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- Path: sparky!uunet!newsserver.pixel.kodak.com!laidbak!tellab5!mcdchg!att!att!drutx!druwa!klf
- From: klf@druwa.ATT.COM (FranklinKL)
- Newsgroups: misc.consumers
- Subject: Re: Help With phones.
- Keywords: Two lines, and a suggestion
- Message-ID: <22784@drutx.ATT.COM>
- Date: 8 Dec 92 20:04:38 GMT
- Sender: news@drutx.ATT.COM
- Distribution: misc
- Lines: 49
-
- I've been in the telephone industry for almost 30 years and can tell
- you that if they think they can snow you, they will. You have to KNOW
- what they can and can't do and insist on getting what you want.
-
- If your house is relatively new, 10-20 years, and was wired by the builder
- or a contractor, it almost certainly has 4-wire cable running to all the
- the jacks. The 4 wires are in pairs, generally a red-green pair and a
- black-yellow pair. These colors are pretty standard for residential
- cabling. If only a single line is installed, it will most likely be
- on the red-green pair, leaving the black-yellow pair free. You can
- easily check the wiring by opening up a jack.
-
- Now go out to the "demarc" or the point where the telephone company wiring
- enters your house. You will very likely be able to get the cover off the
- demarc block and can then check how many wires are coming from the
- phone header or pole. Usually it too, will be a 4 wire configuration
- with a red-green and a black yellow pair. More often that not, the
- unused pair will be folded back and not connected to the demarc.
-
- When you order the new line, tell them that you have a spare pair in
- the cable, although, I'd suspect that they will check that out for themselves
- when the installer comes out to connect to the pole or header. If
- possible, intercept the installer and tell them that you want the second
- line run on the black-yellow pair. They'll know what you mean.
-
- Once the second line appears at the demarc, it's all yours. Usually,
- modern jacks mount in a box much like an electrical outlet box. If that's
- so, it's a piece of cake. Radio Shack and many other stores will
- sell dual jack assemblies that fit in the box. All that is required
- is to replace your existing single jacks with dual units, running the
- red-green pair to one and the black yellow pair to the other.
- One caution. The two wires in a phone line are referred to as "tip"
- and "ring" in the industry, for reasons I won't go into here. In
- general, phones are not polarity sensitive, but some cheaper tone dial
- phones may not have a polarity guard and will require hooking up in the
- correct polarity in order to originate calls. This is also true of
- cheaper auto-dial modems. To test, hook up a phone, go off-hook and
- you should get dial tone. If you can't break dial tone, that is the
- first digit you dial doesn't stop dial tone, you have the polarity
- reversed.
-
- Note that if you have older wiring, or wiring not installed to telephone
- company standards, your mileage may vary significantly. Good luck.
-
- --
- Ken Franklin They say there's a heaven for people who wait
- AMA And some say it's better but I say it ain't
- GWRRA I'd rather laugh with the sinners than cry with the saints
- DoD #0126 The sinners are lots more fun, Y'know only the good die young
-