User guide

Table Of Contents
Outgoing Calls
BusinessPhone – Analog Telephone18
Automatic Callback
You call an extension and receive busy tone or get no answer.
This can also be used if no external line is free:
5 Press.
Verification tone.
Note: The number for Automatic Callback may differ from
country to country, see table “Alternative programming for
Automatic Callback, Camp-on, Intrusion” on page 66.
d Replace the handset.
You are called back if the extension finishes the ongoing call or the
next time the extension finishes a new call. You have to answer
within eight seconds otherwise the Callback service is cancelled.
u Lift the handset when you are called back.
The requested extension is called automatically.