Display message Cause & RemedyThe battery needs to be charged. Recharge thebattery (p. 10, 11).The battery has been discharged. The handsetwill not work. Charge the battery fully (p. 10, 11).The handset has lost communication with thebase unit. Move closer to the base unit, and tryagain.• The called handset/base unit is in use.• The handset you are calling is too far from thebase unit.• If the radio communication between thehandset and the base unit is partially impaired,this display will be shown.• If more than one unit is in use, such asconducting an external/internal call or listeningto messages, you may not be able to useanother unit. Try again later.• If the Answering System is responding to a callor another user is listening to messages in theAnswering System, you cannot access theAnswering System. Try again later.• You cannot join the conference call. Amaximum of 2 handsets can take part in aconference call.• While 2 other handsets are making aconference call, you cannot operate thehandset. Try again later.When you tried to register or deregister thehandset, the handset and the base unit could notlink for some reason, such as interference fromother electrical appliances. Take the handset andthe base unit away from the electrical appliancesand try again.64If the Following Appear...If the unit detects a problem, one of the following messages will bedisplayed on the handset. Error beeps or a busy tone will sound.RechargeError!!No link to baseMove closer tobase, try againCharge for 15hBusy