Siemens hicom 150 e - Display Number of Waiting Calls;Overload

Answering Calls
72
Display Number of Waiting Calls/Overload
You can show the number of external waiting calls
on the display by pressing the Waiting Calls key.
If you are already engaged in a call and the number
of waiting calls exceeds a certain threshold value
(overload) specified by the service technician, the
LED in the key indicates overload.
z
LED is off:
No caller is waiting.
z
LED is flashing slowly:
The number of calls waiting has reached the
pre-defined threshold value (set by the ser-
vice technician)
z
LED is flashing rapidly:
The threshold value has been exceeded
(overload).