The Central Unit contains an AUX-port with two opto-coupler isolated I/O:s, one input and one output function. The primary use of this port is to control an external telephone hybrids hook-on and off state and detect the hybrid hook state.
The input can also be used to externally control part of the Central Units audio settings, by toggling this pin the Central Unit will switch between two programmed audio settings, see the Central Unit manual for more information.
The pin-out of the AUX-port can be found in the Central Unit manual:
http://close-talk.com/download_manuals.htm
NOTE!
The manual contains an error for the AUX port, it shows the pin "Input cathode" as pin 6. This is wrong, the correct pin number is 8.
What is the Central Unit AUX-port used for?
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Closetalk Support
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What is the Central Unit AUX-port used for?
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Close Talk Support
http://www.closetalk.se http://www.close-talk.com
All posts are believed to be fully accurate for a normal system, instructions and procedures should be followed in detail. If in doubt, please ask for clarifications. Close Talk Conference System makes no guarantees that information posted here will not cause other direct or indirect problems due to unforeseen circumstances and will not accept liability for events including but not limited to data losses, system downtime, missed deadlines, etc. It is assumed that the customer has and is taking professional precautionary actions suitable for their own system and user environment to prevent such losses.
Close Talk Support
http://www.closetalk.se http://www.close-talk.com
All posts are believed to be fully accurate for a normal system, instructions and procedures should be followed in detail. If in doubt, please ask for clarifications. Close Talk Conference System makes no guarantees that information posted here will not cause other direct or indirect problems due to unforeseen circumstances and will not accept liability for events including but not limited to data losses, system downtime, missed deadlines, etc. It is assumed that the customer has and is taking professional precautionary actions suitable for their own system and user environment to prevent such losses.