How I hooked up VOIPo

[burris]

This is strange..

I have my ATA always behind the router...firewall off..NAT on..no port forwarding and no STUN and don't experience these problems..

[ctaranto]

This is strange..

I have my ATA always behind the router...firewall off..NAT on..no port forwarding and no STUN and don't experience these problems..

Firewall off on the router? That may explain a bit. I refuse to run my network that way.

Take a look at grc.com, go to ShieldsUp, and run a common port scan.

-Craig

[chpalmer]

Not to start anything here but... http://web.archive.org/web/200412121.../grcsucks.com/

Is the Wan of the RT31P2 using dhcp to get its address by chance?

Your WRT has nothing in the "gateway" portion of its DHCP server according to your post. This should be its lan address. 172.20.0.1

Id also turn off dns forwarder if its on. I believe some routers have problems passing dns queries between the "client" and the internet when the forwarder is on... worth testing anyway.