[asterisk-bugs] [JIRA] (ASTERISK-20912) Asterisk responds to SIP CANCEL with 481 Call/Transaction Does Not Exist

[Rusty Newton (JIRA)]

Rusty Newton created ASTERISK-20912:
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             Summary: Asterisk responds to SIP CANCEL with 481 Call/Transaction Does Not Exist
                 Key: ASTERISK-20912
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-20912
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Channels/chan_sip/General
    Affects Versions: 1.8.15.0
            Reporter: mitja
            Assignee: Rusty Newton


Hi. 
First scenario:
I was testing sip trunk on asterisk 1.8, when incoming call is initiated and outside user then hangup without answering, phone will not stop ringing. The provider send me a Cancel request (Request-Line: CANCEL sip:77XXXXXX at 192.168.0.11:5060 SIP/2.0) but then asterisk give me " Status-Line: SIP/2.0 481 Call/Transaction Does Not Exist" error. In these case we have to restart asterisk to free a channel. In earlier versions of asterisk  (1.4,1.6) with same settins these problem never occurred, but only in asterisk 1.8.

Second scenario:
When incoming call is initiated and enduser answers the call, than all other calls hangup normaly, until asterisk is reloaded or sip trunk is reregistered.

I searched the internet for a few days now but I did not found nothing, I did try some patches for reinvite issues but nothing worked.

Thanks for your answer
bye, Mitja

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