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Installing ISDN BRI hardware
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
2. Label each end of the cable specifying the module number, the connector name (A,
3. Plug one end of a cable into the appropriate connector on the I/O panel at the rear
4. Properly identify cables on the MDF. For example, plug the cable into connector A
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
Figure 6: Connect the system to the MDF
the system and the MDF.
24
ISDN Basic Rate Interface Installation and Commissioning
MDF.
B, C), and the card type (SILC or UILC).
of the module. Plug the other end of the cable into the corresponding connector on
the MDF.
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.
NT8D37 IPE module (16-cable configuration)
NT8D37 IPE module SILC and UILC pair-terminations for connectors B, F, L, S (12-
cable configuration)
on page 32 beginning on
the MDF: NT8D37 IPE module (16-cable configuration)
Table 2: SILC port designations at the MDF:
on page 26 through
Table 2: SILC port designations at
on page 25 shows the cable connection between
Table 5:
on page 26.
March 2011
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