No Audio on Incoming Calls

[sensation]

I am using this service with Linksys PAP2 ATA for the last 4 months and everything was working fine. Recently, I am experiencing no audio on the incoming calls, however, the other person can hear us on the other side. There is no change in the configuration of any sort from my side on ATA.

Any suggestion how to fix this problem.

[Pierre]

I will be monitoring this post as I am having the same problem.
I suspect problems with consistency of my internet connection, what kind of connection do you have? cable, wireless others??

[bridonca]

Your router got amnesia, and "forgot" where to route the incoming audio. Surprised it lasted this long. Quick fix is the turn off the router, ATA and modem, then turn on the modem, wait 20 seconds, turn on router, wait 30 seconds, and then turn on the ATA.

To permanently fix this problem, you need to manually map RTP port(s) to the ATA.

[sensation]

Your router got amnesia, and "forgot" where to route the incoming audio. Surprised it lasted this long. Quick fix is the turn off the router, ATA and modem, then turn on the modem, wait 20 seconds, turn on router, wait 30 seconds, and then turn on the ATA.

To permanently fix this problem, you need to manually map RTP port(s) to the ATA.

There is no router between ATA and modem. ATA is directly plugged into modem. Moreover, I am sure what do you mean by manually map RTP ports to ATA.

FYI - I am using Rogers cable

Thanks for your help.

[watermark]

This 1-way voice problem most likely happens on your ATA behind a firewall or router. Most home routers block traffic initiated from outside Internet. A smart router can open RTP ports dynamically according to the content of the SIP communication. For most other routers, port forwarding has to be done on a wide range of your ATA RTP ports.

[sensation]

I believe the problem has been resovled since I changed the pref codec to G711 and "yes" to Use pref codec only.

Thanks to all for your responses.