Polycom DOC2238A 사용자 설명서
Chapter 4 - Hardware Description
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Audio+ Module Architecture
Audio+ represents a new family of audio cards. Audio+ has the same general
card architecture as other modules. This has an impact on the number of ports
supported by each card.
card architecture as other modules. This has an impact on the number of ports
supported by each card.
Figure 4-22: Audio+ Module
Audio+ Port Capacities
The system’s working mode affects its system capacity: Medium Band
(without Siren14) and Wide Band (with Siren14). The Medium and Wide
Band settings are defined in the system.cfg file.
(without Siren14) and Wide Band (with Siren14). The Medium and Wide
Band settings are defined in the system.cfg file.
For Medium Band, the flag is set to
AUDIO_PLUS_FREQUENCYBAND_MODE=MB.
AUDIO_PLUS_FREQUENCYBAND_MODE=MB.
For Wide Band, the flag is set to
AUDIO_PLUS_FREQUENCYBAND_MODE=WB.
AUDIO_PLUS_FREQUENCYBAND_MODE=WB.
Memory
Message
module
TDM Interface
Audio
Audio
Module
Module
Data
Module
Module
Audio
Codec
DSP
x 7
QIFI
FPGA
Audio
Controller
Unit
DSP
Memory
PCI
BUS
32 Mbit/s
Links
32 Mbit/s
Link
Link
PCI
BUS
BUS
Front
Panel
LEDs
Card
Manager
Memory
LAN
I/F
PMC
I/F
HDLC
I/F