DEFINITY Enterprise Communications Server Release 8.2
Upgrades and Additions for R8r
555-233-115 Issue 1
April 2000
Glossary and Abbreviations

GL-33

MMCS
Multimedia Call Server
MMCH
Multimedia call handling
MMI
Multimedia interface
MMS
Material Management Services
MO
Maintenance objec t
modem
A device that converts digital data signals to analog sig nals for transmission over telephone
circuits. The analog signals are converted back to the original digital d ata signals by another
modem at the other end of the circuit.
modem pooling
A capability that provides shared conversion resources (modems and data mod ules) for
cost-effective access to analog facilities by data terminals. When needed, modem pooling inserts
a conversion resource into the path of a data call. Modem pooling serves both outgoing and
incoming calls.
modular processor data module (MPDM)
A processor data module (PDM) that can be configured to provide several kinds of interfac es
(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.
modulator-demodulator
See modem.
monitored call
See active-notific ation call.
MOS
Message-oriented sig naling
MPDM
Modular processor data module
MSMessage server
ms Millisecond
MS/T
Main satellite/tributary
MSA
Message servicing a d junct