Instruction manual

DEFINITY® Business Communications System and GuestWorks® Issue 6
Overview
555-231-208
Issue 1
April 2000
Glossary and Abbreviations
GL-22
MF
Multifrequency
MFB
Multifunction board
MFC
Multifrequency code
minor alarm
An indication of a failure that could affect customer service. Minor alarms are automatically
displayed on LEDs on the attendant console and maintenance or alarming circuit pack, sent to the
alarm log, and reported to a remote maintenance facility, if applicable.
MIS
Management information system
modular processor data module (MPDM)
A processor data module (PDM) that can be configured to provide several kinds of interfaces
(RS-232C, RS-449, and V.35) to customer-provided data terminal equipment (DTE). See also
processor data module (PDM)
.
modular trunk data module (MTDM)
A trunk data module that can be configured to provide several kinds of interfaces (RS-232, RS-449,
and V.35) to customer-provided data terminal equipment.
MOS
Message-oriented signaling
MPDM
Modular processor data module
MS
Message server
MSA
Message servicing adjunct
MSG
Message service
MT
Management terminal
MTDM
Modular trunk data module
MTP
Maintenance tape processor
MTT
Multitasking terminal
multiappearance telephone
A telephone equipped with several call-appearance buttons for the same extension, allowing the
user to handle more than one call on that same extension at the same time.
Multicarrier cabinet
A structure that holds one to five carriers. See also single-carrier cabinet
.