1.6.3  Preventing Other People from Using Your Telephone
(Extension Dial Lock)
You can lock your extension so that other users cannot make unauthorised outside calls.
This feature is also known as Electronic Station Lockout.
To lock
Off-hook.
On-hook.
PT/SLT/PS/SIP Extn./S-PS
Enter    77. 
Enter 1. 
177
C.Tone
To unlock
Off-hook.
On-hook.
PT/SLT/PS/SIP Extn./S-PS
extension PIN
Enter    77. 
Enter 0.  Enter extension PIN 
(max. 10 digits).
077
C.Tone
PIN: Personal Identification Number
• If you forget the extension PIN or cannot unlock your extension, consult your manager.
He can clear your extension PIN. Then, you can set the new PIN and unlock your extension
by entering it.
• If your extension is locked by this feature, it cannot perform features as follows:
– Making outside calls
– Changing the call forwarding destination
• If you do not set extension PIN, you cannot lock and unlock your extension.
To make an outside call while your extension is locked
Off-hook.
PT/SLT/PS
74
Enter    47. 
extension PIN
extension no.
your 
extension no.
extension no.
desired
phone no.
Dial your 
extension number.
Enter extension PIN
(max. 10 digits).
If the wrong extension PIN is 
entered, you hear an alarm tone. 
Dial desired 
phone number.
Seize an outside line before 
entering an outside phone number.
C.Tone & 
D.Tone
PIN: Personal Identification Number
1.6.3 Preventing Other People from Using Your Telephone (Extension Dial Lock)
108 Operating Manual