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All the keys from IC1 to IC6 light red and the following information
appears on the screen.
Press and hold the PTT key on the microphone and speak into the
microphone.
The following information appears on the screen.
Release the PTT key to receive.
After finishing your conversation, press the ALL key to return to the
home screen.
Press any key from IC1 to IC6 on the front panel.
The selected key lights red and a short tone sounds from the
corresponding intercom speaker. Also the following information
appears on the screen.
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