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Trunk Media Bay Modules connect telecommunications trunks to the BCM system. The following types of trunk Media Bay Modules are available.

Digital Trunsk Media Bay Module (BCM-DTM)

The BCM-DTM is a trunk module that connects a T-1 or PRI trunk to the BCM system adding up to 24 digital telephone lines. On international BCM systems, the BCM-DTM connects to an E1 or PRI digital line. With an E1 or PRI line, up to 30 digital telephone lines can be added. A maximum of three BCM-DTM modules can be installed on the BCM system. The Digital Trunk Module is supported in the BCM main cabinet only (the DTM is not supported in the expansion chassis). (R2 MFC E-1 is not supported at this time, but is planned for release in 2005 (CALA).)

The front faceplate of the BCM-DTM has a number of LEDs that indicate power status and any ongoing tests and alarms that the module is undergoing. The faceplate also has an RJ-48C connector that connects the BCM-DTM to the service provider’s connection point and a set of loopback connectors used to run loopback tests.

Figure 11.

Digital Drop and Insert Mux (DDIM) Module

with both voice and data from a service provider and splits off the channels carrying data and routes them to an interface on the front of the module.

Figure 12.

The front faceplate of the DDIM module has LEDs that indicate power, status and ongoing test and alarms similar to the Digital Trunk Module. It also has LEDs that indicate the status of the serial data interface, including

Transmit, Receive, RTS, CTS, DCD, DSR and TM. Figure 13.

The DDIM is supported in the main BCM200/400 cabinet only (the DDIM is not supported in the Expansion chassis) and supports standard T-1 only (not PRI). The interface is a V.35 in the form of a miniature DB-26 connector. A variety of cables are available that connect to either the BCM WAN card to take advantage of the BCM internal router, or to external Nortel routers and other third party routers. The DDIM cables include:

• DB-26 interface to connect to BCM WAN

• DB-44 interface to connect to Nortel routers

• DB-60 interface to connect to third party routers

• Standard V.35 with M34F interface.

In addition to providing a network service revenue opportunity, the DDIM streamlines implementation costs, as it is easier to install and configure than a separate, external Drop and Insert CSU/DSU. The DDIM also streamlines ongoing management costs as it is managed through the same Unified Manager as BCM.

Global Analog Trunk Media Bay Module 4 (BCM-CTM 4)

The BCM-GATM 4 port connects up to four analog CLID PSTN lines to the BCM system. The auxiliary port permits the connection of a 33.6+ Kbps modem, fax machine or single line analog telephone to line 1. When the auxiliary device is using line 1, the BCM system does not allow other telephones to use line 1. When a single line analog telephone is connected to the auxiliary port, it can be used as an emergency telephone. A male Amphenol connector on the faceplate attaches to the cross-connect array .

The BCM-CTM faceplate also has two LEDs:

• Power (indicates operating status)

• Status (indicates hardware status). Figure 14.

Global Analog Trunk Media Bay Module 8 (BCM-CTM 8)

The BCM-GATM 8 connects up to eight analog CLID PSTN lines to the BCM system. One auxiliary port permit the connection of a 33.6+ Kbps modem, fax machine or single line analog telephone to line 1. When the auxiliary device is using line 1, the BCM system does not allow other telephones to use line 1 or 5. When a single-line analog telephone is connected to the auxiliary port, it can be used as an emergency telephone. A male Amphenol connector on the faceplate attaches to the cross-connect array.

The BCM-CTM faceplate also has two LEDs:

• Power (indicates operating status)

• Status (indicates hardware status). Figure 15.

Basic Rate Interface Media Bay Module (BCM-BRIM S/T)

The BCM-BRIM S/T pluggable module connects up to four BRI S/T ISDN lines to the BCM system. Each BRI S/T ISDN line that is connected adds two telephone lines to the BCM system. Therefore, each BCM-BRIM S/T adds up to eight telephone lines to the system. BRI is often delivered as a U interface by telcos in North America. An external NTI can be used to convert the U interface to an S/T interface that is compatible with the BRIM S/T.

The front faceplate of the BCM-BRIM S/T has four RJ-48C connectors that connect the BCM-BRIM S/T to the service provider’s connection point. On the left side of the RJ-48 connectors are LEDs that show the status of the ISDN lines.

Each BCM-BRIM S/T also has two LEDs on the faceplate labeled as follows:

• Power (indicates working status)

• Status (indicates hardware status). Figure 16.

Fiber Expansion Media Bay Module (BCM-FEM)

Fiber Expansion Media Bay Modules connect Norstar Fiber Station and Trunk modules to the BCM200/400 system. One Fiber Expansion Module is available for the BCM system. The BCM-FEM connects up to six Norstar Fiber Station or Trunk modules to the BCM system.

Normally, Norstar expansion modules are used to connect PSTN lines and telephones to a Norstar system. With the BCM-FEM, these expansion modules can be connected to the BCM system. The BCM-FEM is very useful when a customer is migrating from an existing Norstar system to BCM.

In new installations, where Direct Inward Dialing (DID), or tie-lines, cannot be provisioned over a T-1 or PRI, the BCM-FEM can be used to support Norstar Analog DID or Analog E&M trunk cartridges to satisfy this

requirement.

The front faceplate of the BCM-FEM has six connectors that connect the BCM-FEM to the expansion modules. The connections are made using fiber cables. On the right side of each connector, there is an LED that indicates if the fiber port is enabled. If the LED is on, the fiber port is enabled and it can be used to connect a Fiber Station or Trunk module.

The BCM-FEM has two LEDs on the faceplate labeled as follows:

• Power (indicates working status)

• Status (indicates hardware status). Figure 17.

4x16 Combo Media Bay Module

The 4x16 combines a CTM with four analog trunks and a DSM 16 into a single module. Combining the CTM and the DSM 16, a single module provides analog trunk access and digital station interfaces. The 4x16 module provides increased flexibility for the small site, enabling small line and station configurations to be supported without the expansion chassis.

an analog telephony device, like a modem, a fax machine or an analog telephone, to share this trunk. The operation of this auxiliary port is identical to the auxiliary port in the CTM4 and CTM8.

The DSM16 portion of the 4x16 module de-multiplexes a DS-30 channel into 16 digital phone interfaces. Each digital phone interface supports two bidirectional channels.

The 4x16 module uses one and one-quarter DS30 channels in the DS256 serial bus.

The CTM portion of the 4x16 module requires one quarter of a DS30 channel and its DS30 channel number is selected by the DS30 channel number dip-switches. The DSM 16 portion of the 4x16 module requires an entire DS30 channel. It will use the next adjacent DS30 channel number to which the DS30 dip-switches are set. The 4x16 is available in North America only.

Figure 18.

The 4x16 Module combines the functionality of:

• 4 port Calling Line ID Trunk Module (CTM4)

Business Communications Manager Expansion Cabinet