Yealink SIP-T21 E2 User Manual page 42

User Guide for the SIP-T21(P) E2 IP Phone
respectively.
3. Press the Save soft key to accept the change or the Back soft key to cancel.
Note
The unlock PIN length must be within 15 digits.
To unlock the phone via phone user interface:
1. Press any locked key, the LCD screen prompts "Unlock PIN".
2. Enter the PIN in the Unlock PIN field.
3. Press the OK soft key to unlock the phone.
The icon disappears from the LCD screen.
You can long press
phone again.
Note You can also unlock the phone by administrator password. When you enter the
administrator password to unlock the phone, the phone will turn to the Change PIN
screen.
To deactivate the phone lock via phone user interface:
1. Press Menu->Settings->Advanced Settings (default password: admin) ->Phone
Lock.
2. Press
32
or wait for a period of time (if configured) to lock the
or , or the Switch soft key to select Disabled from Lock Enable field.