Power; Hdsl; Two-Wire Subscriber Circuits; Four-Wire Subscriber Circuits - ADC PG-PLUS PCS-718 Technical Practice

SCP-PCS718-010-06H
The following sections identify each connector by type and function.

Power

The COT shelf backplane has a seven-position power terminal strip (TB1) that provides connections for dual
–48 Vdc, common battery return, and frame ground by way of screw terminals. The COT shelf can be wired for
redundant powering, split-powering, or single-source powering depending upon requirements.

HDSL

Each COLU slot is equipped with four wire-wrap pins for xDSL interfaces.

Two-Wire Subscriber Circuits

A total of 72 two-wire subscriber pairs terminate at the Telco connectors (P1, P2,and P3) on the COT shelf
backplane. Six pairs route to each of the twelve COLU slots. See Tables 24 through 26 for the connector pinouts.

Four-Wire Subscriber Circuits

The COT shelf provides a total of twelve four-wire data interfaces that are separate from the two-wire pairs. One
four-wire connection is provided for each of the twelve COLU slots. See
pinouts.

COLU Edge Card Connectors

Tables 2 through 13 show the backplane connector pinouts for each COLU slot.
PCS-718 List 1
Table 1. PCS-718 Backplane Connectors
Connector Description
J1 PAU or PMU connector
J2 PMX 1 connector
J3 PMX 2 connector
J4 - J15 COLU HDSL connectors.
The wire-wrap posts are for the HDSL.
J20 DB-25 (RS-232) connector
J21 10Base2 LAN connector
J22 Frame Ground
P1 - P3 Telco connectors
P5 Telco connector
TB1 Seven-position power terminal strip
January 6, 2003
Backplane Connections
Table 27 on page 39 for the connector
3