Configuring and Managing Host-Based X.25 Links - Edition 5 (36939-90054)

Glossary 217
Glossary
X.25 Defines the interface
between a DTE and a DCE for
packetmode operation on a public
data network (PDN).
X.25 address The X.25 address
provided by the network
administration if you are
connected to a public data
network (PDN).
X.25 address key An X.25
address key is a label that maps a
node's IP address to its X.25
address and its associated X.25
parameters. You have a combined
maximum of 1024 X.25 address
keys in the SVC and PVC path
tables.
X.25 LUG address X.25 address
of a node belonging to a local user
group (LUG).
X.25 iX System Access The
software that works in
conjunction with the DTC/X.25
Network Access software to
provide access to X.25. The
software resides on an HP 3000
host and is configured through
use of NMMGR. To configure
access to an X.25 network, you
must configure two software
components: the X.25 iX System
Access (residing on the HP 3000
host), and the DTC/X.25 Network
Access. DTC/X.25Network Access
is configured through use of the
OpenView DTC Manager
software for systems using
PC-based network management
or through NMMGR for systems
using host-based network
management.
X.29 Defines the interface for
data exchange between a
packet-mode DTE and a remote
Packet Assembly/Disassembly
(PAD) facility over a packet
switching network.
XON/XOFF protocol Flow
control used by MPE/iX systems
to protect against data overruns.
XON/XOFF protocol is controlled
by the data recipient who sends
an XOFF character (ASCII DC3)
to the sender if it is unable to
continue to receive data. The
sender suspends transmission
until it receives an XON
character (ASCII DC1).
X.Series (X.##) CCITT
recommendations A set of
recommendations for data
communication networks
governing their services,
facilities, and the operation of
terminal equipment and
interfaces.