Installing Coupled Bonded Conductor Grounding - AT&T 75 Wiring Manual

The following procedure covers only the cables that connect from the switch cabinet through
the cable access panel and sneak fuse panel to the network interface (RJ21X or RJ2GX). It
does not cover the connections for trunk circuits provided for off-premises lines. The WP-
90929, List 2, cable assembly connects these trunk circuits from the CABINET CABLES
connectors on the right side of the cable access panel to the cross-connect field.
Connections for off-premises lines to the cross-connect field and other optional auxiliary
c o n n e c t i o n s u s i n g c o n n e c t o r s o n t h e c a b l e a c c e s s p a n e l a r e c o v e r e d u n d e r
MISCELLANEOUS WIRING INSTALLATION (see Note).
Note: Connector is used to connect power failure transfer terminals and to provide
external power to two attendant consoles. Connector 1 on the initial cable access panel
is always used to connect the control carrier leads as previously described.
To install the cables, proceed as follows:
1. Connect B25A cables between the network interfaces and the sneak fuse panels.
2.
Connect A25D cables between the sneak fuse panels and the DISTRIBUTION
CABLES connectors on the left side of the cable access panels(s).
3. Connect the single-fingered end of the concentrator cables to the CABINET
CABLES connectors of the right side of the cable access panels.
4. Connect the 3-fingered and 2-fingered ends of the concentrator cables to the
appropriate carrier slots. Equipped carrier slots are identified on the Customer
Service Order. It is helpful to mark the nomenclature strips above the carriers at
rear of cabinet to identify the equipped slots.
5. Label connectors on both ends of the cables that connect to the switch cabinet.
6. Dress cables down sides of cabinet and store excess cable slack in the cable slack
manager as described previously.
7. Install labels on cable access panel (see Labeling the Cable Access Panel).

Installing Coupled Bonded Conductor Grounding

A coupled bonding conductor must be tie-wrapped to all trunk cables. The coupled bonding
conductor connects to the cabinet single-point ground block and runs all the way to the
approved ground located nearest the telephone company owned protector block at the
building entrance facility (see Figure 2-52).
Note: Approved ground is defined in the AT&T System 75—System Description (555-
200-200) or AT&T System 75 XE—System Description (555-200-200).
Z100-TYPE HARDWARE
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