Nortel Networks BCM200/400 - Manual (Page 142)

142 Chapter 8 Installing a media bay module (MBM)
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Figure 74 BCM400 expansion gateway configuration
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: Ensure you are properly grounded before handling modules or any
components that are part of the BCM hardware.
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 .
DSM32
DSM32
DSM32
DSM32
DTM
DTM
DSM32
CTM8
CTM8
Example 3
System needs:
16 analog trunks
160 digital phones
10 IP Phones
48 digital trunks
BCM400 main unit
and expansion unit
BCM400 expansion gateway
DSM32
DSM32
DSM32
DSM32
DTM
DTM
DSM32
DSM32
Example 4
System needs:
192 digital phones
10 IP Phones
48 digital trunks
BCM400 main unit
and expansion unit
BCM400 expansion gateway
CTM4