Handspring Treo 600 - Manual (Page 113)

System Sound settings :: 113
System Sound settings
You can immediately silence all sounds on your Treo, including phone ring
tones, Calendar alerts, and system sounds. This does not mute the speaker
on your Treo during a phone call.
1. Slide the ringer switch to Sound Mode Off.
2. To hear all sounds again, slide the ringer switch to Sound Mode On.
When you slide the ringer switch back to the Sound Mode On position, it
restores the previous sound settings. For example, if the Phone ring volume
is set to 7 and you slide the ringer switch to Sound Mode Off, you will not
hear the phone ring. When you move the ringer switch back to Sound Mode
On, the Phone ring volume is still set to 7.
A. Sound Mode On
B. Sound Mode Off
If the ringer switch is set to
no sound, the ringer setting
overrides the sound settings
and all sounds are turned off.
Your Treo includes a silent
alarm that vibrates when the
ringer switch is set to Sound
Mode Off.