Handspring Treo 300 - Manual (Page 202)

Section 7
194 Setting Preferences for Your Phone
4. Tap the Dialing pick list and select TouchTone or Rotary .
Note: Select Rotary only if your telephone service does not support
TouchTone dialing.
5. Tap the Volume pick list and select the speaker volume.
6. Tap Details .
7. Enter the initialization string appropriate for your phone.
8. Hold Option and press Return twice to return to the
Connection Preferences screen.
Digitizer Preferences
The Digitizer Preferences screen opens the digitizer calibration screen.
This is the same screen that appears when you start your phone for the
first time. You can recalibrate your screen after a hard reset, or if your
digitizer drifts.