Existing implementations would ignore the Warning, and normal treatment for 480 would occur. I.e., it would be the same treatment as if the user is recognized as beeing a valid user, but he's currently not logged in.
With 418, existing implementations would treat it as 400. I.e., it would be as if the message itself had an error. This may need to different UI for the user (e.g., different tone played, different message displayed, etc.) > -----Original Message----- > From: Charles Eckel (eckelcu) [mailto:[EMAIL PROTECTED] > Sent: Monday, July 30, 2007 13:12 > To: Audet, Francois (SC100:3055); Paul Kyzivat (pkyzivat) > Cc: IETF SIP List > Subject: RE: [Sip] draft-ietf-sip-sips-05: 480 vs. 418 > > I do not have a real preference, but provided the reason for > using 480 vs. 418 is to minimize naïve downgrading from SIPS > to SIP, I do not see how option 2, resulting in: > > 480 > Warning: 390 isi.edu "Please use a SIP URI" > > helps matters. > > Cheers, > Charles > > > -----Original Message----- > > From: Francois Audet [mailto:[EMAIL PROTECTED] > > Sent: Monday, July 30, 2007 10:59 AM > > To: Paul Kyzivat (pkyzivat) > > Cc: IETF SIP List > > Subject: RE: [Sip] draft-ietf-sip-sips-05: 480 vs. 418 > > > > > > > > > -----Original Message----- > > > From: Paul Kyzivat [mailto:[EMAIL PROTECTED] > > > Sent: Monday, July 30, 2007 10:47 > > > To: Audet, Francois (SC100:3055) > > > Cc: IETF SIP List > > > Subject: Re: [Sip] draft-ietf-sip-sips-05: 480 vs. 418 > > > > > > I don't know what you mean about Option 1 being opaque to > automata. > > > It seems to me it provides comparable info to Option 2, > giving that > > > the UAC knows what it used in the request. > > > > It means an Automata can not "upgrade" or "downgrade" > > automatically with > > OPTION 1, as the indication is not a "hard" indication. It is a > > Warning text that is not standardized, and will vary by language, > > operators, region, etc. > > > > Best it can do is "record" the Warning text. That can be done > > automatically of course. > > > > > > > > _______________________________________________ > > Sip mailing list https://www1.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://www1.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
