ADTRAN 1000 Installation and Maintenance

Brand: ADTRAN

Model: 1000

Type: Installation and Maintenance

The ADTRAN 1000 is a high-performance subscriber loop carrier system, designed to deliver voice services with up to 24 POTS channels from a 4-wire HDSL span. It supports both integrated and universal configurations, providing flexibility in deployment. The device features a compact and versatile platform with pole or wallmount options, making it suitable for various installation scenarios.

61179001L1-5C Section 61179001L1-5, Issue 3 1

Section 61179001L1-5C

Issue 3, April 2003

CLEI Code: VAM2KL0F_ _

ADTRAN Total Access

1000 RT

Installation and Maintenance

Trademarks: Any brand names and product names included in this document are

trademarks, registered trademarks, or trade names of their respective holders.

CONTENTS

1. GENERAL ................................................................... 1

2. INSTALLATION/OPERATION................................. 5

3. PROVISIONING ......................................................... 8

4. TESTING ...................................................................12

5. HDSL DEPLOYMENT GUIDELINES ....................13

6. HLIU TROUBLESHOOTING PROCEDURES ....... 14

7. SPECIFICATIONS .................................................... 14

8. ORDERING GUIDE..................................................15

9. MAINTENANCE ...................................................... 15

10. WARRANTY AND CUSTOMER SERVICE ..........15

Appendix A. HDSL Loopbacks .................................... A-1

FIGURES

Figure 1. Total Access 1000 RT Enclosure ................... 1

Figure 2. Total Access 1000 Inside Layout ................... 2

Figure 3. Universal Configuration ................................. 3

Figure 4. Integrated Configuration ................................. 3

Figure 5. Total Access 1000 Component Layout and

Cable Connections .......................................... 7

Figure 6. Total Access 1000 RT Tree .......................... 10

Figure 7. Circuit Path ................................................... 11

Figure 8. HDSL Loopback ........................................... 12

Figure 9. CSA Deployment Guidelines ........................13

TABLES

Table 1. Compliance Codes .......................................... 5

Table 2. Total Access 1000 Time Slot Assignments .... 6

Table 3. Front Panel Indicators (BCU) ......................... 8

Table 4. Front Panel Indicators (HLIU) ........................ 8

Table 5. Face Plate Indicators (POTS) ......................... 8

Table 6. HDSL Loss Values........................................13

Table 7. Loop Insertion Loss Data ..............................14

Table 8. HLIU Troubleshooting Guide ....................... 14

Table 9. Specifications ................................................14

Table 10. Ordering Guide ............................................. 15

Table A-1. HDSL Loopback Control Codes ................ A-1

Table A-2. In-Band Addressable Loopback Codes ..... A-2

Figure 1. Total Access 1000 RT Enclosure

1. GENERAL

This practice provides installation and maintenance

procedures for the ADTRAN Total Access 1000 RT

subscriber loop carrier. Figure 1 is an illustration of

the Total Access 1000 RT enclosure.

Revision History

This is the third release of this document. Future

revisions will be explained in this subsection.

Features

The Total Access 1000 RT platform features include

the following:

• Pole or Wallmount

• HDSL span powered at +/-135 VDC

• Three common units:

- Power Supply/Ring Generator (PSU/RGU)

- Bank Controller Unit (BCU)

- HDSL Line Interface Unit (HLIU)

• Quad POTS channel unit

• Supports 56k modem (V.90) in integrated

configuration

• Supports TR-08 interface

• Supports local and remote provisioning

• Total Access 1500 used for COT universal

configuration

• Supports Mechanized Line Test (MLT)

• GR-487 Compliance for Remote Enclosures

• Meets NEBS Level 3 requirements

2 Section 61179001L1-5, Issue 3 61179001L1-5C

Description

The Total Access 1000 RT is a high performance

Subscriber Loop Carrier system for deploying voice

services. A small and versatile platform, the Total

Access 1000 RT system uses span powering to deliver

24 POTS services from a 4-wire HDSL span. This

design provides carriers the flexibility needed to meet

customer service commitments.

Physical Description

The Total Access 1000 RT enclosure is 12.7 inches

wide by 14.7 inches high by 5.5 inches deep and is

made of heavy gauge metal. The enclosure can be wall

or pole mounted. Figure 2 shows the inside layout of

the Total Access 1000 RT. Individual access modules

insert from the front. All of the facilities terminate

within the enclosure. Surge protection is also

provided within the enclosure.

