SMC Networks 100 Console Port to 9-Pin COM Port on PC, Console Port to 25-Pin DCE Port on Modem

CABLES

Console Port to 9-Pin COM Port on PC

Switch’s 9-Pin			CCITT Signal		PC’s 9-Pin
	Serial Port				COM Port
1	DCD	-----------	DCD ------------		1
2	RXD	<---------	TXD ------------		3
3	TXD	-----------	RXD ----------	>	2
4	DTR	-----------	DSR ----------	>	6
5	SGND	-----------	SGND ----------		5
6	DSR	-----------	DTR ------------		4
7	RTS	-----------	CTS -----------	>	8
8	CTS	<---------	RTS -------------		7
9	RI	-----------	RI ---------------		9

Console Port to 25-Pin DCE Port on Modem

Switch’s 9-Pin		CCITT Signal		Modem’s 25-Pin
Serial Port				DCE Port
1	<	--------- DCD ------------		8
2	<	--------- RXD ------------		3
3	-----------	TXD ----------	>	2
4	-----------	DTR ----------	>	20
5	-----------	SGND ----------		7
6	<	--------- DSR ------------		6
7	-----------	RTS -----------	>	4
8	<	--------- CTS -------------		5
9	<	--------- RI ---------------		22

Console Port to 25-Pin DTE Port on PC

Switch’s 9-Pin		Null Modem		PC’s 25-Pin
	Serial Port				DTE Port
1	DCD	1	1	8	DCD
2	RXD	2	3	3	TXD
3	TXD	3	2	2	RXD
4	DTR	4	8	20 DTR
5	SGND	5	20	7	SGND
6	DSR	6	7	6	DSR
7	RTS	7	4	4	RTS
8	CTS	9	5	5	CTS
9	RI	20	6	22 RI

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