[Serusers] Ser running behind a NAT

[George KAPELIOS]

Hello,

Is anyone able to answer if SER could run without
problems behind a NAT ?

In our test, the server is assigned with a private IP
address and port 5060/udp is open on the NAT router.
UAs are alway able to register through public IP
addresses, but sometimes there are call setup problems
(for example a UA is keep trying to call a registered
user until timeout, or at the receiver end a new call
rings for once or twice and then call is terminated
for "unknown reason").

Is any other port or range required to be open in the
NAT?

Any knowledge or suggestions?

Thanks,
George