Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!unmvax!pprg.unm.edu!hc!lanl!beta!ttp
From: ttp@beta.lanl.gov (T T Phillips)
Newsgroups: comp.binaries.ibm.pc.d
Subject: Re: Telix and file transfers
Summary: Telix DOWNloads OK, but not UPloads:  Me To
Message-ID: <24261@beta.lanl.gov>
Date: 28 Apr 89 20:24:40 GMT
References: <294.2453DF72@mudos.ann-arbor.mi.us> <3816@silver.bacs.indiana.edu>
Distribution: na
Organization: Los Alamos National Laboratory
Lines: 18

In article <3816@silver.bacs.indiana.edu>, burleigh@silver.bacs.indiana.edu (frank burleigh) writes:
>
> Although I can reliably DOWNload files with sz/Telix 3.11, I cannot
> UPload them with Telix/rz.  X and Y-modems UPloads also fail.  It's as
> though they never start.
> 
> This is on an Ultrix system through an Ungermann-Bass terminal server.

In our setup, I connect to a VAX 7800 runing Ultrix 3.?.
However, for security reasons, we go thru a multiplexer, an
encryptor, a decryptor, an unmultiplexer, a so called keyboard
concentrator, a distributed processor server, and finally to the
VAX.  On uploads this whole system chokes on the problem of
sending long packets up followed by some kind of acknowledgement
down.  However, if I bypass our "high-speed" link, and use,
instead, a "slow" 2400 baud dial up line direct to the keyboard
concentrator, the Zmodem upload works just fine.  The moral is
don't have too much hardware between you and the host computer.