User guide

65BusinessPhone – Cordless DT412/DT422
Security
Block extension
æ Press.
*72# Dial to block your extension.
Verification tone.
Un-block extension
æ Press.
#72* Dial.
å Dial your Password.
# Press to re-open.
Verification tone. Your extension is open for use.
Lock the keypad
You can lock your keypad to avoid accidental activation or dialling a
number by mistake. The following procedure describes the manual
lock, but it is recommended to always have the automatic lock on.
How to set the automatic key lock, see section “Automatic key
lock” on page 96.
Lock/Unlock the keypad manually
ç* Press to lock/unlock the keypad.
The Key icon indicates that your keypad is locked.