21 Oct
2010
21 Oct
'10
6:41 p.m.
Iñaki Baz Castillo writes:
The fact is that I agree with you. But note that with REGISTER the same occurs. It's very common an architecture in which the client is just provisioned with a domain name, which resolved to its proxy, and such proxy router the REGISTER to a registrar server (even if the RURI of the REGISTER just contains the proxy's domain).
rfc3261 allows that the ua is configured with address of registrar. in fact, there are sip UAs that allow configuring registrar differently from proxy. if proxy happens to know about registrar or some presence events, it is good luck. you cannot assume it.
-- juha