Mike's PBX Cookbook

Installing BCM Modules

A BCM200 accommodates a maximum of two media bay modules, the BCM400 and BCM450 accommodate a maximum of four MBMs.
If your BCM400/450 system requires more than four media bay modules, you will need to connect an expansion unit.

Warning Note: BCM50/450: Module DIPs are set to the default - ALL "ON"- position, and must
be assigned to a pseudeo slot number in Resources > Telephony Resources.

A module may only be inserted or removed, when the BCM is powered down! Module DIP switch settings must be followed.

Overview of installing a MBM:
  1. Set the module DIP switches
  2. Disconnect cables, disconnect power
  3. Remove bezel to eject blank filler
  4. Install new module, replace bezel
  5. Power up, reconnect cables
  6. Monitor LEDs for power and status
  7. Log into the UCM, and identify the new module
Overview of replacing a MBM:
  1. Disconnect cables, disconnect power
  2. Remove bezel, remove failed module
  3. Set new module DIPs to match the failed module
  4. Install new module, replace bezel
  5. Power up, reconnect cables
  6. Monitor LEDs for power and status
  7. Log into the UCM, and identify the new module

After setting the modules DIP switches, install it in the BCM or an expansion unit - all bay slots are the same.  If, after powering up the BCM, a module status LED continues to flash (don't be too hasty, it can take upto 15 mins for the initialization process to complete), you have either an addressing conflict (check DIP switches), or a faulty module. Remember, the BCM must be shut down before inserting or removing modules.

Example DIP Switch Settings

In a typical small installation, the following Module DIP switch settings are recommended:

Module DS30 Bus DIP Switch Settings To assign these DN's
1 2 3 4 5 6
Digital Station (DSM 16+) 2(A) off on on on on on 221 - 236
Digital Station (DSM 16+) 2(B) off on off on on on 237 - 252
Analog Station (ASM 8+) 3 off on on on on off 253 - 268
Trunk (GATM) 6 on on on off on on L91, 92, 93, 94

Note, the second station module (2B) may not be required or present.

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