As you can never tell whether a UA is a UA by itself, or part of a B2BUA, this must remain general UA behaviour.
The most you can do is add some informative material that essentially says this is useful for B2BUAs only. Regards Keith > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > Behalf Of Juha Heinanen > Sent: Saturday, June 14, 2008 2:21 PM > To: Christer Holmberg > Cc: [email protected]; Paul Kyzivat; Francois Audet > Subject: Re: [Sip] Draft submission: draft-ietf-sip-199-00 > > Christer Holmberg writes: > > > Back-to-Back User Agent: A back-to-back user agent (B2BUA) is a > > logical entity that receives a request and > processes it as a > > user agent server (UAS). In order to determine > how the request > > should be answered, it acts as a user agent > client (UAC) and > > generates requests. Unlike a proxy server, it > maintains dialog > > state and must participate in all requests sent > on the dialogs > > it has established. > > > > We could of course say something like: > > > > "UAS, when part of a B2BUA" > > according to the B2BUA definition: > > Since it is a concatenation of a UAC and > UAS, no explicit definitions are needed for its behavior. > > this means that there is no need to say anything special > about 199 either. b2bus in terms of protocol specification, > is just an uas like any other. > > -- juha > _______________________________________________ > 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 > _______________________________________________ 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
