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Serial port to 9-pin com port on pc, Serial port to 25-pin dce port on modem, Serial port to 25-pin dte port on pc – SMC Networks Barricade SMC7004AWBR User Manual

Page 85

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C

ABLES

B-5

Serial Port to 9-Pin COM Port on PC

Serial Port to 25-Pin DCE Port on Modem

Serial Port to 25-Pin DTE Port on PC

Barricade’s 9-Pin

Serial Port

CCITT Signal

PC’s 9-Pin 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

Barricade’s 9-Pin

Serial Port

CCITT Signal

Modem’s 25-Pin

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

Barricade’s 9-Pin

Serial Port

Null Modem

PC’s 25-Pin DTE

Port

1 DCD

8 DCD

2 RXD

3 TXD

3 TXD

2 RXD

4 DTR

20 DTR

5 SGND

7 SGND

6 DSR

6 DSR

7 RTS

4 RTS

8 CTS

5 CTS

9 RI

22 RI

1

1

2

3

3

2

4

8

5

20

6

7

7

4

9

5

20

6