Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site mit-eddie.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!mit-eddie!smh From: smh@mit-eddie.UUCP (Steven M. Haflich) Newsgroups: net.dcom Subject: Re: Request for info on local building wiring Message-ID: <3312@mit-eddie.UUCP> Date: Sat, 15-Dec-84 14:31:14 EST Article-I.D.: mit-eddi.3312 Posted: Sat Dec 15 14:31:14 1984 Date-Received: Sun, 16-Dec-84 06:30:56 EST References: <243@decwrl.UUCP> Reply-To: smh@mit-eddie.UUCP (Steven M. Haflich) Organization: MIT, Cambridge, MA Lines: 13 There seems agreement that four conductors suffice for most terminals, but that RS232 to modems and other more exotic exotic may require. In the particular case of modems, why not just run the phone line directly to the user's location??? This will take fewer conductors than even the most degenerate RS232: two!! Actually, certain types of phone service connections, e.g. RJ41S/45S, use four, six, or more conductors. The extras do things like indicate whether the line should be conditioned for voice or data transmission, Such services are likely to become more common as time passes. Also, many currently-available and plausible non-modem devices still require more than four-wire RS232 -- certain printers for example.