search for: gxw400x

...ecial features and changed the DIAL to {X*#+} but not luck. I can dial any other number, receive calls and so on. This is the only thing that seems to be an issue. Has anybody found a way around this problem. Reference: GXW-400x IP Analog Gateway Series Documentation: http://www.grandstream.com/gxw400x.html -- Yours truly, Yu

...on some calls the volume suddenly drops to inaudible o completely fades away for a time. If you hold on long enough (20 to 30 seconds) the sound will come back. My asterisk server is on a public IP, and basically acts as a VoIP bridge receiving calls from my customers (all of whom use Grandstream GXW400X gateways on public IP's, no NAT) and sending them to different SIP providers. I am proxying the RTP stream through the server (canreinvite=no). I am sure this is an issue with my setup because this happens to random customers calling to random destinations on any of our VoIP providers. The sym...