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
•
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
•
Cisco Unified IP Phone Power Injector, page 2-4
•
Obtaining Additional Information about Power, page 2-5
•
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