Re: Comment on DERIVE and B2BUAs
Dean Willis <[email protected]>
| Newsgroups | gmane.ietf.sip |
|---|---|
| Message-ID | <[email protected]> |
Elwell, John wrote: > Viktor, > > An interesting draft addressing a known problem space. Dan Wing has > already pointed out similarities with draft-wing-sip-e164-rrc (now > expired). I fear the present draft will not work in the presence of > B2BUAs along the path of the INVITE request, since these tend to > change things like call-ID, to-tag and from-tag. Since B2BUAs, and > SBCs in particular, are the main reasons why RFC 4474 will not work, > any solution has to be able to work through these devices. > 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. So the SBC's lack of transparency on tags, etc. is irrelevant. -- 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