# Define a Serial Port

Perform the following steps to define a serial port that enables the RS-232 Message Waiting Indicators Interface application and allows for RS-232 cabling:

1. Reach the NuPoint Voice Configuration Offline Menu:

   From the Main Menu, select (S) System Maintenance, (R) Reconfiguration, (R) Reconfigure System, and then (G) Offline Menu.

2. If desired, duplicate the configuration by selecting (B) Duplicate Active Configuration.

   The server copies the current (active) configuration. When copying is completed, the short form of the Offline Menu appears.

   All subsequent steps in this procedure – along with any other configuration entries – affect just the copy, and take effect only after you activate the configuration.

3. Select (M) RS232 Application Only.

4. Specify the serial port index by selecting (P) Serial Port Selected.

   At the prompt Enter a serial port index (0-2) =, enter one of the following:

   - 1 to indicate index 1

   - 2 to indicate index 2

   - 0 to disable the port and the RS-232 Message Waiting Indicators Interface application.

5. At the prompt Enter the serial port type, 1 for cpu, 2 for smart card:, enter one of the following to specify the serial port type:

   - 1 to indicate that you will send signals through a CPU-based serial port (serial port 1 or serial port 2)

   - 2 to indicate a smartcard-based serial port, which allows up to 32 ports.

6. At the prompt Enter the serial port number, 1-2:, enter one of the following to specify the serial port type:

   - 1 to indicate CPU-based serial port 1

   - 2 to indicate CPU-based serial port 2

   - 1-32 to indicate a smartcard-based serial port.

   - a smartcard-based serial port, which allows up to 32 ports.

   Note: Do not select serial port 1 if you are using this port for your console.

7. Save the parameter settings by exiting to the Main Menu.

Parent topic: Programming (Text Console)