[asterisk-bugs] [JIRA] (ASTERISK-26201) Asterisk fails to re-activate an inactive media session (after remote HOLD)

[Rudi (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-26201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=231442#comment-231442 ] 

Rudi commented on ASTERISK-26201:
---------------------------------

Yes if we set ignoresdpversion to yes there is no issue with sound. How does this affect this issue? I mean - SDP version is always 0, but if we test only with Phone B setting HOLD/unHOLD we got no issues, but if Phone B does the transfer there is no sound?

>  Asterisk fails to re-activate an inactive media session (after remote HOLD)
> ----------------------------------------------------------------------------
>
>                 Key: ASTERISK-26201
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-26201
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_sip/General
>    Affects Versions: 11.22.0
>            Reporter: Rudi
>            Assignee: Rudi
>         Attachments: ast_dump.txt, hold_no_sound.pcap
>
>
> 1. Phone A (our PBX) calls Phone B (Broadworks) to establish a call
> 2. Phone B transfers (attendant transfer) a call to Phone C (Broadworks) and so puts call on hold until call is transferred
> 3. when Phone C is on the line there is only one way audio from Phone C to Phone A.
> Examining SIP trace:
> 1. Start Hold - we receive ReInvite with sendonly and we reply with recvonly
> 2. We receive ReInvite with empty attribute and we answer with recvonly
> 3. We recieve ReInvite without SDP and we answer with sendrecv
> 4. End Hold - we receive ReInvite with empty attribute and we answer with sendrecv



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