Polycom DOC2230A manual MGC Unit Components, Description

Chapter 2 - Hardware Description

MGC Unit Components

The following table describes the MGC components. A more detailed description is found in the MGC-50/MGC-100 Hardware & Installation Manual.

Table 2-1: MGC Component Description

MGC	Description
Component
Control Module	The Main Control Module performs the conference setup
	and termination and resource allocation in both the
	MGC-100 and the MGC-50.
Backplane	The backplane is an electronic circuit board into which
	The Network Interface Module, the Main Control Module,
	Functional Modules, and I/O cards are plugged so the
	various modules can communicate with each other. The
	Backplane is based on the “universal slot” concept, where
	any card can be inserted in any slot.
Power Plane	The Power Plane is a conducting layer providing power to
	the components. It is part of the Backplane and is
	designed to accommodate hot swapping of power
	supplies.
Power Supply	The Power Supply Module is located underneath the Main
Modules	Control Module and the Functional Modules and is
	connected to the backplane. It provides power to the
	Backplane by means of a power bus. Both MGC units
	(MGC-100 and MGC-50) operate at 100-240 volts AC 50/
	60 Hz.
Fans	Three (MGC-100) or two (MGC-50) fans are mounted at
	the bottom of the rear panel.
Alarms Port	In the MGC-100 an Alarms port is located on the Main
	Control Module. The dry contacts on the rear panel of the
	MGC-100 are for connecting to the customer’s alarm
	system.

2-8