3Com NETBuilder II Installing Instruction page 51

To CONSOLE port
9-pin female connector
Name
Receive Data
Transmit Data
Carrier Detect
Clear to Send
Request to Send
Signal Ground
Data Terminal Ready
Data Set Ready
Figure 3-4 9-pin to 9-pin PC Cable (Null Modem-Type)
To CONSOLE port
9-pin female connector
Name
Receive Data
Transmit Data
Carrier Detect
Clear to Send
Request to Send
Signal Ground
Data Terminal Ready
Data Set Ready
Figure 3-5 9-pin to 25-pin Terminal Cable (Null Modem-Type)
5 4 3 2 1
9 8 7 6
Abbr Pin Pin Abbr
RxD TxD
2 3
TxD RxD
3 2
CD RTS
1 7
CTS
8
RTS CTS
8
7
CD
1
Gnd GND
5
5
DTR
DSR
6
4
DSR DTR
6 4
5 4 3 2 1
9 8 7 6
25-pin male or female connector
Abbr Pin Pin
RxD
2 2
TxD
3 3
CD
1 4
CTS
8
RTS
7 5
8
GND
7
5
DTR
6
4
DSR
20
6
Installing the Extended Chassis
To PC serial port
5 4 3 2 1
9 8 7 6
9-pin female connector
Name
Transmit Data
Receive Data
Request to Send
Clear to Send
Carrier Detect
Signal Ground
Data Set Ready
Data Terminal Ready
To terminal
1 2 3 4 5 6 7 8 9 10 11 12 13
14 15 16 17 18 19 20 21 22 23 24 25
Abbr Name
TxD
Transmit Data
RxD
Receive Data
RTS
Request to Send
CTS
Clear to Send
CD
Carrier Detect
GND
Signal Ground
DSR
Data Set Ready
DTR
Data Terminal Ready
3-5