The HLIU card provides the network interface for the

Total Access 1000 RT system. The HLIU terminates

the HDSL signals and passes span powering to the

PSU/RG. The HDSL signal is converted to a DSX-1

level signal and passed to the BCU.

The PSU/RG terminates the span power from the

network and provides regulated operating voltages to

all components within the Total Access 1000 RT

system. The PSU/RG also provides a 20Hz ring

signal which is distributed to the Quad POTS access

modules.

The BCU terminates the DSX-1 signal from the

HLIU. It also terminates the DS0 level signals to the

POTS cards. The BCU provides the access point for

provisioning, testing, and monitoring system

performance.

The Quad POTS access module provides the DS0

level interface to the BCU. It also provides four

2-wire subscriber loop interfaces for voice services. A

fully loaded system uses six Quad POTS cards for 24

voice services.

The Total Access 1000 RT system receives span

powering from the network using a Total Access 1000

integrated COT. The ICOT terminates a DSX-1

interface from the COT or switch. It converts the

DSX-1 signal to 4-wire HDSL and adds span

powering.

The Total Access 1000 RT system can be deployed in

an integrated configuration (Figure 3) or a universal

configuration (Figure 4). When used in the integrated

configuration, a switch provides a DSX-1 to the

ICOT, the ICOT converts the DSX-1 to HDSL and

adds span powering. The Total Access 1000 RT

terminates the HDSL and span powering, converts the

HDSL to DSX-1, and provides up to 24 subscriber

interfaces.

In the universal configuration, the Total Access 1000

RT interoperates with the Total Access 1500 COT.

The Total Access 1500 COT provides the twenty-four

2-wire interfaces to the switch and, in turn, provides

the DSX-1 interface to the ICOT.

Figure 2. Total Access 1000 Inside Layout

Architecture

The Total Access 1000 RT system is comprised of an

outside plant (OSP) housing, HDSL Line Interface

Unit (HLIU), Power Supply Unit/Ring Generator

(PSU/RGU), Bank Controller Unit (BCU), and POTS

or ISDN access modules.

The OSP housing contains all external terminations

including the HDSL interface, auxiliary powering

interface, bypass pair termination, subscriber loop

termination, and grounding terminations. The OSP

housing also provides surge protection for the network

and subscriber interfaces. The network and subscriber

interface terminations are insulation displacement

type.

61179001L1-5C Section 61179001L1-5, Issue 3 3

Figure 3. Integrated Configuration

Testing

The Total Access 1000 RT system has full MLT test

capabilities. When in universal configuration, the

COT (Total Access 1500, SLC96, etc.) can be

connected to a Pair Gain Test Controller (PGTC) for

metallic testing of all subscriber loops. When in

integrated configuration, a bypass pair from the Test

Bus Control Unit (TBCU) can be connected to the

Total Access 1000 RT. Again, any subscriber loop

can be placed on the bypass pair.

Additionally, the craft interface provides test access to

the subscriber loops. The system can generate

on-hook and off-hook states. As well as, generate

1000 Hz tone.

Environmental Requirements

Operating Temperature: –40°C to +65°C

Storage Temperature: –40°C to +85°C

Relative Humidity: 95%, noncondensing

Span Power

The Total Access 1000 RT is completely powered

from the HDSL span. An ADTRAN Total Access

1000 ICOT (E220, 3192, or Total Access 3000 form

factors) powers the Total Access 1000 RT system.

The span length can be extended by allocating two

additional pairs to power a mid-span repeater. This

increases the deployment range from 9-12 kft to 18-24

kft. See HDSL Deployment Guidelines section.

WARNING

Risk of electric shock. Voltages up to 135 VDC

may be present on telecommunications circuit.

The incoming HDSL span is terminated on P2 and P3

(see Figure 5). This termination provides surge

protection and protection from corrosion. P4 and P5

are auxiliary powering pairs for use in extended range

situations (future).

Span powering meets all requirements of Class A2

voltages as specified by Bellcore GR-1089-CORE.

Common Modules

PSU

General Description

The Total Access 1000 RT PSU is a common module

plug-in unit designed for use in the ADTRAN Total

Access 1000 RT. The front panel contains LEDs for

Figure 4. Universal Configuration

4 Section 61179001L1-5, Issue 3 61179001L1-5C

Power and Ring Generation states. The PSU also

contains a switch for disabling the ring generator. All

power, ground, and timing signals are prewired thus

eliminating additional wiring requirements.

The PSU does not require provisioning to operate in

the system.

