set(“SIP/xxx.xxx.xxx.xxx-000039cb”, “date=2016-09-08”) in new stack
– Executing [s@macro-callrin:4] Set(“SIP/xxx.xxx.xxx.xxx-000039cb”, “time=15-26-21”) in new stack
– Executing [s@macro-callrin:5] Set(“SIP/xxx.xxx.xxx.xxx-000039cb”, “MONITOR_FILENAME=/var/spool/asterisk/monitor/2016-09-08/INBOUND/51–19496973777—15-26-21”) in new stack
– Executing [s@macro-callrin:6] Monitor(“SIP/xxx.xxx.xxx.xxx-000039cb”, “wav,/var/spool/asterisk/monitor/2016-09-08/INBOUND/51–19496973777—15-26-21,m”) in new stack
– Executing [19092458367@inbound:6] Dial(“SIP/xxx.xxx.xxx.xxx-000039cb”, “SIP/102&SIP/104&SIP/100&SIP/103&SIP/106,30,Tt”) in new stack
== Using SIP RTP CoS mark 5
== Using SIP RTP CoS mark 5
== Using SIP RTP CoS mark 5
== Using SIP RTP CoS mark 5
[2016-09-08 15:26:21] WARNING[29980][C-0006c97b]: app_dial.c:2437 dial_exec_full: Unable to create channel of type ‘SIP’ (cause 20 - Subscriber absent)
– Called SIP/1002
– Called SIP/1004
– Called SIP/1000
– Called SIP/1003
– SIP/1004-000039cd is ringing
– SIP/1003-000039cf is ringing
– SIP/1004-000039cd is ringing
– SIP/1002-000039cc is ringing
– SIP/1003-000039cf is ringing
– SIP/1000-000039ce is ringing
– SIP/1002-000039cc answered SIP/xxx.xxx.xxx.xxx-000039cb

I am using Asterisk server with ubuntu

It timed out because it didn’t have any DTMF, either.

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Okay but what could be possible reason for that, actually I’m new to voip. Normally calls flows smoothly but once or twice a month i get this problem.

I’ve set the dtmfmode=rfc2833

They could have just not entered any DTMF at that time. That’s the likely cause.

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Okay, I was going on wrong direction, actually the thing I’m trying to troubleshoot is no voice issue. sometimes inbound call doesn’t have any voice. The DID provider insists that its either my issue or it was a spam call