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7. Installing the Cross-connect Panel
It is assumed that the cross-connect panel and all building wiring and
cross-connections have been installed prior to the installation of the system. If this
has not been done, or if you are adding a panel or changing wiring, read this part
carefully and follow the instructions.
About the Cross-connect Panel
The office cross-connect panel is the central distribution point for system cabling.
(See Fig. 7-1.) With the exception of DS1 interfacing, all cabling connections to
external equipment are made to the cross-connect panel (or other cross-connect
system). The panel thereby minimizes the wiring running in and out of the system
cabinets and provides easy access for testing.
Before Making Cross-connections
The office cross-connect panel includes three main sections as follows:
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•
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The building wiring is terminated at telephone jacks (typically RJ11C or RJ14C
jacks that serve Meridian M4000 terminals, LAN Interface Units, and personal
computers with PC LANlink cards.
*
BIX is a trademark of Northern Telecom.
The top row provides eight 50-pin connectors for connectorized cables from
LANlink SRUs. These connectors are labeled LANLINK 1 to 4 for use with
LANlink SRUs; ROW A, B and C for connection to the three rows of line cards
in an Analog Link SRU; and TRUNKS for a cable to the central office or host
PBX. All eight connectors can be used interchangeably; the labeling is for
convenience only.
The nine rows of connectors in the middle portion of the panel are BIX
connectors. These provide the actual cross-connections between the 50-pin
connectors and the building wiring. BIX connectors provide a standard means
of terminating cables. They handle 22-, 24-, and 26-gauge solid copper wire;
three-pair 24-gauge wiring is recommended.
At the bottom of the panel is a row of 12 Teladapt jacks for direct connections
from stations. One end of the Teladapt cable is plugged into a jack on the panel.
The other end is plugged into an M4000 terminal, LIU, or personal computer.
This row is removable.
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Practice 450-1011-201
1
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