ADC PG-PLUS Instructions for use

TELEPHONE
NETWORK
INTERFACE
CUSTOMER
ACCESS
PG-PLUS
TECHNICAL PRACTICE
REMOTE LINE UNIT
SECTION SCP-PRL771-012-05H
Model List CLEI Code
PRL-771 1B S9MSBB0A~~

SCP-PRL771-012-05H
PG-Plus PRL-771 January 6, 2003
Revision History of This Practice
©Copyright 2003 ADC DSL Systems, Inc. All Rights Reserved.
ADC is a registered trademark of ADC Telecommunications, Inc. PG-FlexPlus is a registered trademark of ADC DSL Systems, Inc.
No right, license, or interest to such trademarks is granted hereunder, and you agree that you shall assert no such right, license, or
interest with respect to such trademarks. 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 to ADC DSL Systems, Inc., and shall not be modified, used, copied,
reproduced or disclosed in whole or in part without the written consent of ADC.
Contents herein are current as of the date of publication. ADC reserves the right to change specifications at any time without notice.
Information furnished by ADC is believed to be accurate and reliable. In no event shall ADC be liable for any damages resulting
from the loss of data, loss of use, or loss of profits and ADC further disclaims any and all liability for indirect, incidental, special,
consequential or other similar damages. This disclaimer of liability applies to all products, publications and services during and
after the warranty period.
Revision Release Date Revisions Made
01 October 1, 1997 Release to change:
1Corrected Figures.
2Changed FCC Class.
02 December 31, 2001 Release to rebrand document to comply with ADC standards
03 January 6, 2003 Updated Product Support Information

Using This Practice SCP-PRL771-012-05H
January 6, 2003 PG-Plus PRL-771
USING THIS PRACTICE
Three types of messages, identified by icons, appear in the text.
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 ADC.
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 ADC as described in “Returns” on page 15. 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.
Electrostatic Discharge (ESD) susceptibility symbols indicate that a device or assembly is
susceptible to damage from electrostatic discharge.You must wear an antistatic wrist strap
connected to the appropriate ground connection prior to performing installation procedures.
You must also observe normal ESD precautions when handling electronic equipment. Do not
hold electronic plugs by their edges. Do not touch components or circuitry.

SCP-PRL771-012-05H
PG-Plus PRL-771 January 6, 2003 i
TABLE OF CONTENTS
PRL-771 Overview ____________________________________________________________________ 1
Description and Features .....................................................................................................1
Metallic Fallback .................................................................................................................1
Specifications.......................................................................................................................2
Required Tools and Test Equipment ...................................................................................3
Installing the RLU ...............................................................................................................3
Safety Precautions .................................................................................................3
Reference Label.....................................................................................................6
Install the RT Enclosure........................................................................................7
Wiring....................................................................................................................7
Attach the Frame-Ground Wire .................................................................8
Attach the POTS Drops ...........................................................................11
Close the Housing..............................................................................................................14
Fault Isolation ....................................................................................................................14
Product Support _____________________________________________________________________ 15
Technical Support ............................................................................................................................15
Limited Warranty.............................................................................................................................15
Returns .............................................................................................................................................15
FCC Class B Compliance ................................................................................................................17
Modifications ...................................................................................................................................17
Acronyms .........................................................................................................................................18

SCP-PRL771-012-05H
ii January 6, 2003 PG-Plus PRL-771

SCP-PRL771-012-05H
PG-Plus PRL-771 January 6, 2003 iii
LIST OF FIGURES
1. Typical PG-Plus System..................................................................................................................................1
2. Securing the Customer Access Door..............................................................................................................4
3. Securing a Line Module ..................................................................................................................................5
4. Reference Label...............................................................................................................................................6
5. Installing the RT Enclosure .............................................................................................................................7
6. Opening the Telco Access Door......................................................................................................................8
7. Attaching the Frame-Ground Wire..................................................................................................................9
8. Attaching the HDSL Tip and Ring Wires .....................................................................................................10
9. Inserting the POTS Wires..............................................................................................................................11
10. Attaching the POTS Wire Pair ......................................................................................................................12
11. Unplugging the RJ-11 Jack ...........................................................................................................................13
12. Status Window..............................................................................................................................................14

