I have a customer that wants to have two or three different target lines ring on one DN and if no answer go to different mail boxes. For example target line xxx-xxx1 ring on DN 500 then FWD to mailbox 500 if no answer. Target line xxx-xxx2 also ring on DN 500 then FWD to mailbox 501 if no answer. 501 does not have a physical set (just a mailbox). Also if some one leaves a voicemail message in 501 mailbox can it light up the light on DN 500 to inform the user that someone left a voicemail message in mailbox 501. They have BCM 400 4.0 with 1140 sets. Not sure if it can be done or how. Thank you in advance.