As I already said 2 times earlier in this thread : when I connect directly to the internet, then the registration goes through normally. So according to me it is definitely a NAT-problem. Don't need to find this out another 20 times.

Just don't know just what setting is needed when the Portech is behind NAT...

Jonas.


bruce bruce wrote:
Take out the router/firewall and connect directly to the net to test your NAT problem theory.

On Thu, Apr 22, 2010 at 12:15 PM, Jonas Kellens <[email protected]> wrote:
Jared,

thank you for your answer.

As I said in my previous mail, I'm using a Zyxel NBG-419 router (which normally supports VoIP and QoS). Firewall is disabled on the Zyxel.

The MV-374 only accepts IP-address, not a FQDN. Will give it another try though...

The answer from Portech-support : "use STUN".

Even if the NAT rewrites the IP-address/port combination, why is it a problem for the Portech and not for the IP-phones (Grandstream & Snom) ? They all communicate on port 5060 --> 5064 (several SIP-accounts)


Jonas.

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