Cisco 7800 Series Administration Manual page 196

Cisco IP Phone Cleaning
Voice quality metrics do not account for noise or distortion, only frame loss.
Note
Cisco IP Phone Cleaning
To clean your Cisco IP Phone, use only a dry soft cloth to gently wipe the phone and the phone screen. Do
not apply liquids or powders directly to the phone. As with all non-weatherproof electronics, liquids and
powders can damage the components and cause failures.
When the phone is in sleep mode, the screen is blank and the Select button is not lit. When the phone is in
this condition, you can clean the screen, as long as you know that the phone will remain asleep until after you
finish cleaning.
View Phone Information
Procedure
To check the current status of the Cisco IP Phone, click the Info tab.
The Info tab shows information about all phone extensions, including phone statistics and the registration
status.
Reboot Reasons
The phone stores the most recent five reasons that the phone was refreshed or rebooted. When the phone is
reset to factory defaults, this information is deleted.
The following table describes the reboot and refresh reasons for the Cisco IP Phone.
Reason
Upgrade
Provisioning
SIP Triggered
RC
User Triggered
IP Changed
You can view the reboot history as follows:
Cisco IP Phone 7800 Series for Third-Party Call Control Administration Guide
182
Description
The reboot was a result of an upgrade operation (regardless whether the upgrade
completed or failed).
The reboot was the result of changes made to parameter values by using the IP
phone screen or phone web user interface, or as a result of synchronization.
The reboot was triggered by a SIP request.
The reboot was triggered as a result of remote customization.
The user manually triggered a cold reboot.
The reboot was triggered after the phone IP address changed.