Telephoneman wrote:[color=blue]
> Can anyone shed any light on this? I've set up 3 trunks - Voiptalk, Voipfone
> and Sipgate. With Voipfone and Sipgate I get 2 way audio but with Voiptalk
> the other party can hear me but I can't hear them.
>
> Voiptalk CS won't support trixbox at the moment, although they helpfully
> sent me a config that another customer had used successfully. If the problem
> was across all Carriers I'd suspect a NAT or port forwarding issue but with
> just one I'm scratching my head a bit.[/color]

Are you using SIP on Sipgate & Voipfone but IAX with Voiptalk?

If so, IAX requires a different (single) port to operate.
Have you forwarded TCP / UDP or both?

Looking at their site it appears they support Asterisk, tell them your
using Asterisk and get them to tell you what should be in the *.conf
files and what ports should be set. Make a note, then add it to the
freepbx interface later (will overight *.conf files).

Let us know how you get on.