3Com S330 manual Rts Cts

				Specifications 23
Table 5 PathBuilder S310 System Specifications
X.21 DCE cable pinouts	Signal	Pin # on	Pin # on	Direction
(60-pin connector) to	Name	60-pin	DB-15	(for QSIM)
DB-15 female	Frame GND	46	1
	Circuit GND	15	8
	RTS	1,2	3,10	IN
	CTS	9,10	5,12	OUT
	DSR			OUT
	DCD (not used; tristate when in DTE mode)
	DTR			IN
	LL (not used)			IN
	SD+	28	2	IN
	SD-	27	9	IN
	RD+	11	4	OUT
	RD-	12	11	OUT
	SCTE+			IN
	SCTE-			IN
	SCR+	24	6	OUT
	SCR-	23	13	OUT
	(tristate SCR + and - when in DTE mode,
	double term., double buffer)
	SCT+			OUT
	SCT-			OUT
	Shorting
	GR 1	47,48
	Shorting
	GR 2	51, 52

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