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Chapter 4 - Hardware Description

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Data Module

The Data Module performs conference data and control routing for up to 12

participants. The system allows for 12 conferences of one participant each, or

one conference of 12 participants or any combination in between. In T.120

conferences, the data module does the Transcoding. The module supports

various ITU-T T.120 standards for data transfer and application sharing in a

multipoint conference.

The Data Module supports the following standards:

• ITU-T T.122/T.125—MCS (Multipoint Communications Service)

• ITU-T T.123—Transport Protocol Stacks

• ITU-T T.124—GCC (Generic Conference Control)

Data Module Architecture

Figure 4-28 shows the Data Module’s architecture.

Figure 4-33: Data Module

TDM Interface

Data

Data Hardware

Card

Manager

Watch

Dog

Memory

HDLC Interface

Front

Panel

LEDs

FPGA

Data

Processor

DPR

FLASH

SRAM

PAL

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