Cisco 7965G Administration Guide

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Cisco Unified IP Phone 7965G and 7945G Administration Guide for Cisco Unified Communications Manager 6.0
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Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network
Providing Power to the Phone
Power Guidelines
Table 2-1 provides guidelines that apply to external power and to PoE power for the Cisco Unified IP
Phone 7965G and 7945G.
Table 2-1 Guidelines for Powering the Cisco Unified IP Phone 7965G and 7945G
Power Type Guidelines
External power—
Provided through the
CP-PWR-CUBE-3
external power supply
• The Cisco Unified IP Phone Series use the CP-PWR-CUBE-3 power
supply.
External power—
Provided through the
Cisco Unified IP Phone
Power Injector
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.
IEEE 802.3af PoE
power—Provided by a
switch through the
Ethernet cable attached to
the phone
• The Cisco Unified IP Phone 7965G and 7945G support IEEE 802.3af
Class 3 power on signal pairs and spare pairs.
• The Cisco Unified IP Phone 7965G and 7945G do not support Cisco
inline PoE.
• 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.
Phone Power Consumption and Display Brightness
The power consumed by a phone depends on its power configuration. See Table 2-1 for a power
configuration overview. See Table 2-2 for the maximum power consumed by a phone for each
configuration option and the correlating phone screen brightness level.
Note Power consumption values shown in the table include power losses in the cable that connects the phone
to the switch.
Table 2-2 Power Consumption and Display Brightness for Power Configurations
Phone Model Power Configuration
Max. Power
Consumed
from a Switch
Phone
Screen
Brightness
Cisco Unified
IP Phone
7965G and
7945G
IEEE 802.3af Class 3 power from a Cisco switch, with
bidirectional power negotiation enabled
12 W Full
External power — Full

Cisco 7965G Specifications

General

Brand	Cisco
Model	7965G
Category	IP Phone
Language	English