Path: utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!iuvax!bobmon
From: bobmon@iuvax.cs.indiana.edu (RAMontante)
Newsgroups: comp.sys.ibm.pc
Subject: Re: - DSZ Zmodem Rz/Sz Zcomm -
Message-ID: <15744@iuvax.cs.indiana.edu>
Date: 12 Dec 88 14:14:38 GMT
Reply-To: bobmon@iuvax.UUCP (RAMontante)
Organization: malkaryotic
Lines: 34

simon@ms.uky.edu (Simon Gales) writes:
>
>So, if I register it, does that enable zmodem transfers?

Nope, the unregistered DSZ I tried out does zmodem transfers in both
directions.

If you're connecting to your host via a network, that network's
involvement may be preventing successful zmodem transfers.  The "Sytek"
coax cable that I.U. employs does this, possibly because it imposes
XON/XOFF protocol on the connection whether the endpoints want it or not
(or possibly for another reason :-).  I have not been able to do any but
8th-bit-quoted-Kermit transfers over this irritating link, which is the
major link to most of the University's computers.

I can use zmodem on a C.S. Department (Ultrix (UN*X)) computer to which
I can dial in directly.  The dial-in requires that I use 7-bit-Even-parity
(using Procomm, Zcomm, and any other emulator I've ever tried), but I
think that DSZ ignores that.  Zmodem protocol also works over rlogins to
the other machines, once I've gotten that direct phone line.

To do a download, I give the host the command  "sz filename"; then I
either call up Procomm's ymodem-batch download protocol, or invoke DSZ
with the parameters "rz t" (I think the "t" parameter is correct).
Either one takes it from there, although DSZ remains as a dumb terminal
interface at the end, until I exit it with the F1 key, so I could start
further "sz ..." host commands if I wish.

"Helpful tip":  It's been suggested that if you get stuck in a zmodem
session, a long-enough string of ctrl-X's will eventually terminate
without having to hang up or hope for a timeout.  I recall being very
frustrated about this point, before I got zmodem working for me.

Hope this helps, as they say....