Line Pairs vs. Modems

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Jack Gillis - 29 Aug 2003 19:49 GMT

If this is OT for this group, would you mind pointing me to an
appropriate group. I can't make Google Groups reveal one I think would
apply.

I have a USR 56k Fax modem installed and it is connected directly to the
wall jack. The line from that jack carries two line pairs (Green Red
and Black Yellow.) Pair 1(Green Red) is my normal house phone and pair
2(Black Yellow) is an unpublished number for my computer and occasional
voice use. A two
line phone connects to the modem's phone jack but pair 2 does not get
passed to the phone by the modem. Plus, the modem wants to use Pair 1
as its connection. Is this normal for modems -- insisting on using pair
1 for the connection and not passing pair 2 out the phone jack?

Is there a way, by the use of a setting, to make it connect to pair 2
and pass both pairs to the phone. The latter is most important because
I feel I can probably crossover the pairs by changing the connectors
around though I haven't tried it yet.

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pinehill@nospamruralnet.org - 29 Aug 2003 22:26 GMT

You need to set up two phone jacks. I don't beleave they make any dual
phone line modems so all modems are going to us the red/green lines.
What you do is jump from your main phone jack to a additional jack with
a short piece of phone wire or cat 5 cable and put the yellow/black pair
in the same position that the red/green are in the original phone jack.
Hook your computer modem to the phone jack the uses the yellow/black
pair. You may be able to find a phone jack splitter for splitting a
single phone jack into dual phone line. It does the same as above but
in a compact plug. It has to be one set up for dual phone lines not one
that just splits a single phone jack into two jacks like you use for
ansering machines etc.

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Jack Gillis - 29 Aug 2003 22:47 GMT

Thank you. That is what I've done. I was just trying to find a way to
decrease the size of the Gordian Knot behind my desk and computer.

> You need to set up two phone jacks. I don't beleave they make any
> dual phone line modems so all modems are going to us the red/green
[quoted text clipped - 7 lines]
> up for dual phone lines not one that just splits a single phone jack
> into two jacks like you use for ansering machines etc.

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