On Apr 22, 2008, at 12:29 AM, Juha Heinanen wrote: > Dean Willis writes: > >>>> If Bob forwards his phone to Charlie, Alice needs to see something >>>> signed by Bob or somebody authoritative for Bob that says the call >>>> is being redirected to Charlie before accepting a response from >>>> Charlie. >>> >>> I agree this would be a good thing. It doesn't have to be the 3xx >>> response. >> >> Correct. There have been other proposals, such as a reliable >> provisional informing Alice that an authorized proxy has retargeted >> the call to Charlie. This isn't hard -- it takes only a new response >> code and minor mods to RFC 4474. Or it could be done with no new >> extensions using an accept/refer/disconnect model. > > and how about if charlie decides to forward the call to bill, who bob > doesn't trust? >
At least Alice will know she's talking to Bill because Bob forwarded the call to Charlie who forwarded it to Bill. If Bill isn't happy about this, he and Charlie can step outside the pub later and have two words about it. At least this way we know what happened, and we know it far more authoritatively than History-Info would have told us. -- 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
