Cisco 7961G Administration Guide

Chapter 2 Preparing to Install the Cisco IP Phone on Your Network
Providing Power to the Cisco IP Phone
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Cisco IP Phone Administration Guide for Cisco CallManager, Cisco IP Phone 7961G/7961G-GE and 7941G/7941G-GE
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You can resolve these issues by isolating the voice traffic onto a separate VLAN.
The switch port that the phone is connected to would be configured to have
separate VLANs for carrying:
• Voice traffic to and from the IP phone (auxiliary VLAN on the Cisco Catalyst
6000 series, for example)
• Data traffic to and from the PC connected to the switch through the access
port of the IP phone (native VLAN)
Isolating the phones on a separate, auxiliary VLAN increases the quality of the
voice traffic and allows a large number of phones to be added to an existing
network where there are not enough IP addresses for each phone.
For more information, refer to the documentation included with a Cisco switch.
You can also access related documentation at this URL:
http://www.cisco.com/univercd/cc/td/doc/product/lan/index.htm
Related Topics
• Understanding the Phone Startup Process, page 2-9
• Network Configuration Menu, page 4-6
Providing Power to the Cisco IP Phone
The Cisco IP Phone 7961G, 7961G-GE and 7941G, 7941G-GE 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.
The following sections provide more information about powering a phone:
• Power Guidelines
• Obtaining Additional Information about Power
• Related Topics
Power Guidelines
Table 1 provides guidelines for powering the Cisco IP Phone 7961G and 7941G.

Cisco 7961G Specifications

General

Brand	Cisco
Model	7961G
Category	IP Phone
Language	English