Bcm400 Expansion Gateway Mbms - Nortel BCM200 Installation And Maintenance Manual

Warning: Do not attempt to turn on ports requiring a DS30 bus that is already in service
to another media bay module located on the same BCM system. Doing this results in
unpredictable behavior with both modules.

BCM400 expansion gateway MBMs

MBMs are installed in the BCM400 expansion gateway in the same manner as in the BCM400
main unit. Refer to
using the expansion gateway.
The following rules apply when using a BCM400 expansion gateway:
• All stations must be on the host unit.
• Primary rate interface (PRI) PSTN trunking interfaces must be on the expansion gateway.
If analog modems are deployed as part of the overall customer configuration and intended to share
PSTN network access with the normal voice trunks, then an exception to the above rules is
required. In this case, analog stations (for example, ASM8+, GASM8, or even ATAs connected to
a DSM16/32) must be configured in the expansion gateway to support the modem connections
only. Fax machines or other analog telephones must be connected to MBMs on the host system.
Figure 73 BCM400 expansion gateway configuration
Example 1
System needs:
16 analog trunks
32 analog phones
128 digital phones
10 IP Phones
Example 2
System needs:
32 analog phones
160 digital phones
10 IP Phones
Figure 73 on page 135
ASM8
ASM8
ASM8
BCM400 main unit
and expansion unit
DSM32
ASM8
ASM8
BCM400 main unit
and expansion unit
Chapter 8 Installing a media bay module (MBM)
and Figure 74 on page 136
DSM32
DSM32
DSM32
DSM32
ASM8
CTM8
CTM8
DSM32
DSM32
DSM32
DSM32
ASM8
ASM8
BCM200/400 4.0 Installation and Maintenance Guide
for sample MBM layouts
DTM
DTM
BCM400 expansion gateway
DTM
DTM
BCM400 expansion gateway
135