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352 CHAPTER 10: TROUBLESHOOTING
Telephone
Troubleshooting
If 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:
1 Disconnect the telephone from the LAN.
2 Cycle 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.
3 To 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.
4 The 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 Figure 26.
Table 77
describes the LUI menu items.