If Call Forwarding Unconditional is active, a corresponding message appears on the user interface. All calls are forwarded according to the configured default forwarding.
Calls are forwarded to your standard Voice Box or to the given number, depending on your configuration.
If Call Forwarding Unconditional is not activated, you can also delay the forwarding of calls (6.2 Delayed Call Forwarding) or, if you are already telephoning, you can forward calls individually (6.3 Call Forwarding Busy).