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Practice 450-1011-201
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:
•
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
*
-type
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.
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.
