[asterisk-bugs] [JIRA] (ASTERISK-28828) NOTIFY sequence upsets MS Teams SIP trunk

[Carlos Mendioroz (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-28828?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=250323#comment-250323 ] 

Carlos Mendioroz commented on ASTERISK-28828:
---------------------------------------------

I don't follow.  I can see the OK NOTIFY at line 692 of the log, or am I seeing something else ?

> NOTIFY sequence upsets MS Teams SIP trunk
> -----------------------------------------
>
>                 Key: ASTERISK-28828
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-28828
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Resources/res_pjsip_refer
>    Affects Versions: 17.3.0
>         Environment: Ubuntu 18.04 install from sources
>            Reporter: Carlos Mendioroz
>            Assignee: lvl
>            Severity: Minor
>
> Resuming an on hold call from MS Teams side often results in the call going to limbo. Trace shows out of order NOTIFYs and 500 response to a Trying event.
> On Joshua's advise, rolled back https://gerrit.asterisk.org/c/asterisk/+/13852 and even though the out of order Trying subsists, it does not gerenate a 500 and the call resumes correctly.
> Discussion here:
> https://community.asterisk.org/t/sip-xfers-via-reinvite-refer-and-order-of-notifys/83572



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