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- Xref: sparky comp.dcom.modems:19354 sci.electronics:22507 uk.misc:2580
- Newsgroups: comp.dcom.modems,sci.electronics,uk.misc
- Path: sparky!uunet!das.wang.com!wang!djenkins
- From: djenkins@wang.com (Dave Jenkins)
- Subject: Re: UK phone circuits vs. US phone circuits
- Organization: Wang Labs, Lowell MA, USA
- Date: Tue, 12 Jan 1993 21:34:18 GMT
- Message-ID: <C0rFx7.G88@wang.com>
- References: <C0oMBu.BC@apricot.co.uk> <C0rA5p.5Lo@panix.com>
- Sender: news@wang.com
- Nntp-Posting-Host: bohica.wang.com
- Lines: 29
-
- oppedahl@panix.com (Carl Oppedahl) writes:
-
- >In <C0oMBu.BC@apricot.co.uk> marcusj@apricot.co.uk (Marcus Jenkins) writes:
-
- >>Do all US circuits really only have the 'tip'
- >>and 'ring' connections?
- >All RJ11 circuits, yes. And that covers most
- >single-line telephones, answering machines, fax
- >machines, and modems.
-
- That may be true for "All NORMAL RJ11 circuits", but,...
-
- It is possible to have an RJ11 connector with all 4 wires used. There are
- special lines called DID (Direct Inward Dial) lines where you have oodles of
- phone numbers that all map onto one line with an RJ11 on it. With this type
- of line when you dial, for example, 967-43XX you would be connected with this
- line and the receiving device would be fed what numbers XX were so 100 folks
- can have the illusion of having their own private fax numbers. Ideally you
- would have the XX map to some e-mail address and forward the image file to
- user XX's mailbox. In this case all 4 wires ARE used and polarity matters.
-
- >>Marcus Jenkins apricot!marcusj@relay.EU.net
- Gee, I wonder if we are related?
-
- --
- David E. Jenkins Home: (508) 632-4164 Wang Labs, Inc.
- 52 Norman Street Work: (508) 967-7284 M/S 014-690
- Gardner, MA 01440-1916 Fax: (508) 967-2212 1 Industrial Ave.
- Packet: N1MXV@N0ARY e-mail: djenkins@wang.com Lowell, MA 01851
-