SNA NRJE User/Programmer Reference Manual (30292-90006)

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Glossary
A
ASCII American Standards
Committee on Information
Interchange. A standard used by
computers for interpreting binary
numbers as characters.
B
Batch communications: Aform
of data communications in which
a facility collects data over a
period of time and then submits
collected information to a host
computer. Typical batch
communication consists of large
amounts of information
transmitted at infrequent
intervals.
BIND: An SNA command sent by
the host to NRJE. This command
specifies the detailed protocol
that NRJE accepts before
initiating an LU-LU session.
C
Chain: A sequence of RUs
constituting a recoverable entity.
Communications controller: A
front-end processor which
provides an interface between the
communications facilities and a
computer. IBM provides
programmable and
non-programmable
communications controllers. An
INP is a communications
controller.
Console: A logical device
through which commands are
transmitted to the host job entry
system, and responses (messages
generated by the host) are
received by NRJE.
D
Data set: In IBM terminology,
any file.
DD: An IBM JCL command
defining a data set.
F
FM header: An SNA Function
Management header. These
headers select destinations or
sources for subsequent data
transmission and supply
information for other data
management tasks.
Formid: A special form identifier
for output data sets, whichis used
as a key into a Lookup Table of
file equations. A formid is a string
of eight characters or less. It is
composed of alphanumeric
characters, IBM National
characters (#, $, or @), or a period
(.). A formid reference, as in a
SUBMIT command, must be
delimited by single quote marks;
for example,
‘formid’ .
H
Half-session: In SNA, a
component that provides FMD
services, data flow control, and