3Com NETBuilder II, Installing Instruction, Page: 32 / 82

2-4 C
HAPTER
2: NETB
UILDER
II 8-S
LOT
B
RIDGE
/R
OUTER
Attaching a PC,
Terminal, or Modem
Attaching a PC, terminal, or modem to your main processor module allows you
to perform the following tasks:
■
Modify firmware parameters.
■
Configure the bridge/router software .
■
Review startup and system operation messages. Some of the
messages displayed by the terminal are more detailed than the information
displayed on the LCD. These detailed messages may help you troubleshoot
startup or operation problems. For more information, refer to the appropriate
main processor module guide.
To connect a PC, terminal, or modem to your main processor module, follow
these steps:
1 Obtain a cable to connect the device to the CONSOLE port on the front panel
of the main processor module.
Figure 2-3 shows the pinouts for a 9-pin female to 9-pin female PC cable. A
null modem-type cable can be used.
Figure 2-4 shows the pinouts for a 9-pin female to 25-pin terminal cable. A
null modem-type cable can be used.
Figure 2-5 shows the pinouts for a 9-pin female to 25-pin male modem cable. A
straight-through-type cable can be used.
WARNING: To eliminate cable noise emission in excess of FCC Part 15,
Subpart J, and EN55022 B, this device cable should be shielded and have
connectors with metallic backshells.
Figure 2-3 9-pin to 9-pin PC Cable (Null Modem-Type)
5 4 3 2 1
9 8 7 6
5 4 3 2 1
9 8 7 6
Name Name Abbr Abbr Pin Pin
9-pin female connector
9-pin female connector
2
3
1
8
7
5
4
6
3
2
7
8
1
5
6
4
TxD
RxD
RTS
CTS
CD
GND
DSR
DTR
RxD
TxD
CD
CTS
RTS
Gnd
DTR
DSR
Transmit Data
Receive Data
Request to Send
Clear to Send
Carrier Detect
Signal Ground
Data Set Ready
Data Terminal Ready
Receive Data
Transmit Data
Carrier Detect
Clear to Send
Request to Send
Signal Ground
Data Terminal Ready
Data Set Ready
To CONSOLE port
To PC serial port