Troubleshooting Terminal, Printer and Serial Device Connections - Edition 4 (32022-90030)

Glossary 157
Glossary
Network Access software to
provide MPE/iX 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 and the DTC/X.25
Network Access (residing on the
Datacommunications and
Terminal Controller and
configured at the OpenView
Windows Workstation). Together,
these two components provide a
network connection on HP 3000
systems to private and public
X.25 packet-switched networks
(PSNs).
X.29 The protocol that 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 The 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 terminal equipment
operation and interfaces.