18 TROUBLESHOOTINGThis chapter contains maintenance and troubleshooting information tohelp you resolve simple problems. It describes these topics:■ Using the Telephone Local User Interface Utility■ The 3Com Telephone Local Configuration Application■ Using H3PingIP■ System-level Troubleshooting■ Connecting a Computer to a Serial Port■ Servicing the Network Call Processor Battery■ Getting Service and SupportThe system hardware needs no routine maintenance. However, performperiodic backups of the configuration and license databases, especiallyafter you make changes to system or user configurations.Using theTelephone LocalUser InterfaceUtilityEach 3Com telephone supports a telephone diagnostic and configurationutility called the Local User Interface (LUI). The LUI utility enables you toperform these tasks:■ View telephone settings, both the active settings and the settingsstored in the telephone’s memory■ Set telephone IP address, subnet mask, and default gateway■ Specify the IP address of the Call Processor■ Test the telephone buttons, display panel, and status lights■ Clear all device settings■ Specify the MAC address of the Call Processor (test environmentoption)■ View firmware information (technician option)
