Instruction manual

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12. ICS Volume Control and Activation Switch
Pull to activate the ICS system.
This disables the microphone from the transmitters. The system now operates in
full duplex mode via the headset.
Push the VOL control "in" to disable the ICS system and return to normal radio
operation.
While the ICS system is activated, the radio activity LED's continue to operate.
Radio audio is mixed with the ICS audio. Transmitting, however, is not possible.
Rotate the VOL control to adjust ICS audio to the headset.
While in ICS mode, the LED above the knob is illuminated.
13. ICS Alert LED blinks to indicate you are being called by another operating
position. A pulsating tone is sent to the headset. Activating the ICS causes the LED to
be steady on and mutes the tone. Deactivating the ICS system turns the LED off.
14. Public Address System Switch
Pull to route mic audio to the PA system.
Push to disconnect.
While in PA mode, the radio activity LED's continue to operate. Radio
audio is available in the headphones. Transmitting, however, is not
possible.
15. PA On Indicator The LED above the push button switch indicates the system is in
the PA mode.
16. Call Buttons Press the appropriate button(s) to call another operating position.
These are momentary contact pushbutton switches that latch a blinking alert LED at the
called position's panel.
17. Digital Clock The dual digital clock displays both local and UTC time
simultaneously.