Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!apple!xanadu!jeff
From: jeff@markets.amix.com (Jeff Crilly N6ZFX)
Newsgroups: comp.dcom.modems
Subject: Re: Hayes Smartmodem 9600 troubles (really USR problems)
Message-ID: <1991Apr2.193534.5056@markets.amix.com>
Date: 2 Apr 91 19:35:34 GMT
References: <1991Mar5.093318.2146@llustig.palo-alto.ca.us> <3829.27d4d360@hayes.uucp> <1991Mar18.211318.22290@dbase.A-T.COM>
Organization: AMIX Corporation, Palo Alto, CA
Lines: 47

In article <1991Mar18.211318.22290@dbase.A-T.COM> garyc@dbase.UUCP (Gary Carter) writes:
>
> [Stuff deleted...]
>
>I have some small experience with PEP and V.32.  Calling around Silicon
>Valley using a T2500 and a Microcom QX/V.32, occasionally I can't get
>a V.32 connection; other times, my V.32 connection will hang up after
                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>some length of time.  Most of the time, it works great, and is much nicer
^^^^^^^^^^^^^^^^^^^^
>than PEP for interactive use (such a running a text editor on the remote
>computer) - except for those unpredictable dropouts.
>
>But in my experience PEP NEVER FAILS TO CONNECT, and once connected,
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^
>PEP NEVER DROPS OUT.  It is totally reliable, industrial strength, a
^^^^^^^^^^^^^^^^^^^^
>year-in year-out proven workhorse.  Even for interactive edits, if the
>job is a small one, I will log in using PEP rather than V.32, in spite
>of the sluggish turnaround time, because of the absolute certainty that
>it will just work the first time.  And for file transfers, I always use
>PEP.

We have a handful of USR Dual standards and Telebit T2500s.  A few weeks
ago we had a power supply go out in a T2500.  While it was at the factory
I gave a USR dual standard to the guy who was using the 2500 (at his house).
He found that the USR would connect, but then hang up after a while.  
The modem at the other end was a telebit T2500.  It was really annoying.
During some testing (of yet another problem with the USR) I found that 
sometimes when the T2500 calls the USR the link will drop after some time.
The USR ati7 says the reason was Link Disconnect Received.  Anyhow after
upgrading the USR to 9/29/89 roms, the problem went away.

My point is that there are lots of V.32 mfrs whose modems might have bugs.
When you connect V.32, you are not neccessarily connecting to another
telebit V.32.  (Calling around Silicon Valley, [BBSs I take it?] you are
probably getting USRobotics modems at the other end.)   Also, I would 
find it rare if some mfr had this kind of problem with their modems at 
*both* ends.  

When you connect PEP, there is always a telebit at the other end.  Telebit
has the luxury of not having to worry about compatibilty issues with
other mfrs modems.  The same argument can be made for HST.

Jeff Crilly (N6ZFX)
AMIX Corporation  2345 Yale Street  Palo Alto, CA  94306
jeff@markets.amix.com, {uunet,sun}!markets!jeff, N6ZFX@N6IIU.#NOCAL.CA.USA