Pardon, what is SBC and SBE? Thanks. [EMAIL PROTECTED] 写道: > From: "Barman, Sibon B \(Sibon\)" <[EMAIL PROTECTED]> > > When a user agent sends a REGISTER request with private address in the > Contact header, the session border element sends a response with the > UA's public IP address in the contact header as well as in the Via > header's rport and received parameters. Is that correct spec-wise --- > should the UA be able to handle this registration response and treat it > as its own contact? Or does the 3261 spec dictate that the response > should contain the same contact address as the request? > > Assuming that the session border element is "transparent", it must > make the UA think it is talking to an RFC 3261 registrar, and the > registrar think it is talking to an RFC 3261 UA. > > So when the UA sends REGISTER to the SBE, the SBE replaces the contact > A with the contact A' (which is routable in the registrar's network). > The registrar's response lists contact A'. But the response that > arrives at the UA must contain the contact A, because that's how a > 3261 registrar would have responded to it. So the SBE has to replace > A' in the response with A. > > Dale > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > >
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