We use Vonage for our landline. I had it connected to the home network so that I could run several corded phones around the house in addition to a few cordless phones. The batteries of the old phone were dying so I decided to buy a new one. I bring it home and connect it to the network and all is working fine for about a day. After that whenever there was an incoming call, the phone would make a weird continuous ringing sound and the call would terminate. First I thought the new phone was a problem, but even when I unplug the new phone the other phones did the same thing. And things only got worse. As things stand now, no jack in the house even gets a dial tone, regardless of which jack I use to plug the vonage adapter.
If I plug the new phone (or an old corded phone) directly into the Vonage jack and bypass the home wiring, everything works fine. But this leaves me at the mercy of misplaced cordless phones. I tried unplugging all devices except one, but as soon as I introduce the home wiring into the system I do not get any dial tone.
Any suggestions on how I should identify/isolate/fix the problem would be greatly appreciated.