38 | KDC-BT51U/ KDC-5751SD/ KDC-5051UDuring a callDisconnecting a CallPress the [SRC] button.Switching to the Private modePush the Control knob towards right or left.Switches between Private talk (“PRIVATE”) andHands-free talk each time this button is pressed.⁄• Depending on the type of your cell-phone, switchingto the private talk mode may select the source that wasused before commencing the hands-free connection. Ifthis happens, the source cannot be switched back to thehands-free talk mode by operating this unit. Operate yourcell-phone to return to the hands-free talk mode.Adjusting the voice volume during a callTurn the Control knob.Call waitingAnswering another incoming call with thecurrent call suspendedKDC-BT51UPress the [ ] button.KDC-5751SD KDC-5051U1) Press the Control knob.2) Turn the Control knob to select “Answer”, andthen press the Control knob.Answering another Incoming call afterterminating the current callPress the [SRC] button.Continuing the Current Call1) Press the Control knob.2) Turn the Control knob to select “Reject”, andthen press the Control knob.Answering the waiting call after terminatingthe current callKDC-BT51UPress the [ ] button.KDC-5751SD KDC-5051UPress the [SRC] button.Switching between the current call and waitingcallPress the Control knob.Each pressing of this knob switches the callingparty.Operation of hands-free phoningFunction of KDC-BT51U, KCA-BT300/BT200 (Optional Accessory)