Cisco 7985G Administration Guide - Page 50

Chapter 2 Preparing to Install the Cisco Unified IP Video Phone on Your Network Understanding the Phone Startup Process Table 2-3 Cisco Unified IP Video Phone Startup Process Step Description Related Topics 1. Obtaining Power from the Switch. You can connect the Cisco Unified IP Phone to a Cisco Catalyst switch with one of the modules that provide power to the phone. If you use this optional configuration, the phone receives phantom power and powers up when you connect the Cisco Unified IP Phone to the switch. The switch allocates power and sends it over the network cable. • Adding Phones to the Cisco Unified CallManager Database, page 2-10. • Resolving Startup Problems, page 9-2. 2. Loading the Stored The Cisco Unified IP Phone none volatile Flash Resolving Startup Phone Image. memory stores firmware images and user-defined Problems, page 9-2. preferences. At startup, the phone runs a bootstrap loader that loads a phone image that is stored in Flash memory. Using this image, the phone initializes its software and hardware. 3. Configuring VLAN. If the Cisco Unified IP Phone connects to a Cisco Catalyst switch, the switch next informs the phone of the voice VLAN that is defined on the switch. The phone must determine its VLAN membership before it can proceed with the Dynamic Host Configuration Protocol (DHCP) request for an IP address. • Network Configuration Menu, page 4-6. • Resolving Startup Problems, page 9-2. 4. Obtaining an IP Address. If the Cisco Unified IP Phone is using DHCP to obtain an IP address, the phone queries the DHCP server to obtain one. If you are not using DHCP in your network, you must assign static IP addresses to each phone locally. • Network Configuration Menu, page 4-6. • Resolving Startup Problems, page 9-2. OL-8726-02 Cisco Unified IP Video Phone 7985G Administration Guide 2-8