> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Adam > Roach > > The way to get identity through B2BUAs is to have them *be* back-to-back > USER AGENTS. They demonstrate to a 4474 signer (which may be colocated > with the B2BUA) that they are authentic agents of the signer's domain, > authorized to assert the identity in the "From" header field, and all > the 4474 goo can be added just fine.
That would work if and only if the B2BUA owned a cert of the same domain as the From they changed it to. That is actually not the case in practice, even when the From is an E.164. It would also not work if the From was not an E.164, since they can't go changing sip:[EMAIL PROTECTED] to sip:[EMAIL PROTECTED], for example. -hadriel _______________________________________________ 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
