8
Volume control key. Turn down or turn up all kinds of
volume by pressing these two keys.
Mute key. In the call mode, press this key in calling mode,
you can hear the other side, and the other side cannot hear
you; press this button again to leave this mode.
When the phone call is ringing, press this button to turn
off the ring tips.
Confirm key.
Delete key.
R/Send key. Use the key to dial the last call number. It
also could be used to make a phone call by sending a
phone number.
Navigation key.
Menu key.
Phone book. Tap to enter the contacts interface.
Call log. Tap to see call logs.
Headset key.
Digital keyboard.
Multi-media Video Phone UTT-990 User Manual
