Information Highway; Powerplane - Polycom DOC2238A Hardware Installation Manual

Chapter 4 - Hardware Description

Information Highway

Powerplane

4-12
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.
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.