Features

The Total Access 1000 RT PSU/RGU, P/N

1179007L1, includes the following features:

• Receives unregulated power input from HDSL

I/F

• Distributes all required regulated power

• Generates 20 Hz ring voltage

• Loss of power alarm

• Loss of ring voltage alarm

• Ring generator failure alarm

• Provision-free POTS turnup

• FCC and UL 1950 compliant

• Meets NEBS Level 3 requirements

Functional Description

The Total Access 1000 RT PSU operates on ±70

VDC to ±135 VDC received from the span-powered

HDSL pairs.

The PSU converts the incoming span power to

regulated voltages for distribution to other modules in

the system.

A ring generator within the PSU generates a 95 Vrms,

20 Hz ring voltage for distribution to the channel

bank’s POTS cards. Ring voltage is disabled by

pressing the RING DISABLE pushbutton. When ring

voltage is disabled, the RING LED is OFF.

HLIU

General Description

The ADTRAN Total Access 1000 RT HLIU,

P/N 1179009L1, is a network terminating common

plug-in unit used to terminate the HDSL circuit over

4-wire metallic facilities. The HLIU terminates the

HDSL signals originating from the ICOT and hands

off a DSX-1 to the BCU.

The HDSL local loop operates as two independent

subsystems each operating over a single twisted pair.

The HLIU communicates over these two twisted pairs

to the Total Access 1000 ICOT located at the CO.

BCU

General Description

The Total Access 1000 RT Bank Controller Unit

(BCU) is a common module plug-in unit. The unit

inserts directly into the BCU slot on the Total Access

1000 RT shelf. The unit terminates the DSX-1 from

the HLIU and provides 24 DS0s to the access module

slots. The BCU, with a built-in CSU, provides all

control functions for the Total Access 1000 RT

common units and access modules. The front panel

has one DB-9 connection, a network status LED, a

TEST status LED, and an LED/ACO pushbutton

switch.

Features

The Total Access 1000 RT BCU, P/N 1179012L1,

includes the following features:

• Controls all common equipment and access

modules

• Built-in Channel Service Unit (CSU)

• Provides VT100 craft interface via front panel

DB-9 connector

• LED network status indication

• T1 performance monitoring

• Supports TR-08 signaling

• UL 1950 compliant

• Meets NEBS Level 3 requirements

Functional Description

The Total Access 1000 RT BCU provisions, operates,

monitors, and tests all Total Access 1000 RT access

modules. The BCU allocates T1 bandwidth between

the various access modules.

The BCU multiplexes 24 DS0s from all RT access

modules within the RT enclosure. The BCU can

provision, test, and provide status for any card in the

channel bank.

Access Modules

POTS

General Description

The Quad POTS access module is used in the Total

Access 1000 RT platform to provide analog voice

service. The Quad POTS access module originates

four 2-wire analog voice interfaces over the subscriber

loop. The Quad POTS access module terminates to

the customer’s equipment on the far end of the

subscriber loop.

The unit is multifunctional and can be provisioned to

operate in any one of the following modes:

61179001L1-5C Section 61179001L1-5, Issue 3 5

• Plain Old Telephone Service (POTS)

• Dial Pulse Originate (DPO)

• Tandem Mode

• Private Line Automatic Ringdown (PLAR)

The features of the Total Access 1000 RT Quad

POTS, P/N 1179408L1, include:

• Four individual analog voice interfaces

• Automatic short loop provisioning feature

• µ-law encoding and decoding

• Supports ground start, loop start, and TR-08

signaling

• Long loop capability 1650 ohms (nominal)

including telephone set (16 kfeet @ 24 AWG)

• Hot Swappable

• V.90 Modem compliant

• Supports CLASS

features such as Caller ID

• Transmit attenuation setting of 0 dB to -9 dB

• Receive attenuation setting of 0 dB to -9 dB

• Selectable 600W, 900W, 600W+2.16µF, or

900W+2.16µF 2-wire VF interface

• Occupies a single slot in the Total Access 1000

RT Chassis

• UL 1950 compliant

• Extended temperature range of –40°C to +65°C

• Call Forward Disconnect

• Meets NEBS Level 3 requirements

2. INSTALLATION/OPERATION

C A U T I O N

SUBJECT TO ELECTROSTATIC DAMAGE

OR DECREASE IN RELIABILITY.

HANDLING PRECAUTIONS REQUIRED.

After unpacking the unit, inspect it for damage. If

damage is noted, file a claim with the carrier, then

contact ADTRAN. Refer to Warranty and Customer

Service.

The Total Access 1000 RT can be wall or pole

mounted. Templates are provided with each system to

support accurate mounting of the enclosure.

