Cisco 7941G Administration Guide - Page 58

Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network Providing Power to the Cisco Unified IP Phone 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/en/US/products/hw/switches/tsd_products_support_categ ory_home.html Related Topics • Understanding the Phone Startup Process, page 2-10 • Network Configuration Menu, page 4-7 Providing Power to the Cisco Unified IP Phone The Cisco Unified 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. Note 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 2-5 Cisco Unified IP Phone 7961G/7961G-GE and 7941G/7941G-GE for Cisco Unified Communications Manager 6.1 2-4 OL-14620-01