Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uwm.edu!bionet!ig!ames!pacbell!hoptoad!hsfmsh!daemon
From: tnixon-vax@hsfmsh.UUCP
Newsgroups: comp.dcom.modems
Subject: 9600bps modems compatibility
Message-ID: <2442@hsfmsh.UUCP>
Date: 5 Mar 90 17:26:06 GMT
Sender: daemon@hsfmsh.UUCP
Organization: Hayes Microcomputer Products, Inc.  Norcross, Georgia
Lines: 12

- In a nutshell, which 9600 bps modems are compatible with which
- other ones?  What are the rules governing compatibility?

CCITT V.32 is the only international standard for full-duplex 
transmission on dial-up telephone lines.  The other proprietary 
schemes (Hayes V-series 9600, USRobotics HST, Microcom MNP6, 
Racal-Vadic 9600VP, Telebit PEP, etc.) are all incompatible with 
each other.  You either have to have a modem that matches the 
person you're calling, or both modems have to support V.32, if 
you're going to communicate at higher than 2400bps.

   -- Toby Nixon, Principal Engineer, Hayes Microcomputer Products