The Total Access 1000 RT complies with Part 15 of

the FCC rules. Operation is subject to the following

two conditions:

1. This device may not cause harmful interference,

and

2. This device must accept any interference

received, including interference that may cause

undesired operation.

Changes or modifications not expressly approved by

ADTRAN could void the user’s authority to operate

this equipment.

Compliance

See Table 1 for Compliance Codes.

Table 1. Compliance Codes

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)sissahC(

)CP(edoCrewoP

)CT(edoCnoitacinummoceleT

)CI(edoCnoitallatsnI

–

)USP(

)CP(edoCrewoP

)CT(edoCnoitacinummoceleT

)CI(edoCnoitallatsnI

–

)UILH(

)CP(edoCrewoP

)CT(edoCnoitacinummoceleT

)CI(edoCnoitallatsnI

–

)STOP(

)CP(edoCrewoP

)CT(edoCnoitacinummoceleT

)CI(edoCnoitallatsnI

–

CAUTION

Per GR-1089-CORE October 2002, Section 9,

the Total Access 1000 system is designed and

intended only for installation in a DC-C

(common) Bonding and Grounding system. It is

not intended or designed for installation in a

DC-I (isolated) Bonding and Grounding system.

Required Clearances

A minimum 18 inches of clearance is required in front

of the chassis to allow for opening of the enclosure

door.

Mounting Brackets

The Total Access 1000 RT enclosure contains

brackets that support wall or pole mounting.

Tools Needed (Wallmount or Pole Mount)

The Total Access 1000 RT Chassis mounts and

connects with standard fasteners and hand tools:

• Six #6 by 3/4-inch, flat-head wood screws

• Drill and drill bit set

• Flat-head screwdriver (medium)

• Two Phillips-head screw drivers (small/medium)

6 Section 61179001L1-5, Issue 3 61179001L1-5C

Table 2. Total Access 1000 Time Slot

Assignments

tolSlacisyhPdengissAtolSemiT1T

14-1

28-5

321-9

461-31

502-71

642-12

• Selected punch-down block and tool

• Mounting template (included)

Mounting The Enclosure

Install the enclosure as follows:

1. Position the mounting template at the desired

location, observe required clearances.

2. Ensure the mounting template is plumb then

mark through the template holes to identify

where the pilot holes will be drilled.

3. Using a 1/16-inch bit, drill pilot holes at the

marked locations.

4. Mount the chassis using the six #6 by 3/4-inch

flat-head wood screws.

Connections

All subscriber loop and network connections are made

through termination blocks. See Figure 5.

Connections for the commons and access modules are

made through the backplane. No additional backplane

wiring is necessary for operation.

UL Deployment Guidelines

• Terminate enclosure to a reliable ground source.

NOTE

Use 6 AWG wire for a solid ground connection

to the Total Access 1000 RT. Route the ground

wire through the smallest strain relief on the

bottom of the enclosure. Connect this end to the

grounding lug mounted on the ground bar.

Terminate the other end to a reliable ground

source.

• This unit shall be installed in accordance with the

requirements of NEC NFPA 70.

Loop Connection

One 25-pair termination block provides the

interconnect wiring for the access modules located in

slots 1 through 6 of the enclosure. Table 2 shows the

time slot assignment. The connections are terminated

by slipping the wire through the access holes and

pressing down the connectors (see Figure 5).

HDSL Connection

The HDSL signal and power are span connected to P2

and P3. This termination provides surge and

corrosion protection (see Figure 5).

HDSL Range Extender (HRE) Connection (Future)

The HDSL span can be extended by use of an HRE.

Two additional pairs are used and are termination to

P4 and P5. This termination provides surge and

corrosion protection (see Figure 5).

Bypass Pair Connection for MLT

A copper bypass pair can be used for MLT test access.

This pair is connected to termination P6. This

termination provides surge and corrosion protection

(see Figure 5).

Power Connection

There are no power terminations. All power is

derived from the HDSL span.

Timing Supply

There are no timing terminations. Timing is derived

from the HDSL span.

Office Alarms

There are no alarm terminations. All alarms are

carried to the central office via the HDSL (T-1)

overhead.

Carrier alarm condition such as a Red, Yellow, or

Blue (unframed all 1s) will be reported by the central

office equipment (Switch, Total Access 1500 or

TR008 carrier).

Installing cards

To install a Total Access 1000 RT card, grasp the unit

by the front panel while supporting the bottom side.

Align the card edges to the guide grooves and insert

the unit until the edge connector seats firmly into the

backplane. Lock the card in place by pushing in on the

locking lever.

