The branch is one ( or the only ) Transcation identifier.
If the proxy cant find a Transaction for that ACK , it will forward it stateless. this also happend when the Proxy receives ACKs after OKs,
Regards Diego B
Markus Hofmann wrote:
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
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