MGC Hardware and Installation Manual

Audio+ Module Architecture

Audio+ represents a new family of audio cards. Audio+ has the same general card architecture as the audio card, but with a different number of processors. This has an impact on the number of ports supported by each card.

Audio

TDM Interface

Audio

 

 

 

 

Module

 

 

 

32 Mbit/s

 

 

 

 

 

 

 

QIFI

Link

Message

 

32 Mbit/s

FPGA

 

module

 

 

 

 

Links

 

 

 

 

 

 

 

 

Audio

 

Audio

 

 

Codec

 

 

 

 

Controller

 

 

DSP

 

 

 

 

Unit

 

 

 

 

 

 

x 7

 

DSP

 

 

 

PCI

 

 

 

Memory

BUS

Memory

 

 

 

Front

Card

 

LAN

PMC

Panel

Memory

Manager

LEDs

 

I/F

I/F

 

 

Data

 

 

 

PCI

Module

 

 

 

BUS

 

 

HDLC

 

 

 

 

I/F

 

 

Figure 4-30: 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.

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Polycom DOC2237A manual Audio+ Module Architecture, Audio + Port Capacities