Business Communications Manager (BCM) Business Communications Manager (BCM) portfolio delivers small to medium-sized businesses and branch offices an award winning converged voice and data solution, providing a choice of IP-enabled or pure-IP strategy. Leveraging existing Meridian, Norstar, and Communication Server 1000 investments, Business Communications Manager offers the features businesses of all sizes require like telephony, unified messaging, multimedia call center, interactive voice response, IP routing and data services such as firewall, wireless, and more.