As far as I know, the IETF hasn't finished standardizing SIP ACB using SUBSCRIBE.
Draft-ietf-bliss-call-completion might be useful; however I'm not sure if it specifically addresses your question. > -----Original Message----- > From: [email protected] [mailto:sip- > [email protected]] On Behalf Of Kanta C > Sent: Wednesday, January 20, 2010 1:49 PM > To: Sip Server > Subject: [Sip-implementors] Subscribe for Automatic Call Back Feature > > Hi All, > > I have a question regarding building of Subscribe message > for the below scenario : > > A Calls B. B has activated unconditional call forward to C. > The call gets forwarded to C. C is also busy in another call. > A wants to subscribe for the Automatic Call Back feature. > > Now when A subscribes for ACB, should it send the request-uri > of C or B in the subscribe msg. If it is B, then A would receive a > Notify immediately since B is not involved in any call. > >From above it seems ideally it should be C's request URI. > > Please clarify. > Regards, > Kinnu _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
