Polycom DOC2237A Hardware Installation Manual page 64

Chapter 3 - System Architecture
3-2
The MGC Unit is made up of:
• Main Control Module, located at the top left of the unit when viewed
from the front
• 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
NET I/O
MUSIC I/O
Main Control
Module
Power Supply
Module
Figure 3-2: MGC-100 Components
Backplane
H.323 I/O
ATM I/O
ISDN Network I/F
Audio
Video
Data
H.323 Network I/F
ATM Network I/F
MUX
Front