Polycom DOC2238A Hardware Installation Manual page 74

Chapter 3 - System Architecture
3-2
The MGC+ Unit is made up of:
• Main Control Module, located in Slot A
• Functional Modules, located to the right of the Main Control Module
when the unit is viewed from the front
• Power Supply Module, located underneath the Main Control Module and
Functional Modules
• Input/Output cards, located behind the backplane opposite the Functional
Modules
The various modules communicate with each other via the Backplane. The
Control Bus and Information Highway are implemented on the Backplane.
Figure 3-2 describes the functional block diagram of the MGC+100
components.
Rear
MUSIC I/O
CU I/O
Power Supply
Figure 3-2: MGC+100 Components
H.323 I/O
NET I/O
Data
Control
Module
Module
Backplane
H.323 Network I/F
ISDN Network I/F
+
MUX
+
Audio
+
Video
Front