Calls give busy signal after answering

[bwyatt]

This has been a persistent problem for me that has still not been resolved. Support has been very diligent in helping to resolve it, but just when I think it's going away, it comes back. There is no consistency at all. Below is the support ticket I just submitted:

Everyday I experience one or more incoming calls that do not connect. The caller tells me they dial my number but it never connects on their end. On my end the line rings, but when I answer there is silence for about 3-5 seconds then it goes to a fast-busy sound. The problem is always temporary. It works most of the time and doesn't once in awhile, but often enough to be an issue. I've submitted a ticket on this in the past and support indicated they would "condition" the lines. Whatever was done seemed to improve the performance, but the connection problem is still occurring too frequently for my service to be consistently reliable.

I'm posting here also, because you guys are so good with suggestions and I'm hoping someone reading this has an idea that might work.

I'm using Comcast for my internet service, standard D-Link router with latest firmware. I have both RT31P2 and PAP2 devices with VOIPO and have the same problem on both devices. I have DMZ'd the device temporarily for troubleshooting purposes and experienced the same issue even while it was DMZ'd. I have port forwarding rules set according to support's instructions and the SIP 'ALG' option on the router is turned off.

Any suggestions would be much appreciated.

[chpalmer]

I have not had good luck trying to use two devices on the same number behind the same public IP. Although Ive never had any other issues running an RT31P2 behind my pfSense router.

Try disconnecting and secondary Voipo devices you might have, reset everything including modem and routing device(s) and try it that way for a while.