2.1 Before Operating the Telephones22 OperationWhen You Use a Panasonic Proprietary TelephoneWhen you use a Panasonic Proprietary Telephone and the DSS Console, they may have some of theuseful function buttons listed below. These buttons make operations simple. The illustrations maydiffer from the buttons on your telephone.Used to answer an incoming call. Call Forwarding / Do Not Disturb:Used to perform Call Forwarding or DoNot Disturb.Used to receive an incoming intercomcall in the hands-free mode or mute themicrophone during a conversation.Used to place a call on hold.Used for System Speed Dialling orstoring programme changes.Used to make or receive an intercomcall.CO: Used to make or receive anoutside call. A Loop-CO buttonsupports all lines. Pressing this buttonseizes an idle line automatically.(Button assignment is required.) Alsoused as the desired function buttons.(Button assignment is required.)(Only the CO "number" (e.g. 1, 2) maybe shown on some telephones.)Jog Dial: Used to adjust the volumeand the display contrast or selectdesired items for each function.Conference: Used to establish a three-party or five-party conference call.Used to leave a message waitingindication or call back the party who leftthe message waiting indication.DSS: Used to access the extension.(Only the "S" may be shown on sometelephones.)Used to shift the display to accessvarious features.(KX-T7531 only)Used to send a flash signal to theCentral Office or another connectedPBX. Or used to disconnect the currentcall and make another call withouthanging up.Used for hands-free dialling. You canmonitor the party's voice hands-free.Function:Located beside the display.Used to perform the displayed functionor operation.Used to insert a pause during dialling.Used as the PROGRAM button if it isnot equipped.FWD/DNDAUTO ANS/MUTEHOLDAUTO DIAL/STOREINTERCOM(CO)CONFMESSAGE(DSS)MODEFLASHMONITORPAUSE