Nortel Business Communications Manager BCM 400 4.0 Standard platform. The Business COmmunications Manager Release 4.0 brings the benefits introduced with the BCM50 to the BCM200/BCM400/BCM1000 platforms. These benefits include a new and improved operational paradigm, enhanced product security and Linux operating system. The BCM 4.0 release also builds upon previous releases to continue to deliver a global, industry leading enterprise solution for businesses of all types and sizes. These solution enhancements include improvements in IP telephony solutions and applications. This BCM chassis comes fully equipped with: Intel Celeron 1.2 GHz 256Mb of RAM 20 GB hard drive A 350- watt power supply 2 Media bays All housed in a 19-inch, rack-mountable chassis.