AGA - AlphaCom General Purpose Audio Board
From Zenitel Wiki
The AGA board is a general purpose audio interface which can be used for multiple purposes, like Audio Program feed, communication between AlphaCom modules or communication towards 3rd party systems like RingMaster or M100.
Contents
Highlights
- Circuitry for feeding 16 audio program channels into and/or out of the AlphaCom exchange under software control
- Provides 6 channels for two-way speech communication between nodes in an AlphaNet system
- Can be used for special features such as duplex conferencing and volume control for group calls
- 600 ohms 0dB galvanic isolated input/output via transformer
- Termination on board with jumpers
- Board can add internal and external audio sources to an audio input/output
- Provides 8 channels for two-way speech communication between modules in a multimodule system
- Individually adjustable sensitivity (gain) for all channels
- Coded connector to ensure correct positioning in the module
- Hot-plug in/plug out
Usage
Audio Program
The AGA Board can be used to expand the number of Audio Program inputs.
AlphaCom XE7: The number of Audio Programs can be extended by adding AGA boards. Each added AGA board provides 6 Audio inputs for program distribution. The AGA boards can be placed in any board position. For details, see Expanding the number of Program Inputs in AlphaCom XE7
AlphaCom XE20/26: The number of Audio Programs can be extended to 70 by adding AGA boards. Each added AGA board provides 16 audio inputs for program distribution. The AGA board(s) must be inserted in position 18-21. For details, see Expanding the number of Program Inputs in AlphaCom XE20/26
RingMaster Audio Interface
When integrating AlphaCom XE server with RingMaster CB901 the AGA must be used as an Audio Interface.
See article: M100 and AlphaCom interfacing
M100 Audio Interface
When integrating AlphaCom XE server with Philips M100 the AGA must be used as an Audio Interface.
See article: CB901 and AlphaCom E interfacing
MultiModule
AlphaCom XE20/26: Each AGA board provides 8 audio channels in a communication ring. There can be 1-3 boards in each module placed in positions 22, 23 and 24.
AlphaCom XE7: Each board provides 6 audio channels in a communication ring, as line 1 and line 8 are not used. Board positions 4, 5 and 6 can be used for MultiModule.
The AGA boards must be located in the same positions in the Master and Slave modules.
The Installation set for Multi Module (1009930303) has to be purchased.
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Today MultiModule is normally connected over IP network. Using analog AGA boards are still supported, but not recommended. |
AlphaNet
Note! For AlphaCom E and XE servers the AGA is not needed for AlphaNet. AlphaNet audio is achieved through VoIP.
Each board provides 6 audio channels between the exchanges. There can be any number of AGA boards in each exchange placed in any position. Pos 20-23 are recommended in AlphaCom 138 to avoid modifications of the backplane. Use the same filter board with cable and connection board as ASLT. Audio output is on ab-wires, audio input on cd-wires.
Station
Information missing
Duplex Conference
The Duplex Conference requires proper installation of an AGA board.
At least one AGA board is needed, and some AGA resources must be programmed to Open Duplex Conf Mixer in Exchange & System -> Board. (Each “port” defined in AlphaPro makes two mixer circuits, each 1/16th of AGA). In case of MultiModule, the AGA board must be located in the Master module.