On Tue, 2008-10-28 at 18:39 -0400, Nasir Khan wrote: > Yes, obviously RFC 4474s mechanisms end at a B2BUA because the B2BUA > effectively starts a new call (from the UAC side). > In fact the B2BUA cannot even provide a new Identity header if the > From header remains unchanged because the Contact would typically be > specific to the B2BUA and the private key for senders domain is > unknown to this B2BUA. > > It however is not as bad as it sounds because typically B2BUAs (SBCs > in particular) would be within the final UASs trust domain. >
In practice SBC is most likely a third-party piece of hardware/software with it's own functionality and most likely do not have access to local trust domain database. -- VictorG _______________________________________________ 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
