[asterisk-bugs] [JIRA] (ASTERISK-25250) chan_sip - Despite the channel being answered, caller on a call established via Local channel continues to hear ringback

[Rusty Newton (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-25250?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rusty Newton updated ASTERISK-25250:
------------------------------------

    Status: Open  (was: Triage)

> chan_sip - Despite the channel being answered, caller on a call established via Local channel continues to hear ringback
> ------------------------------------------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-25250
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-25250
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_local, Channels/chan_sip/General, Core/Bridging
>    Affects Versions: 13.4.0
>            Reporter: Etienne Lessard
>            Assignee: Rusty Newton
>         Attachments: full.log, sip.conf
>
>
> Given I have the following extensions.conf:
> {noformat}
> exten = 102,1,NoOp()
> same  =   n,Answer()
> same  =   n,Dial(SIP/bob)
> same  =   n,Hangup()
> exten = 112,1,NoOp()
> same  =   n,Dial(Local/102 at internal)
> same  =   n,Hangup()
> {noformat}
> And I have two users, SIP/alice and SIP/bob
> When Alice dials 112, then Bob rings and Alice hears a ringback tone
> When Bob answers
> Then Alice and Bob are talking to each other, but Alice continue to hear the ringback tone (expected: the ringback tone stops)
> If Alice dials 102 directly, then the ringback tone is not heard after Bob answers.
> I've attached a full.log with SIP debug enabled.
> Both scenarios works fine in asterisk 11.
> [Edit by Rusty below:]
> I was able to reproduce on GIT-13-1aafadf(pulled on 2015-7-15) and here is what I found:
>  * Able to reproduce when using chan_sip
>  * Not able to reproduce when using chan_pjsip
>  * Symptoms include not only hearing ringback on the calling channel but also hearing "robotic" sounding receive audio from the called channel at the same time (on top of the ringback).
>  * On some calls it seems there is no audio except the ringback.
>  * Tested with both ulaw and g722, symptoms remained the same despite codec change.



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