Configuring Systems for Terminals, Printers, and Other Serial Devices (32022-90051)
Glossary 263
Glossary
by the DTC Manager, including
monitoring and diagnostic
functions.
OpenView Windows he set of
three programs: OV Admin, OV
Draw and OV Run, running on
the OpenView workstation under
MS Windows, that acts as the
platform for all OpenView
applications, such as DTC
Manager.
OpenView Windows
Workstation The personal
computer that provides software
downloads to enable operation of
the Datacommunications and
Terminal Controller (DTC). The
configuration software that runs
on this workstation is called the
OpenView DTC Manager
software.
OSI model Open Systems
Interconnectionmodel.A model of
network architecture devised by
the International Standards
Organization (ISO). The OSI
model defines seven layers of a
network architecture with each
layer performing specified
functions.
P
packet A block of data whose
maximum length is fixed. The
unit of information exchanged by
X.25 at Level 3. The types of
packets are DATA packets and
various control packets. A packet
type is identified by the encoding
of its header.
Packet Exchange Protocol
PXP. A transport layer protocol
used in NS 3000/iX links to
initially establish communication
between nodes when NetIPC
socket registry is used.
packet-switched network
name The name of a data
communication network adhering
to the CCITT X.25
recommendation. This can be a
PDN or a private network such as
the HP PPN.
PAD (Packet
Assembler/Disassembler A
device that converts
asynchronous character streams
into packets that can be
transmitted over a packet
switching network (PSN).
PAD name A name of up to eight
characters that is associated with
a configured PAD device. The
PAD name is known to both the
DTC (defined by the DTC
Manager) and the MPE/iX
systems (defined by NMMGR)
that the device can access.
PAD profile A terminal or
printer profile that specifies the
configuration characteristics for
PAD-connected devices.
PAD support A software module
which can be downloaded to an
X.25 board in a DTC. The
software is used to manage
connections with remote PAD
devices.