let me quote the book "The IMS IP Multimedia Concepts and Services" from Wiley Page 180 reguarding the 200 OK returned from a successful Registration "" The UE, when receiving the 200 (OK) response, will store the entries in the Service-Route header. Whenever the UE sends out any initial requestion other than a REGISTER message, it will : * include the addresses that were received in the Service-Route header within a Route header of the initial requests; and * include the P-CSCF address as the topmost Route entry in the initial request. "" should clear your doubts :) Regards, Olivier Benny Prijono a ?crit : > Klaus Darilion wrote: >> Olivier Beytrison schrieb: >>> I don't think so. Because th P-CSCF address will be mostly assigned by >>> DHCP Option. Because when you're are moving with your device, you move >>> from one area to another one covered by annother GGSN, which mean you'll >>> have to contact a new P-CSCF, this without invalidating your registration. >> In the 3G book from Gonzalo Camarillo, the Service Route only includes >> the S-CSCF (no P and no I). > > Thanks for joining the discussion, Klaus. I think I must have > misunderstood RFC 3608 Section 6.1, which I thought says that the > Service-Route headers replace the whole route set configured in the UA. > > So as a confirmation, is it correct to append Service-Route headers > into existing route set? > > -benny > > >> Nevertheless I think Benny is right: without reREGISTRATION after >> changing the P-CSCF the client can not receive incoming calls (still >> routed to old P-CSCF using the old path). >> >> klaus > > > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org -- Olivier Beytrison Telecommunication Engineer Mobile: +41 (0)78 619 73 53 Mail: olivier at heliosnet.org GPG: 0x4FB83528 http://pgp.mit.edu/
