352 CHAPTER 10: TROUBLESHOOTING
Telephone TroubleshootingIf you believe that a problem is associated with a particular telephone,
use these telephone troubleshooting procedures.
Using the Telephone
Local User Interface
(LUI) Utility
The firmware within each NBX Telephone includes a telephone diagnostic
and configuration utility called the Local User Interface (LUI). You can use
the LUI to manually configure a telephone and to test the telephone
To run the LUI utility:
1Disconnect the telephone from the LAN.
2Cycle power to the telephone by disconnecting and then reconnecting its
power connector.
For telephones that use a powered Ethernet cable instead of a power
adapter, disconnect and then reconnect the Ethernet cable, and then
press the Program button before the telephone finishes its download of
code from the call processor.
3To start the LUI:
■On the NBX 2102 or 3102 Business Telephones, press the Program
button.
■On the NBX 2101 Basic Telephone, press the MSG button.
4The buttons you use to access and use the LUI utility vary with each type
of supported telephone:
■NBX 3102 Business Telephone buttons are described in Figure 24.
■NBX 2102 Business Telephone buttons are described in Figure 25.
■NBX 2101Basic Telephone buttons are described in Figure26.
Tab le 77 describes the LUI menu items.