AT&T OneVision DEFINITY G3 Guide, Installation And Connection Manual

Page: 276 / 287

Issue 2 April 1996 GL-5
Glossary
MDF Main distribution frame. A wiring arrangement that connects the outside
telephone lines to the internal lines. A main distribution frame can also
carry protective devices and function as a central testing point.memory
A device into which information can be copied and held and from which
information can be obtained at a later time.
MIB Management information base. A database of network management
information. In this book, MIB refers to the total MIB that consists of two
groups from MIB-II (an industry standard MIB) and all of the G3-MIB
developed specifically for DEFINITY G3 SNMP.
message line A line on G3-MA screens that displays informational messages. The line
is located near the bottom of the screen, directly above the command
line.
modem A device that converts digital data signals to analog signals for
transmission over telephone circuits. The analog signals are converted
back to the original digital signals by another modem at the other end of
the circuit.
N
network
management
system See NMS.
nondestruc-
tive
installation An installation where the operating system is replaced but user files
remain untouched.
NMS Network management system. A comprehensive system of hardware and
software used to monitor, control, and manage a communications
network. An NMS usually consists of testing devices, CRT displays and
printers, patch panels and circuitry for the diagnosis and reconfiguration
of channels.