Nortel Networks 400 4.0 User Manual

Chapter 8 Installing a media bay module (MBM)

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Before you install the MBMs into the BCM system, you must set the DIP switches. Make a note of 
these settings either on the chart shown in 

 or in the Programming Record form.

Locate the DIP switches on the MBM. See 

.

Figure 70   MBM DIP switches

Set the switches to correspond with the settings you chose in the procedure 

Repeat step 2 for each MBM you want to install.

Note: The GASM and GATM MBMs have a different DIP switch configuration 
than shown in 

6 5 4 3 2 1

Off

On

Underside of the 
MBM

DIP switches

Back of the MBM

1 2 3 4 5 6

On

Off

Rear view of the MBM

MBM is 
right-side up