Panasonic KX-TC1871ALB Operating Instructions Manual page 21

With the base unit
Make sure the unit is in the standby mode.
≥To select HIGH (preset) or LOW,
(RINGER)
press .
Each time you press the button,
the ringer volume will change and
the selected volume will ring.
≥To turn the ringer OFF, press and hold
(RINGER)
until 2 beeps sound. "Ringer
off" will be displayed.
≥To turn the ringer ON, press
The ringer will sound at the HIGH level.
HIGH
LOW
OFF
(RINGER)
.
(RINGER)
Ringer
Low High
(RINGER)
Ringer
Low High
Ringer off
21