Path: utzoo!attcan!uunet!wuarchive!julius.cs.uiuc.edu!apple!goofy.apple.com!esmith From: esmith@goofy.apple.com (Eric Smith) Newsgroups: sci.electronics Subject: Re: Identify device please? Message-ID: Date: 23 Sep 90 01:55:37 GMT References: <10566@hubcap.clemson.edu> Sender: usenet@Apple.COM Organization: Frobozz Magic Widget Company Lines: 23 In-reply-to: rbrink@hubcap.clemson.edu's message of 21 Sep 90 21:02:02 GMT In article <10566@hubcap.clemson.edu> rbrink@hubcap.clemson.edu (Rick Brink) writes: I have a "black box" I picked up at a yard sale for a buck. It's about 1"x3"x6", manufacturer: Hayes Microcomputer Products inc. and labeled: microcoupler....off hook. It has an RJ14 jack (4 wires), and a din 10 plug with a 5inch multicolor riboncable terminating in a db25 (mounted in a box .75"x.75"x2.5" with flanges that look like they should fit a pc card opening.) The Microcoupler was used with 300 baud modems Hayes made for the Apple II and the S100 bus. It is a DAA (data access arangement), a holdover from the days when you couldn't connect just anything to your phone line. It is basically just a telephone line interface. As someone else suggested, it will allow you to take the phone on and off hook (which can also be used for pulse dialing). I believe it also contains the 2 to 4 wire hybrid, so it has audio in and out for a separate modem. It may also give a ring indication. -- Eric L. Smith Opinions expressed herein do not necessarily reflect those esmith@apple.com of my employer, friends, family, computer, or even me! :-)