[Serusers] nat_ping alternative?

[Jev]

Hi All,

Would it be possible for ser to send a request to natted UAcs that will 
elicit a response from the actual phone? Something like an options query 
from SER to the phone?

With bi-directional udp package on regular intervals we would have a 
better chance of keeping NAT sessions working with a large range of NAT 
devices, without having to put special features (STUN, "Firewall 
Bullets", etc...) in every phones.


Thoughts?
-Jev