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From: dwight@timeb.UUCP (Dwight Ernest)
Newsgroups: net.dcom
Subject: Re: modem info
Message-ID: <45@timeb.UUCP>
Date: Sun, 13-Jan-85 09:54:54 EST
Article-I.D.: timeb.45
Posted: Sun Jan 13 09:54:54 1985
Date-Received: Mon, 14-Jan-85 03:41:39 EST
References: <1362GMS@PSUVM> <2678@ihldt.UUCP> <2@amdimage.UUCP>
Organization: Time, Inc., New York City
Lines: 35

> > ... If the DTEs will maintain DTR when DCD drops for a period of
> > two seconds or less, most modems will maintain the connection. 
> > John Haller
> 
> Actually, the definition of a carrier loss us usually a loss of
> carrier for 1 second +/- 0.1 sec.  This means that most modems
> will disconnect after one second of carrier loss, and a call waiting
> beep is usually longer than that.
>  Chris Moore 

Once again, however, this point up the fact that some modems
don't act that way, but leave it up to the communications
software. For instance, I use a Hayes Smartmodem-1200
with my Compaq portable P.C. under PCDOS 2.1; the comm
s/w is YAM (Yet Another Modem) by Chuck Forsberg at Omen
Technology, and I like it very much, partially because
it permits me to define the amount of time that passes before
a loss of carrier is interpreted as a loss of connection,
in the range of about 0.05 seconds to about 15 seconds.

(BTW, if anyone would like further info about YAM, let me
know via mail.)
-- 
		--Dwight Ernest	KA2CNN	\ Usenet:...vax135!timeinc!dwight
		Time Inc. Editorial Technology Group, New York City
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