Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84 exptools; site ihlpm.UUCP 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 =-=-=-=-=-=-=-=-=-=-=-=-=-