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

234
Output management: The
ability to route output by using
special form identifiers (formids)
in the job JCL. The formids are
used to key into a Lookup Table
that maps the formid to a file
equation identifying the final
destination of the output.
P
Physical unit: See PU.
Programmatic access
Programmatic access is a design
feature of some systems which
allows you to use the system's
features from programs you
write. SNA NRJE has both
command access and
programmatic access.
PU: A component of an SNA
node. A PU controls the physical
resources of a node and reports
errors and physical failures to the
SSCP. One PU resides in each
node. A PU is the access method
in a host node, the NCP in the
communications controller node,
and the hardware and software in
peripheral nodes.
R
Remote: A workstation that is
not local to the host system, and
is configured under the host job
entry subsystem. A remote can be
connected to its host by
communications facilities or by
direct attachment.
RH: Request or response header.
These are attached to SNA RUs
to control data flow and support
other network services.
RU: Request or response unit.
S
SDLC: Synchronous Data Link
Control. SDLC is the data link
level communications protocol
used in SNA.
SIGNAL: An SNA request
primarily used to interrupt an
LU, to send higher priority data
to that LU.
SNA: Systems Network
Architecture, a comprehensive
specification for distributed data
processing developed by IBM.
SNA defines a layeredprotocol for
communicating and controlling a
communications network within
the IBM environment.
SNA NRJE: HP’s Systems
Network Architecture Network
Remote Job Entry. This HP
product emulates the RJE
product on an IBM 8100
minicomputer running the DPPX
(Distributed Processing
Programming Executive)
Operating System. This
emulation enables users on the
HP 3000 to submit batch jobs,
through an SNA network, to an
IBM host or compatible
mainframe for processing. The
host can then send the output
back to the HP 3000 for printing
or storing on disk.