[asterisk-bugs] [JIRA] (ASTERISK-28036) Codec negotiation when incoming re-INVITE has no SDP

[Benjamin Keith Ford (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-28036?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=244694#comment-244694 ] 

Benjamin Keith Ford commented on ASTERISK-28036:
------------------------------------------------

[~danieleharper], I'm going to close this out as a feature request, but I would highly recommend bringing this up on the dev list (either email [1] or IRC [2]) and getting some feedback there on ways to move forward with this if it's something you would like to see done. If it's something you would like to do, feel free to submit patches to Gerrit [3] once you are ready!

[1]: https://www.asterisk.org/community/discuss
[2]: https://www.irccloud.com
[3]: https://wiki.asterisk.org/wiki/display/AST/Gerrit+Usage

>  Codec negotiation when incoming re-INVITE has no SDP
> -----------------------------------------------------
>
>                 Key: ASTERISK-28036
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-28036
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_pjsip, Resources/res_pjsip_sdp_rtp
>    Affects Versions: 13.22.0, 15.5.0
>         Environment: Centos 6.10, 64bit
>            Reporter: Daniel Harper
>            Severity: Minor
>
> I appreciate that there might be a view that this is a feature request but I also believe that it could be also be viewed that this is a bug but I welcome the discussion.
> When recieving an re-Invite without SDP asterisk is not re-offering all supported media formats & codecs only the previously determined one.
> I found this link that references the various RFC's where this behaviour is expected. 
> Where this is an issue is in a call-pick up scenario where asterisk is dialing a call-pick feature code to pick up a external call. The issue being that the call being picked might not support the originally determined codec.



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