Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/3/84; site enmasse.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!mit-eddie!genrad!panda!enmasse!mroddy From: mroddy@enmasse.UUCP (Mark Roddy) Newsgroups: net.dcom Subject: autodial on synchronous modems Message-ID: <413@enmasse.UUCP> Date: Mon, 24-Jun-85 18:22:26 EDT Article-I.D.: enmasse.413 Posted: Mon Jun 24 18:22:26 1985 Date-Received: Wed, 26-Jun-85 05:36:01 EDT Distribution: net Organization: Enmasse Computer Corp., Acton, Mass. Lines: 38 {} I'm faced with a design question on implementing autodial for low speed synch modems (i.e. 4800 bps.) The only synchronous modem I've got a spec for is a UDS 4800 model. Dialout is accomplished by: 1) driving pin 12 high; 2) driving DTR high; 3) waiting a specified time; 4) raising pin 25 high for 3.5 seconds; 5) providing high and low pulses on pin 25 corresponding to bell standard pulse dial signals. The questions are: 1) does anyone manufacture synchronous modems with some analogy to the Hayes protocol for async dial out? 2) Is UDS's method done by anyone else? (i.e. is this a standard?) 3) If the answer to question 2 is no, then is there a standard? 4) If the answer to 2 and 3 is no, then what dialout interface do other netlanders provide for their intelligent comm boards? 5) In fact, even if the answer to 2 or 3 is yes, I'd be interested in knowing how other people provide autodial for comm. boards. Please send mail, if there is interest I will post a summary of responses to the net. Thanks. -- Mark Roddy Net working, Just reading the news. (harvard!talcott!panda!enmasse!mroddy)