RS-232 Straight-Through Cable

Table A-2 represents the minimum pinouts required for an RS-232 straight-through cable. The modem end of the cable is a 25-pin male connector. The RMON MultiProbe Module end of the cable is a 25-pin female connector.

Table A-2. RS-232 Straight-Through Cable Pinouts

 

 

RMON

Modem

 

MultiProbe

 

 

Module

 

 

 

2

(Tx)

2

 

 

 

3

(Rx)

3

 

 

 

4

(RTS)

4

 

 

 

5

(CTS)

5

 

 

 

6

(DSR)

6

 

 

 

7

(GND)

7

 

 

 

8

(DCD)

8

 

 

 

20

(DTR)

20

 

 

 

22

(RI)

Not connected

 

 

 

23

(SR)

Not connected

 

 

 

A - 10 Ethernet RMON MultiProbe Module Installation and Operation Guide

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3Com RMON-EMP-3 Table A-2. RS-232 Straight-Through Cable Pinouts, Modem MultiProbe Module