Polycom DOC2238A - Manual (Page 118)

Chapter 4 - Hardware Description
4-38
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.
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.
For Medium Band, the flag is set to
AUDIO_PLUS_FREQUENCYBAND_MODE=MB.
For Wide Band, the flag is set to
AUDIO_PLUS_FREQUENCYBAND_MODE=WB.
Memory
Message
module
TDM Interface Audio
Audio
Module
Data
Module
Audio
Codec
DSP
x 7
QIFI
FPGA
Audio
Controller
Unit
DSP
Memory
PCI
BUS
32 Mbit/s
Links
32 Mbit/s
Link
PCI
BUS
Front
Panel
LEDs
Card
Manager
Memory LAN
I/F
PMC
I/F
HDLC
I/F