Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!linus!decvax!brl-bmd!Telecom-Request@mit-mc From: Telecom-Request%mit-mc@brl-bmd.UUCP (Telecom-Request@mit-mc) Newsgroups: fa.telecom Subject: TELECOM Digest V4 #25 Message-ID: <804@brl-bmd.UUCP> Date: Tue, 21-Feb-84 18:48:07 EST Article-I.D.: brl-bmd.804 Posted: Tue Feb 21 18:48:07 1984 Date-Received: Wed, 22-Feb-84 04:40:57 EST Lines: 59 TELECOM Digest Wednesday, 22 Feb 1984 Volume 4 : Issue 25 Today's Topics: Issue #23 Cure for Vadic Triple Modem Problem Statistical Multiplexors and inverse multiplexing does anyone care what is happening in the SW ? Yugoslav telephone security. Re: TELECOM Digest V4 #24 ---------------------------------------------------------------------- Date: 20 Feb 1984 2103-EST From: Jon SolomonSubject: Issue #23 Due to a error on my part, there was no Issue #23. Sorry for any inconvenience. --JSol ------------------------------ From: vortex!lauren at RAND-UNIX Date: Mon, 20-Feb-84 00:39:48-PST Sender: Lauren Weinstein Subject: Cure for Vadic Triple Modem Problem So bunky, you say you got yourself a Racal-Vadic triple modem (3451-series) and you have some problems with it? You say that sometimes in auto-answer mode it seems to hang offhook, making it impossible for any new calls to arrive? You say that when this happens it refuses to respond to DTR and only resets if you cycle the power or fiddle with the mode toggle switch (if you have one, that is)? Is that what's bothering you, bunky? WELLLLL! Lift up your head and greet the sun, 'cause a solution does exist -- and it doesn't even involve hydrochloric acid or jackhammers! Seriously, though, many persons have reported problems with triple modems getting into a strange wedged condition from which it is difficult to escape. Both manual dial and autodial triples have shown this behavior, which is characterized by the modem being offhook, sending a 212 carrier, and having both the HS and DSR lights lit. Only cycling the power or performing a software reset (by flipping the toggle switch between auto and manual on the autodial modems) will clear this condition; the modem is oblivious to DTR. After having this occur repeatedly on the main Vortex dialup line, I started harassing the engineers up at Racal. Actually, they were quite helpful, once they realized that I knew what I was talking about and hadn't plugged the RJ-11C phone plug into an AC wall outlet! After talking with three different engineers and having them duplicate ***Sender closed connection*** === brl netread error from MIT-MC at Tue Feb 21 18:26:57 ===