Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!elroy.jpl.nasa.gov!ames!uakari.primate.wisc.edu!aplcen!wb3ffv!ka3ovk!raysnec!shwake
From: shwake@raysnec.UUCP (Ray Shwake)
Newsgroups: comp.sys.mac.comm
Subject: Re: Slow transfer rate on Telebit
Message-ID: <269@raysnec.UUCP>
Date: 17 Mar 91 01:25:59 GMT
References: <13477@darkstar.ucsc.edu>
Organization: IRS/CI - Technical Solutions Branch
Lines: 15

pete@saturn.ucsc.edu (Peter Hughes) writes:

>	I have a telebit T2500 9600-baud modem.  I dial into a Unix
>network using VersaTerm Pro.  Kermit gives me a transfer rate of about
>30 bytes/sec, less than 3% of line capacity.  Xmodem crashes.

	The two modems may be "optimized" for different protocols, thus
giving lower performance than would be the case without such optimization.
Check out register S111. I have one modem set to S111=30 for UUCP transfers,
only because my News counterpart sets his to 255. If I call into my modem
from another Telebit and run kermit file transfers, throughput drops
substantially (from ~875 to ~160).

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uunet!media!ka3ovk!raysnec!shwake				shwake@rsxtech