The following processes can be used to reset the phone.
To perform a soft reset from the phone's menu:
1.On the phone's display, press 
Settings.
2.Click Admin Login and enter the phone's admin password.
3.Click Phone and scroll down.
4.Click Factory Reset.
5.To confirm, click OK.
6.The phone is rebooted and all existing settings returned to default.
To perform a hard reset:
This method of resetting the phone also causes it to revert to its previous version of firmware.
1.Disconnect the power supply cable.
2.Insert the PoE cable into the network connection socket.
3.Repeatedly tap the mute button on the touch screen.
4.When the LED's turn red, press the volume up button once.
5.The phone reboots to its default settings.
6.The phone also reverts to any previous firmware it has if any. Therefore, if required you will need to upgrade the phone firmware.
