IBM Netfinity 4500R, User Reference Manual

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100
IBM® Netfinity® 4500R User’s Reference
Input/Output ports
Serial ports
Your server has two standard serial ports: Serial port A and Serial port B. The
operating system can use both serial ports; it shares Serial port A with the integrated
Netfinity Advanced System Management Processor. A third serial port is used by
only the Netfinity Advanced System Management Processor. (See “Advanced System
Management ports” on page 103.)
Some application programs require specific ports, and some modems function
properly only at certain communication port addresses. You might need to use the
Configuration/Setup Utility program to change communication port address
assignments to prevent or resolve address conflicts.
Viewing or changing the serial-port assignments
To view or change the serial-port assignments:
1. Restart the server and watch the monitor screen.
2. When the message Press F1 for Configuration/Setup appears, press F1.
3. From the main menu, select Devices and I/O Ports; then, press Enter.
Note: The Device and I/O Ports choice appears only on the full configuration
menu. If you set two levels of passwords, you must enter the
administrator password to access the full configuration menu.
4. Select the serial port; then, use the arrow keys to advance through the settings
available.
5. Select Save Settings; then, select Exit Setup to exit from the Configuration/Setup
Utility main menu.
Serial-port connectors
The following table shows the pin-number assignments for the 9-pin, male D-shell
serial-port connectors on the rear of your server. These pin-number assignments
conform to the industry standard.
Pin Signal Pin Signal
1 Data carrier detect 6 Data set ready
2 Receive data 7 Request to send
3 Transmit data 8 Clear to send
4 Data terminal ready 9 Ring indicator
5 Signal ground
Table 11. Serial-port connectors pin-number assignments
1 5
6 9