Useful Information55Document Version 2012-08TroubleshootingIf you still have difficulties after following the instructions in this section, disconnect the base unit’s ACadaptor, then reconnect the base unit’s AC adaptor. Remove the batteries from the handset, and theninsert the batteries into the handset again.General useProblem Cause/solutionThe unit does not work. L Make sure the batteries are installed correctly. Refer to theQuick Guide for details.L Fully charge the batteries. Refer to the Quick Guide for details.L Check the connections. Refer to the Quick Guide for details.L Unplug the base unit’s AC adaptor to reset the unit. Reconnectthe adaptor and try again.L The handset has not been registered to the base unit. Registerthe handset (page 42).I cannot hear a dial tone. L Confirm the Ethernet cable is properly connected. Refer to theQuick Guide for details.L Network settings may not be correct. Contact youradministrator for further information.L Many installation issues can be resolved by resetting all theequipment. First, shut down your modem, router, hub, baseunit, and computer. Then turn the devices back on one at a timein this order: modem, router, hub, base unit, computer.L If you cannot access Internet Web pages using your computer,check to see if your phone system is having connection issuesin your area. Contact your administrator for further information.I do not know how to erase“Missed Call” from the display.L There are unviewed missed calls remaining. View them anderase the message in the following way.Handset:1 {CID} (left soft key)2 Push the joystick down to search from the most recent call,or push the joystick up to search from the oldest call.Base unit (KX-TGP550):1 {CID} (right soft key)2 Press {V} to search from the most recent call, or press {^}to search from the oldest call.I cannot remember the passwordfor the Web user interface.L Contact your administrator.