Set to None if you have an internal modem. Consult your modem manual if you are not sure which of the settings to choose. Tone dialling is when a number dialled results in a single tone. It will help you diagnose phone line related problems. Initially set to Autodetect Init String.
Initialization strings are specific to each make and model of modem.
FreePPP will use these strings to ensure that your connection is optimized for PPP communications. If you are using a modem that FreePPP does not recognize then you will have to select Use and then specify a string recommended by the modem manufacturer. Click OK to save any changes you have made. Change the settings to match those displayed in Figure 7. Figure 7 Restart your Mac and test your PPP connection.