User Password
Use this option to change your user password. Valid values for entering a password are 0 to 4294967295 (integers only; symbols and alpha characters are not allowed). Default password is an empty string "" (field is blank).
Phone Lock
Use this option to lock the phone from unauthorized users. When the phone is locked, users are unable to dial from the phone unless it has been
unlocked. To unlock the phone, press the | Services | button and enter either |
the user or administrator password.
Note: While the phone is locked, only emergency number dialing is permitted. The default permissible emergency numbers are 911, 999, 112, and 110; this is con- figurable via the WebUI or configuration file.
Hint: To quickly lock your phone, press the Services button followed by the 
key.
Customizing your phone
Model 51i IP Phone Installation Guide 19
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