System losing devices
Installed a new modem (retail) and the system would not let it register. After four rounds with customer service online/phone, went in to the local Cox store and they managed to registerthe modem to ...
Forum Discussion
I'll assume you have 3 coaxial splitters. One in the box on the side of your house and two on each of the lines coming into the house. Inspect these splitters. Do the splitters look old, dirty, etc.
You could on one of the lines coming into your house...the one with the modem for example...move the coaxial cable to the other output on the splitter. Leave the telephone modem disconnected. If it works, perhaps a bad splitter.
