Polycom DOC2238A - Manual (Page 90)

Chapter 4 - Hardware Description
4-10
Backplane
The Backplane is based on the “universal slot” concept, where any functional
card can be inserted in any functional slot. Therefore, different configurations
are formed based on the users’ port capacity and functionality requirements.
The Backplane supports hot swapping of Function Modules and all I/O cards.
In the MGC+100, the front of the Backplane contains 16 slots for Functional
Modules and an additional slot (Slot 1) for the Main Control Module. The
back of the Backplane contains 16 slots for I/O cards (15 slots for I/O and 1
slot for the Main Control Module). The Network Interface Modules
connected via the Backplane to I/O cards, which connects the system to the
network. The Power Supply Module provides power to the Backplane via a
power bus.
Figure 4-7: MGC+100 Backplane
CU I/O
ISDN Network I/F
H.323 Network I/F
MUX
Audio
Video
Data
H.323 I/O
NET I/O
MUSIC I/O
Rear
Backplane
Front
Power Supply
Module
Control
Module
+
+
+