Polycom MX392 manual Switch Behavior

Switch Behavior	User Action Required / LED	DIP Switch Settings
	Behavior
Push to Mute, Release to Talk (As	Press and hold switch to temporarily	S1	= OFF
Shipped)	mute microphone; release switch to	S2	= OFF
	unmute.	S3	= OFF
	LED on when microphone is active.	S4	= OFF
Push to Talk, Release to Mute	Press and hold switch to activate	S1	= OFF
	microphone; release switch to mute.	S2	= ON
		S3	= OFF
	LED on when microphone is active.	S4	= ON
Toggle: Push On/Push Off	Press switch to toggle microphone on	S1	= ON
	and off.	S2	= ON for muted initial state
		S2	= OFF for active initial state
	LED on when microphone is active.	S3	= OFF
		S4	= OFF
Microphone Always Active	LED always off.	S1	= OFF
(switch available for logic		S2	= OFF
functions only)	If LED IN is shorted to LOGIC	S3	= ON
	GROUND terminal, LED always on.	S4	= OFF
Automatic Mixer Mode (MX392	If S1 = OFF, SWITCH OUT will be	S1	= ON or OFF
Models only)	momentarily logic low when switch is	S2	= OFF
	pressed.	S3	= ON
	If S1 = ON, SWITCH OUT will be	S4	= OFF
	latching low when switch is pressed.
	Connect SWITCH OUT signal to Logic
	Input port (Pins 1-24).
	Connect LED IN to Logic Output port
	to have EF Device control the action
	of the LED.

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