[Asterisk-Users] One-way audio in incoming calls with Asterisk + OpenGK + Innovaphone IP3000

[Silviu Herchi]

Hello everybody,

I’ve been pulling my hair for a week now over a problem, and I really don’t
know where to look anymore. Here’s my setup:

There is an Innovaphone IP3000 VoIP gateway on the LAN (10.253.30.254). I
can use it to send and receive calls from physical phones attached to it.

I have setup Asterisk 1.0.3, with H323 and openH323, and on the same server
I also setup GnuGK (10.253.30.1). I use SIP soft phones connected to the
Asterisk (SJphone).

Both the Innovaphone and Asterisk are configured to register on OpenGK as
gateways. They do it correctly, and phone signalling is OK (phones ring in
both directions, and can be picked up OK).

When I call from the softphones to the hard phones, everything is OK. When I
call the other way round (hard to softphones), I only have audio incoming
(from hard to softphones)!

All the machines are on the same LAN, attached to a hub. There is no
firewall running on them. I tried switching from the supplied H323 Asterisk
channel to OH323. I tried GnuGK in routed mode, in proxy mode, etc. to no
avail. I also tried sniffing the communication with Ethereal.

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