Instruction manual

DEFINITY® Business Communications System and GuestWorks® Issue 6
Overview
555-231-208
Issue 1
April 2000
Glossary and Abbreviations
GL-21
LWC
Leave Word Calling
M
MADU
Modular asynchronous data unit
main distribution frame (MDF)
A device that mounts to the wall inside the system equipment room. The MDF provides a
connection point from outside telephone lines to the PBX switch and to the inside telephone
stations.
maintenance
Activities involved in keeping a telecommunications system in proper working condition: the
detection and isolation of software and hardware faults, and automatic and manual recovery from
these faults.
management terminal
The terminal that is used by the system administrator to administer the switch. The terminal may
also be used to access the BCMS feature.
major alarm
An indication of a failure that has caused critical degradation of service and requires immediate
attention. Major alarms are automatically displayed on LEDs on the attendant console and
maintenance or alarming circuit pack, logged to the alarm log, and reported to a remote
maintenance facility, if applicable.
Manual-In work mode
One of four work modes: the mode in which an agent is ready to process another call manually.
See
Auto-In Work mode
for a contrast.
MAPD
Multiapplication platform for DEFINITY
MCC
Multicarrier cabinet
MCT
Malicious Call Trace
MCU
Multipoint conferencing unit
MDF
Main distribution frame
MDM
Modular data module
MDR
Message detail record
MET
Multibutton electronic telephone