Date   : Fri, 18 May 1984 12:52:00 EDT
From   : "I. Larry Avrunin" <avrunin@Nalcon.ARPA>
Subject: Re: modem for cypher 855

Bob Tinker of DTNSRDC (tinker@dtrc) has developed a christensen protocol
(checksum) compatible program for the CDC Cyber 176 with a 2550 front
end.  Several system type changes were required due to the CDC full line
data transmission philosophy but it does work. It is being used with
NOS/BE.

Larry Avrunin