Internal Modems: How To Determine Model Installed

1. Open a modem terminal window

Note: Detailed instructions for opening a modem terminal window are provided in the Section titled Using AT Commands in Mac OS 9, and Using AT Commands in Mac OS X in this document.


2. Type ATI12 in the terminal
The modem responds with one of three response codes responses depending on which modem is installed.

3. Look up the response code in the table below to determine which modem is installed in your computer.

Modem Response	Modem Installed	AT Commands Manual	Get Manual
S1	Internal Comm Modem	AT Commands
D1	Internal USB Modem	AT Commands for the Apple Internal USB Modem
Error	Earlier internal Modem	No specific manual available. If you need to use AT Commands with this modem, download and use the Internal Comm Modem manual; AT Commands. A few commands in this manual will not work with this type of modem, but most will.

1. Open the Modem control panel.
Choose Null Modem 9600 from the Modem menu.




2. Close the Modem control panel.
A save dialog appears.

3. Save the changes to the Modem control panel.

4. Open Remote Access control panel.

5. Click Options.

6. Click the Protocol tab.

7. Select Connect to a command-line host:
If Use terminal window is not selected, also select that option.




8. Click OK

9. Enter any number or letter into the number and password area of the Remote Access control panel.
This enables the Connect button.

10. Click Connect.
A modem terminal window appears.

11. Type ATI12 into the terminal, then press return.
The modem result code is returned.

The process for checking the country code under Mac OS X is similar to Mac OS 9.

1. Network system preference.

2. Click the Modem tab.

3. Choose Null Modem 9600 from the Modem menu.




4. Click the PPP tab in the Network system preference.

5. Click PPP options.

6. Select Connect using a terminal window (command line)

7. Click OK




8. Enter any number or letter into the number and password area of the Remote Access control panel.

9. Either open Internet Connect and click connect, or if the Modem status is available in the menu bar, choose connect.
A modem terminal window opens.

10. Type ATI12 into the terminal, then press return.
The modem result code is returned.