4-Port Met Line Board Concentrator Cable; Adjunct Power Units; Individual Power Supplies - AT&T 75 Wiring Manual

110-TYPE HARDWARE
Figure 3-14. 16-Port Analog Line Board Adapter Cable (853B Adapter)

4-PORT MET LINE BOARD CONCENTRATOR CABLE

The MET line circuit pack (TN735) has an output of four 3-pair circuits that appear on a 25-
pair connector at the switch. The WP-90929, List 3 Cable Assembly (Comcode 405 075 482)
described previously and shown in Figure 3-13 combines the MET line circuits that appear
on two 25-pair connectors onto one 25-pair connector that connects to the cross-connect field.
There are two types of power supplies used for adjunct powering—individual and bulk. The
power supplies are specified by the Field Services Organization (FSO) for firm quote price
lists. For all other quotes, the power supplies are specified by the Premises Services
Consultant (PSC).

Individual Power Supplies

Individual power supplies (Figure 3-15) can be used for powering from the equipment room,
site or satellite locations, or information outlets. An individual power supply can power only
one voice terminal. Table 3-D contains the individual power supply limitations for distance,
wire gauge, and adjuncts.
When a number of individual power supplies are used at the equipment room or at a site or
satellite location, an ac power strip (Figure 3-16) is installed to accommodate the various
sized power supplies. The outlets on the ac power strip must be spaced 3.5 inches (8.89 cm)
to 4 inches (10.16 cm) apart with the plug inserts perpendicular to the strip.
3-28
NOTE: AN A25D CABLE MUST BE USED BETWEEN
THE ADAPTER CABLE AND THE 110-TYPE
TERMINAL BLOCK.

ADJUNCT POWER UNITS