Cisco 7920 Administration Guide - Page 182

Resolving Startup and Connectivity Problems Chapter 9 Troubleshooting the Cisco Wireless IP Phone 7920 Resolving Startup and Connectivity Problems After installing a Cisco Wireless IP Phone on your network and adding it to Cisco CallManager, the phone should start up as described in the "Understanding the Phone Startup Process" section on page 2-21. If the phone does not start up properly, see the following sections for troubleshooting information: • Symptom: The Cisco Wireless IP Phone Does Not Complete the Normal Start Up Process, page 9-2 • Symptom: The Cisco Wireless IP Phone Does Not Associate with a Cisco Aironet Access Point, page 9-3 • Symptom: The Cisco Wireless IP Phone Does Not Register with Cisco CallManager, page 9-5 Symptom: The Cisco Wireless IP Phone Does Not Complete the Normal Start Up Process When a Cisco Wireless IP Phone connects to the wireless network, the phone should go through its normal startup process and the phone screen should display information. If the phone does not complete the startup process, the cause might be due to low RF signal strength, network outages, a dead battery in the phone, or the phone might not be functional. To determine whether the phone is functional, follow these suggestions to systematically eliminate these potential problems: 1. Verify that the wired network is accessible by placing calls to and from other wired Cisco IP Phones. 2. Verify that the wireless network is accessible: • Power on another previously functional Cisco Wireless IP Phone 7920 to verify that the access point is active. • Power on the Cisco Wireless IP Phone that will not start up and move to a different access point location that is known to be good. 3. Verify that the phone is receiving power: • If you see "Low Battery" on the phone screen, the battery might be dead. Cisco Wireless IP Phone 7920 Administration Guide for Cisco CallManager Release 4.0 and 4.1 9-2 OL-7104-01