Multi-Tech Systems FR2201 manual Trunk Cable, RS232C/V.24 * Link Cable

Appendix A - Cabling Diagrams

Trunk Cable

13 12 11 10 9 8 7 6 5 4 3 2 1

25 24 23 22 21 20 19 18 17 16 15 14

TRUNK (RS232/V.35)

RS232C/V.24 * Link Cable

	PIN NO.	PIN NO.
	1	1
	2	2
		CHASSIS GROUND (AA)
	3	3
To		TRANSMIT DATA (BA)
	4	4	To MultiRouter
External		RECEIVE DATA (BB)
	5	5	Link 1,2 or 3
Synchronous		REQUEST TO SEND (CA)	RS232C/V.35
	7	7
Modem/DSU		CLEAR TO SEND (CB)	Connector
	8	8
Connector
		SIGNAL GROUND (AB)
	15	15
		CARRIER DETECT (CF)
	17	17
		TRANSMIT CLOCK (DB)
	20	20
		RECEIVE CLOCK (DD)
	25	25
		DATA TERMINAL READY (CD)
V.35 Adapter Cable Configured on a RS232C/V.35**
		Link Cable

V.35 34-PIN CONNECTOR

Chassis Ground	A	B	Signal Ground
Request To Send	C	D	Clear To Send
Data Set Ready	E	F	Data Carrier Detect
Data Terminal Ready	H	J
	K	L
	M	N
Send Data (A)	P	R	Receive Data (A)
Send Data (B)	S	T	Receive Data (B)
Terminal Timing (A)	U	V	Receive Timing (A)
Terminal Timing (B)	W	X	Receive Timing (B)
Send Timing (A)	Y	Z
Send Timing (B)	AA	BB

CCDD

EEFF

HHJJ

KKLL

MMNN

As viewed from the connector side

	V.35 34-PIN		25-PIN
CONNECTOR (MALE)		CONNECTOR (FEMALE)
	A		1	PROTECTIVE GROUND
	B		7	SIGNAL GROUND
	C		4	REQUEST TO SEND
	D		5	CLEAR TO SEND
	E		6	DATA SET READY
	F		8	DATA CARRIER DETECT
	H		20	DATA TERMINAL READY
	P		2	TRANSMIT DATA A
	R		3	RECEIVE DATA A
	S		12	TRANSMIT DATA B
	T		22	RECEIVE DATA B
	U		23	EXTERNAL TX CLOCK A
	V		17	RECEIVE CLOCK A
	W		25	EXTERNAL TX CLOCK B
	X		18	RECEIVE CLOCK B
	Y		15	TRANSMIT CLOCK A
	a		21	TRANSMIT CLOCK B

*The MultiFRAD RS232C interface circuits have been designed to meet the electrical specificaitons given in EIA (Electronic Industries Association) RS232C and CCITT (Consultative Committee International Telegraph and Telephone) V.24 Standards.

**When configured for V.35 interface operation on the link, the V.35 adapter cable should be used. This cable uses a 25-pin female connector at one end and a 34-pin winchester male connector at the other end.

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