Nortel Networks BCM200/400 - Manual (Page 43)

Chapter 2 Introducing the BCM hardware 43
BCM200/400 4.0 Installation and Maintenance Guide
Media services card (MSC)
The media services card (MSC) is a peripheral component interface (PCI) card that performs call
processing and media processing of the voice channels for the BCM system, including VoIP
trunks. The MSC also offers connections for auxiliary features, including external
customer-supplied hardware for paging and music-on-hold.
Figure 10 shows the BCM200 MSC components. Figure 11 shows the BCM400 MSC
components. Table 7 describes the MSC faceplate optional connectors.
Figure 10 BCM200 MSC components
Table 6 Base function tray internal component descriptions
Component Description
System Status LEDs The system status display LEDs indicate the current status of the hardware
components (see
“Base function tray system status display LEDs” on page 79 ).
DS256 interface The DS256 interface connects to MBM backplane DS30 connectors.
PEC III slots The PEC III slots provide connections for installing PECs.
Media services card (MSC) The MSC performs call processing and media processing of the voice channels for
the BCM system. See
“Media services card (MSC)” on page 43 .
MSC mounting screws These screws are used to mount the MSC in the main unit.
PEC III (2 slots)
Bracket press plate
PCI connector
Auxiliary ringer
Page relay
Page output
Music-on-hold input
Mounting
screw
holes
DS256 interface (connect
to MBM backplane DS30
connectors)
Lanclet tab