I have ADSL voip in the computer room in my house.  I also have a
separate telephone line to the computer room (not being used).

The extra line runs from my computer room to the D Mark (telephone
junction box outside the house).  Is it possible to connect the voip
adapter to this line and then rewire the D mark so that I would have
voip on all of the phones in the house?

Thanks for your help, Earl Williams,  Surrey, British Columbia

In article <1156971387.396102.176070@h48g2000cwc.googlegroups.com>,
RadioDays <thoseradiodays@yahoo.com> wrote:

> I have ADSL voip in the computer room in my house.  I also have a
> separate telephone line to the computer room (not being used).
> 
> The extra line runs from my computer room to the D Mark (telephone
> junction box outside the house).  Is it possible to connect the voip
> adapter to this line and then rewire the D mark so that I would have
> voip on all of the phones in the house?

Sure, go ahead.  I'm not sure how much Canadian telcos are like US
telcos, but here, the phone company's line generally just plugs into
the NTI at the demarc point with a regular modular jack.  Unplug that
and plug your VOIP adapter's output into it and you get VOIP throughout
your house.  (Or just plug the VOIP adapter's output into some other
phone jack in your house on the same line.  Don't do this while the
phone company's line is still plugged in, though -- you could fry your
adapter.)  You can then stick the phone company's plug into the line
that goes to the computer room to get the ADSL in there, which is what
I assume you want.

If it's actually all on one set of wires throughout the house, that's a
little more complicated... there are 4 wires in a phone cable but each
phone line only uses two (red/green or yellow/black).  Normally when
you plug in a phone it uses red/green, which is considered "line 1." 
Yellow/black is "line 2."  

So the jack in the computer room is probably hooked up to yellow/black
(actually, red/green is probably hooked up in there too, just as line 2
instead of line 1 -- i.e., I bet they're swapped) while the rest of the
house is hooked up to red/green.  In this case, you can probably just
swap the wires at the demarc point: swap red for yellow and green for
black.  This puts your main phone line on the yellow/black pair (to
your computer room) and leaves the red/green pair unconnected to a
phone line.  You can then probably just use a two-line adapter in the
office to plug your VOIP adapter's output into the "second line" in the
computer room (which should be red/green, which is line 1 throughout
the rest of the house).  (If the jack in the computer room's not
actually hooked up to red/green, open up the jack to see if the wires
are in there but just not connected, and wire 'em up if you can. 
Failing that, you could run the VOIP adapter output back to the demarc
point and wire it in there.)

-- 
Jerry Kindall, Seattle, WA                <http://www.jerrykindall.com/>

        Send only plain text messages under 32K to the Reply-To address.
        This mailbox is filtered aggressively to thwart spam and viruses.

Thursday, August 31, 2006   5:30 PM
Jerry, thank you for the thoughtful and detailed response.  I will try
this within the next week.  I will let you know if it works.  THANKS
again for taking the time to write all of the detail.  No one else has
answered; so I guess only a specialist would have the expertise.  Earl
Williams,  Surrey, British Columbia