Cisco 7920 Administration Guide - Page 85

Chapter 3 Setting Up Cisco Wireless IP Phones Installing the Cisco Wireless IP Phone 7920 Active mode-The phone is in active mode when the phone is performing one of the following actions: • Connected to an active call • Scanning for channels • Sending CDP packets • Sending keep-alive messages • Reregistering with Cisco CallManager As long as there is an active RTP stream, the phone remains in active mode and consumes power. The standard battery provides up to 3 hours of talk time in active mode and the extended battery provides up to 4.25 hours of talk time. Standby mode-The phone goes into standby mode two seconds after a scan is complete. The standard battery provides up to 21 hours of standby time and the extended battery provides up to 30 hours of standby time. The phone will awake from standby mode in response to these events: • Key pad activity • Roaming • Power cycling the phone • Losing network connectivity • Losing RF connectivity • Transmitting scheduled CDP or keep-alive packets. Related Topics • Startup Settings for a Network Without DHCP, page 3-25 • Resolving Startup and Connectivity Problems, page 9-2 Startup Settings for a Network Without DHCP If you are not using DHCP in your network, you must configure these network settings on the Cisco Wireless IP Phone 7920: • IP address • Subnet mask • Primary TFTP server IP address OL-7104-01 Cisco Wireless IP Phone 7920 Administration Guide for Cisco CallManager Release 4.0 and 4.1 3-25