SCP-PRL771-012-05H
iv January 6, 2003 PG-Plus PRL-771

SCP-PRL771-012-05H PRL-771 Overview
PG-Plus PRL-771 January 6, 2003 1
PRL-771 OVERVIEW
This practice describes the ADC PG-Plus PRL-771 List 1B, a Remote Terminal (RT) enclosure that houses one
Remote Line Unit (RLU) and provides interfaces for up to six Plain Old Telephone Service (POTS) subscribers.
DESCRIPTION AND FEATURES
A ADC PG-Plus system provides bidirectional transport of multiple DS0s over a single, unconditioned wire pair using
High-bit-rate Digital Subscriber Line (HDSL) technology. Using existing cable, PG-Plus provides for higher
bandwidth needs of residential and business customers by providing multiple POTS interfaces on a single HDSL
twisted-pair wire. Figure 1 shows a minimally configured ADC PG-Plus system that consists of:
• One Central Office Terminal (COTS) shelf
• One Central Office Line Unit (COLU)
• One RLU housed in an RT
Figure 1. Typical PG-Plus System
Each COLU housed in a COT shelf interfaces with a corresponding RT. POTS or digital lines from a Central Office
(CO) switching system connect to the COTS and are sent by means of the COLU and the HDSL wire pair to an RT.
As an example, a 23-inch COTS can interface with sixteen different PRL-771 RTs providing six POTS lines each, for
a total of 96 subscriber lines. The COTS operates on standard -48 V dc CO battery and supplies power to the RT,
eliminating the need and expense of providing local power. A PG-Plus system with HDSL transmission and line
powered RTs therefore results in fast, cost-effective solutions to POTS deployment over minimal copper facilities.
METALLIC FALLBACK
Metallic fallback provides a direct connection from the CO to one subscriber under fault conditions. Service is
provided to the subscriber assigned to the POTS line in the affected COLU. At the RLU, the system exits metallic
fallback and attempts to synchronize if either POTSor the HDSL Tip to Ring pair is shorted for at least three seconds,
and then released for at least three seconds. Otherwise, the COLU checks for the presence of an RLU every five
minutes. If an RLU is present, the system begins HDSL synchronization acquisition.
Relays in the COLU and RLU under control of the PG-Plus PAU provide a path for Subscriber Drop Testing (SDT)
and metallic fallback operation. These relays are used to establish a circuit to POTS # 1 during fault conditions and
to provide for drop testing of the selected subscriber line from the CO location.

PRL-771 Overview SCP-PRL771-012-05H
2 January 6, 2003 PG-Plus PRL-771
SPECIFICATIONS
Power
HDSL Line Operating Input Voltage +135 V dc (Tip to Ring, minimum)
HDSL Line Start-up Voltage 200 V dc (Tip to Ring, minimum)
PRL-771 Input Power 12.5 Watts (Tip to Ring, maximum)
HDSL
Line Code 2B1Q
Line Rate 196 K symbols/sec (392 K b/sec); 261.3 Kb/sec
Reach 12.5 kft, 26 gauge; 18.0 kft, 24 gauge; 25.2 kft, 22 gauge
Environment
Temperature -40°F to +149°F; -40°C to + 65°C
Humidity 5% to 95% (non-condensing)
Altitude -200 ft. MSL to 13,000 ft. MSL; -60 m MSL to 4,000 m MSL
Vibration NEBS
Electrostatic Discharge Per GR-1089-CORE
Power and Lightning Per GR-1089-CORE
Human Safety Per UL 1459
Emissions Radiation and Immunity Per FCC Part 15 for Class A digital devices
POTS Interface
Analog Impedance 600 Ω
PRL supervisory range 100 Ω plus 430 Ω for handset
Detection of Loop Open >10 kΩ
Idle State Voltage -48 V minimum
Loop Current 23 mA minimum
Ring Generation Balanced, Trapezoidal 40 Vrms minimum @ 20 + 3 Hz in up to 5 REN
per line (10 REN total at PRL)
Ring Trip Removed in 200 ms after Loop Closure
Connectors
HDSL 3-terminal station protector, 3/8-inch hex nut
POTS Screw Terminals on RJ-11 line interface
Dimensions
Height 10.25 in. (26.0 cm.)
Width 8.5 in. (21.6 cm.)
Depth 4.75 in. (12.1 cm.)
Weight 4 lbs. (1.81 kg.)

