C H A P T E R 2 Preparing To Install The Cisco Unified Ip Phone On Your Network; Providing Power To The Cisco Unified Ip Phone; Power Guidelines - Cisco 3951 Administration Manual

Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network

Providing Power to the Cisco Unified IP Phone

Note

Power Guidelines

OL-10969-01
Related Topic
Telephony Features Available for the Cisco Unified IP Phone, page 5-1
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The Cisco Unified SIP Phone 3951 can be powered with external power or with
Power over Ethernet (PoE). External power is provided through a separate power
supply. PoE is provided by a switch through the Ethernet cable attached to a
phone.
When you install a phone that is powered with external power, connect the power
supply to the phone and to a power outlet before you connect the Ethernet cable
to the phone. When you remove a phone that is powered with external power,
disconnect the Ethernet cable from the phone before you disconnect the power
supply.
The following sections provide more information about powering a phone:
Power Guidelines, page 2-3
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Cisco Unified IP Phone Power Injector, page 2-4
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Obtaining Additional Information about Power, page 2-5
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Table 2-1 provides guidelines for powering the Cisco Unified SIP Phone 3951.
Cisco Unified SIP Phone 3951 Administration Guide for Cisco Unified CallManager 5.1
Providing Power to the Cisco Unified IP Phone
2-3