I have Norstar MICS with 6.0 s/w and Octel vmail system (interfacing with VMI's). This is setup on PRI with DID's, so all incoming calls route to (2) DID/intercom keys on each independent phone. Setting forward-no answer to vmail extension works great for any call not answered, problem is with the busy. If program set to forward-busy to vmail, the 2nd DID/intercom key wont ring when 1st DID/intercom key is engaged with a call - forwards straight to vmail. When don't set call forward busy, then the incoming caller receives a busy when both DID/intercom keys are engaged. I want this to roll to voicemail when busy! Any ideas?