Specifications

Cisco Unified Wireless IP Phone 7921G Series Deployment Guide 108
Hardware Diagnostics
As of the 1.3(4) release, a self-diagnostics tool is now available which can help with hardware analysis.
The Diagnostics menu is located under Phone Settings menu, where then the Keypad, Speaker, Microphone and Wireless LAN
Radio and Antenna can be validated.
The WLAN diagnostics menu is the standard Site Survey utility, which will use the current network profile information to
perform passive and active scans for the configured SSID and 802.11 mode.
Firmware Recovery
If the Cisco Unified Wireless IP Phone 7921G does no boot properly, then the firmware can be recovered via the USB
connection.
1. Power on the phone while holding down the application button and the speakerphone button simultaneiously and keep
it helf until “Starting Recovery Mode” is displayed.
2. A firmware check will then be performed.