Here is an effective way to change the access settings of Cisco IP Phone.
Choose Menu > Phone Settings menu to change these settings that control access to the phone and phone records.
1.If you want to require the use of a password to unlock the phone when powering it on.
You should: Scroll to and select Phone Lock, then scroll to and select On/Off. Scroll to Off to disable the phone lock or On to require a phone lock password and press Select.
2.If you want to change the phone lock password.
You should: Scroll to and select Phone Lock, then scroll to and select Password. Press Edit to enter the phone lock password (up to 10 numbers including * or #). Press OK to confirm the change and Back to return to Phone Settings.
Note: The default password is set to 12345.
3.If you want to enable the USB port for phone configuration.
You should: Scroll to and select USB Enable/Disable. Scroll to Enable and press Select.
The system administrator uses the USB port for configuring your phone.
4.If you want to erase the local phone configuration and reset to factory default settings.
You should: Scroll to and select Factory Default. The "Restore to Default?" message displays.
Note: All customized phone settings will be erased including network settings.Press OK to reset the phone or Cancel to retain settings.
There are a few things to note:
If you enable the Phone Lock feature and have not changed the password, enter 12345 (default password) to unlock the phone.
• If you change the Phone Lock password and forget it, you must contact the system administrator to have the phone unlocked and reset. You will lose all your personal settings including your Phone Book entries.
• Be aware that restoring factory default settings erases your Speed Dial, Call History, and customized settings. The network settings are changed to defaults so your phone cannot access the network. Only Phone Book data is preserved.
• The system administrator uses the USB port only for phone configuration. When the phone is powered off, the USB port reverts to disabled.
Hope this helps.
By the way, you can check the price of Cisco IP Phone.
Learn more:
How does the Cisco IP phone work?