1.  With the phone in standby, press RING/VOL/  or  
RING/VOL
/  to cycle through Ringer A High, Ringer A Low, 
Ringer B High, Ringer B Low, and Ringer off.
2.  The phone will sound the different ring tones at different 
volumes. To turn the ringer off, select Ringer Off.
Adjusting the Earpiece and Speaker Volume
Base Speakerphone: You can select eight different volume levels 
for the base speaker. To adjust the base speaker volume while 
on a call, press SELECT/  (louder) or SELECT/  (softer). This 
setting will remain in effect after the telephone call has ended.
Base Corded Handset: You can select the earpiece volume 
from among four volume levels. To adjust the earpiece volume 
of corded handset while on a call, press SELECT/  (louder) or 
SELECT/  (softer). This setting will remain in effect after the 
telephone call has ended.
Cordless Handset: You can select the earpiece volume from 
among four volume levels. To adjust the earpiece volume of 
cordless handset while on a call, press RING/VOL/  (louder) or 
RING/VOL
/  (softer). This setting will remain in effect after the 
telephone call has ended.
Temporarily Muting the Base Ringer
To mute the ring tone temporarily for the base, when the phone 
is ringing, press   (play/stop) on the base. The mute will last 
for the current incoming call only. The ring tone will return to the 
previous setting starting with the next incoming call.
Audio Boost for the Cordless Handset
This feature allows you to hear phone conversations more clearly 
by boosting the high audio frequency tones.
To set audio boost on, slide the AUDIO BOOST ON/OFF switch 
upward. BOOST ON appears on the handset display under the 
volume setting when you start a call. To set audio boost off, slide 
the AUDIO BOOST ON/OFF switch downward.