61179001L1-5C Section 61179001L1-5, Issue 3 7

Figure 5. Total Access 1000 Component Layout and Cable Connections

12345

678910

11 12 13 14 15

2345

17 18 19 20

21 22 23 24

8 Section 61179001L1-5, Issue 3 61179001L1-5C

Description

Indicates HDSL signal quality on Loop 1 is in one of the following five states:

Off ................. No synchronization of ICOT and HLIU on Loop 1

Red ................ Poor signal quality on Loop 1 (≥ 10

-7

BER)

Yellow ........... Marginal signal quality on Loop 1 (≤ 2 dB margin above 10

-7

BER)

Green ............ Good signal quality on Loop 1 (> 2 dB margin above 10

-7

BER)

Blinking ........ Detected error on either end of Loop 1

Indicates HDSL signal quality on Loop 2 is in one of the following five states:

Off ................. No synchronization of ICOT and HLIU on Loop 2

Red ................ Poor signal quality on Loop 2 (≥ 10

-7

BER)

Yellow ........... Marginal signal quality on Loop 2 (≤ 2 dB margin above 10

-7

BER)

Green ............ Good signal quality on Loop 2 (> 2 dB margin above 10

-7

BER)

Blinking ........ Detected error on either end of Loop 2

Table 3. Front Panel Indicators (HLIU)

Indicator

LOOP1 .........................

LOOP2 .........................

Table 4. Front Panel Indicators (BCU)

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krowteN

ffO

deR

wolleY

neerG

rewopoN

nwod1T(mraladeRnitinU

)detcennoctonro

raf(mralawolleYgnivieceR

)deRnitinudne

noitarepolamroN

tseT

wolleYtseTni1TkrowteN

Front Panel Indicators

Front Panel indicators are used on the common

modules and the access modules for the Total Access

1000 RT.

NOTE

If there is inactivity at the ADMIN port for two

minutes, all front panel indicators except those

on the PSU will turn off. Push the LED/ACO

button on the BCU to activate the front panel

indicators.

PSU Front Panel Indicators

The Total Access 1000 RT PSU front panel contains

two LED indicators. They are Power and Ring. The

Power LED is ON when the power is good to the

chassis. The Ring LED is on when Ring is selected

and okay. The front panel also contains a Ring

Disable switch. This switch allows for the ring

voltage to be enabled or disabled.

HLIU Front Panel Indicators

The Total Access 1000 RT HLIU front panel contains

two LED indicators. They are Loop 1 and Loop 2.

Table 3 gives the front panel indicator descriptions.

BCU Front Panel Indicators

The front panel network LED labeled NETWORK

provides status information for the network T1 using a

color coded message format. The front panel TEST

LED provides test status information for the network

T1 and access modules. See Table 4.

POTS Front Panel Indicators

After the initialization sequence, status of the analog

service for each customer loop is shown by four

(green) front panel LEDs. See Table 5 for

descriptions.

3. PROVISIONING

ADMIN Port

The ADMIN interface on the Total Access 1000 RT

BCU is used to change factory selected options and

obtain access module status through menus. To

access the menus, connect a VT100 terminal or

computer running a terminal emulation program to the

craft interface port using a standard male-to-female

RS-232, DB-9 cable.

Craft port settings are as follows:

• 9600 Baud

• No parity

• 8 Data bits

• 1 Stop bit

Table 5. Front Panel Indicators (POTS)

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YSUB

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gnihsalF

gnicneuqeS

kooHnO

gnigniR

)ysuB(kooHffO

elbaliavanUtolSemiT

61179001L1-5C Section 61179001L1-5, Issue 3 9

CAUTION

The BCU retains provisioning setup when

removed from the chassis. If inserted into another

chassis, the provisioning setup is invoked on

that chassis’ access modules.

Windows HyperTerminal

Windows HyperTerminal can be used as a VT100

terminal emulation program. Open HyperTerminal by

selecting PROGRAMS / ACCESSORIES /

HYPERTERMINAL. Refer to the Help section of

HyperTerminal for additional information.

NOTE

To ensure proper display background in

Windows HyperTerminal, select VT100 terminal

emulation under SETTINGS.

Password

Upon initial connection, the password option is

factory disabled. To enable the password, select Bank

Controller (1)/ Password Control (8) /Enable

Password (2). The factory default is PASSWORD in

all capital letters. The password can be changed to a

user-selected password if desired. If the password is

enabled, after approximately eight minutes of

keyboard inactivity, the terminal times out and returns

to the password login screen.

