Hi all,

I have two things to discuss about XX-517: Problem clearing down inbound
ITSP call through sipXbridge


1. Polycoms send 603 Decline after a configurable period of time, when
an INVITE is not answered or cancelled.  Scott, you state that the phone
"should _NOT_ send a 603 response _ever_."  

The problem I think is that the phone does not know that no other end
point will answer the request?
(http://tools.ietf.org/html/rfc3261#section-21.6.2)

I can raise an issue with Polycom.  We recommend sending 480 Temporarily
Unavailable instead?


2. Chaitra noted three different observed behaviours:
http://track.sipfoundry.org/browse/XX-517?focusedCommentId=38999&page=co
m.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#action_
38999

Behaviour #2 is the Polycom's mysterious 400 Bad Request response to the
CANCEL.  I've alerted Polycom to the new logs Chaitra has provided.

Behaviour #1 seems to be the desired sipXbridge behaviour, where it is
able to detect and decline the unwanted second INVITE from the ITSP.  

Behaviour #3 seems to be a issue with sipXbridge, where it was not able
to detect that the third INVITE from the ITSP is also unwanted.  

Can I suggest that a separate JIRA issue be raised for Behaviour #3?


Thanks.


-Paul
[email protected]


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