Panasonic GD87 - Manual (Page 19)

Setting Quiet Mode
This mode silences the tones, such as low battery and key
tones, etc. Vibration and/or ring tone can be changed to make
your own Quiet Mode setting.
From Idle mode:
My Phone >
Quiet Mode
Select Ring
Volume or
Vibration
Select
required
setting
Setting Ring and Key Volume
My Phone >
Sounds
Select
Ring Volume
or Key
Volume
Adjust the
volume level
Setting the Key Tone Type
My Phone >
Sounds >
Key Tone
Select
required
tone
Note: If you increase the ring volume above maximum it will set
an escalating ringtone. If you turn the ring volume off, the silent
indicator icon ([) will be displayed.
Basic Operation
21
Basic
Operation
Basic
Operation
On/Off
On