Power Outage; Power Reduction; Power Save Mode - Cisco 8831 Administration Manual

Power outage

Power Type
PoE power: Provided by a switch through the Ethernet
cable attached to the conference phone.
Power outage
Your access to emergency service through the phone requires the phone to receive power. If an interruption
in the power supply occurs, Service and Emergency Calling Service dialling do not function until power is
restored. In the case of a power failure or disruption, you may need to reset or reconfigure equipment before
you can use the Service or Emergency Calling Service dialling.

Power reduction

You can reduce the amount of energy that the phone consumes by using Power Save or EnergyWise (Power
Save Plus) mode.

Power Save mode

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 interacts with the device. In the Device
Configuration window on Cisco Unified Communications Administration, configure the following parameters:
Days Display Not Active
Display on Time
Cisco Unified IP Conference Phone 8831 Administration Guide for Cisco Unified Communications Manager
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Specifies the days that the backlight remains inactive.
Schedules the time of day that the backlight automatically activates. on the days listed in the off schedule.
Cisco Unified IP Phones and telephony networks
Guidelines
• The Cisco Unified IP Conference Phone 8831
supports IEEE 802.3af Class 2 power on signal
pairs and spare pairs.
• When using a sound base in Linked Mode, the
primary sound base must be connected using
the CP-PWR-CUBE-3 external power supply.
• To ensure uninterruptible operation of the
conference phone, make sure that the switch has
a backup power supply.
• Make sure that the CatOS or IOS version
running on your switch supports your intended
conference phone deployment. Refer to the
documentation for your switch for operating
system version information.