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Telephoning
Multiple Connections
Two calls can be made to your handset simultaneously. This means that you can tele-
phone with two parties, toggle between these connections or initiate a 3-party con-
ference. Any further callers will hear a busy signal.
If the system administrator has configured a call queue, further calls will enter this
queue (see also the section Calls in the Call-waiting Queue starting on page 34).
DTMF Postdial/VF Signalling
Depending on the system's configuration, your telephone is automatically set to VF
(voice frequency) signalling in the connection state. You can use this, for example, to
query an answering machine or a voice mailbox. Consult your system administrator if
you have questions concerning this function.
Call-charge Display
If your network operator transmits call charge information, and if you have dialled an
external number yourself, you will see the amount of the charge for this call during
the call or after you hang up.
Redialling
The last call numbers you dialled are stored in the redial list (with the most recent
entry at the top). If a call number is also stored in the OpenCom 100 / Aastra 800 tele-
phone book, you will see the name.
Telephone Lock
You can switch the telephone lock on or off using the Protection - Telephone lock
menu after entering your PIN. Switching on the telephone lock changes dialling
rights. You may no longer be able to make external calls or only make them to a
limited extent.
Blocked/Unblocked Call Numbers
Your telephone can be blocked from dialling all or selected external call numbers.
Emergency numbers (e. g. in Germany 110/112) can be entered in a special list, irre-
spective of your trunk line access rights, and thus always be dialled. Consult your
system administrator for details.
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