[Serusers] (no subject)

[chang jenny]

Hi all,

Here is my confusion about SER supporting NAT transversal.

1. With only RTPProxy, what kinds of types of NAT can SER with nathelper 
transverse?
2. What's the difference between MediaProxy and RTPProxy?
3. If UA supports STUN, do SER need to configure nathelper to support NAT 
transversal? Just because I knew STUN protocol only process a few kinds of 
types of NAT, I want to know what advantage it will add if I configure SER 
with nathelper.

Thanks a lot!

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