cannot hear some incoming calls but they can hear me

[alf]

I have a new problem. I cannot hear some incoming calls but they can hear me. I tell them to call back and some times it takes 2 or 3 times for me to hear.
I have tried resetting and unplugging everything "modem, pap2, router and reconnecting everything. checked routing ports and can't figure this out any idea's would help thanks

ALF

[bridonca]

It looks like you have to port forward. I see a tutorial for the Dlink DIR-825 and another voip provider, lingo. Only change you might have to do is with entry 3, 10000-20000. You have to find out what the ATA uses for RTP ports and forward them instead.

http://portforward.com/english/routers/ ... o_VoIP.htm

[dibsmft]

With the SPA2102 it is worth trying activating STUN, "NAT Mapping Enable" and "NAT Keep alive enable" . If you have forwarded ports then it should not be needed but sometimes the ATA cannot get the external (public) address whithout it.