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