Avtec USB NENA - Appendix C: Understanding the Hardware Connections

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Aux Inputs - The hookswitch cable for the Avtec handset cradle feature is wired to the terminal block connector
so that when the terminal block connector (green) is inserted, the cable's black wire connects to the input #3
pin and the cable's white wire connects to the input #4 (earth ground) pin
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Audio Out - Disabled
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USB - Connects the jack box to a USB port on a Scout console computer
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NENA - Connects the jack box to a NENA-compliant phone
Appendix C:Understanding the Hardware Connections
NENA compliant phones feature multiple connections to the USB NENAJack Box. The following block diagram details
the functional wiring.
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Avtec USB NENA Jack Box Configuration Guide | October 2021 | Revision 9