Cisco 7961G Administration Guide - Page 70

Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network Understanding the Phone Startup Process Table 2-4 Cisco Unified IP Phone 7961G/7961G-GE and 7941G/7941G-GE Startup Process Step 1. Obtaining Power from the Switch 2. Loading the Stored Phone Image 3. Configuring VLAN 4. Obtaining an IP Address Description Related Topics If a phone is not using external power, the switch provides in-line power through the Ethernet cable attached to the phone. • Adding Phones to the Cisco Unified CallManag er Database, page 2-12. • Resolving Startup Problems, page 9-2. The Cisco Unified IP Phone has non-volatile Flash memory in which it stores firmware images and user-defined preferences. At startup, the phone runs a bootstrap loader that loads a phone image stored in Flash memory. Using this image, the phone initializes its software and hardware. Resolving Startup Problems, page 9-2. If the Cisco Unified IP Phone is connected to a Cisco Catalyst switch, the switch next informs the phone of the voice VLAN defined on the switch. The phone needs to know its VLAN membership before it can proceed with the Dynamic Host Configuration Protocol (DHCP) request for an IP address. • Network Configuration Menu, page 4-7. • Resolving Startup Problems, page 9-2. 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 4-7. • Resolving Startup Problems, page 9-2. 2-10 Cisco Unified IP Phone 7961G/7961G-GE and 7941G/7941G-GE Administration Guide for Cisco Unified CallManager OL-11528-01