Connect the modules to the MDF
Modules connect to the MDF using NE-A25B cables with 50-pin D-type male connectors on
each end. One end of the cable plugs into the Input/Output (I/O) panel at the rear of the module,
and the other end plugs into the MDF.
Connect the modules to the MDF
1. Determine the number of NE-A25B cables needed to connect one module to the
MDF.
2. Label each end of the cable specifying the module number, the connector name (A,
B, C), and the card type (SILC or UILC).
3. Plug one end of a cable into the appropriate connector on the I/O panel at the rear
of the module. Plug the other end of the cable into the corresponding connector on
the MDF.
4. Properly identify cables on the MDF. For example, plug the cable into connector A
on the I/O panel and into the connector labeled A on the MDF, if an SILC or UILC
is installed in slot 0 of an IPE module.
5. Repeat steps 2 through 4 for all cables in that module.
6. Repeat steps 1 through 5 for all modules containing SILCs and/or UILCs.
7. Lay all the cables neatly and fasten them with cable ties.
8. Label the MDF, as necessary, using
Table 2: SILC port designations at the MDF:
NT8D37 IPE module (16-cable configuration) on page 26 through Table 5:
NT8D37 IPE module SILC and UILC pair-terminations for connectors B, F, L, S (12-
cable configuration) on page 32 beginning on Table 2: SILC port designations at
the MDF: NT8D37 IPE module (16-cable configuration) on page 26.
Figure 6: Connect the system to the MDF on page 25 shows the cable connection between
the system and the MDF.
Installing ISDN BRI hardware
24 ISDN Basic Rate Interface Installation and Commissioning March 2011
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