1.26 Extension Controlling FeaturesFeature Guide 2391.26 Extension Controlling Features1.26.1 Extension Personal Identification Number (PIN)DescriptionEach extension user can have his own PIN through system programming ( ExtensionPersonal Identification Number (PIN) [005]) or personal programming (Extension PIN[Personal Identification Number]) to set features or access his own telephone remotely.The following features cannot be used without the PIN:a) Live Call Screening (LCS)* ( 1.23.3 Voice Mail DPT (Digital) Integration)b) Incoming and Outgoing Call Log Display Lock ( 1.17.2 Incoming Call Log),Personal Speed Dialling Display Lock ( 1.6.1.5 Speed Dialling—Personal/System)c) Walking Extension ( 1.26.3 Walking Extension)d) Extension Lock ( 1.8.3 Extension Lock)e) Remote Extension Control ( 1.26.5 Remote Extension Control by User) andWalking COS ( 1.8.5 Walking COS)f) Remote Extension Control and Walking COS using DISA ( 1.16.6 Direct InwardSystem Access (DISA))ConditionsWARNINGWhen a third party discovers the personal identification number (PIN) (verified code PIN/extension PIN) of the PBX, there will be a risk that they will make fraudulent phone callsusing the telephone line, and the cost will be charged to your own account. In order toavoid this problem, we strongly recommend the following points:a) Carefully maintain the secrecy of the PIN.b) Specify a complicated PIN as long and random as you can make it.c) Change the PIN frequently.• Extension PIN LockIf the wrong PIN is entered incorrectly three times, the line will be disconnected. If theincorrect PIN is entered a preprogrammed number of times successively, the PIN againstthe extension will be locked. Only an extension assigned as the manager can unlock it. Inthis case, the PIN will be unlocked and cleared.This feature is also known as Station Password Lock.• Remote Extension PIN ClearIf an extension user forgets his PIN, a manager can clear the PIN. Then the extension usercan assign a new PIN.• Extension PIN DisplayIt is possible to select whether to show the extension PIN on the display through systemprogramming. By default, it is shown as dots.*: If an extension user has assigned an extension PIN, this feature cannot be used withoutthe PIN.