On 8/14/2010 10:31 AM, John Smith wrote:
Would someone please decipher these phone cables?

There are four cables going into the phone box. One of the cables'
blue/dot blue conductors is terminated with a plug and plugged into a
jack. This cable's orange/dot orange conductors is spliced with the
blue/dot blue conductors of the other three cables. There are more than
9 jacks in the house and all jacks work.

I opened two wall plates and found only one cable in the box. Thus,
these two are not daisy-chained. I assume there is one more such box
somewhere.

What's going on here? Why is orange/dot orange spliced with blue/dot
blue? And how come those three cables still work (can dial in and out)
when they seem not plugged into the phone box? Thanks.

Someone already mentioned the possibility of an alarm system, if
so, there is a special jack called an "RJ31X" somewhere in a closet
or basement. The phone line is fed to the jack then back to all the
phones in the house. The purpose of the jack is to switch the phones
lines back to the phones in case of alarm system malfunction. The lines
are switched back when you unplug the alarm system from the RJ31X.

http://www.hometech.com/learn/rj31x.html

TDD