Line Users press this button to dial a number or to answer an incoming call. You must have added line numbers on the user phone for this button to work. When users press this button, they are initiating a Meet-Me conference and they expect other invited users to dial into the conference. You must have configured a Meet-Me conference device in Cisco CallManager Administration for this button to work. Message waiting Users press this button to connect to the voice messaging system.
None Use None to leave a button unassigned.
Redial Users press this button to redial the last number dialed on the Cisco IP Phone. No configuration is necessary for this feature to work. Speed-dial Users press this button to speed dial a specified number. Users can designate speed-dial numbers in the User Web pages. Transfer Users press this button to transfer an active call to another directory number.