Subject: From: Date:

Re: [ECS] Phone wire? Christopher Zguris Thu, 18 Mar 1999 09:14:23 -0800

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Generally, it's best to home-run a 4-pair cable to _each_jack_, they all go
to a central location (wiring closet or where the telephone service/demarc
enters the house). In the old days, and with inside wiring installed by the
phone co, they tend to use quad (red, green, black, yellow) and daisy chain
one wire all over the place. In the real world, this is frowned upon since
this wire is junk, daisy-chaining is bad since it limits flexibility and
future expansion. Putting two lines on this stuff is not recommended and
can cause cross-talk between the lines. Twisted pair cable (indicated by
color codes white/blue-blue/white, white/orange-orange/white,
white/green-green/white, white/brown-brown/white) is designed to prevent
cross talk, that's why it's twisted. Although the most widely available
cable is 4 pair (8 wires), 2 pair (4 wire) cable is available and contains
white/blue-blue/white and white/orange-orange/white (not the same as
quad!). The main uses I've seen (and used it for) are for patching between
punch blocks and modular telephone systems - you crimp a modular connector
on one and strip the other end to punch down.


At 02:37 AM 3/18/99 -0800, you wrote:
>Nowadays, six or even eight wires is actually standard - I have never seen
>only two wires. In my home (1976), it's six wires, and most people nowadays
>use CAT-5 cable for telephone wiring, which has eight.
>
>In any case, each phone line only uses pair of wires, so you are fine. Just
>connect your wires to the red and green wires in your jack.
>
>Ingo
>


Christopher Zguris
czguris@christopherzguris.com

http://www.christopherzguris.com

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