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PG-Plus 4 POTS Central Office Line Unit, PLL-720 List 1 PG-P
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4 POTS C
ENTRAL
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FFICE
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ECHNOLOGIES
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NC
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E
NGINEERING
S
ERVICES
T
ECHNICAL
P
RACTICE
™950-720-100-04|¨
S
ECTION
950-720-100-04
Model
List Number
Part Number
CLEI Code
PLL-720
1
150-1620-01
S9L1AA0AAA
LIST
PairGain
PLL 720
PG-PLUS
1
SYNC
MARGIN
BYPASS
FAULT
POTS1
POTS2
POTS3
POTS4
PWR 950-720-100-04, Revision 04
ii
February 26, 1999
PLL-720 List 1
Revision History of This Practice
©Copyright 1999 PairGain Technologies, Inc.
PairGain and PG-Plus are registered trademarks of PairGain Technologies, Inc.
Information contained in this document is company private to PairGain Technologies, Inc., and shall not be modified, used, copi ed,
reproduced or disclosed in whole or in part without the written consent of PairGain.
Other product names mentioned in this practice are used for identification purposes only and may be trademarks or registered
trademarks of their respective companies.
Revision
Release Date
Revisions Made
01
March 15, 1997
Initial release
02
August 29, 1997
Corrected screen captures and technical data
03
March 9, 1998
Added metallic fallback
04
February 26, 1999
Metric values and V2 compliancy for voltage safety added to specifications table 950-720-100-04, Revision 04
Using This Technical Practice
PLL-720 List 1
February 26, 1999
iii
U
SING
T
HIS
T
ECHNICAL
P
RACTICE
Two types of messages, identified by icons, appear in the text.
I
NSPECTING
Y
OUR
S
HIPMENT

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 Warranty. If you must store the equipment for a prolonged
period, store the equipment in its original container.
A
BBREVIATIONS
Notes indicate information about special circumstances.
Cautions indicate the possibility of equipment damage or the possibility of personal injury.
ACO
alarm cut-off
MJ
major
AWG
American wire gauge
MLT
mechanized loop test
BER
bit error ratio
MN
minor
CEV
controlled environmental vault
NA
not alarmed
CO
central office
NORLUSW
no RT software
COLU
PG-Plus Central Office Line Unit
NR
not reported
COTS
PG-Plus Central Office Terminal Shelf
NT1
network termination type-1
CPE
customer premises equipment
PAU
PG-Plus Alarm Unit
CR
critical
PFO
power feed open
DDS
digital data service
PFS
power feed short
ES
errored seconds count
PGF
power feed ground fault
FCC
Federal Communications Commission
PMX
PG-Plus Multiplexer Unit
HDSL
high bit-rate digital subscriber line
POTS
plain old telephone service
LCFO
loop current feed open
RLU
PG-Plus Remote Line Unit
LED
light emitting diode
RMA
return material authorization
LOSW
HDSL loss of SYNC word
RT
PG-Plus Remote Terminal
mA
milli-Amps
SDT
subscriber drop testing
mV
FF
milli-volts peak-to-peak
SES
severely errored seconds
MAR
HDSL line margin
SYNC
synchronization
MISPWRA
power A missing
UAS
unavailable seconds count
MISPWRB
power B missing 950-720-100-04, Revision 04
Table of Contents
PLL-720 List 1
February 26, 1999
iv
T
ABLE

OF
C
ONTENTS
Overview
____________________________________________________________________________ 1
Description and Features....................................................................................................................1
Metallic Fallback................................................................................................................................1
Specifications .....................................................................................................................................2
Power Consumption and Heat Dissipation ........................................................................................3
Maximum Heat Dissipation.................................................................................................3
Thermal Loading Limitations ..............................................................................................4
Maximum Power Consumption...........................................................................................4
Maximum Current Drain .....................................................................................................4
Monitoring, History and Diagnostics.................................................................................................4
Performance Parameters ......................................................................................................4
Alarm Names and Values ....................................................................................................5
History .................................................................................................................................5
LEDs Descriptions .............................................................................................................................5
Installation and Test
___________________________________________________________________ 7
Required Tools and Test Equipment..................................................................................................7
Installing the COLU...........................................................................................................................7
Initialization Sequence .......................................................................................................................8
Subscriber Drop Tests ........................................................................................................................8
Administration
_______________________________________________________________________ 8
Logging On ........................................................................................................................................9
Logging Off........................................................................................................................................9
PAU or PMU Main Submenu .......................................................................................................... 10
COLU Main Menu ........................................................................................................................... 11
Navigational Methods........................................................................................................12
Menu Bar Selections.......................................................................................................... 12
COLU Summary Screen .................................................................................................... 13
Performance Submenu ..................................................................................................................... 14
HDSL Summary Screen .................................................................................................... 15
HDSL 24-Hour History Screen .........................................................................................16
HDSL 7-day History Screen ..............................................................................................17
Alarms Submenu.............................................................................................................................. 18
HDSL History Screen ........................................................................................................19 Table of Contents
950-720-100-04, Revision 04
v
February 26, 1999
PLL-720 List 1
Configuration Submenu................................................................................................................... 20
System Options Screen ..................................................................................................... 21
System Alarm Types Screen ............................................................................................. 22
HDSL Alarm Thresholds Screen ...................................................................................... 23
HDSL Alarm Types Screen .............................................................................................. 24
Save Configuration Screen................................................................................................ 25
Set Factory Defaults Screen .............................................................................................. 26
Test Submenu .................................................................................................................................. 27
Information Submenu ...................................................................................................................... 28
Inventory Screen ............................................................................................................... 29
Help Screen ....................................................................................................................... 29
Fault Isolation
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