On Apr 12, 2008, at 3:25 PM, Francois Audet wrote: > Every single implementation that I've see does the following: > > Contact: sip:[EMAIL PROTECTED];user=phone > > Where example.com is the domain of the forwarding user. The SIP > proxy will > then route it to a PSTN if appropriate.
I think you've missed the use case. You've forwarded the call to a gateway in the domain of the called party. Since the calling party (most probably) does not have authorization to use that gateway, the likely response when they attempt INVITE to that contact is a 404. SIP, as you describe it, works just fine in a single-provider domain. That's telephony over IP, not a model for Internet communications. -- Dean _______________________________________________ Sip mailing list https://www.ietf.org/mailman/listinfo/sip This list is for NEW development of the core SIP Protocol Use [EMAIL PROTECTED] for questions on current sip Use [EMAIL PROTECTED] for new developments on the application of sip
