We Currently have BCM 50 3.0 (16 VM Seats) at customers remote location and MICS 5.0 at main location. Are looking to upgrade to BCM 400 or 450 at main location in order to unifify VM's as users don't like leaving group messages at both locations. I understand that by using MCDN should be able accomplish this but there are issues such as message waiting indicators at far location. Assume someone's done this. Can you provide feedback on your endeavor. I.E. Works Well. Doesn't work well. Complaints customers had. Things that work well.