Specifications

Main Cabinet Wiring 3-29
Chapter 3 - Installation
Main
Main Main
Main Cabinet Wiring
Cabinet WiringCabinet Wiring
Cabinet Wiring
When using the Main Cabinet, complete the installation of each Module as in “Module
Installation” on page 3-11
with the exception of the telephony (Miscellaneous, PSTN, ISDN
and SLT) connections. With the Main Cabinet, these connections are made through
RJ-21X 25-pair connectors mounted on the backplane. The PSTN and ISDN interface
circuits are terminated in female RJ-21X connectors. The SLT and Miscellaneous interface
circuits are terminated in male RJ-21X connectors. This assures separation of the PSTN
MDF terminations from other telephony-like terminations.
Modules terminate the telephony interfaces at the appropriate type of connector through
the backplane, using connector pairs (circuit locations) based on the Module location in
the Cabinet. Modules such as LGCM4 and DIDM2 are terminated on the PSTN connectors.
The SLTM2 Module and the Miscellaneous connections of the MFIM are terminated on the
male RJ-21X connectors.
Complete all telephony wiring by making cross-connects between the RJ-21X and the
appropriate connection type, referring to the following:
 PSTN and ISDN Connections
Figure 3-23: Connection for BRIM2 in slots 1 thru 5
Figure 3-24: Connection for BRIM2 in slots 6 thru 9
Figure 3-26: Connection for LGCM4 & DIDM2
 SLT Connections - Figure 3-25: Connection for SLTM2
 Miscellaneous Connections - Figure 3-22: Connection for MFIM in slot 10
Complete all the telephony wiring for the Module prior to applying power to the Module.
Note also, to consider the slot and sequence assignments when installing Modules, refer
to
“Module Installation Sequence” on page 3-11.