[SIPForum-discussion] problem with sip messageing

[Bob Penfield]

The INVITE (packet #11) and the 488 response (packet #13) have a Via branch of "z9hG4bK14477ab44bcf128e-b5659-0". The ACK (being sent by 4.71.122.180 in packet#14) to the 488 uses different a Via branch of "z9hG4bK14477ab44bcf128e-b5659-1", therefore the ACK does not get matched with the response at the UAS and it retransmits the 488 response.

The Via branch in an ACK to a non-success final response (3xx/4xx/5xx/6xx) must match the Via branch in the response being ACKed.


cheers,
(-:bob




From: discussion-bounces at sipforum.org [mailto:discussion-bounces at sipforum.org] On Behalf Of Sijit Nair
Sent: Thursday, April 22, 2010 9:23 AM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] problem with sip messageing

Can any one tell me the problem in this trace in related to messaging after ip198 send 488 to ip 180



--
Regards

Sijit Nair
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