Installing An Mbm - Nortel BCM200 Installation And Maintenance Manual

136 Chapter 8 Installing a media bay module (MBM)
Figure 74 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
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
N0060612 N0060612
DSM32
DSM32
DSM32
DSM32
DSM32
CTM8
CTM8
BCM400 main unit
and expansion unit
DSM32
DSM32
DSM32
DSM32
DSM32
DSM32
BCM400 main unit
and expansion unit
Table 25.
DTM
DTM
BCM400 expansion gateway
DTM
DTM
CTM4
BCM400 expansion gateway