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From: jbr@key.COM (Jeff Rubin)
Newsgroups: comp.dcom.modems
Subject: Re: T2500 disconnect "problem"
Keywords: T2500 disconnect
Message-ID: <2610@key.COM>
Date: 20 May 91 04:31:19 GMT
References: <1991May18.171441.865@telebit.com>
Reply-To: jbr@key.COM (Jeff Rubin)
Organization: Key Computer Laboratories, Fremont
Lines: 31

In article <1991May18.171441.865@telebit.com> brian@telebit.com (Brian Lloyd) writes:
>I promised that I would look into the problem of connections going
>down between a T2500 and other vendors' modems.  The folks in
>Telebit's technical support and engineering groups are still looking
>into the alleged problem.  The evidence that they have is rather skimpy
>but they say that the reports that they have only involve connections
>to a very few modems when MNP4 is the error correction scheme.  They
>are still trying to reliably reproduce the problem.
>
>They did say that there have been no reports of problems where V.42
>(LAPM) is being used for error correction and to use V.42 instead of
>MNP4 if there is any question.

Brian,

I am the original poster of the article about T2500 disconnects.  I clearly
mentioned in the article that the disconnects certainly happen in V.42 LAP-M
mode (as well as in MNP4 and with no error control also).  I also spoke
with technical support and Randy there is well aware that this problem
happens in V.42 LAP-M.  He watched his T2500 hang up on me during a zmodem
file transfer using V.42 LAP-M.  He said he would send me a beta version of
the T2500 firmware which we tried out, but I have still not received it.

I have tried mailing a report of my conversations with technical support
to you, but mail to the address in your signature bounces.  I have also
left you voice mail (last week) but I haven't heard back from you yet.

I'm willing to help out in reproducing the problem or trying a fix.  Please
email me at jbr@key.com and let me know what I can do to help.

-- Jeff