Menu Navigation

To traverse through the menus, select the desired entry

and press ENTER. To work backward in the menu

press the ESC (escape) key. See Figure 6 for the

Total Access 1000 RT menu tree.

Common Module Provisioning

Bank Controller

The ADMIN Port provides access to set up the Bank

Controller. Set up of the Bank Controller includes

Configuration, Provisioning, Statistics, Performance,

Time Slot Usage, Testing, Password Control, and

Uploading Code. The Configuration menu allows the

user to view general information about the unit

including unit name, part number, CLEI code, and

revision numbers. The Provisioning menu for the

BCU allows the user to provision the T1. The settings

include T1 framing, T1 count, and T1 CSU loopback.

The Statistics menu allows the user to view and reset

statistics. The Performance menu allows the user to

view the T1 performance for different time periods.

The Time Slot Usage menu allows the user to view the

assignment of time slots for the unit. This menu also

gives the user access to any menus that are available

for the particular access modules. The Test menu

allows the user to perform T1 loopbacks. The

loopbacks include line loopback, payload loopback,

far-end payload loopback (ESF mode), and near-end

payload loopback (ESF mode). The Password Control

menu allows the user to enable or disable a password

and to set the password. The Upload Code menu

allows the user to configure and upload new versions

of code for the unit.

Line Interface Unit

The ADMIN Port provides access to set up the Line

Interface Unit. Menus for the Line Interface Unit

include Configuration, Status, and Performance. The

Configuration menu allows the user to view general

information about the unit including unit name, part

number, CLEI code, and revision numbers. The

Status menu allows the user to view the status of the

unit. The Performance menu allows the user to view

the performance for the far and near-end loops over

different time intervals.

Signal Quality

ES 15M/24H Errored Seconds

SES 15M/24H Severely Errored Seconds

UAS 15M/24H Unavailable Seconds

The Status Menu shows the signal quality on the loops

as well as any loopback information and an indication

of pair reversal.

An indication of Pair Reversal (if present) is given at

the bottom of the first key column.

A measure of signal quality (current/minimum/

maximum) for each HDSL loop is displayed on the

Current System Status screen. The noise margin is the

measure in dB above the 10

-7

BER.

Predicting performance based upon signal quality

varies with each loop. Generally, a noise margin of 0

or higher will support a bit error rate (BER) of better

than 10

-7

. ADTRAN has defined the following as

guidelines that correspond to the Loop 1 and Loop 2

signal quality (margin) messages (1=XX and 2=XX).

The first number is for the current 15-minute period and the second is the current 24-hour period (Loop 1 and Loop 2 numbers are displayed).

10 Section 61179001L1-5, Issue 3 61179001L1-5C

Figure 6. Total Access 1000 RT Menu Tree

61179001L1-5C Section 61179001L1-5, Issue 3 11

Margin = 0 Poor Loop Quality

Margin

2 Marginal Loop Quality

Margin

20 Good Loop Quality

The Performance Menu displays 24-hour performance

data. At each 15-minute interval, the performance

information is transferred to the 15-minute

performance data register accessed from the

Performance History screen. This unit displays

performance information in 60-minute increments.

System Alarms

The ADMIN Port provides access to the System

Alarms menu. The status of visual and T1 alarms are

available at this menu. The menu also provides the

ringer status.

Provisioning Templates

The ADMIN Port provides access to templates that

automatically provision the unit. These include the

factory default template, TR-08 A-digroup, TR-08 B,

C, D-digroup, and ADTRAN Total Access 4303

Mode.

Access Module Provisioning

POTS

There are no hardware options on the Quad POTS

access module. The module has factory default

settings for each of the four analog interfaces on the

module. The ADMIN Port is used if any other settings

or provisioning options are desired. The factory

default setting for the QUAD POTS interfaces are as

follows:

• Loop start signaling

• Automatic loop provisioning enabled

The menus available through the ADMIN Port

provide access to Configuration, Provisioning, Status,

and Test options. The Configuration menu provides

information regarding the unit name, CLEI code, part

number, and software revision. The Provisioning

menu allows the user to select the operation mode,

transmit and receive attenuation, and 2-wire line

impedance, restore the default settings, and copy the

settings to other units. The Status menu allows the

user to view the settings for all four time slots that

were selected in the Provisioning menu. The Test

menu allows the user to initiate tests. The tests

include a digital loopback test, network on-hook/off-

hook test, customer ring test, and 1000 Hz DRS tone

generation test.

