sbiddle:tanivula: Hey Steve,
A couple of times when we've made a call, the other end could not hear us. First time we encountered the problem we did a complete restart of everything (modem, router, ata, phone). Second time a simple hang up and redial was all that was required.
There is nothing in there that should cause any effect like that. What device and router are you using?
While it shouldn't be necessary port forwarding the ports that are being used for RTP traffic by the device may be necessary, NAT issues are normally the cause of one way audio.
Using a WRT54GL running Tomato. Only port 5060 (UDP) is forwarded to the SPA2102. What other ports do you think I need to forward?