Polycom DOC2238A manual Information Highway, Powerplane

Chapter 4 - Hardware Description

Information Highway

The Information Highway is a high capacity TDM-type bus. It is used by both the MGC+100 and the MGC+50. The Information Highway transfers information from the Network Interface Modules to the MUX+ Modules and from the MUX+ Modules to the Audio+, Video+ and Data Modules except during IP calls. In IP calls (H.323 and SIP) the information is transferred directly to the IP+ network module and from there to the Audio+, Video+ and Data modules.

Powerplane

The MGC+100, as opposed to the MGC+50, uses a Powerplane. Up to three Power Supply Modules can be plugged into the Powerplane. The Powerplane and Power Supply Modules are designed to accommodate hot swapping of power supplies.

In the MGC+50, there is one power supply, which is connected to the backplane and fans via wire leads.

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