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Cisco Wireless IP Phone 7920 Administration Guide for Cisco CallManager Release 3.3 or Later
OL-3930-02
Chapter 9 Troubleshooting the Cisco Wireless IP Phone 7920
Troubleshooting Tips for the Cisco 7920 Configuration Utility
• TFTP or Network Errors, page 9-27
• Security Errors, page 9-28
Troubleshooting Information for Basic Problems
Mismatched basic settings are the most common causes of loss of connectivity
with the Cisco Wireless IP Phone 7920. If the Cisco 7920 Configuration Utility
does not communicate with the client phone, check the following settings:
• USB Driver
• PC Internet Protocol
See the “Installing the USB Driver” section on page 4-5 for instructions on setting
up the system.
Windows User Interface Operation Errors
When you are entering values into the Windows fields, you might encounter the
following errors. Table 9-2 lists error codes, possible problems, and possible
solutions for Windows user interface (UI ) operations when working with the
Cisco 7920 Configuration Utility.
TCP Connection Errors
Table 9-3 lists error codes, possible problems, and possible solutions for TCP
connection errors when working with the Cisco 7920 Configuration Utility.
Table 9-2 Windows UI Operation Errors
Error Code Possible Problem Possible Solution
ERR001
String length is too long. Shorten the string length.
ERR002
Number is out of range. Enter the number in the proper range.
ERR003
Incorrect IP address format. Set the IP address in the range of 1.0.0.1 to
255.255.255.255, and set the subnet mask in the
range of 1.0.0.0 to 255.255.255.255.