Path: utzoo!attcan!uunet!cs.utexas.edu!sdd.hp.com!usc!apple!portal!cup.portal.com!schuster
From: schuster@cup.portal.com (Michael Alan Schuster)
Newsgroups: comp.dcom.modems
Subject: Re: Intel 9600EX...
Message-ID: <35888@cup.portal.com>
Date: 13 Nov 90 00:57:50 GMT
References: <1990Nov4.093936.26403@dhw68k.cts.com>
Organization: The Portal System (TM)
Lines: 17

PC Connection today said that their next shipment of 9600EX modems
will be held up for a bug fix. Someone on CompuServe who has evaluated
several V.32 modems discovered a bug (confirmed by Intel) in the handshake
sequence. It seems that if you lock the DTE rate to 38400 and connect
with a USRobotics Courier 2400 (or perhaps other non-error-correcting
2400's) there is a problem with the handshake. I don't know, however, if
this is the bug Intel was referring to.

Today I called the Intel BBS (which presumably has 9600EX's online) in
V.32/V.42bis mode using my USR Dual Standard. Reproducably and
consistently the modems dropped the connection on the same character
on the same screen of the menus. The USR link diagnostics said the
connection was dropped because of "extra stepup". This sounded V42-ish
to me, so I disabled V.42bis data compression and called again in
MNP5 mode. Voila ... no problem. I've used this modem for months
and connected with dozens of different brands, etc. with no problem. Does
Intel have a V.42bis bug as well?