bridonca wrote:I should note, you guys are using too much logic when it concerns Cisco gear. I did not advocate forwarding RTP ports because it makes sense
To paraphrase a famous computer scientist, I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a statement.
The OP claims to be losing registration. Registration has
nothing to do with RTP. RTP is for audio and is established when you make or receive a call. Whether or not RTP ports need to be forwarded has
nothing to do with an ATA being Cisco-branded or not. It's all in the router. If you have a crap router and one-way audio, port forwarding may solve the problem. A good router will route VoIP traffic properly. Having to "figure all that out" is exactly what your router is designed to do.
vostro wrote:until now, those lines remains on voip.freephoneline.ca are still disconnected.
To make sure I understand it correctly, you still have equipment attempting to register to voip.freephoneline.ca?
If so, that is making your problem worse. If you keep trying to register before the ban expires, you will extend the ban. Try powering down all your equipment that is registered to voip.freephoneline.ca for a couple of hours.