Chapter 8 Installing a media bay module (MBM) 105BCM200/400 4.0 Installation and Maintenance GuideChapter 8Installing a media bay module (MBM)Use the procedures in this chapter to select and install the media bay modules (MBM) in BCMmain unit and the expansion unit.This chapter contains the following information:• “Selecting MBMs for your BCM system” on page 105• “Determining system capacity” on page 109• “Assigning DS30 resources” on page 114• “Determining MBM DIP switch settings” on page 116• “Setting MBM DIP switches” on page 121• “Assigning line and extension numbers” on page 122• “Installing an MBM” on page 136Selecting MBMs for your BCM systemMBMs are plug-in devices that connect your extensions and the public switched telephonenetwork (PSTN) lines to the call processing capabilities of the BCM system.When you order your BCM system, there are no MBMs installed. You can select the number andtype of MBMs that best suit your business requirements.There are three types of MBMs:• Trunk media bay module (see “Selecting trunk MBMs” on page 106)• Station media bay module (see “Selecting station MBMs” on page 108)• Specialized media bay module (see “Selecting a fiber expansion module (FEM)” on page 109)For further information on the role and function of each type of MBM, refer to “Media baymodules (MBMs)” on page 51.If you have a large BCM system, there are some configuration restrictions that can apply to yoursystem. For information about these restrictions, refer to “Assigning DS30 resources” on page114.See Figure 64 for an overview of the process for determining the MBMs for your system.
