Originally Posted by DeltaBill
I do intend to swap the units this weekend to check the wiring. However, I don't think that would be an issue as both cables begin at the same powered splitter.
My house builder in 1997 put nine outlets off 8 wires bundled at the garage so he hid one splitter in the walls to service two rooms and that can make a difference .... your swap will help reveal this. In my case, my DCX host needed to be in the room that was fed from the outlet coming from the hidden wall splitter and that splitter was also 12 years old. Although, the host worked, it's gain and signal strenght were affected so I had Comcast (for $29) run a dedicated home-run to that room from the garage all the way to the other end of the house (about 100 feet). Fortunately, it was an easy install because of the full length 7' high enclosed unfinished back area of the daylight basement. Took only about 15 minutes. Also had them move my Phone/Internet modem from the garage to that same home office room while they were at it plus run a Cat5 dial-tone cable back to the garage to the front-end ADT alarm system phone intercept. They pulled 3-cables in all at the same time .... just as easy as pulling one. The host DVR now has a great signal strength plus the modem perfomance also improved. The other room that shared the outlet actually had two outlets so I abandoned in place the shared outlet in that room along with the one that used to feed the Host unit .... the house only needed 8 outlets in 1997.
However, today with a cable phone/internet modem, a monitored alarm system plus the advent of AnyRoom, the house would be built with the 8 Coax home runs to each of the original locations plus one or two extra Coax home runs to potential rooms where a phone/internet modem would be located plus Cat5 return runs back from those phone/internet modem rooms for dial tone to the alarm system intercept box. That's essentially what I've now ended up with for an extra $29 (thankfully reasonable).
I think believe many of the newer custom homes have more spare home run wiring installed these days for this reason.
BTW, make sure you test your Alarm System so it can properly dial out if you have one, especially if they worked on your phone/internet modem.