3Com S24x 35/V.36 SDB, Function/Signal, Receive Receive Clock Clock B Data Data Terminal Ready

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

V.35/V.36 (SDB)

Pin	DCE		Function/	Pin		DTE	Function/Signal
	Position		Signal Name			Position	Name
1	---------------		SHIELD/FRAME	1	---------------		SHIELD/FRAME
			GROUND				GROUND
2	<--------------		TRANSMITTED	2	--------------	>	TRANSMITTED
			DATA A				DATA A
3	--------------	>	RECEIVED	3	<--------------		RECEIVED DATA
			DATA A				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
13			TRANSMIT	13	--------------	>	TRANSMIT
			CLOCK (B)				CLOCK (B)
14	<--------------		TRANSMIT	14	--------------	>	TRANSMIT DATA
			DATA B				B
15	--------------	>	TRANSMIT	15	<--------------		TRANSMIT
			CLOCK A				CLOCK A
16	--------------	>	RECEIVED	16	<--------------		RECEIVED DATA
			DATA B				B
17	--------------	>	RECEIVE	17	<--------------		RECEIVE CLOCK
			CLOCK A				A
18	--------------		N/A	18	<--------------		LOOP 3 (V.36 only)
19	<--------------		RECEIVE	19	--------------	>	RECEIVE CLOCK
			CLOCK B				B
20	<--------------		DATA	20	--------------	>	DATA TERMINAL
			TERMINAL				READY
			READY
21	--------------		N/A	21	<--------------		LOOP 3 (V.36 only)
23	<--------------		EXTERNAL	23	-------------	>	EXTERNAL
			TRANSMIT				TRANSMIT
			CLOCK B				CLOCK B
24	<--------------		EXTERNAL	24	--------------	>	EXTERNAL
			TRANSMIT				TRANSMIT
			CLOCK A				CLOCK A
25	--------------		TEST MODE	25	--------------		TEST MODE

Cables A-3