[Asterisk-Users] Cisco 7940 no audio

[Brian Cuthie]

Craig Waddington wrote:

> When we receive or make a call to the outside – they can hear us, but 
> we cant hear them.
>
> It may work 1 of 20 times. I have set canreinvite=no and looked at 
> many sites but cannot track down this problem.
>
> Current setup:
>
> Isdn Eicon Diva card / Capi -> Asterisk à network.
>
> I have tried adjusting the RTP port in rtp.conf with the Cisco default 
> ports, no luck.
>
> Anyone had this problem, and has a fix?
>
> Thanks.
>
Make sure you don't have the Cisco phone set to do NAT.

-brian