home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky comp.archives.msdos.d:98 comp.binaries.ibm.pc.archives:5205
- Newsgroups: comp.archives.msdos.d,comp.binaries.ibm.pc.archives
- Path: sparky!uunet!spool.mu.edu!uwm.edu!linac!tellab5!toth
- From: toth@tellabs.com (Joseph G. Toth Jr.)
- Subject: Re: *** WHAT'S THE BEST COMM PROTOCOL ***
- Message-ID: <1992Dec22.140352.26232@tellab5.tellabs.com>
- Sender: news@tellab5.tellabs.com (News)
- Nntp-Posting-Host: devhp
- Organization: Tellabs, Inc. Lisle IL
- References: <1992Dec21.181829.4391@porthos.cc.bellcore.com>
- Date: Tue, 22 Dec 1992 14:03:52 GMT
- Lines: 49
-
- In article <1992Dec21.181829.4391@porthos.cc.bellcore.com> dml7@navaho.cc.bellcore.com (lee,danny) writes:
- >i'm having trouble deciding which communications protocol package to
- >use on my pc. i was using kermit and still using it. however,
- >someone mentioned to me that zmodem was much better and faster.
- >one can assume that speed and reliability are the main factors
- >to consider. which one (kermit or zmodem, or any other ones)
- >would permit one to download/upload most efficiently and most
- >quickly? obviously, modem speed plays a role as well. please
- >e-mail me below or post. i will summarize should there be enough
- >interest. thanks in advance.
- >
- >dan
- >
- > ________/----------------------/______
- > / Danny / dml7@cc.bellcore.com / 1992 /
- >/_______/----------------------/______/
-
-
- While xmodem and zmodem might provide some percentage gains (sometimes
- small, somtimes rather large[in the range of 30% or so]) in file transfer
- rate, it is all meaningless if they just won't work for you.
-
- Kermit always uses a standard set of ASCII characters for transmitting
- the data (even in binary format?) that is immune to the problems that
- arise using the other transfer formats when the data being transferred
- is a XON, XOFF or any of a number of other control characters used in
- text flow/format control. This makes kermit the format of choice for
- users who have there system connected to a data network via a terminal
- server or 4-line rs-232 connection that does not have hardware flow
- control, thus requiring XON/XOFF flow control.
-
- I have looked at the man page and help output for xmodem, and do not
- see any way of altering it to avoid the XON/XOFF problem. If it's
- there, I'm sure we'll hear about it.
-
- It's kind of like the archiver controversy;
- each may have some aspect that is better than the others,
- and you have to use the appropriate one for the target of your operation,
- so you need to keep them all around to use when the need arises.
-
- BTW - our site has yet to get the comp.archives.msdos.d, so I can't
- followup to that yet. Sorry, Timo.
-
-
-
- --
- --------------------------+---------------------------------
- Joseph G. Toth Jr. | uunet!tellab5.tellabs.com!toth
- Tellabs Operations, Inc. | toth@tellabs.com
-