On Mon 25 Aug 2008 10:54:00a, Mark Lloyd told us...

On Mon, 25 Aug 2008 12:24:11 -0400, "TWayne"
wrote:

[snip]

More than likely, all you need are the green and red wires. The black
and yellow wires would be used for a second line if you had one. In a
normal residential system, they are not used, even though they may be
hooked to terminals as if they are.

A telco will NEVER use the yellow and black lines for a second line with
a normal RJ-11 installation. Those are for lights and grounds in key
systems, etc..


A lot of the materials I've seen (including wiring diagrams for jacks)
say yellow/black is for a second line. Also, if you have a third pair,
blue/white for a third line.

I don't know about key systems, but aren't the lights (that use
yellow/black) obsolete?

Not if you still have those type of phones. Many people still do.

--
Wayne Boatwright

*******************************************
Date: Monday, 08(VIII)/25(XXV)/08(MMVIII)
*******************************************
Countdown till Labor Day
6dys 12hrs 43mins
*******************************************
Hand me that crowbar... I must pry out
this bullet.
*******************************************