Response below, Cheers, Lincoln
Brett Tate wrote: >> Can anyone please let me know is there any >> scenario wherein it will be required that >> Subscriber makes a call to himself? >> > > The common example is users dialing there own number as a mechanism to > connect to their voice mail server; however I'm not sure if actually > discussed within the IMS documents. The proxy/B2BUA recognizes the > situation and redirects/proxies the call to the voice mail server > instead of attempting to actually ring the phone making the call. > > LYL -> I think this is probably less of the case for a pure IMS network implemented with CSCF servers and voice mail as an application server (AS). Reason being, for the SIP signaling to be routed to the voice mail AS, the S-CSCF server must evaluate an initial filter criteria (iFc) indicating the call should be forwarded to the AS as opposed to another subscriber. The trouble with this is, the allowed structures for the iFc do not make this easy, on the grounds that, each iFc would need to be "tuned" to each individual user, i.e. look for To URI equal to the subscriber's public ID (aka SIP URI). The filter criteria are actually intended to be part of a service profile, which may be applied to multiple (read as hundreds) of subscribers to simplify management and addition of new services and applications. > > >> is there any RFC/draft saying something regarding this? >> > > Not sure. > > > >> IF such scenario happen what should be the correct >> behavior of proxy? >> > > Act however the proxy is supposed to act concerning spirals, loop > detection, routing, and services. > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > -- ********************************************************************** Lincoln Lavoie Senior Engineer UNH InterOperability Laboratory 121 Technology Drive, Suite 2, Durham, NH 03824 +1-603-862-4809 Email: [EMAIL PROTECTED] AIM: LincolnAtIOL Ars sine scientia nihil est! -- Art without science is nothing. Scientia sine ars est vacua! -- Science without art is empty. ********************************************************************** _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
