Volume 
Flash
PHONE 00:00:12
MICROPHONE MUTED
MUTE
Off
Tone 
Mute
Telephone Operation
Options while on calls
Volume control
Press the VOLUME buttons on the side of the handset to adjust listening volume. Each button press raises or lowers volume by one level.
When you change the volume level, the new setting becomes the default. The new volume level will be applied each time you use the handset, speakerphone or headset.
Call waiting
If you have Call Waiting service, you will hear a beep if someone calls while you are already on a call. Press FLASH to put your current call on hold and take the new call. You can press FLASH at any time to switch back and forth between calls.
3-way conference calls
During an outside call, if you have added new handsets (see page 24) you can use two system handsets for a
While a call is in progress, others can press PHONE or SPEAKER to join the conference call. Others can press OFF 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.
Mute
Press MUTE to silence the microphone. You will be able to hear, but your caller will not be able to hear you until you press MUTE again and resume speaking.
Ring silencing
Press OFF or MUTE while the phone is ringing to silence the ringer.
Temporary tone dialing
If you have dial pulse (rotary) service, you can switch to touch tone dialing during a call by pressing *.
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