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Cisco Unified IP Phone 7906G and 7911G Administration Guide for Cisco Unified CallManager
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Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network
Providing Power to the Cisco Unified IP Phones 7906G and 7911G
Power Guidelines
Table 2-1 provides guidelines that apply to external power and to PoE power for
the Cisco Unified IP Phones 7906G and 7911G.
Obtaining Additional Information about Power
For related information about power, refer to the documents shown in Table 2-2.
These documents provide information about these topics:
• Cisco switches that work with the Cisco Unified IP Phones 7906G and
7911G
• The Cisco IOS releases that support bidirectional power negotiation
• Other requirements and restrictions regarding power
Table 2-1 Guidelines for Powering the Cisco Unified IP Phones 7906G and 7911G
Power Type Guidelines
External power—
Provided through a Cisco
external power supply
The CP-PWR-CUBE-3 external power supply may be used with the
Cisco Unified IP Phones 7906G and 7911G.
PoE power—Provided by
a switch through the
Ethernet cable attached to
the phone
• The Cisco Unified IP Phones 7906G and 7911G support both Cisco
inline power and IEEE 802.3af Power over Ethernet.
• To ensure uninterruptible operation of the 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 phone deployment. Refer to the documentation
for your switch for operating system version information.