SCP-PRL771-012-05H PRL-771 Overview
PG-Plus PRL-771 January 6, 2003 3
INSTALLATION AND TEST
REQUIRED TOOLS AND TEST EQUIPMENT
The tools and test equipment required for the RLU are:
• One Telephone test set
• One 1/4-inch flat-head screwdriver
• One #1 Phillips screwdriver
• One insulated-handle 3/8-inch nut driver
• One 5/32-inch hex key, drilled for tamper-proof fasteners
• One insulated-handle wire stripper
• One insulated-handle needlenose pliers
• One insulated-handle wire cutter
INSTALLING THE RLU
Safety Precautions
To ensure the safety of personnel and equipment, carefully observe the following safety rules.
Be careful when installing or modifying telephone lines. Dangerous voltages can be present. It is unsafe to
install telephone wiring during a lightning storm.
Always disconnect all telephone lines and power connections before servicing or disassembling this
equipment.
For performance and safety reasons, use only power supplies listed with telephone equipment by a locally
recognized organization.
All wiring external to the product should follow the local wiring codes.
Always treat the HDSL pair as if it were live with high voltage present. Use caution when installing an HDSL
pair that is already connected to a COLU, because dangerous voltages are present on the HDSL pair. The
COLU, unless previously disabled by means of craft provisioning, periodically attempts to power up the
RLU by applying +100 V dc with respect to ground to the HDSL pair. The COLU also initiates a start-up
after a momentary short has been applied to the HDSL pair. The COLU responds with start-up voltage
three seconds after removal of the short.

PRL-771 Overview SCP-PRL771-012-05H
4 January 6, 2003 PG-Plus PRL-771
Security
You have full access to the interior of the RT and to each Line Module by loosening the Telco override screw from
the Customer Access door, or by loosening the tamper-proof screw from the Telco Access door (see Figure 2). The
tamper-proof screw can be either of the following:
• #8 pan-head pin and socket type, which requires a 5/32-inch drilled hex key. The #8 pan-head pin and socket
type screw is preferred for improved security.
• 3/8-inch hex-head screw, which requires a 3/8-inch nut driver (216 tool or can wrench).
In either case, to gain access to the interior of the RT and to each Line Module, use a 5/32-inch drilled hex key to
loosen and then remove the Telco override screw from the Customer Access or Telco Access door.
Figure 2. Securing the Customer Access Door
Subscribers can place a padlock through the customer-padlock hole drilled into the Customer Access door hasp to
secure the Customer Access door.
TELEPHONE
NETWORK
INTERFACE
CUSTOMER
ACCESS
Customer Access latch
Telco override screw
Customer Access screw
Customer-padlock hole

SCP-PRL771-012-05H PRL-771 Overview
PG-Plus PRL-771 January 6, 2003 5
For installations where more than one subscriber is serviced out of a single RT unit, you should plug the
customer-padlock hole in the Customer Access door hasp with a 3/8-inch diameter hole plug. When more than one
subscriber is serviced out of a single RT, the subscriber can protect his line against unauthorized use by placing a
padlock through the latch on the appropriate Line Module door (Figure 3).
Figure 3. Securing a Line Module

