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Mark Lloyd Mark Lloyd is offline
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Default really old phone lines

On Tue, 26 Aug 2008 11:36:47 -0400, "TWayne"
wrote:

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.


Hmm, please cite your source?


For one thing, it isn't A source, but multiple sources. No way would I
be able to remember every little thing.

However, I do remember the latest one. About 2 and a half years ago I
bought some 6P6C modular plugs (called RJ12 IIRC) from Lowe's. The
instructions on the package describe them being used for up to 3
lines.

Sorry I couldn't help with that. I never even wanted that information
(I was using the connectors for something else*), let alone felt a
need to keep it around.

I'd like a look at them for myself. I'm
wondering if you aren't mixing up different RJ families of connectors or
something or whether something has changed. At least from CFR data on
the 'net, nothing has changed so it would have had to have happened
within the last say two to three years at the most. But there are of
course, multi-line phone jacks and cabling required to cable them up.
But you can't plug a "normal" telephone into them; they're made for
special equipment.


I've never seen one for 3 lines, but 2-line adapters seem commonly
available here. I'm looking at one now. It has a 6P4C male with 3
female connectors, wired as follows:

first jack (marked L1):

1 -
2-
3 - wired to 3
4 - wired to 4
5 -
6 -

second jack (marked L2):

1 -
2-
3 - wired to 5
4 - wired to 2
5 -
6 -

third jack (marked L1+L2):

1 -
2 - wired to 2
3 - wired to 3
4 - wired to 4
5 - wired to 5
6 -

For some reason the second jack has the connections reversed.

Blue/White for what it's worth is part a large jack/connector
combination and nothing you would ever find in the home or even stores
that sell phone equipment unless they also sold key sets,


That's wrong, considering what I found in Lowe's (see above). IIRC
that's all they sell.

PBXs and what
not. I've never even seen pure blue here in the states; only in the UK.


Pure blue? What sort of impure blue did you see?

TIA,

Twayne


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




* - holiday light control, which I've posted about elsewhere and isn't
really on topic here.
--
Mark Lloyd
http://notstupid.laughingsquid.com

"The government of the United States is not, in
any sense, founded on the Christian religion."