Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!sun-barr!ames!apple!oliveb!stratus!cloud9!jjmhome!junkyard!joe
From: joe@junkyard.UUCP (Joseph Sarkes)
Newsgroups: comp.dcom.modems
Subject: Re: the "Transparency" of MNP...
Summary: why
Message-ID: <560@junkyard.UUCP>
Date: 5 Dec 89 23:39:38 GMT
References: <89Dec4.212759est.57389@ugw.utcs.utoronto.ca>
Lines: 16

In article <89Dec4.212759est.57389@ugw.utcs.utoronto.ca>, CS117341@YUSol.BITNET (Norman) writes:
> >>Oh, on a (slightly) related note, I've noticed that when connecting
> >>to non-MNP modems with MNP enabled on the T2500 results in an
> >>unusable connection.  Maybe I'm mistaken, but I thought MNP was
> >>supposed to be a transparent protocol negotiated by both modems
> >>after they connect.  Does anyone have any suggestions?

My understanding of what is happening is that if the machine being called
is set up to echo (full duplex) characters sent to it, it is quite easy
for the mnp modem to get confused and assume that it is talking to another
mnp modem, and then just gets hung in trying to talk mnp to the other
modem, which is just echoing what the mnp modem is transmitting for
negotiation. Thus the non mnp modem "looks" just like an mnp modem that
is sending the negotiation data. Are you confused yet????

Joseph Sarkes	(junkyard!joe)