Re: Comment on DERIVE and B2BUAs
Dean Willis <[email protected]>
| Newsgroups | gmane.ietf.sip |
|---|---|
| Message-ID | <[email protected]> |
On Oct 30, 2008, at 4:11 PM, Ben Campbell wrote: > > On Oct 29, 2008, at 6:40 PM, Dean Willis wrote: > >> >> On Oct 28, 2008, at 11:05 PM, Dan Wing wrote: >>>> >>>> Would the SBC not have to handle the SUBSCRIBE request locally? >>>> After >>>> all, since it is a terminal UA for the call, it also knows >>>> about all the >>>> dialog states. The end-user UA would never even see the SUBSCRIBE. >>> >>> If that's a problem, just use some different method that goes end to >>> end. The always-loved INFO comes to mind. >> >> What makes you think that INFO goes end to end? An SBC can absorb >> it if it wants to. >> >> But this handling is not a bug, it's a feature. Since the SBC is >> call-stateful, it knows about the outgoing call, and thus can >> authoritatively say "Yes, this call was from Dan" without having to >> congest your low-rate end-link. >> > > Smells a lot like the "you break it you bought it" model for SBCs > and RFC 4474. Which is why identity is always transitive in nature . . . Alice's cousin Bob knows this woman Carol who is placing a call to Alice's friend Dave. Meanwhile, weasels have eaten our PBX. -- 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