Have a MICS w/NAM. Not using AA just mail.Each person has one 800 number that is forwarded to two numbers at their phone. When I call the 800 number and no answer it goes to his voice mail, I then dial the 800 again, (with the first number still in the mail) and I get the mail again. If I leave both of them off hook and dial again I get a busy, which I'm suppose to. The customer claims that incoming calls go to the general M/B (not all the time) I can not dup this but have heard messages for him and another person in the GMB. Any ideas