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Path: utzoo!watmath!clyde!cbatt!gatech!lll-lcc!ptsfa!well!ewhac
From: ewhac@well.UUCP
Newsgroups: comp.dcom.modems
Subject: 2400 Baud MNP Correction Synchronization
Message-ID: <2607@well.UUCP>
Date: Wed, 18-Feb-87 04:33:11 EST
Article-I.D.: well.2607
Posted: Wed Feb 18 04:33:11 1987
Date-Received: Thu, 19-Feb-87 06:58:20 EST
Reply-To: ewhac@well.UUCP (Leo 'Bols Ewhac' Schwab)
Organization: Whole Earth 'Lectronic Link, Sausalito, CA
Lines: 40
Summary: Do it work or don't it?

[ NO CARRIER ]

	Whether or not this question has been beaten into the dirt before, I
don't know, as I haven't paid much attention to this group (when 50% of the
subject lines say "2400 baud modems," you tend to start ignoring a lot of
things).  So here goes.

	I have a MultiTech 224E error correcting modem.  It's got automatic
fallback, both flavors of Hayes compatability, etc.  It also has MNP error
correction in hardware.

	The manual states that, if I issue a certain command (AT&E1), the
modem will automatically do handshaking upon connection to determine if the
modem on the other end knows what to do with MNP, and if so, connect with
MNP.  Otherwise, it will connect normally.

	I've been having trouble with this.  When I call up some local
non-MNP modems in Auto-Reliable mode (as the manual calls it), I get
garbage, as though the modem I'm calling is running at the wrong baud rate.
Sometimes (rarely), this doesn't happen, and I get a good connection (with a
non-MNP modem (by the way, I've never connected with an MNP modem)).

	Am I doing something wrong, or is the act of MNP handshaking causing
the destination modem to see a framing error, which many systems interpret
as a signal to change baud rates?

	Help!  I'd like to be able to use MNP whenever possible.
ADV-thanks-ANCE.

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