NEC NDA-24233 manual Headset, MIC Connection 1

VisuaLink 128/384 Engineering Guide Appendix A

Appendix A: Pin-out Specification

Pin-out specifications for all the VL 128/384 connectors.

SERIAL 1 PORT

NO	Symbol	Direction	Function
1	RS	OUT	Request to Send
2	CS	IN	Clear to Send
3	SD	OUT	Send Data
4	GND	-	Ground
5	RD	IN	Receive Data
6	-	-
7	ER	OUT	Data Terminal Ready	8 PIN MIN DIN FEMALE
8	DR	IN	Data set Ready

Note: The signal direction shown is seen from the VisuaLink 128 (DTE).

SERIAL 2 PORT

NO	Symbol	Direction	Function
1	RS	OUT	Request to Send
2	CS	IN	Clear to Send
3	SD	OUT	Send Data
4	GND	-	Ground
5	RD	IN	Receive Data
6	+5V	OUT
7	ER	OUT	Data Terminal Ready	8 PIN MIN DIN FEMALE
8	DR	IN	Data set Ready

Note: The signal direction shown is seen from the VisuaLink 128 (DTE).

		Headset				RING
							TIP
Name		Function
TIP		Input from microphone
RING		Output to ear piece
SLEEVE		Ground					SLEEVE
				HEADSET JACK
	MIC Connection (1 - 3)				RING
							TIP
Name		Function	Polarity
TIP	Input from microphone		+
RING	Output to ear piece		-
SLEEVE	Ground

SLEEVE

MIC JACK

NDA-24233 Issue 2 Page A-1