1.1 General Features
78 Feature Manual
• TRS—Extension Lock Class
The class of service (COS) of extensions locked by the Extension Lock or Remote Extension Lock
feature can be assigned ( [312] TRS—Extension Lock Class) so that even a locked extension can
make outside (CO) line calls. The higher COS number will take precedence. If, for example, COS 3 is
assigned to an extension ( [601-603] TRS-COS—Day/Night/Lunch) and the COS of locked
extensions is assigned as "4", when the extension is locked, the PBX allows the extension user to make
outside (CO) line calls using COS 4.
• Extension Lock—CANCEL ALL
The operator or manager can cancel this feature for all extensions simultaneously.
• This feature also functions as Call Log Display Lock, Incoming ( 1.1.18 Call Log, Incoming).
The Incoming Call Log for the common area can only be locked or unlocked by the operator or manager
(Call Log Display Lock, Incoming in the Common Area).
• This feature will not block Emergency Calls ( 1.1.49 Emergency Call).
Programming Manual References
[PT Programming]
[108] Flash/Recall Mode for a Locked Extension
[312] TRS—Extension Lock Class
[601-603] TRS-COS—Day/Night/Lunch
[PC Programming]
9.1.11 Detail [1-10]—Extension—Flash/Recall Mode for a Locked Extension
9.5.1 Class of Service (COS) [5-1]—Day, Night, Lunch
9.5.4 Emergency Number & Others [5-4]—Extension Lock Class
Feature Manual References
1.1.18 Call Log, Incoming
1.1.49 Emergency Call
1.1.107 Remote Extension Lock
1.1.117 Toll Restriction (TRS)
Operating Manual References
1.3.44 Extension Lock
2.1.7 System Feature Assignment—Extension Lock—CANCEL ALL
1.1.56 External Feature Access (EFA)
Description
An extension user can access features of a host PBX or the telephone company, such as Call Waiting. An
EFA (External Feature Access) signal is sent to the host PBX or the telephone company. This feature is only
available during outside (CO) line calls, including Host PBX Access (
1.1.65 Host PBX Access Code
(Access Code to the Telephone Company from a Host PBX)).
