On 03/05/2013 07:04 AM, Khoa Pham wrote:
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.