User guide

Telephoning
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End conference: You end the conference.
Toggle: You end the conference and can now toggle back and forth between the
participants.
Door opener:* You activate the door opener.
Special Calls/Conversations
Callback
If you call another subscriber of your OpenCom 100 / Aastra 800 communications
system and the line is busy, you can initiate automatic callback. Your user group
must have authorisation for this feature to be able to use it.
Initiate callback
Answering a callback
A callback is carried out when the other subscriber is free.
Accepting an Appointment Call
You can save two appointments on your mobile unit (please refer to page 77).
When the appointment time occurs, your mobile unit rings for a period of one
minute with volume increasing. The appointment number appears on the display.
An appointment can be repeated once or repeatedly.
Menu Press softkey briefly.
F Use the arrow keys to select the Callback menu entry.
OK Press softkey to confirm.
When your telephone rings,
A press call key.
The other subscriber is now called.