PRL-771 Overview SCP-PRL771-012-05H
6 January 6, 2003 PG-Plus PRL-771
Reference Label
During installation, refer to the RLU reference label (see Figure 4) affixed inside the Customer Access door. The
middle section of the RLU reference label identifies the Frame Ground and HDSL Tip and Ring wires as well as the
wire color code for the six POTS lines.
Figure 4. Reference Label
PG-Plus
OPERATION.
INTERFERENCE THAT MAY CAUSE UNDESIRED
ANY INTERFERENCE RECEIVED, INCLUDING
FERENCE, AND (2) THIS DEVICE MUST ACCEPT
DEVICE MAY NOT CAUSE HARMFUL INTER-
FOLLOWING TWO CONDITIONS: (1) THIS
FCC RULES. OPERATION IS SUBJECT TO THE
THIS DEVICE COMPLIES WITH PART 15 OF THE
CONNECT FRAME GROUND TO EARTH GROUND, PFAILURE TO DO SO MAY RESULT IN DAMAGE TO PTHE UNIT AND RISK OF ELECTRICAL SHOCK.
RISK OF ELECTRICAL SHOCK, VOLTAGES PUP TO 280 VDC MAY BE PRESENT PON TELECOMMUNICATIONS CIRCUITS.
POTS-3 (LINE 3)
POTS-2 (LINE 2)
POTS-1 (LINE 1)
INPUT: 260VDC 0.1AMP
NID
32FF
LISTED
WARNING
CAUTION
FGND
HDSL
WHT/GRN
WHT/ORG
WHT/BLU
GREEN
BLK/YEL
6 POTS REMOTE TERMINAL
POTS-6 (LINE 6)
POTS-5 (LINE 5)
POTS-4 (LINE 4)
%%uCONNECTION TIP / RING
PRL-771 LIST
RED/BLU
WHT/GRY
WHT/BRN
NO POWER
RT FAULT
POWER NORMAL/HDSL SYNC
POWER NORMAL/NO SYNC
SUBSCRIBER DROP TEST
RINGING
CHANNEL(S) ACTIVE
ALL CHANNEL S IDLE
NORMAL
OFF:
FLASH:
ON:
OFF:
FLASH:
FLASH:
OFF:
ON:
ON:
ACTIVITY
POWER
STATUS
R
UL
CUS
PRL-771 wire referenc
e

SCP-PRL771-012-05H PRL-771 Overview
PG-Plus PRL-771 January 6, 2003 7
Install the RT Enclosure
Use the two #10 x 1.5-inch wood screws and flat washers provided in the Mounting Kit to attach the RT enclosure to
the side of the customer residence (see Figure 5). For installation on stucco or other suitable surface, use the two ADC
provided #10 x 1-inch anchor nuts.
Figure 5. Installing the RT Enclosure
Wiring
A wiring harness, consisting of a cable for the three POTS and one ISDN pairs, a cable for the HDSL pair, and a frame
ground wire, is held with a strain relief as it exits the inner metal case. The wiring harness is factory wired to the
primary protection devices for the ISDN and HDSL pairs and to the frame ground bus. An additional frame ground
is attached to the metal case. The Line Modules on the ISDN and POTS lines provide an RJ-11 test jack for isolating
trouble to the network or subscriber. Each ISDN and POTS line is protected by a gas tube over-voltage protection
device under the Telco cover.
HDSL and subscriber wiring are threaded through rubber grommets at the bottom of the enclosure. The HDSL pair
from the COTS is terminated on an over-voltage-protected threaded binding post at the bottom of the enclosure and
connected to the HDSL pair in the wiring harness. Subscriber line connections are made through the right-hand side
of the Line Modules. An RJ-11 jack allows the subscriber line to be disconnected from the network, or allows for an
ISDN test set to be plugged in as an aide to diagnostic tests.
Install the RT enclosure only as shown in Figure 4, with all access openings facing down. Otherwise,
possibly damaging materials (such as fluids) can enter the RT enclosure.
TELEPHONE
NETWORK
INTERFACE
CUSTOMER
ACCESS
Customer Access door
M
oun
ti
ng
h
o
l
e
Mounting hole

