Nortel NT7B10AAEH BCM 200 3.7 Base System 2 LAN Standard (Refurbished)Nortel BCM 3. 7 is available on the Business Communications Manger 200 platform, which provides two bays for Media Bay Modules. The Nortel BCM 200 has a lower removable tray, similar to that in the BCM 400, for improved serviceability of the platform in a lower cost version. The 200 cannot be expanded using an Expansion Cabinet. The lower cost Nortel BCM 200 version meets the needs of price sensitive smaller sites. For customers with 10 to 24 users