Signaling States

The following signaling states are supported:

• Loop Start

• Ground Start

• TR008 Signal Party

• TR008 Universal Voice Grade

• Tandem

• DPO

Automatic Loop Provisioning

The Quad POTS incorporates a feature that

automatically detects loop length and sets the

termination impedance and gain for transmit and

receive attenuation levels. This feature is enabled

from the factory and can be disabled through the craft

interface on the BCU.

For short loops, the termination impedance is set to

600 ohms + 2.16 uF and the gain is set to -6 dB for

transmit and -3 dB for receive attenuation levels. For

longer loops, the termination impedance is set to 900

ohms + 2.16 uF and the gain is set to -3 dB for

transmit and receive attenuation levels.

Setting Attenuation with Known TLP

For applications where input and output Transmission

Level Points are known, the transmit and receive

attenuation levels can be calculated to ensure optimum

VF characteristics. This is defined in AT&T

Publication 43801 which explains that the value of the

digital signal at reference point TLP0 should be equal

to 0 dBm0, or a digital milliwatt for optimum

performance (proper volume heard through the

telephone). See Figure 7 which displays the TLP

reference points (input, output, TLP0) and attenuation

parameters.

Figure 7. Circuit Path

0 to -9 dB

TLP0

TX Atten

0 dBm0

0 to -9 dB

0 to +9 dB

-9 to 0 dB

TLP0

RX Atten

0 dBm0

Transmit Path (To Backplane)

Receive Path (From Backplane)

Input TLP

Point

Output TLP

Point

The first number is for the current 15-minute period and the second is the current 24-hour period (Loop 1 and Loop 2 numbers are displayed).

12 Section 61179001L1-5, Issue 3 61179001L1-5C

Transmit Attenuation

Determine the input TLP. Then use the following

formula to calculate the amount of transmit

attenuation to add to the circuit:

TX Attenuation = Input TLP

Example: if an input TLP of 3 dB is to produce a level

of 0 dBm0 at TLP0, then the Transmit Attenuation

should be set to 3.0 dB.

Receive Attenuation

Determine the output TLP. Then use the following

formula to calculate the amount of receive attenuation

to add to the circuit:

RX Attenuation = Output TLP

Example: if 0 dBm0 at TLP0 is required to produce an

output TLP level of -3 dB, then the Receive

Attenuation should be set to 3.0 dB.

4. TESTING

HLIU

The Total Access 1000 RT HLIU provides diagnostic,

loopback, and signal monitoring capabilities.

HLIU Network Loopback

The HLIU responds to a loopback activation process.

The loopback position is a logic loopback located

within the HLIU internal HDSL transceiver. See

Figure 8.

Third, the Total Access 1000 RT HLIU responds to

T1 Network Interface Unit (NIU) loopback codes as

described in Bellcore TR-TSY-000312 if the HLIU is

optioned for NIU loopbacks. The NIU loopback

codes are as follows:

In-Band Codes ESF Codes

Loop Up 110000001 0010 1111 1111

Loop Down 111000010 0100 1111 1111

Receiving the in-band codes for more than five

seconds or the Extended Superframe (ESF) codes four

consecutive times will cause the appropriate loopback

action.

BCU

The Total Access 1000 RT BCU provides a variety of

test options for both the Network T1 and DS0 access

modules.

T1 Loopbacks

The Total Access 1000 RT supports several T1

loopbacks via the craft interface. These loopbacks

include:

• Initiating a remote payload or line loopback

command (ESF mode only).

• Responding to a remote payload or line loopback

command (ESF mode only).

• Responding to a remote CSU loopback

command.

Self-Test

The BCU goes into self-test when inserted into an

active Total Access 1000 RT chassis. The self-test

checks internal BCU circuitry. A failed test causes the

front panel Network LED to blink red.

POTS

Self-Test

A self-test is performed on the Quad POTS when it is

inserted into an active Total Access 1000 RT chassis.

The test verifies proper operation of critical circuits. If

the test is successful all four LEDs turn On in a

predefined sequence, the unit is placed in service, and

the LEDs then return to normal operation showing

current status of the POTS.

Initiated Tests

Other tests conducted on the Quad POTS are initiated

via the screen menus and VT100 terminal.

Digital Loopback Test

The Digital Loopback Test is used to loopback DS0

data coming from the network for each individual

First, loopback activation may be accomplished using

the control port of the ICOT. Refer to the ADTRAN

ICOT Installation and Maintenance practices

P/N 61179510L2 (220), P/N 6117911L2 (Total

Access 3000), and P/N 61179512L2 (3192) for more

information.

Second, the Total Access 1000 RT HLIU will respond

to the industry defacto HDSL loopback codes as

designated in the ANSI document T1E1.4/92. A

synopsis of the method described by ANSI is

presented in Appendix A.

