Power Guidelines; Power Outage - Cisco 7971G-GE - IP Phone VoIP Administration Manual

Providing Power to the Phone
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Power Guidelines

Table 2-1
Cisco Unified IP Phone 7970 Series.
Table 2-1 Guidelines for Powering the Cisco Unified IP Phone 7970 Series
Power Type
External power— Provided
through the CP-PWR-CUBE-3
external power supply
External power—
Provided through the Cisco
Unified IP Phone Power Injector
PoE power—Provided by a
switch through the Ethernet
cable attached to the phone
Cisco Unified IP Phone 7970G/7971G-GE Administration Guide for Cisco Unified Communications Manager 7.0
2-4
Power Outage, page 2-5
Obtaining Additional Information about Power, page 2-6
provides guidelines that apply to external power and to PoE power for phones the
Guidelines
The Cisco Unified IP Phone Series uses the CP-PWR-CUBE-3 power supply.
The Cisco Unified IP Phone Power Injector may be used with any Cisco Unified IP Phone.
Functioning as a midspan device, the injector delivers inline power to the attached phone.
The Cisco Unified IP Phone Power Injector is connected between a switch port and the IP
Phone, and supports a maximum cable length of 100m between the unpowered switch and
the IP Phone.
The inline power patch panel WS-PWR-PANEL is not compatible with the Cisco
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Unified IP Phone 7970 Series.
To ensure uninterruptible operation of the phone, make sure that the switch has a
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backup power supply.
• Make sure that the CatOS or IOS version running on your switch supports your
intended phone deployment. Refer to the documentation for your switch for operating
system version information.
Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network
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