Using the Aastra 673xi / 675xi23Further options:– Press the Backspace softkey to delete the selected entry.– Press the Tone -> on / Tone -> off softkey to switch on/off the acousticsignalling of incoming messages.VoiceboxThe OpenCom 1000 communications system provides you with a voicebox whichserves as an “answering machine” if desired. To operate the voicebox, it isrecommended to configure a key with the Voice mail function (see Function KeysReference starting on page 31). Activating or deactivating the voicebox is done viacall forwarding to a voicebox call number (please refer to Call Forwarding startingon page 21).Any time there are new messages on your OpenVoice voicebox, the Aastra 673xi /675xi display shows the symbol ‚ and the number of voicebox messages receivednext to it.1. Press the function key with the Voice mail function.The Voice -Mail menu card appears.2. If more than one call number was configured for the Aastra 673xi / 675xi selectthe line with the navigation keys . Confirm using the Select softkey.The voicebox is called.3. The next steps are voice controlled. Follow the Voice menu instructions.4. Press the Goodbye key to exit the voicebox system.Busy Lamp FieldUse the Busy Lamp Field function key (BLF, busy lamp) to view the free or busystate of another internal subscriber. For every desired call number of a subscriberyou have to configure a separate BLF function key (please refer to Function KeysReference starting on page 31). The LED indicator next to the function key showsthe state of the subscriber connected:■ Unlit ( ): The subscriber is free. Press the BLF function key to call thesubscriber.■ Blinking ( ): The subscriber is being called. Press the BLF function key toaccept the call (“Pickup”).■ Lit ( ): The subscriber is busy.