Telephony
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In addition, you can also configure call forwarding on busy (CFB) for hunt groups. This
call forwarding can be used for an internal or external destination call number. In
addition, you can enter a back-up destination for time-dependent hunt groups when
they cannot be reached. Using the Forward after time setting, you can instead con-
figure a call number and a specific time interval in the Telephony: Groups: Hunt
Groups menu.
External Call Forwarding
You can also forward calls to external destinations without restriction. However, the
call forwarding history cannot be continued with external destinations. When mul-
tiple users of a parallel hunt group configure call forwarding to external destinations,
a single call to the hunt group can also occupy multiple external lines.
Special rules apply for call numbers which are displayed upon an external call for-
warding destination:
• If the call is originally initiated by an internal user, the external call number of the
internal user is transmitted.
• If the call is originally initiated by an external user, this user's external call number
can be transmitted using the“CLIP no screening” feature. If “CLIP no screening” is
not available, the external call number of the last forwarding user is transmitted.
Information on the Update
It is possible to convert the configuration of an earlier firmware version to the current
version within the context of an update. This happens automatically when you load a
saved configuration after an update. Please note the following points:
• The previous behaviour is preserved with the conversion. When restoring a former
configuration, the Call forwarding one level only possible option is switched off
automatically on the Telephony: Settings page. Additionally, the Call forwarding
of members possible option is deactivated for all restored hunt groups.
• Restored call forwarding instances can behave differently as call forwarding chains
of earlier firmware versions (before the 9.0 release) are not supported. If necessary,
use the trace function for call forwarding (the Diagnosis: Log Trace menu, CF
tracking option in the Configurator).
• The call forwarding interval, previously only centrally definable, is adopted for all
users as the default value.