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

[Carlos Mendioroz (JIRA)]

Carlos Mendioroz created ASTERISK-28828:
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             Summary: 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
            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.





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