Quote Originally Posted by VOIPoTim View Post
...Do you have ports 5004-65000 UDP forwarded to the adapter in your router?
My Grandstream VOIP modem is upstream of everything including my router, i.e. connected first to Road Runner modem. I still get dropped dial-out and have bad choppiness on inbound stream like I never had with other providers.

I suspect the Grandstream modem has issues, and can't assemble bits as accurately/fast as my other modems did. Any suggestions, because I really want to stay with VOIPo!