CopperOptics PairGain PG-Flex Plus PCS-818 User manual

PG-FLEX PLUS
CENTRAL OFFICE TERMINAL SHELF
PAIRGAIN TECHNOLOGIES, INC.
ENGINEERING SERVICES TECHNICAL PRACTICE
SECTION 950-818-100-01
Model List Number Part Number
PCS-818 1 150-2618-01

950-818-100-01, Revision 01
ii November 30, 1999 PCS-818 List 1
Revision History of This Practice
©Copyright 1999 PairGain Technologies, Inc.
PairGain and PG-FlexPlus are registed trademarks of PairGain Technologies, Inc. All other product names mentioned in this
document are used for identification purposes only and may be trademarks or registered trademarks of their respective companies.
Information contained in this document is company private toPairGain Technologies,Inc., and shall not be modified, used, copied,
reproduced or disclosed in whole or in part without the written consent of PairGain.
Information furnished by PairGain Technologies is believed to be accurate and reliable. However, no responsibility is assumed by
PairGain Technologies for its use, nor for any infringement of patents or other rights of third parties which may result from its use.
No license is granted by implication or otherwise under any patent or patent rights of PairGain Technologies. PairGain
Technologies reserves the right to change specifications at any time without notice.
Revision Release Date Revisions Made
01 November 30, 1999 Initial release.

950-818-100-01, Revision 01 Using This Technical Practice
PCS-818 List 1 November 30, 1999 iii
USING THIS TECHNICAL PRACTICE
Three types of messages, identified by icons, appear in the text.
Abbreviations used in this practice are defined in “Abbreviations” on page 20.
INSPECTING YOUR SHIPMENT
Upon receipt of the equipment:
•Unpack each container and visually inspect the contents for signs of damage. If the equipment has been
damaged in transit, immediately report the extent of damage to the transportation company and to PairGain.
Order replacement equipment, if necessary.
•Check the packing list to ensure complete and accurate shipment of each listed item. If the shipment is short
or irregular, contact PairGain as described in the “Limited Warranty”on page 21. If you must store the
equipment for a prolonged period, store the equipment in its original container.
Notes indicate information about special circumstances.
Cautions indicate the possibility of equipment damage or the possibility of personal injury.
You must wear an antistatic wrist strap connected to the ESD jack on the PG-FlexPlus chassis to
perform the installation procedures. You must also observe normal ESD precautions when
handling electronic equipment. Do not hold electronic plugs by their edge. Do not touch
components or circuitry.

Table of Contents 950-818-100-01, Revision 01
iv November 30, 1999 PCS-818 List 1
TABLE OF CONTENTS
Overview ____________________________________________________________________________ 1
Description and Features................................................................................................................... 1
Operation........................................................................................................................................... 2
Data Channel Overview...................................................................................................... 2
Serial Communications Bus................................................................................................ 3
Communication Requests ................................................................................................... 3
Backplane Connections....................................................................................................... 3
Power .................................................................................................................................. 4
COLU HDSL ...................................................................................................................... 4
Subscriber Pairs................................................................................................................... 4
Alarm Cutoff....................................................................................................................... 4
Alarm Contacts ................................................................................................................... 4
LAN Interface..................................................................................................................... 6
E1 Connections ................................................................................................................... 7
Specifications .................................................................................................................................... 7
Installation Procedures_________________________________________________________________ 8
Required Tools and Test Equipment................................................................................................. 8
Power................................................................................................................................................. 8
Mounting ........................................................................................................................................... 8
Wiring Access ................................................................................................................................... 9
Alarm Leads ...................................................................................................................................... 9
HDSL Lines....................................................................................................................................... 9
Subscriber Lines................................................................................................................................ 9
Connections....................................................................................................................................... 9
Ground Connections ........................................................................................................... 9
FGND Lug Connection ........................................................................................ 9
TB1 FGND Connection...................................................................................... 10
Power Connections ........................................................................................................... 10
Redundant-COT Shelf Powering........................................................................ 11
Single-Source Powering ..................................................................................... 12
Audible and Visual Alarm Connections ........................................................................... 13
Subscriber Connections From CO .................................................................................... 13
External Clock Connections.............................................................................................. 13
HDSL Wiring.................................................................................................................... 15
External ACO Connection ................................................................................................ 15
Turn-Up and Test ............................................................................................................................ 15

950-818-100-01, Revision 01 Table of Contents
PCS-818 List 1 November 30, 1999 v
Reference Tables..............................................................................................................................16
Abbreviations _______________________________________________________________________ 20
Product Support _____________________________________________________________________ 21
Technical Support............................................................................................................................21
Limited Warranty.............................................................................................................................21
Advance Replacement......................................................................................................................22
Billing...............................................................................................................................................22
Returning A Product ........................................................................................................................22
FCC Compliance..............................................................................................................................23
Modifications...................................................................................................................................23

Table of Contents 950-818-100-01, Revision 01
vi November 30, 1999 PCS-818 List 1

