User Guide SIP-T26P IP Phone26To unlock the keypad via phone user interface:1. Press any locked key, the LCD screen prompts “Please Enter PIN”.2. Enter the PIN in the PIN field.3. Press the Confirm soft key to unlock the keypad.The icon disappears from the LCD screen.You can long press to lock the keypad again.To deactivate the keypad lock via phone user interface:4. Press Menu->Settings->Advanced Settings (password: admin) ->Keypad Lock.5. Press or , or the Switch soft key to select Disable from the Keypad Lockfield.6. Press the Save soft key to deactivate the keypad lock.You can also activate or deactivate the keypad lock via web user interface at the pathPhone->Preference.NoteYou can press the Volume key to adjust the receiver volume of currently used audiodevices (handset, speakerphone or headset), when the phone is in the dialing interfaceor during a call. You can also press the Volume key to adjust the ringer volume when thephone is idle.To adjust the volume:1. Press to adjust the ringer volume when the phone is in the idlescreen.The default PIN for unlock is 123, you can also unlock the keypad by administratorpassword. When you enter the administrator password to unlock the keypad, the phonewill then turn to the Reset Phone PIN interface.