Telephone operation
Options while on calls
Volume control
Press 
or 
on the 
VOLUME button on the side of the handset to adjust listening volume. Each button
Volume press raises or lowers volume by one level.
Flash
When you change the volume level, the new setting is saved.
Call waiting
If you subscribe to call waiting service with your local telephone service provider, you will hear a beep if someone calls while you are already on a call. Press 
PHONE/FLASH to put your current call on hold and take the new call.You can press 
PHONE/FLASH at any time to switch back and forth between calls.
Three-way conference calls
While a call is in progress, a person at another handset can press 
PHONE/FLASH or 
SPEAKER to join the call.
A person at either handset can press 
OFF/CLEAR, or place the handset in the base or charger, to drop out of the conference call, but the call will not be terminated until all handsets hang up.
Only two handsets are allowed to connect to an out- side call.
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