Cisco Unified Communications Manager and TFTP Service Status
Problem
If the Cisco Unified Communications Manager or TFTP services are not running, phones might not be able
to start up properly. However, in such situations, it is likely that you are experiencing a system-wide failure
and that other phones and devices are unable to start up properly.
Cause
The wireless phone attempts to open a TCP connection to all the Cisco Unified Communications Manager
servers that are part of the assigned Cisco Unified Communications Manager group.
Solution
If the Cisco Unified Communications Manager service is not running, all devices on the network that rely on
it to make phone calls will be affected. If the TFTP service is not running, many devices will not be able to
start up successfully.
For more information, see the Cisco Unified Communications Manager documentation.
Configuration File Corruption
Problem
If you continue to have problems with a particular phone that other suggestions in this chapter do not resolve,
the configuration file might be corrupted.
Solution
Create a new phone configuration file. See
Create New Configuration File, on page 228
.
Cisco Unified Wireless IP Phone Resets Unexpectedly
If users report that their phones are resetting during calls or resetting while idle on their desk, you should
investigate the cause. If the network connection and Cisco Unified Communications Manager connection are
stable, a Cisco Unified Wireless IP Phone should not reset on its own.
Typically, a phone resets if it has problems connecting to the access point and LAN or to
Cisco Unified Communications Manager. The following sections can help you identify the cause of a phone
resetting in your network.
Phone Resets Due to Access Point Setup
Problem
The AP may not be configured correctly.
Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Administration Guide
215
Troubleshooting
Cisco Unified Wireless IP Phone Resets Unexpectedly
