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| Call forwarding - no answer (CFNA)
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| If the call forwarding destination is unavailable and no other call forwarding operation is configured for the trunk, call forwarding-no answer is not carried out.
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| You can specify whether the system follows an external call forwarding procedure that a station has programmed in the call forwarding table.
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| If you activate external call forwarding-no answer for the entire trunk, the system circumvents internal call management (for more information, refer to the ISDN features CFB and CFNR).
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If a user has activated call waiting, the caller camps on even if the user did not configure busy call forwarding in the local call management table.
If call waiting is not possible for this user and the user has not configured busy call forwarding, the caller receives a busy signal.
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| Hunting to external call forwarding destination
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| The system-wide flag controls the call forwarding - no answer if an external CF has been activated within a call destination list.
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| If the flag is not set, the call forwarding - no answer ends at the external CF destination.
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| If the flag is set, the call forwarding - no answer continues out of the external CF destination to the station entered in the call destination list.
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| Note: For CF on loop start trunks, the flag functions only if you have entered a call cycle for the call forwarding - no answer.
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| Variable call forwarding definition from the telephone
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| Call forwarding can also be configured using the telephone user interface for the local extension. This is possible for all telephone models. External destinations and groups can also be entered.
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| Multiple call diversion keys for various external destinations
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| The telephone user interface allows several different call diversions to be saved to the keys of the DSS module. Several call diversion keys including destination call numbers can be programmed; the active call diversion is indicated by a lit LED.
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