Performing a basic reset of a Cisco Unified IP Phone provides a way to recover if the phone experiences an error and provides a way to reset or restore various configuration and security settings.
The following table describes the ways to perform a basic reset. You can reset a phone with any of these operations any time after the phone has started up. Choose the operation that is appropriate for your situation.
|Restart phone||From the Main screen, press Settingsto display the Settings menu, then press **#**. Note This factory reset sequence also works from any other screen that does not accept user input.||Resets any user and network configuration changes that you have made but that the phone has not written to the flash memory to previously saved settings, then restarts the phone.|
Unlock and Lock Options
Configuration options that can be changed from a phone are locked by default to prevent users from making changes that could affect the operation of a phone. You must unlock these options before you can change them.
When options are inaccessible for modification, a locked padlock icon appears on the configuration menus. When options are unlocked and accessible for modification, an unlocked padlock icon appears on these menus.
To unlock or lock options, press **#. This action either locks or unlocks the options, depending on the previous state.
If a Settings Menu password has been provisioned, SIP phones present an “Enter password” prompt after you enter **#.
Make sure to lock options after you have made your changes.
Do not press **# to unlock options and then immediately press **# again to lock options. The phone will interpret this sequence as **#**, which will reset the phone. To lock options after you unlock them, wait at least 10 seconds before you press **# again.
When you perform a factory reset of the Cisco Unified IP Phone, the following information is erased or reset to its default value:
- CTL file: Erased
- LSC: Erased
- User configuration settings: Reset to default values
- Network configuration settings: Reset to default values
- Call histories: Erased
- Locale information: Reset to default values
- Phone application: Erased (phone recovers by loading the appropriate default load file, which depends on the phone model term75.default.loads, term71.default.loads, term70.default.loads, term65.default.loads, or term45.default.loads)
Before you perform a factory reset, ensure that the following conditions are met:
- The phone must be on a DHCP-enabled network.
- A valid TFTP server must be set in DHCP option 150 or option 66 on the DHCP server.
- The default load file for your phone model and the files specified in that file should be available on the TFTP server that is specified by the DHCP packet.
To perform a factory reset of a phone, follow these steps:
|Step 1||Unplug the power cable from the phone and then plug it back in. The phone begins the power-up cycle.|
|Step 2||While the phone is powering up, and before the Speaker button flashes on and off, press and hold #. Continue to hold # until each line button flashes on and off in sequence in orange (for the Cisco Unified IP Phone 7975G, 7971G-GE and 7970G) or amber (for the Cisco Unified IP Phone 7965G and 7945G).|
|Step 3||Release # and press 123456789*0#. You can press a key twice in a row, but if you press the keys out of sequence, the factory reset does not take place. After you press these keys, the line buttons on the phone flash orange and then green (for the Cisco Unified IP Phone 7975G, 7971G-GE and 7970G) or red (for the Cisco Unified IP Phone 7965G and 7945G), and the phone goes through the factory reset process. This process can take several minutes. Do not power down the phone until it completes the factory reset process, and the main screen displays.|