[Asterisk-Users] Sip behind the NAT

[Wilson Pickett]

> i have an asterisk box behind the NAT ,when i try to
> send calls through Sip to the voip provider server the
> call is answered but in a one way calling,I hear  the
> voice of the other side just for 4 seconds and then
> stop but the call do not hangup.

SOmetimes this can be due to the client using silence suppression.
Make sure this function if OFF.