Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!hayes!tnixon
From: tnixon@hayes.uucp
Newsgroups: comp.dcom.modems
Subject: Re: Question about a Codex Modem
Message-ID: <3944.28327e32@hayes.uucp>
Date: 16 May 91 12:42:26 GMT
References: <1991May14.033353.2407@panix.uucp>
Organization: Hayes Microcomputer Products, Norcross, GA
Lines: 22

In article <1991May14.033353.2407@panix.uucp>, joseph@panix.uucp
(Joseph R. Skoler) writes: 

> I came across a Codex LSI 48/V.27 bis/ter modem and was wondering
> if someone could tell me what its use is.
> 
> What speed is it?  Can it be used on regular telephone lines,
> or does it need a special line? 

V.27 in general defines a 4800 bps modem (sort of like Bell 208) 
with a 2400bps fallback mode, and a 75bps secondary channel.  
V.27bis is a four-wire leased line version, and V.27ter is a 
two-wire dial-up half-duplex version.  You can use it on standard 
phone lines, but it's probably not going to do you much good.  For 
one thing, you'll need a compatible modem on the other end, and it's 
probably synchronous-only.

-- 
Toby Nixon, Principal Engineer    | Voice   +1-404-840-9200  Telex 151243420
Hayes Microcomputer Products Inc. | Fax     +1-404-447-0178  CIS   70271,404
P.O. Box 105203                   | UUCP uunet!hayes!tnixon  AT&T    !tnixon
Atlanta, Georgia  30348  USA      | Internet       hayes!tnixon@uunet.uu.net