950-818-100-01, Revision 01 Overview
PCS-818 List 1 November 30, 1999 1
OVERVIEW
The PairGain®PG-FlexPlus TM 19-inch Central Office Terminal (COT) shelf, PCS-818 List 1, supports a common
management and alarm unit, an E1 multiplexer unit, and up to sixteen Central Office Line Units (COLUs).
DESCRIPTION AND FEATURES
The PCS-818 provides convenient mounting of a COT shelf PG-Plus Alarm Unit (PAU) or PG-Plus Alarm
Management Unit (PMU) and Central Office Line Units (COLUs); and furnishes termination points for subscriber
circuits, alarm, power, and E1 interfaces. All circuit boards are installed from the front of the COT shelf.
Interconnections for PG-Plus units are located on the backplane at the rear of the COT shelf. The PCS-818 COT
shelf accommodates the following PG-Plus units (see Figure 1):
•16 COLUs
•One Multiplexer Unit (PMX)
•One PAU or one PG-Plus Management Unit.
Figure 1. Front View of the PCS-818 List 1 COT Shelf
The COT shelf features:
•Wire-wrap connections for HDSL, alarm cutoff, and alarm relays
•Screw terminal connections for frame ground and Central Office (CO) battery
•DB-9 connector for network management communications
•64-pin Telco connectors for CO lines
•Fits into a Electronic Industries Association (EIA) 19-inch and European Telecommunications Standards
Institute (ETSI) frames
•Wire-wrap connections for G.703 data and reference clock interfaces
•Ethernet 10Base-2 and 10Base-T connections for network management or multi-shelf communications.
PAU/PMU
slot (J1) PMX slot (J2) Central office line units
(J3-J18)

Overview 950-818-100-01, Revision 01
2 November 30, 1999 PCS-818 List 1
OPERATION
Data Channel Overview
The COT shelf backplane uses redundant Pulse Code Modulation (PCM) transmit and receive buses and Serial
Communications buses (SCB) for data transfer and intra-COT shelf communications. Individual clock, data, and
synchronization buses originate from the PMX card and terminate at each COLU position. The COT shelf
provides the signal connectivity and –48 Vdc power distribution in the COT shelf. Figure 2 shows the backplane
signal interconnection.
Figure 2. Backplane Signal Configuration
PAU or PMU
COLU #1 COLU #16
RBUS1A
RBUS16A
TBUS16A
TBUS1A
G.703-1
G.703-8
MUX (PMX)
EXT
CLK
1
INTA
INT1
u
u
u
INT16
17
HDSL
8
HDSL
8
RS232
OS
G.703 LAN
10baseT
Subscriber
Pair
121-128
Subscriber
Pair
1-8
16 16
82
2
Alarm
Contacts
21
TBUSEOCA
RBUSEOCA
ACO
2
SCB1
SCB16
INTERNAL BUS TO
COLU SLOTS 2 TO 4
INTERNAL BUS TO COLU
SLOTS 13 TO 15
2
LAN
10base2
OSOS
SCBA
REF CLK

950-818-100-01, Revision 01 Overview
PCS-818 List 1 November 30, 1999 3
Serial Communications Bus
The SCB provides the means for the PAU/PMU to communicate with all other boards in the COT shelf to allow:
•Software downloads
•Generation of status, alarm, and performance reports through the PG-FlexPlus Console menus
•Provisioning of each unit installed in the COT shelf through the PG-FlexPlus Console menus
Communication Requests
The COT shelf provides a path for communication requests from each of the cards to the PAU/PMU slot. These
signals are used by the COLU and PMX units to initiate communication with the PAU/PMU.
Backplane Connections
Each COT shelf supports the connection of up to sixteen COLUs, one PMX unit and one PAU/PMU. The
backplane of the PCS-818 COT shelf contains the connectors shown in Figure 3 and Table 1.
Figure 3. PCS-818 COT Shelf Backplane

Overview 950-818-100-01, Revision 01
4 November 30, 1999 PCS-818 List 1
The following sections identify each connector by type and function.
Power
The COT shelf backplane has a five-position power-terminal strip (TB1) that provides connections for redundant
-48 Vdc, common battery return, and frame ground to each of the card slots by way of screw terminals. The COT
shelf can be wired for redundant powering or single-source powering depending upon requirements.
COLU HDSL
Each COLU slot is equipped with eight wire-wrap pins for xDSL interfaces.
Subscriber Pairs
A total of 128 two-wire subscriber pairs terminate at the Telco connectors P1, P2, P3, and P4, on the COT shelf
backplane. Eight pairs route to each of the sixteen COLUs. At present up to six pairs are supported by existing
COLU’s. The additional two pairs are for future COLU configurations. See Tables 5 through 8 for P1, P2, P3, and
P4 connector pinouts.
Alarm Cutoff
The COT shelf backplane provides a wire-wrap pin for connection to an external alarm cutoff circuit.
Alarm Contacts
The COT shelf provides access to the PAU alarm relays through the wire-wrap pins on the COT shelf backplane.
Both normally open (NO) and normally closed (NC) relay operation is supported. Figure 4 shows the
configuration of the alarm relays.
Table 1. Backplane Connectors
Connector Description
J20 DB-9 RS-232 connector
J21 LAN 10base2 connector
J22 LAN 10baseT connector
P1 - P4 64-pin Telco connectors
TB1 Five-position power-terminal strip
FGND Frame ground lug
Use the frame ground lug located on the upper left corner of the COT shelf backplane, with
2.6 mm wire to ground the COT shelf. This is the preferred frame ground connection point.