3Com S26x, S27x, S24x installation manual 35/V.36 Motherboard, Function Pin, Position Signal Name

The following table shows V.35/V.36 signals with V.35/V.36 DIMs on the motherboard.

V.35/V.36 (Motherboard)

Pin	DCE		Function/	Pin		DTE	Function/
	Position		Signal Name			Position	Signal Name
1	---------------		SHIELD/FRAME	1	---------------		SHIELD/FRAME
			GROUND				GROUND
2	<--------------		TRANSMITTED	2	--------------	>	TRANSMITTED
			DATA A				DATA A
3	--------------	>	RECEIVED	3	<--------------		RECEIVED
			DATA A				DATA A
4	<--------------		REQUEST TO	4	--------------	>	REQUEST TO
			SEND				SEND
5	--------------	>	CLEAR TO	5	<--------------		CLEAR TO
			SEND				SEND
6	--------------	>	DATA SET	6	<--------------		DATA SET
			READY				READY
7	--------------		SIGNAL	7	---------------		SIGNAL
			GROUND				GROUND
8	--------------	>	DATA CARRIER	8	<--------------		DATA CARRIER
			DETECT				DETECT
14	<--------------		TRANSMIT	14	--------------	>	TRANSMIT
			DATA B				DATA B
15	--------------	>	TRANSMIT	15	<--------------		TRANSMIT
			CLOCK A				CLOCK A
16	--------------	>	RECEIVED	16	<--------------		RECEIVED
			DATA B				DATA B
17	--------------	>	RECEIVE	17	<--------------		RECEIVE
			CLOCK A				CLOCK A
18	--------------	>	RECEIVE	18	<--------------		RECEIVE
			CLOCK B				CLOCK B
20	<--------------		DATA	20	--------------	>	DATA
			TERMINAL				TERMINAL
			READY				READY
21	--------------	>	TRANSMIT	21	<--------------		TRANSMIT
			CLOCK B				CLOCK B
22	<--------------		EXTERNAL	22	-------------	>	EXTERNAL
			TRANSMIT				TRANSMIT
			CLOCK B				CLOCK B
24	<--------------		EXTERNAL	24	--------------	>	EXTERNAL
			TRANSMIT				TRANSMIT
			CLOCK A				CLOCK A

A-2 Cables