Motorola MC21XX SERIES User Manual page 50

3 - 6 MC21XX Series User Guide
Select 5. Feedback.
4.
Select 2. On Send.
5.
Select 1. Beeper.
6.
Select 4. Volume.
7.
Enter a value between 0 and 3 where 0 is the lowest and 3 the highest.
8.
Select Save.
9.