Arris SURFboard® SB5101 Cable Modem "comcast line phone mean" Questions

...Comcast Digital Voice, and I have an ADT alarm system. I rewired the alarm from the outside box and spliced it into a standard telephone cord, the cord plugs into the back of my Arris modem. I tested ...

...line vice versa. { note: dont change your modem yet unless proven that its defective}. comcast hi, westell 6100 is actually a good modem. what you can do, connect the modem directly to a power source ...