dickmc@BRL-TGR.ARPA (10/27/84)
From: Richard McGee <dickmc@BRL-TGR.ARPA> On our UNIX systems we have a number of programs for transferring files from UNIX to CP/M and vice versa. I use KERMIT as well as UMODEM and UC from time to time. I was looking at the man page for UMODEM and UC and I saw that other protocols could be specified for transfer. The following are mentioned: "CP/M User's Group XMODEM" protocol TERM II File Transfer Protocol (FTP) Number 1 TERM II File Transfer Protocol Number 4 for packetized file up/downloading. TERM FTP 3 (CP/M UG) TERM II/TERM III File Transfer Protocol 1 developed by Richard Conn Would someone enlighten me as to what the differences are between these protocols, robustness, etc.? I use MDM730 on my CPM side and the default protocol which is TERM FTP 3 (CP/M UG), I think. I would hate to be missing out on something. Richard McGee, dickmc@brl-tgr.arpa
RCONN@SIMTEL20.ARPA (10/29/84)
From: Rick Conn <RCONN@SIMTEL20.ARPA> The other protocols, namely TERM II FTP 1, TERM II FTP 4, and TERM III FTP 1 are variations on the MODEM2 (MODEM7 Checksum) protocol. If you don't have TERM II, you aren't missing anything. TERM II FTP 1 is just slightly more survivable than MODEM2 (I have seen it work where MODEM2 failed), and TERM II FTP 4 is a 7-bit version of FTP 1. TERM III FTP 1 is still being revised (TERM III is not out yet), and it supports remote servers and a distributed virtual machine starting at the data link layer. As a bottom line, If you have been able to use FTP 3 (the MODEM2 protocol) successfully, I recommend you keep on with MODEM2. The additional survivability of FTP 1 of TERM II is not needed, and certainly not TERM II FTP 4. Rick -------