Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!uccba!spca6!kgw2!davea
From: davea@kgw2.bwi.WEC.COM (Dave Alverson)
Newsgroups: comp.sys.mac.comm
Subject: Re: Sending files from Mac to Ultrix with ZTerm
Message-ID: <608@kgw2.bwi.WEC.COM>
Date: 23 Jul 90 14:01:01 GMT
References: <2908@tellab5.tellabs.com> <6509.26939a0f@umiami.miami.edu>
Reply-To: davea@kgw2.UMD.EDU (Dave Alverson)
Organization: Xetron Corporation, Cincinnati, Ohio
Lines: 30

In article <6509.26939a0f@umiami.miami.edu> tcwan@umiami.miami.edu writes:
>
>We have the same problem here using a MicroVax running Ultrix 3.0. It'll hang
>on sending files from ZTerm to the Ultrix host, but downloading from the host
>has no problems (It's the fastest protocol I've found by far!). The error
>message is something like "ZRPOS returns zero" and ZTerm will keep retrying.
>
>I'm using ZTerm 0.85 and rz 3.00 dated 4-19-89.

There are two things to try.  First, check the "Escape Controls" option
in ZModem Parms.  Some digital switchs or term servers can swallow
some control chars and kill any transfer.  This option will cause
control chars to be sent as a two byte sequence.

Also, try putting a multiple of 512 in the Window Size option in
ZModem Parms.  This puts the protocol into a windowed mode (for
send only).  2048 is a good first guess for this option.

The message "ZRPOS <number>" is just the receiver saying Hey, I got
an error.  Please back up to file location <number>.

Also, note that some Unix box serial drivers may not be able to keep
up with data coming in full bore at 9600 bps.

  -- Dave


-- 
Z  Dave Alverson,   Cincinnati & Mason, Ohio
Z  Address: davea@kgw2.bwi.WEC.COM