ADC FCS-717 4B, Technical Practice, Page: 11 / 40

SCP-FCS717-042-03H
FCS-717 List 4B January 6, 2003 1
P
RODUCT
O
VERVIEW
This section describes the ADC
®
PG-Flex
®
FCS-717 List 4B, 19-inch Central Office Terminal (COT) shelf
description, features, and specifications.
Description and Features
The FCS-717 List 4B COT shelf (see Figure 1 ) supports:
•
one alarm unit or Pair Gain Test Controller (PGTC) Interface unit common to all systems
•
up to three PG-Flex subscriber carrier systems where each system consists of one line unit and one to three
channel units (for a shelf maximum of three line units and 9 channel units)
Additionally, the shelf provides termination points for alarms, power, metallic bypass pairs, auxiliary power pairs
when using a doubler, and subscriber circuits (located on the backplane, see
Figure 2 on page 8 ). The
FCS-717 List 4B COT shelf provides three 25-pair male Amphenol connectors (P1, P2, and P3) for the subscriber
circuit connections.
Figure 1. FCS-717 List 4B COT Shelf (Card-side, Front View)
Features of the PG-Flex FCS-717 List 4B COT shelf are:
• universal mounting brackets for installation into a 19-, or 23-inch equipment bay
•
wire-wrap connections for High-bit-rate Digital Subscriber Line (HDSL), alarms, metallic bypass pairs, and
auxiliary power pairs (when using a doubler)
• split or single battery feed for shelf powering
•
screw terminal connections for frame ground and Central Office (CO) battery
• DB-25 connector for Network Management Access (NMA) communications
•
25-pair Amphenol connectors for subscriber circuit connections
Use the FCS-717 List 4B COT 19-inch shelf only with a List 4x (or higher) FRE-765
Remote Terminal (RT) enclosure.
Alarm Unit or
PGTC Interface Unit
System 1
CUs 1-3 LU1 LU2 LU3 LU4 CUs 1-3 CUs 1-3
System 2 System 3