Nortel Networks BCM200/400 Telephone User Manual


 
54 Chapter 1 Introduction to the Business Communications Manager Platform Hardware
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Base Function Tray Component Hardware
The base function tray hardware controls all data and telephony tasks, such as call processing,
voice messaging, and data routing. The base function tray contains the following hardware
components:
1 x Base function tray chassis
System status display (LEDs)
1 x Media services card
1 x Main card
1 x Wide area network (WAN) card (available only as a field upgrade)
Processor expansion cards (PEC III) - (1 for BCM200 or 2 for BCM400)
1 x V.90 modem (North America only)
Base function tray chassis
The base function tray installs in the platform base chassis and houses the main card with the
system interfaces.
Figure 15 illustrates the base function tray chassis layout (BCM200 configuration shown).
Figure 15 Base function tray hardware and chassis
Base
function tray
chassis
Base
function tray
latch
Base function
tray chassis
extension
MSC
System status
display LEDs
DS30
Connectors
MSC chassis
mounting screws
PEC III
slots