Hi Vivek, this is point which I forgot to mention. The proxy has set a Record-Route header.
In this case the proxy gets when its UAS side is in PROCEEDING state an ACK which has a diffrent branch but the same sent-by parameter. The transaction identifier doesn't match and the proxy has no information about this transaction. Greeting Markus <[EMAIL PROTECTED]> schrieb am 18.02.05 11:15:37: > > > ACK is directly sent to UAS and if your proxy has added Record route, > ACK would come to your proxy bypassing previous proxies and in that case > u may get different Via and branch. > > Is the Via header same? > > Vivek > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Markus > Hofmann > Sent: Thursday, February 17, 2005 8:18 PM > To: [email protected] > Subject: [Sip-implementors] Right behaviour of a SIP proxy by unexpected > ACK > > > Hello, > > our proxy was receiving and forwarding an INVITE. The UAS answers with a > 180 Ringing which the proxy forwards. But now the UAC sends an ACK with > a different Via branch to the proxy - the Call-ID, To-Tag, From-Tag, > CSeq, everything is right. > > What should be the right behaviour from the proxy. Drop it or forward > it. At the moment I don't find the answer in RFC 3261. > > Thank you in advance. > > Markus > __________________________________________________________ > Mit WEB.DE FreePhone mit hoechster Qualitaet ab 0 Ct./Min. > weltweit telefonieren! http://freephone.web.de/?mc=021201 > > _______________________________________________ > Sip-implementors mailing list > [email protected] > http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > > > > Confidentiality Notice > > The information contained in this electronic message and any attachments to > this message are intended > for the exclusive use of the addressee(s) and may contain confidential or > privileged information. If > you are not the intended recipient, please notify the sender at Wipro or > [EMAIL PROTECTED] immediately > and destroy all copies of this message and any attachments. ______________________________________________________________ Verschicken Sie romantische, coole und witzige Bilder per SMS! Jetzt bei WEB.DE FreeMail: http://f.web.de/?mc=021193 _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
