Re: [Nolug] Trixbox - no audio on incoming calls

 From what I've read you are correct - Sip and Nat don't get along but
1 to 1 did do the trick for me. Funny before I moved I didn't even have
a port forwarded and it worked great. I'll see how it goes from here.

Thanks,
-Dane

Joey Kelly wrote:
> On Tuesday 08 January 2008 05:40:33 pm Dane Reugger wrote:
>
>> Got a couple of questions that maybe somebody on this list can help me
>> with.
>>
>> First ...
>>
>> I setup a Trixbox 9 month ago or so and it worked great - we just moved
>> our offices and at first it didn't work at all. I eventually port
>> forwarded a bunch of ports and modifying the sip_nat.conf and now it
>> calls out great but on incoming calls you can't hear the caller?
>>
>> I think I'm got to try 1:1 Nat but I don't see how that will help - any
>> better ideas?
>>
>
> SIP and NAT don't place nice together. The problem is that SIP only sets up
> the call, it does't transfer any of the data (audio). The data goes over
> another port. NAT can't figure out what ports the phones (or PBXs) decide
> upon for the data, so you'll hear one side of the conversation sometimes, and
> sometimes nothing.
>
> STUN is sometimes used to get around this limitation. Another way to do so is
> to use IAX if possible, but if your provider can't do IAX, well... Another
> method is to route your calls through Free World Dialup.
>
>

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Received on 01/08/08