PRL-771 Overview SCP-PRL771-012-05H
8 January 6, 2003 PG-Plus PRL-771
Attach the Frame-Ground Wire
To attach the ground wire:
1Use a 5/32-inch tamper-proof hex key to loosen the tamper-proof screw on the Telco Access door, then open
the Telco Access door (Figure 6)
Figure 6. Opening the Telco Access Door
2Use a #1 Phillipshead screwdriver to punch a small hole in the bottom of the rubber grommet on the
left-hand bottom side of the RT enclosure (see Figure 7).
3Insert the frame-ground wire into the RT enclosure through the hole made in step 1. A 10 AWG copper
frame ground wire is recommended.
4Loosen and remove from the ground-binding post the top nut and three flat washers.
Cutting the grommet with a utility knife or something similar is not recommended, because this may
cause a large opening in the grommet, allowing insects or other contaminants to enter the enclosure.

SCP-PRL771-012-05H PRL-771 Overview
PG-Plus PRL-771 January 6, 2003 9
5Loop the frame-ground wire around the ground-binding post.
6Replace in reverse order and tighten the hardware removed in step 4.
Figure 7. Attaching the Frame-Ground Wire

PRL-771 Overview SCP-PRL771-012-05H
10 January 6, 2003 PG-Plus PRL-771
Attach the HDSL Tip and Ring Wires
To attach the Tip and Ring wires:
1Use a #1 Phillipshead screwdriver to punch a second small hole in the bottom of the rubber grommet on the
left-hand bottom side of the RT enclosure (see Figure 8).
Figure 8. Attaching the HDSL Tip and Ring Wires
2Insert the service cable containing the HDSL Tip and Ring wires into the hole made in step 1.
3Loosen only the top nut on the Tip and Ring gas tube protection binding posts (see Figure 8).
Always treat the HDSL pair as if it were live with high voltage present. Review the safety precautions at
the beginning of this section before proceeding.
Cutting the grommet with a utility knife or something similar is not recommended, because this may
cause a large opening in the grommet, allowing insects or other contaminants to enter the enclosure.
If this unit is to be pole mounted, ADC recommends that the subscriber drop wires be connected directly
to the appropriate gas tube protection binding posts.

SCP-PRL771-012-05H PRL-771 Overview
PG-Plus PRL-771 January 6, 2003 11
4Remove the service cable outer jacket from the cable inside the RT enclosure.
5Strip the insulation from the end of the HDSLRing wire using an insulated handle wire stripper.
6Carefully insert and loop in a clockwise direction the HDSL Ring wire between the top two washers on the
HDSL binding post. To avoid electrical shock, handle the stripped HDSL wire by it’s insulation with
insulated-handle needlenose pliers.
7Tighten the HDSL binding post nut with an insulated-handle nut driver.
8Trim any excess uninsulated wire with an insulated-handle wire cutter.
9Repeat steps 6, 7, and 8for connecting the HDSL Tip wire to its gas tube protection binding post.
Attach the POTS Drops
To attach the POTS drops:
1Use a #1 Phillips screwdriver to punch a second small hole in the bottom of the rubber grommet on the
right-hand bottom side of the RT enclosure (see Figure 9).
2Lift the appropriate Line Module door (see Figure 9)
Figure 9. Inserting the POTS Wires
Cutting the grommet with a utility knife or something similar is not recommended, because this may cause
a large opening in the grommet that would allow insects or other contaminants to enter the enclosure.

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12 January 6, 2003 PG-Plus PRL-771
3Insert the POTS wire pair through the cutout on the right side of the Line Module (Figure 10).
4Connect the Tip conductor to the green terminal lug on the Line Module.
5Connect the Ring conductor to the red terminal lug on the Line Module
Figure 10. Attaching the POTS Wire Pair