I had an additional thought.

I see that port forwarding is suggested by VoIPo to various people that might have VoIP connection problems. After reading the link you gave me, I'm thinking there is a root cause other then port forwarding, since you don't need to do port forwarding at all and your VoIPo phones work find, with no port forwarding. I'm thinking the port forwarding solution is a work around to a root cause problem, which I haven't identified yet in my m0n0wall.

I was hoping to see some other people who use pfSense or m0n0wall post here also.

I'm thinking the link you posted (although I don't completely understand it yet), may be the root cause to the connection problem I have. I have to figure how to implement that solution in my m0n0wall. Otherwise I might switch over to pfSense.

When you use your ATAs, the ports have to be opened or your phones wouldn't work. Doesn't NAT automatically open those ports, when they are needed? Then close them when not needed? That way you have more security.

Well, I have to leave and drive my wife to Gettysburg. Thanks much