When I switched over, they (Comcast) said that they had to set it up where your phone jack and cable line are close together. I'm seriously thinking of switching back because of the alarm system. I'm always getting an error on my alarm control panel, saying system phone failure. I called the alarm company at first, asking them about it and they said it's a cable problem. I have problems where my phone just doesn't work, no dial tone, but tv, and internet are fine, so it's not that cable is down, it's just the phone going out and then I have to reboot the modem. Also at times, the quali