This question is more appropriate for the SIP or SIPPING mailing lists.
However, to answer your question: see draft-ietf-sip-outbound-10.txt.
-d
-----Original Message-----
From: Dangi [mailto:sip(_dot_)gyan(_at_)gmail(_dot_)com]
Sent: Friday, August 31, 2007 5:47 AM
To: ietf(_at_)ietf(_dot_)org
Subject: Behind the NAT registration
Hi All,
Assume a scenario where SIP UA is running behind a NAT. At
the time of registration, what should be the address put in
"Contact" header i.e. local/public IP?
If UA populates its local IP in "Contact" header, then that
can't be used to terminate call.
In general, its UA who determine its NAT bindings and
poupulate in "Contact" header or registrar determine it from
source of IP packet and send back in "Contact" header in 200 OK?
What is the best way to enable call termination on this UA
behind NAT i.e rport,stun,etc?
Thanks a lot,
/raj
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