Telephoning
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Forwarding Calls
Types of forwarding
You can forward internal or external calls intended for yourself to another internal call
number or, provided that you have the necessary user group authorisation, to another
external call number. Calls can be forwarded either immediately, after a specified
period of time (delay) or if the line is busy. You can configure more than one call for-
warding mode at the same time (Immediately, After delay or Busy). You can, for
example, configure call forwarding Immediately for external calls to one call number,
and call forwarding After delay for internal calls to a different call number. During
configuration, the system administrator defines an interval in seconds for After delay
call forwarding. You can replace this default with your own individual value when pro-
gramming After delay call forwarding. If more than one forwarding mode has been
activated, Immediately is given priority.
Call forwarding to a voicebox
If OpenVoice / Aastra Voice, the integrated voicemail system, is installed in the com-
munications system, you can also forward your calls to a voicebox configured for you.
Selective Call Forwarding
Further, the system administrator can programme call forwarding where the call
number of the caller is analysed (“SCF: Selective Call Forwarding”). Potentially this
could be the reason why specific calls do not reach you. If you have any questions
concerning this functionality, please consult your system administrator.
Least Cost Routing
Least Cost Routing (LCR) can be evaluated with call forwarding to external numbers,
provided your system administrator has configured LCR and its application in the
OpenCom 100 / Aastra 800 correspondingly. Ask your administrator for the configu-
ration applicable to you.
Hunt group call numbers
During system configuration, the system administrator can configure call forwarding
destinations for hunt group call numbers. These destinations are called when all users
of a hunt group are busy and/or when a call is not accepted by any member of the
hunt group within a certain time interval. You cannot view or change this call for-
warding on your device.
In addition, the system administrator can determine whether you can forward
incoming calls to the hunt group call number or not. If the system administrator does
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