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

Glossary 137
Glossary
DTC/X.25 Network Access The
software that resides on the
Datacommunications and
Terminal Controller (DTC). 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 configured
through use of NMMGR
software), and DTC/X.25 Network
Access (configured on the
OpenView Windows Workstation
through use of the OpenView
DTC Manager software for
PC-based management, and
through NMMGR for host-based
management).
DTC/X.25 Network Access
card The hardware card and
channel adapter that provides
X.25 Network Access. It resides in
the Datacommunications and
Terminal Controller (DTC).
DTC/X.25 iX Network Link
Software and hardware that
provides MPE/iX access to private
and public X.25 networks. The
X.25 iX System Access software
resides on an HP 3000 host and is
configured through use of
NMMGR. The DTC/X.25 Network
Access software resides on the
Datacommunications and
Terminal Controller and is
configured at the OpenView
Windows Workstation for
PC-based management and
through NMMGR for host-based
management.
DTE Data Terminal Equipment.
Equipment that converts user
information into
data-transmission signals or
reconverts received data signals
into user information. Data
terminal equipment operates in
conjunction with data
circuit-terminating equipment.
DTS Distributed Terminal
Subsystem. This consists of all of
the Datacommunications and
Terminal Controllers (DTCs) on a
LAN, their LANIC cards
(attached to the host), the LAN
cable, and the host and DTC
software that controls all related
DTS hardware.
duplex A transmission method
that allows two-way
communication. If both ends of
the transmission link can
transmit simultaneously, it is
called full duplex. If only one end
can transmit at a time, it is
half-duplex transmission.
E
EEPROM Electrically Erasable
Programmable Read-Only
Memory. EEPROM
reprogramming is used to replace
a current DTC’s ROM code that
resides on the LAN board. The
process is also referred to as
Flash EEPROM reprogramming.
entry priority In a
point-to-point network, it is a
ranking that identifies the most