home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.dcom.modems
- Path: sparky!uunet!rde!ksmith!keith
- From: keith@ksmith.uucp (Keith Smith)
- Subject: Re: HELP! problems with 2-line phones
- Organization: Keith's Computer, Hope Mills, NC
- Date: Tue, 22 Dec 92 21:02:53 GMT
- Message-ID: <1992Dec22.210253.15328@ksmith.uucp>
- References: <1992Dec18.182626.4665@newshub.ccs.yorku.ca> <1992Dec22.003824.2898@combdyn.com>
- Lines: 60
-
- In article <1992Dec22.003824.2898@combdyn.com> lawrence@combdyn.com (Lawrence Chen) writes:
- >>not dropped when the other line rings. I have tried each phone
- >>individually and they all seem to cause line noise on the other line
- >>(line2) when line1 rings. These phones are essential and I was
- >>wondering if there was some way to suppress this overlapping effect.
- >>
-
- Yep. If you DON'T get noise with the other phones disconnected I would
- suggest that you route the modem number thru a knockout switch at your
- modem site. Run 2 pair from your CO to the modem site and hook up a
- DPDT switch like this:
-
-
-
- +------+To All Your Other Extensions
- | |-----------------------------+
- | Phone|-------------------------o o
- | Box |
- | | / /
- | |-------------------------o o
- | |-----------------------------+
- +------+From the Phone Co.
- o o------ To Your Modem
- +----------
-
- Then Simply throw the switch to your modem before you use it.
- Alternately you can make a forked RJ-11 connector, and skip the switch,
- but this would require a decent modem, and one that stayed plugged in
- all the time. The Modem must have a RELAY that DISCONNECTS it's phone
- plug once the modem is active on a connection. Most of the decent ones
- do. (Easy to test. Pick up a phone connected to the phone jack in the
- back of your modem while connected somethere, The phone should be
- dead.):
-
-
-
- +------+From the Phone Company Line
- | |----------------------------- Modem Line/Telco
- |Telco |----------------------------- Jack Pins 2/3
- |Box |
- | |
- | |Back for the Ext phones
- | |----------------------------- Modem Phone/Ext
- | |----------------------------- Jack Pins 2/3
- +------+
-
-
- A halfway competent phone cable jock could do this in about 15 minutes
- assuming your House wireing is a spider web from the CO box, and not a
- string. If you didn't mind running another wire, you could even get
- creative with 4 pair and knock the extension phones off either line (via
- switch) and use either line for the modem. This would surely be cheaper
- than a dedicated phone NUMBER and wire.
-
- NOTE: This is also what I do at MY house, and I have 2 line phones
- everywhere too!
- --
- Keith Smith uunet!ksmith!keith 5719 Archer Rd.
- Digital Designs BBS 1-919-423-4216 Hope Mills, NC 28348-2201
- Somewhere in the Styx of North Carolina ...
-