[comp.dcom.telecom] Connecting a Modem to a Merlin

Nomad@harvard.harvard.edu (07/20/89)

I would like to connect a modem to the Merlin system at work but need a bit
of help.  The phones that we use have an extra jack on the bottom for use (I
am told) with a speakerphone or a "universal device interface".  The people
from AT$T are quite willing to sell me a little box to plug into it for a sum
over $250.00 (which seems a bit high for what is undoubtedly a very simple
little box).

Is there a way to connect the modem without the interface box to either the
phone itself or to the wall jack?  Will I be forced to run a line back to the
service entrance?

nomad@cup.portal.com

rtobier@uunet.uu.net (Richard Tobier) (08/05/89)

In response to Nomad who asked :

>I would like to connect a modem to the Merlin system at work but need a bit
>of help.  The phones that we use have an extra jack on the bottom for use (I
>am told) with a speakerphone or a "universal device interface".  The people
>from AT$T are quite willing to sell me a little box to plug into it for a sum
>over $250.00 (which seems a bit high for what is undoubtedly a very simple
>little box).

When I was a installer, I discovered a way to hook up analog devices
(Modems, Fax) to electronic systems. The parts may cost you $15 - $20.

Disclaimers:
1. The Electronic Phone system must use a dedicated voice pair (tip and ring).
2. The analog devise is only good for originating calls.

Parts:
1. One RJ 31x
2. 12 inches of cross connect wire

Installation:
1. Mount the RJ 31x within 12 inches of the jack of the station where the
   devise is to be installed.
2. Connect the cross connect wire to terminals 1 and 8.
3. Connect the tip and ring from the station wiring to terminals 4 and 5.
4. Connect the other end of the cross connect wire to where the station wire
   was terminated.

How to use:
1. Plug analog devise into the RJ 31x.
2. Select the line on your electronic phone.
3.
a. MODEM - from your computer type ATDT ect.
b. FAX - using your monitor function on your electronic phone dial the
number, listen for the tone, hit the connect button on the machine
and away you go.

You can buy a RJ 31x at any Graybar or even Radio Shack. It is also known
as an alarm interface.

If you have questions call me at (305) 797-5713 or email encore.encore.com!
gould!rtobier

Richard Tobier
Telecommunications Analyst
Encore Computer Corp. (FKA Gould Inc, CSD)