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MGC Hardware and Installation Manual
4-19
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.