Nortel Networks 400 4.0 Determining MBM DIP switch settings, To determine MBM DIP switch settings

116Chapter 8 Installing a media bay module (MBM)

Determining MBM DIP switch settings

Assign DIP switch settings before you install an MBM. The DIP switches are located on the back or underside of the MBM.

Note: Fiber expansion module (FEM) switches

The switches on the fiber expansion module (FEM) do not work in the same way as those of the trunk or station MBMs. On the FEM, the switches turn the fiber ports on and off. For information about setting the switches on an FEM, refer to “FEM switch settings” on page 133.

To determine MBM DIP switch settings

1Use Table 28 (trunk MBMs) and Table 29 (station MBMs) to determine a switch setting for all MBMs except the FEM. Figure 69 on page 117 shows an example of the table and how to do the following steps.

2On Table 28 or Table 29 circle the MBM names.

3Number the order in which you want to assign the MBMs.

4Determine the number of DS30s each MBM requires. For some station MBMs this depends on whether you choose to set the MBM to single or double density.

5Circle the DS30 bus and offset numbers.

6Follow the DS30 bus and offset numbers to the far right column where the switch settings are indicated. Circle the setting for each MBM.

Note: If you must assign specific line or extension numbers to an MBM, refer to the individual switch tables in “Assigning line and extension numbers” on page 121 for line and DN listings.

N0060612