Telephone System Installation and Maintenance Guide

54 Chapter 2 Introducing the BCM50 hardware
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Telephones and adapters
The telephony components perform call processing and connect the telephones or peripheral
telephony equipment, such as fax machines, to the Public Switched Telephone Network (PSTN)
lines. They also process telephony information that has been received through an IP link.
Business telephones and adapters connect to the RJ-21 telephony connector on the main unit and
to the MBMs installed in the expansion units. The BCM50 system supports Business Series
Terminal sets, IP Telephony-based sets, and analog telephony devices. The IP Phones 2001, 2002,
2004, and the IP Softphone 2050 have separate installation and operations documentation. Refer to
the documentation main index.
Table 7 Media bay modules
Component description FRU Description Installation procedure
DTM MBM “Digital trunk media bay module” “To install a media bay module
(MBM)”
BRIM MBM “Basic rate interface media bay
module”
“To install a media bay module
(MBM)”
DSM16+ MBM “Digital station media bay module” “To install a media bay module
(MBM)”
DSM32+ MBM “Digital station media bay module” “To install a media bay module
(MBM)”
4x16 MBM “4x16 media bay module” “To install a media bay module
(MBM)”
ASM8 MBM “Analog station media bay modules” “To install a media bay module
(MBM)”
GASM MBM “Analog station media bay modules” “To install a media bay module
(MBM)”
GATM MBM “Global Analog Trunk Module” “To install a media bay module
(MBM)”