Nortel Networks 400 4.0 Null modem cable setup, To display the configuration menus, Pin Signal

180Chapter 13 Initializing the system

Null modem cable setup

Table 63 and Figure 91 show the correct wiring for the BCM serial port of the null modem cable.

Table 63 Serial port pinout

Pin	Signal
1	Data Carrier Detect (DCD)
2	* Serial data in (RX)
3	* Serial data out (TX)
4	Data Terminal Ready (DTR)
5	* Ground

* required connections

Pin	Signal
6	Data Set Ready (DSR)
7	Request to Send (RTS)
8	Clear to Send (CTS)
9	Ring Indicator (RI)

Figure 91 Serial pinout

1 2 3 4 5

6 7 8 9

Transmission parameters:

•9600 bits per second

•8 data bits

•no parity

•1 stop bit

•hardware flow control

Note: For instructions about how to set the transmission parameters, refer to the terminal or terminal emulation program documentation. The BCM system supports carriage return.

To display the configuration menus

1Attach the null modem cable to the serial port on the BCM main unit.

Note: The location of the transmit (TX) and receive (RX) pins on your terminal can vary. Refer to your terminal or computer documentation to confirm pin locations.

2Attach the other end of the null modem cable to the serial port on the terminal or computer.

3Ensure that the BCM main unit and your terminal or computer are turned on.

4Access the BCM main unit using one of the following methods:

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