[asterisk-bugs] [JIRA] (ASTERISK-28322) desync in 183 behavior between chan_sip and chan_pjsip

[Ross Beer (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-28322?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=246426#comment-246426 ] 

Ross Beer commented on ASTERISK-28322:
--------------------------------------

Isn't the correct behaviour to forward a 183 with no SDP so that the client generates ringing?

> desync in 183 behavior between chan_sip and chan_pjsip
> ------------------------------------------------------
>
>                 Key: ASTERISK-28322
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-28322
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_pjsip
>    Affects Versions: 13.20.0
>            Reporter: Torrey Searle
>              Labels: pjsip
>
> chan_sip is designed to explicitly ignore 183 messages if no sdp is found.  chan_pjsip however will instead forward a 183 with sdp instead.  This results in a lack of a ringback tone for impacted users.
> This patch adds a new flag to endpoints allowing the user to have the chan_sip behavior if desired.



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