Cisco 7931G - Unified IP Phone VoIP Administration Manual - Page 4

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Providing Power to the Phone

Cisco Unified IP Phone 7931G Administration Guide for Cisco Unified Communications Manager 6.1

2-4

Chapter 2

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 improves 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/en/US/products/hw/switches/tsd_products_support_

category_home.html