[Rtcomm] [Rtcomm] [Bug 3824] SIP Calls keep ringing despite being picked up by other side

Tue Jan 13 18:11:27 EET 2009

https://bugs.maemo.org/show_bug.cgi?id=3824

mikhail.zabaluev at nokia.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|                            |WORKSFORME

------- Comment #51 from mikhail.zabaluev at nokia.com  2009-01-13 18:11 GMT+3 -------
(In reply to comment #50)
> Either the proxy at callcentric.com (cf. packet #4), or maybe something in the
> middle, rewrites our Via header in responses with the external address, instead
> of putting it into the "received" parameter.

Attachment #1057 from comment #32, reportedly captured on the server side,
hints strongly that a NAT middlebox is the culprit in rewriting the headers and
failing to do it cleanly. This is corroborated by findings in comment #44. I'd
like to see the capture for the DPH-541 in the same network configuration; my
guess is it uses STUN to discover the SIP binding, which has its own set of
problems, but works here.

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