No.	Designation	Explanation
1	Emergency call button (only FC11)	Used to initiate an SOS emergency call. Pre-conditions An emergency call number has been programmed. The handset is logged on to a system-compatible DoiP telephone system. The handset is located within the range of the DECT rado coverage of the telephone system.
2	Socket for headphone/headset	Use a system compatible headphone/headset from the accessory range.
6	Key: LEFT SOFTKEY	Functions according to the condition (Indication in the display via the SOFTKEY)
7	Key: RIGHT SOFTKEY	Functions according to the condition (Indication in the display via the SOFTKEY)
8	Key [R]	Functions Signal key for functions in a telephone system  Hands-free On / Off(long keystroke)
9	Key TELEPHONE DIRECTORY	Functions A short keystroke in the general mode (idle display) opens the last-used telephone directory (handset telephone directory or system telephone directory) A long keystroke after calling up a telephone directory toggles between the handset telephone directory and system telephone directory, insofar as these are set up and available
10	NAVIGATION ROCKER SWITCH The rocker switch has 5 pressure points Right Left Up Down Centre	Functions Press on the centre of the rocker switch operates as for RIGHT SOFTKEY Calling up a menu when in thegeneral mode (idle display) Confirming settings Press right, left, up or down on the NAVIGATION ROCKER Navigation for selection of menus (Icons) or of list entries Short keystroke up or down on the NAVIGATIONROCKER change the volume temporarily during a call long/ short keystroke on the right, left, up, down pressure points open user-programmable (sub) menu
11	Key PICK UP RECEIVER	Functions Accepting an incoming call Initiate dialling of an outgoing call (as en-bloc dialling or individual dialling, depending on the telephone system) Call up redial (long keystroke)
12	Key HANG UP RECEIVER	Functions Ending a call Switch on the handset switch off the handset
13	Key [1]	Functions Digit [1] (Dialling, Text editor) Microphone muting (long keystroke in call condition) Suppress audible signalling (shortcut, long keystroke in general mode (idle display) of the handset) Marking the 1st sub-menu icon of a graphic menu display
14	Numeric keys [1] to [9]	Functions Entry of digits and letters, (dialling, text editor) Open telephone directory, long keystroke in general mode, (idle display) jump to first entry of the letter that has been entered Marking the 2nd to 9th sub-menu icon of a graphic menu display
15	Key STAR / SHIFT	Functions Star character Switch softkey e.g.: Long keystroke in general mode, (idle display, Integral 55) Shift, lower / upper case letters (long keystroke)
16	Key HASH	Functions Hash character Redialling (long keystroke in general mode (idle display) jump to first entry of list
17	Key [0]	Functions Digit [0] Long keystroke to call up the call or message list from the Integral 55