No Audio With VoIP Gateway

[admin_2]

I have a problem with no Audio on VoIP gateways. Specifically this is an H.323 gateway.

I have encountered this at several customers and tried a number of versions of code. IP routing is enabled.

And all best practices implemented.

Any ideas?

[#2]

There may be many reason why you have one way

voice call.

1. You could have a codec missmatch and hence can

hear audio.

2. The ipaddress used for the return call leg may be wrong

and unreachable ( maybe loopback ip as I've seen this happen

before).