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Path: utzoo!watmath!clyde!cbosgd!ihnp4!ihlpm!terry2
From: terry2@ihlpm.UUCP (t. nelson)
Newsgroups: net.micro.apple,net.dcom
Subject: Data Protocol Question
Message-ID: <557@ihlpm.UUCP>
Date: Tue, 29-Oct-85 16:49:50 EST
Article-I.D.: ihlpm.557
Posted: Tue Oct 29 16:49:50 1985
Date-Received: Wed, 30-Oct-85 07:31:22 EST
Distribution: net
Organization: AT&T Bell Laboratories
Lines: 23
Xref: watmath net.micro.apple:2275 net.dcom:1415


  I use the Apple Access II software for my communication needs.  
Up until recently those needs have only been to communicate
from home to the main-frame computer at work.  When I want to
download a file into my apple, I open a recording file in Access
II and tell the main frame to concatenate (cat in UNIX) the file.
I am now exploring the world of Bulletin Boards.  Most seem to 
use various forms of data exchange protocol like XMODEM or
XMODEM/CRC.  Access II uses Christensen (sp?) protocol.  I have
been told that XMODEM and Christensen protocols are the same.
Is this true?  What's the difference between XMODEM, XMODEM/CRC
and some other popular protocols?  I have used Christensen protocol
between two Apples and it works fine (slow but fine).

          Thanks in advance.

-- 

..ihnp4!ihlpm!terry2   =-=-=-=-=-=-=-=-=-=-=-=-=-   "All this is
                       |      Terry Nelson      |   because of me
      Keep             | AT&T Bell Laboratories |   and not my
       It              |  Naperville, Illinois  |   employer!"
        Warm           =-=-=-=-=-=-=-=-=-=-=-=-=-