[sr-dev] Why doesn't Kamailio handler x-NAT field ?

[Simon Perreault]

Le 2013-03-05 13:08, Alex Balashov a écrit :
>> When client use STUN, it can detect the NAT type. When client
>> register, it contains x-NAT (0:unknown, 1: full cone, ..., 6:
>> symmetric), which will be helpful for the server to detect NAT type.
>
> Again, where are you finding these nonsymmetric clients?  The amount of
> non-symmetrical SIP and RTP implementations out there in the wild at
> this point is negligible.

You're confusing "symmetric RTP" (as defined in RFC 4961) with 
"symmetric NAT" (as defined in RFC 3489).

Simon