Procedure:

1. Connect a proper cable between the port and modem.
2. Connect to the modem with tip.

   tip -38400 /dev/dty/a001s

   The speed (38400) and device (/dev/dty/a001s) are used as examples in the previous tip command.

3. Enter one of the following commands depending on your modem:

   Command	Comment
   AT&H1&B0&W	Typically works for a US Robotics modem
   AT&H1&W	Typically works for a Hayes or other modem

4. Terminate the connection to the modem with a tilde-period command (from a newline):

   ~.

5. Access admintool by entering this command at a root prompt:

   admintool

6. Select Browse > Serial Ports.
7. Select a device.
8. Select Edit > Modify.
9. Configure the device parameters. Typically a terminal device is set to Terminal-Hardwired and Service Enabled.
10. Set the Baud Rate.

    Note that the default admintool baud rates cycle, meaning the speed at the end of the corresponding /etc/ttytype entry is different than the speed at the beginning of the entry. It is often preferable to set them to a fixed rate.

    As an example, this line can be added to /etc/ttytype to configure the device for a 38400 fixed rate.

    38400N:38400 hupcl:38400 hupcl::38400N

    If a custom /etc/ttytype entry is used, set Baud Rate to Other and enter the /etc/ttytype identifier (e.g. 38400N).

11. Edit the file /etc/rc2.d/S99digi (create it if necessary) and add the following command to it:

    ditty rtspace ctspace /dev/dty/a001m

    The device a001m is used as an example in the previous ditty command.