Nortel BCM200 Installation And Maintenance Manual page 41

Table 6 Base function tray internal component descriptions
Component
System Status LEDs
DS256 interface
PEC III slots
Media services card (MSC)
MSC mounting screws
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.
components. Table 7
Figure 10 BCM200 MSC components
DS256 interface (connect
to MBM backplane DS30
connectors)
Bracket press plate
Description
The system status display LEDs indicate the current status of the hardware
components (see "Base function tray system status display LEDs" on page
The DS256 interface connects to MBM backplane DS30 connectors.
The PEC III slots provide connections for installing PECs.
The MSC performs call processing and media processing of the voice channels for
the BCM system. See
These screws are used to mount the MSC in the main unit.
describes the MSC faceplate optional connectors.
PEC III (2 slots)
Auxiliary ringer
Page relay
Page output
Music-on-hold input
Chapter 2 Introducing the BCM hardware
"Media services card (MSC)" on page
Figure 11 shows the BCM400 MSC
Lanclet tab
BCM200/400 4.0 Installation and Maintenance Guide
77).
41.
Mounting
screw
holes
PCI connector
41