1.8 Toll Restriction (TRS) Features72 Feature Guide1.8.4 Extension LockDescriptionExtension users can lock their telephones to prevent unauthorised use. This is useful for situations whenextension users must leave their desks temporarily. Any 4-digit code can be used to lock and unlock anextension.This feature is also known as Electronic Station Lockout.Conditions• Remote Extension LockAn extension assigned as the operator or manager extension can remotely lock or unlock an extensionusing a Direct Station Selection (DSS) Console. This feature functions only if the operator or managerhas set the extension password. When the operator or manager locks an extension remotely, theextension's user cannot unlock it. When a user locks an extension, the operator or manager extensioncan override the lock and unlock the extension.This feature is also known as Remote Station Lock Control.• TRS—Extension Lock ClassThe class of service (COS) of extensions locked by the Extension Lock or Remote Extension Lockfeature can be assigned ( TRS—Extension Lock Class [312]) so that even a locked extension canmake outside (CO) line calls. The higher COS number will take precedence. If, for example, COS 3 isassigned to an extension ( TRS-COS—Day/Night/Lunch [601-603]) and the COS of lockedextensions is assigned as "4", when the extension is locked, the PBX allows the extension user to makeoutside (CO) line calls using COS 4.• Extension Lock—CANCEL ALLThe operator or manager can cancel this feature for all extensions simultaneously.• Extension Lock ButtonA flexible DSS button on a DSS Console can be customised as an Extension Lock button.• This feature also functions as Incoming Call Log Display Lock ( 1.16.2 Incoming Call Log).The Incoming Call Log for the common area can only be locked or unlocked by the operator or manager.• This feature will not block Emergency Calls ( 1.5.2.2 Emergency Call).Feature Guide References1.8.1 Toll Restriction (TRS)1.18.2 Flexible ButtonsUser Manual References1.5.3 Preventing Other People from Using Your Telephone (Extension Lock)2.1.1 Locking Other Extensions (Remote Extension Lock)2.1.7 Changing System Settings Using Programming Mode3.1.3 Customising the Buttons
