Vonage - expandable phones

Your choices are:

1. Put a splitter on the POTS output of the Vonage adapter and run a pair from it to where you want the second instrument to be.

1. Use a cordless phone system which permits multiple handsets working off one base station. RatShack and other sell them.
   formatting link
   ?catalog%5Fname=CTLG&category%5Fname=CTLG%5F008%5F004%5F004%5F002&Page=1

1. Pull the connection at the ILEC demarc to telco, and connect the Vonage adapter to the house wiring, then attach instruments to the old house wiring.

See option 2 above.

Through the ether (i.e., radio).

Maybe yes, maybe no, depending on what your existing cordless is, which you cunningly neglected to state.

Ah grasshopper - is there not a phone jack in the room with the cable modem? If so - just disconnect the telco side of the NID in the basement or on the outside and plug the POTS side of your VoIP router into that.

It's funny how that never occurs to people. For some reason, they think of jacks as one way only.

The danger, particularly if you are in a multiple unit residence, is that somebody, probably the phone company, will see it and plug it back in. This is likely to prove ungood. You are probably better off to disconnect it on your side of the NID and tape and tag it. I would label it something other than what it is to avoid sabotage.

That's why you tape it off and tag it with neon colors. Sabotage would be a violation of FCC and PUC rules as well as a criminal act.