How I hooked up VOIPo

[ctaranto]

A quadruple NAT setup to get it to work It's amazing this setup is working without any problems. Personally, I would be hesitant to ever recommend such a setup.

If it's really necessary to have such a complicated setup, then it's either:
1) a bad ATA or
2) a bad ATA configuration/provisioning issue or
3) a bad router or
4) router setup problem.

It should be as simple as modem - ATA - router, or modem - router - ATA with a preferred single NAT at the most. Any other setup indicates a problem component and/or setup issue.

With modem -> router -> ATA, how does one get single NAT? Turning NAT off on the RT makes it not get Phone 1 lit.

And where are my "4 NATs"? Not knowing what happens internally, I believe that having the RT entirely on the 172.20.0 network, it's not doing NAT at all. I thought NAT happens when going from 172 to 192, or public to private.

-Craig