AASTRA 600d for Aastra 800 and OpenCom 100 User Guide EN - Manual (Page 58)

Basic Functions
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DTMF Postdial/VF Signalling
Depending on the system configuration, your telephone is automatically set to VF sig-
nalling during a call. Use VF signalling, e.g. to query a voice message or voicebox.
Please contact your system administrator if you have questions regarding this
function.
Charge Display (Charges)
If your network operator transmits charge information – even for external calls you
dial yourself – you will see the charge amount for the call during and after the call.
Note
If there are no charges for the call, no charges are displayed.
Transmission of Call Numbers
There are various ISDN services which either allow or prevent transmission of call
numbers between users.
“CLIP” feature
CLIP is an abbreviation which stands for “Calling Line Identification Presentation”. The
call number of the caller is displayed (if transmitted). If the call number has also been
entered into the directory of the Aastra 800 / OpenCom 100, the name is displayed.
“CLIP no screening” feature
“CLIP no screening” offers transmission of an arbitrary call number for outgoing con-
nections instead of transmitting the actual call number of the caller. This means that
instead of your call number being displayed, e.g. a service call number is displayed to
the user you called. The “CLIP no screening” feature must be ordered from the
network operator and authorised for use by the system administrator during system
configuration. When you receive an external call where the caller is displaying a dif-
ferent call number than the one actually technically being transmitted, a “?” appears
next to the call number on the display. If the call number indicated on the display is
saved to a phone book entry, the name is displayed as usual along with a question
mark.