Power Outage - Cisco 8811 Administration Manual

The documents in the following table provide more information on the following topics:
• Cisco switches that work with Cisco IP Phones
• Cisco IOS releases that support bidirectional power negotiation
• Other requirements and restrictions about power
Table 9: Additional Information
Document topics
PoE Solutions
UPoE
Cisco Catalyst Switches
Integrated Service Routers
Cisco IOS Software

Power Outage

Your access to emergency service through the phone requires that the phone receive power. If a power
interruption occurs, service or emergency calling service dialing does not function until power is restored. If
a power failure or disruption occurs, you may need to reset or reconfigure the equipment before you can use
service or emergency calling service dialing.
Power Reduction
You can reduce the amount of energy that the Cisco IP Phone consumes by using Power Save or EnergyWise
(Power Save Plus) mode.
Power Save
In Power Save mode, the backlight on the screen is not lit when the phone is not in use. The phone
remains in Power Save mode for the scheduled duration or until the user lifts the handset or presses
any button.
Set up each phone to enable or disable Power Save settings. You can configure the phones to dim the
backlight on a schedule.
URL
http://www.cisco.com/c/en/us/solutions/enterprise-networks/
power-over-ethernet-solutions/index.html
http://www.cisco.com/c/en/us/solutions/enterprise-networks/
upoe/index.html
http://www.cisco.com/c/en/us/products/switches/index.html
http://www.cisco.com/c/en/us/products/routers/index.html
http://www.cisco.com/c/en/us/products/ios-nx-os-software/
index.html
Cisco IP Phone 8800 Series Administration Guide for Cisco Unified Communications Manager
Phone Power Requirements
11