Newsgroups: comp.dcom.modems
Path: utzoo!henry
From: henry@utzoo.uucp (Henry Spencer)
Subject: Re: Modem control lines
Message-ID: <1989Oct16.173852.18735@utzoo.uucp>
Organization: U of Toronto Zoology
References: <413@belltec.UUCP>
Date: Mon, 16 Oct 89 17:38:52 GMT

In article <413@belltec.UUCP> lance@belltec.UUCP (Lance Norskog) writes:
>I have a peculiar question.  Do old-style analog modems pass through the 
>CTS/DTS signaling along with the data, or do they ignore it? ...

It's not clear what you're referring to, since there is no "DTS" line.
In any case, CTS, RTS, DSR, and DTR (among others) are all for signalling
between the *host* and the *modem*, not between the two hosts.  So it is
meaningless to speak of them being "passed through".

And incidentally, none of them is a flow-control signal, despite popular
misconceptions (and extensive non-standard use for that purpose).
-- 
A bit of tolerance is worth a  |     Henry Spencer at U of Toronto Zoology
megabyte of flaming.           | uunet!attcan!utzoo!henry henry@zoo.toronto.edu