5.1 Troubleshooting190 Appendix5.1 Troubleshooting5.1.1 TroubleshootingTroubleshooting for wired telephonesProblem RemedyThe telephone does not workproperly.Consult your dealer.I cannot use the telephone. • The telephone is locked.Unlock your telephone. ( 2.5.3 Preventing OtherPeople from Making Outside Calls from Your Telephone(Electronic Station Lockout), 3.1.2 Changing theSettings)• Your telephone is connected to an eXtra Device Port.System programming is required. Consult your dealer.Some features do not work. • System management may restrict certain features.Consult your manager.• The feature numbers have changed.Confirm the revised number and try again.Even though following the manualinstructions, none of the operationswork when using a proprietarytelephone.• The Intercom line was not seized. The seized line,when going off-hook, was changed by personal setting.( 4.1.2 Initial Settings)In the manual, going off-hook means an Intercom lineis seized.If the setting has been changed, press the INTERCOMbutton after going off-hook and follow the instructions.The parallelled single line telephonesdo not ring.• This is the default setting.Change the setting to ring. ( 2.7.10 Setting theParallel Connected Telephone Ringer (ParallelledTelephone))The telephone does not work usingthe personal settings or with othersettings. (One-touch dialling,forwarding destination, etc.)• The extension line has been changed. The previoustelephone's settings have not be cleared.Clear the settings and then programme your desiredsettings again. ( 2.7.11 Clearing the Feature Settingsat Your Extension (Station Programme Clear),4.1.2 Initial Settings, 4.1.3 Customising the Buttons)My proprietary telephone does nothave a function button.• Some models do not have the function button.Change a flexible button to the desired button. (4.1.3 Customising the Buttons)Enter the specified feature number instead of thefunction button. ( 2.1.1 Before Operating theTelephones)