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MEDIA
BAY MODULE DESCRIPTIONS:
DTM
(DIGITAL TRUNK MODULE)
The Digital Trunk Media Bay Module connects to a digital T1/PRI
ISDN line using either a digital or PRI line. The DTM also
supports DASS2, DPN22, Q.SIG and MCDN over ISDN. The front of
the DTM Module has an RJ48C connector that connects the DTM to
the service provider connection point. There are also a set of
loopback connectors so that loopback tests can be performed. 
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CTM4
(4 Port CALLING LINE ID TRUNK MODULE)
The CTM4 connects 4 analog line interfaces to the Business
Communications Manager via 4- RJ11 connections on the front of
the module. There is also an auxiliary jack that connects to
line 1. This auxiliary line can be used for Fax, V.90 modem or
analog phone. It also serves as an emergency line in case of
power failure when using an analog phone. 
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CTM8
(8 Port CALLING LINE ID TRUNK MODULE)
The CTM8 connects 8 analog line interfaces to the Business
Communications Manager via 8- RJ11 connections on the front of
the module. There are also 2 auxiliary jacks that connect to
lines 1 and 5. These auxiliary lines can be used for Fax, V.90
modem or analog phones which also serve as emergency lines in
case of power failure when using an analog phone. 
(BACK TO TOP OF PAGE)   BRIM
S/T
(Basic Rate Interface Module)
The BRI media bay module connects a maximum of four BRI ISDN
lines to the Business Communications Manager. Each BRI ISDN line
you connect adds two telephone lines to the BCM. A maximum of
eight lines are available and are connected via the four RJ48C
jacks on the faceplate of the module. The LED’s beside each jack
are lit when the lines are active. The North American based
systems use a T-interface with an external NTI line while
European systems use an S type.
(BACK TO TOP OF PAGE)  DSM-16+
(16 Port Digital Station Module)
The DSM-16+ supports 16 digital telephones using one half of a
DS30 resource with the Full Double Density switch enabled. This
allows the use of another DSM-16+ if required, thus utilizing
only 1 full DS30 resource.
(BACK TO TOP OF PAGE)  DSM-32+
(32 Port Digital Station Module)
The DSM-32+ supports 32 digital telephones. With the Full Double
Density switch enabled, only 1 DS30 resource is used.
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CMB4X16
(4 Trunk X 16 Digital Station Module)
The CMB4X16 Module provides for 4 analog lines (trunks/CLID
capable) plus 16 digital station ports. There is an auxiliary
port beside Line 1 that can be shared for fax, modem or analog
telephone.
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ASM 8
(8 Port Analog Station Module)
The ASM 8 Media Bay Module provides connection for 8 analog
telecommunications devices such as; standard analog phones, fax,
modems, cordless phones and modems (28.8kbit/s).
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ASM 8+
(8 Port Analog Station Module)
The ASM 8+ Media Bay Module provides connections the same as the
ASM 8 with enhanced features such as: Message Waiting
Indication, Disconnect Indicator, Caller ID, Firmware Download
Capability and Enhanced Ringing. Off-Premise Extensions are also
supported.
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FEM 6
(Fiber Expansion Media Bay Module)
The FEM 6 connects a maximum of six Norstar expansion modules to
the BCM. These connections are made via the six fiber ports on
the front of the FEM module to the Norstar expansion modules. An
LED indicator illuminates when a connection is made at each
port. This provides a quick way to upgrade a Norstar system to a
Business Communications Manager.
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DDIM
(Digital Drop and Insert MUX)
The DDIM module enables the BCM to share its connection to a
universal T1 network with a Local Area Network (LAN) to provide
both voice and data channels. The DDIM splits the T1 channels to
use some for voice and others for data. Provides CSU/DSU
capability.
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GATM
(Global Analog Trunk Module)
The GATM is available in 4 port (GATM4) or 8 port
(GATM8) configurations. The GATM provides interface for four
or eight analog trunks and supports both pulse and tone dialing,
Caller ID and Disconnect Supervision. The GATM uses an amphenol
connector as the interface to the telco.
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