said by AngrySalad 
:I have a question about using optimum voice through the phone jacks in my house--
if I understand it correctly... (which i probably don't)
mbs uses the houses cable line- which is plugged into the modem-- a thats is then run from the modem to the phone- a signal and a dial tone can then be heard in the phone--
IF I were to plug a phone line in from the wall into the optimum voice modem then would every phone jack in the house carry a signal-- meaning I could hook a phone up to any phone jack in the house?
Probably, BUT you must make sure that your inside wiring is totally disconnected from the telephone company's lines, or you will damage the equipment. Here's an often-mentioned page that should explain everything you need to know:
