Zmodem upload problems

[Don Rainwater]

	I have a VAX 8650 running Ultrix 3.0.  Terminal connections are
via DECservers.  My port is running at 19.2k, and my "terminal" is a Mac II.
The Mac is running ZTerm .85, and I have the rzsz package from 5/89
running on the Ultrix system.

	I'm able to download (sometimes very large) files from Ultrix
without any trouble, but uploads don't even get past the first byte.
The error I get is "ZRPOS=0".  I have the same problem trying to upload
from an IBM/PC-AT compatible running DSZ, so I think we can eliminate
the Mac from the list of suspects.

	Has anyone been able to successfully upload files to an Ultrix
(or other Unix) host?  Any help would be greatly appreciated.  Kermit is
just too slow.