This happens with most normal restarts. Having processed the upgrade script file, the software determines that the name of the boot file in the phone and the phone application file match those specified in the upgrade script.
System-specific registration with the switch is started. The phone requests the extension number it should use and the password.
By default, the phone displays the last extension number it used. To accept, press #.
Whilst a password request is shown, password verification is not performed except if the user changes the extension number.
The password is checked against is the extension's Phone Password stored in IP Office Manager. If a Phone Password has not been set, the system will also check the matching user's Login Code. Pre-IP Office Release 9.0 systems only use the matching user's Login Code.
Upon completion of registration, a dial-tone is available on the phone if it has also been able to obtain an extension license or user subscription.
