Yealink T4 Series User Manual page 78

User Guide for T4 Series IP Phones
Unlocking the Phone
Note
Deactivating the Phone Lock
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Procedure:
Press any locked key, the LCD screen prompts you to enter an unlock PIN.
1.
On the SIP-T48S/T48G IP phone, press any locked key or tap the touch screen.
Enter the desired PIN in the Unlock PIN field.
2.
Press OK.
3.
The lock icon disappears from the LCD screen.
You can long press the # key or wait for a period of time (if configured) to lock the phone
again.
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.
Procedure:
Navigate to Menu->Basic->Phone Lock.
1.
For the SIP-T42S/T42G/T41S/T41P/T40G/T40P IP phone, navigate to
Menu->Settings->Basic Settings->Phone Lock.
Enter the desired PIN (default PIN: 123) in the Unlock PIN field, and then press OK.
2.
For the SIP-T48S/T48G IP phone, tap Save.
Select Disabled from the Lock Enable field.
3.
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