Avaya T3 (IP) Comfort - Manual (Page 166)

Troubleshooting
166
Look it up whenever in doubt
Troubleshooting Incorrect date and time are displayed
Set the correct time in the System functions ( → p. 131) menu.
Unknown message on the display
Take a look in the section Messages on the display ( → p. 160) to see what the
display means.
The number of a caller is not displayed
Call was transmitted without caller’s number, e.g. an analog call, or the caller has
switched off the caller ID function.
Short tones during a call
A second call is being signalled. Please refer to the section Establishing several con-
nections (
→ p. 27) to find out about possible operating steps.
or
You have activated monitoring or handsfree operation
Appointment signal
An appointment is being signalled.
A function does not work
It is possible that the function first has to be enabled by Avaya Service.
Telephone cuts off prematurely when programming
No key has been pressed for about 60 seconds. This always terminates every pro-
gramming procedure. Programming is also terminated by answering a call.