Nortel Networks BCM200, 400 4.0 manual Installing an MBM

Chapter 8 Installing a media bay module (MBM) 135

Figure 73 BCM400 expansion gateway configuration

Example 3 System needs:

16 analog trunks

160 digital phones

10 IP Phones

48 digital trunks

Example 4 System needs:

192 digital phones

10 IP Phones

48 digital trunks

DSM32	DTM
DSM32	DTM
DSM32
DSM32
DSM32	BCM400 expansion gateway
CTM8
CTM8
BCM400 main unit
and expansion unit

DSM32	DTM
DSM32	DTM
DSM32	CTM4
DSM32
DSM32	BCM400 expansion gateway
DSM32

BCM400 main unit and expansion unit

Warning: Ensure you are properly grounded before handling modules or any components that are part of the BCM hardware.

Installing an MBM

After you set the switches on the MBMs, you can install them in the BCM main unit or the expansion unit.

The BCM200 main unit accommodates a maximum of two MBMs. The BCM400 main unit accommodates a maximum of four MBMs. If your BCM400 system requires more than four MBMs, you must connect an expansion unit to the BCM main unit.

Warning: Install DTMs in the BCM main unit only. DTMs do not function if installed in the BCM expansion unit.

If there are no empty MBM bays in the BCM main unit, move MBMs to the expansion unit to provide space for the DTMs.

Note: The number of MBMs you can add varies, depending on the DS30 resources that are available. Refer to Table 25.

BCM200/400 4.0 Installation and Maintenance Guide