Quote Originally Posted by lost_ View Post
Have you tried putting the ATA behind the router fw and do port-forwarding for the port range for VOIPo's ip's? (TCP 5060-5080, UDP 5004-65000 - a bit excessive, but that's what Tim recommended).
No I haven't. As I said in the original post, I had enormous problems with the Voipo Linksys ATA behind the router. I switched out three separate brands of routers, port forwarded 'till I was blue in the face, rebooted after every configuration change, verified that the changes stuck, etc. (Note that I have 2 other Linksys ATA's (one for NextAlarm, 1 for Gizmo5) behind the router that run 24/7 without a hiccup - and without needing any port forwarding.)

After switching to the Grandstream and putting it in front, EVERY problem has disappeared. The thing has turned from a monster into a pussycat. So, I don't want to tempt fate.

Hopefully the suggestions made by Tim and voipinit can resolve the problems.

Gary Sanders