Console port to 9-pin com port on pc, Console port to 25-pin dce port on modem, Console port to 25-pin dte port on pc – LevelOne GSW-2600TXM User Manual

Page 196

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6.1.2.Console Port to 9-Pin COM Port on PC

Switch’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

6.1.3.Console Port to 25-Pin DCE Port on Modem

Switch’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

6.1.4.Console Port to 25-Pin DTE Port on PC

Switch’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

1 1
2 3
3 2
4 8
5 20
6 7
7 4
9 5
20 6

22 RI

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