Polycom DOC2238A 사용자 설명서
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.
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 4-24 shows the Data Module’s architecture.
Figure 4-24: Data Module
TDM Interface
Data
Data Hardware
Card
Manager
Watch
Dog
Memory
HDLC Interface
Front
Panel
LEDs
LEDs
FPGA
Data
Processor
DPR
x 4
FLASH
SRAM
PAL