AGA - AlphaCom General Purpose Audio Board
From Zenitel Wiki
Features
- 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
Description
This board is a general purpose audio interface for program feeding or speech communication between modules. When used as audio program feed board there is room for max. two boards placed in positions 21 and 20.
When used for communication between modules each board provides 8 speech channels in a communication ring in a multi-module AlphaCom system. There can be 1 to 3 AGA-board for this purpose in one module, placed in positions 24, 23 and 22.
Easily accessible potentiometers at the front enable sensivity control of the audio channels.
Multi Program Distribution
Each board provides 16 audio inputs for program distribution when used in AlphaCom E20 or E27. There can be 1 or 2 boards in a module placed in positions 20 and 21.
AGA boards can be placed in board position 1- 6 in an E7 exchange, but the number of channels is reduced to 6 on one board: ch. 4, 6, 8, 10, 12 and 14. The program sources are connected to the ‘c’ and ‘d’ terminals on the back plane.
An AGA connection kit 100 9930 300 need to be purchased to connect the audio sources. The kit contains a filter board, a connection board and an interface cable.