Cet·IMUNICATIONS SECTION 6, 7
SYNCHRONOUS PROTOCOLS
6. 7 To provide the fast, high integrity cor.imunication required by
n1ost mainframe computers, BUi\TER has a synchronous data
communication capability.
6. 7.1
VER.VO:lF
Communication takes place using synchronous transmission of data
blocks. These blocks are checked using check characters and
acknowledged as appropriate using particular protocols.
Currently available as a factory option is the IBM 2780*
communication protocol providing the bisynchronous
communications. Other protocols are in development.
IBM 2780 ON HUNTER
BACKGROUND
The IBM 2780 is a very popular data transmission terminal used
for remote job entry, The transmission protocol developed for
this device has been widely implemented on other mainframes to
the extent of becoming a de facto industry standard. HUNTER's
implementation min:ics 2780 protocol to provide well proven, fast
and extremely reliable data transfers.
IBM 2780 is used for batch entry by use of "job cards", HUNTER
is easily programmed to simulate the use of job cards providing
all the processing facilities normally available on a remote
terminal.
HUNTER is the most advanced portable to offer a comprehensive
implementation of IBM 2780 in true synchronous mode,
ADVANTAGES
This well proven and sophisticated protocol gives HUNTER
reliable, high speed communications over relatively poor data
links such as the public switched telephone network at speeds as
high as 2400 baud.
Use of this standard provides access to a wide range of
mainframe computer systems, directly and without need for
supporting equipment. Data files can be exchanged between
HUNTER and mainframe with great flexibility, convenience and
dependability.
*NOTE: IIft and 2780 are registered trademarlcs of IIft Corp,
PAGE 6 - 17
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