Date   : Sat, 25 Jun 1983 17:21:00 EDT
From   : Keith Petersen <W8SDZ@mit-mc>
Subject: MODEM protocol description

See AR60:CPM;MODEM2 PROTOC on MIT-MC, which is a file written by Ward
Christensen, the original author of the MODEM program.  The protocol
is described in detail.  Save yourself from re-inventing the wheel -
there are quite a few good public-domain program which run under CP/M
and support this protocol.  See CPM;BILLW MODEM for a description of
all known mainframe versions of MODEM.
--Keith