These keys have two roles:

The keys below the display have variable functions. When the key is active, its function is indicated by the text label that appears above it. See Call Soft Keys.

This dial acts as a set of cursor key:

This button, in the center of the cursor keys has multiple functions:

This key is used to access your voicemail system. By default this uses a series of menus on your phone's display. See Voicemail.

This key is used to exit any menu you are in and return to the phone's normal button display. During a call it can also be used to toggle the options displayed on the appearance menu.

This key is used to access a menu for phone settings and information. These are settings stored by the phone itself rather than the telephone system.

This key is used to display the various directories (personal and shared) of names and telephone numbers to which you have access. See Contacts.

This key displays a record of your most recent calls (answered, missed, and outgoing). The button is illuminated when you have new missed calls. See Using the Call Log.

Press + plus or – minus ends of the key to adjust the volume. When the phone is idle, the button adjusts the ringer volume. When on a call, the button adjusts the caller volume on the handset, headset or speaker depending on which is being used at the time.

This key is used to answer and end calls using a headset connected to the phone's headset socket. The button is lit when you are connected to a call using the headset.

This key can be used to mute your speech to the currently connected call. The button is lit while mute is active.

This key is used to answer and end calls using the phone's handsfree speaker and microphone. The button is lit when you are connected to a call handsfree.

If there are outgoing numbers in your call log, display the list of those numbers.

Put your currently connected call on hold.

Put your current call on hold and present dial tone for you to dial the number you want to add to a conference with the held caller.

Put your current call on hold and present dial tone for you to dial the number to which you want to transfer the call.

If you are connected to the call, this option ends the call. If the call is a personal call alerting, this option sends the call to your forward on busy number if set or else to your voicemail if enabled. If it is a hunt group call that is alerting, this option sends the call to the next member of the group.