[net.unix-wizards] MDM711 protocol questions

BYTE%mit-mc@sri-unix.UUCP (07/09/83)

From:  Roger L. Long <BYTE@mit-mc>

Is there a description of the multiple-file transfer aspect of the MDM7xx
protocol somewhere, or could some informed person provide one so that I
don't have to download the source and figure it out?  My thoughts are
to upgrade UMODEM (the UNIX version of the MODEM protocol transfer
programs) to understand and talk with MDM7xx.  Or has someone already
done this (if so, please let the rest of us share in your work).

Also, has any thought been given to upgrading the MMODEM program at
Mit to transfer multiple files ala MDM7xx? (please?!?!?)

	Thanks.

		-roger

jordan@mddc.UUCP (07/14/83)

If you're talking about Ward Christensen's MODEM7 protocol, then the only way
to transfer multiple files is for both the the sending & receiving computers
to know in advance how many files are going to be transferred and in what order.

MODEM7 does not transmit the name of the file when transmitting the file.  For
this reason, I find that the KERMIT protocol (from Columbia) is far better
for multiple file transfers.

			Jordan Bortz
			(..decvax!cbosgd!mddc!jordan)