Figure 8. HDSL Loopback

61179001L1-5C Section 61179001L1-5, Issue 3 13

channel. Received data is latched in on the appropriate

receive time slot on the receive bus. This data is then

placed on the transmit bus in the unit’s transmit time

slot.

Network On-hook / Off-hook Test

The Network On-hook / Off-hook test is used to test

signaling sent to the network by the unit. When

On-hook Test is selected, On-hook signaling is sent to

the network. When Off-hook Test is selected,

Off-hook signaling is sent to the Network. The

customer loop is forced On-hook while this test is

active.

Customer Ring Test

The Customer Ringing Test will activate the unit’s

ring relay in a 2-on / 4-off ring cadence, providing

ringing to the customer loop.

1000 Hz DRS Tone Generation Test

The 1000 Hz DRS (Digital Reference Signal) Tone

Generation Test is used to send DRS signal on the

receive path to the loop. The loop receive level that

should be received is determined by the following

equation:

Receive Level = 0 dB - Attenuation

5. HDSL DEPLOYMENT GUIDELINES

The ADTRAN HDSL system is designed to provide

DS1 based services over loops designed to comply

with carrier service area (CSA) guidelines. CSA

deployment guidelines are given below:

1. All loops are nonloaded only.

2. For loops with 26-AWG cable, the maximum

loop length including bridged tap lengths is 9 kft.

3. For loops with 24-AWG cable, the maximum

loop length including bridged tap lengths is

12 kft.

4. Any single bridged tap is limited to 2 kft.

5. Total bridged tap length is limited to 2.5 kft.

6. The total length of multigauge cable containing

26-AWG cable must not exceed the following:

12 - {(3*L

)/(9- L

BTAP

)} (in kft)

= Total length of 26-AWG cable

excluding bridged taps (in kft)

BTAP

= Total length of all bridged taps (in kft)

Table 6. HDSL Loss Values

(200 kHz cable loss in dB/kft at 135 Ω)

Cable Gauge

Cable Type

PIC

Pulp

PIC

Pulp

PIC

Pulp

PIC

Pulp

Temperature

68° 90° 120°

3.902 4.051 4.253

4.030 4.179 4.381

2.863 2.957 2.083

3.159 3.257 3.391

2.198 2.255 2.333

2.483 2.450 2.629

1.551 1.587 1.634

1.817 1.856 1.909

Figure 9. CSA Deployment Guidelines

This deployment criteria is summarized in the chart

shown in Figure 9.

Loop loss per kft for other wire is summarized in

Table 6.

14 Section 61179001L1-5, Issue 3 61179001L1-5C

Recommended maximum local loop loss information

for PIC cable at 70°F, 135 Ω resistive termination is

provided in Table 7.

Table 8. HLIU Troubleshooting Guide

Solution

1. Push the LED/ACO button on the BCU. If there is inactivity at the ADMIN port for 2

minutes, then all LEDS except those on the PSU will turn off.

2. Make sure the HLIU is properly seated in the housing.

3. Verify that the ICOT is delivering sufficient simplex voltage to the loops, if line powered.

The ICOT should apply approximately 130 VDC between loops on point-to-point circuits or

with only one HRE. Circuits with two HREs will apply a voltage of approximately -190

VDC between the loops. A minimum of approximately 65 V should be present between the

HDSL loops at the HLIU.

4. If Steps 1 and 2 pass, replace the HLIU.

1. Verify that the loop conforms with CSA guidelines (not too long, etc.).

2. Verify that the tip and ring of each HDSL loop belong to the same twisted pair.

3. Verify that loop loss at 200 kHz is not greater than 35.25 dB.

4. Verify that noise on both HDSL loops is within acceptable limits (see Section 5).

5. If Steps 1 through 4 pass and loop sync is still not available, replace the unit with one known

to be in proper working condition.

Condition

All front panel indicators are Off.

Power is present and adequate, but

loop sync is not available (LP1

and/or LP2 LEDs are Off).

Table 7. Loop Insertion Loss Data

Frequency Maximum Loss

(Hz) (dB)

3,000 .......................................... 12.00

10,000 ........................................ 15.00

50,000 ........................................ 25.50

100,000 ...................................... 30.00

150,000 ...................................... 32.75

196,000 ...................................... 35.00

200,000 ...................................... 35.25

250,000 ...................................... 37.50

300,000 ...................................... 42.00

An approximation for the maximum amount of

wideband noise on an HDSL local loop as measured

by a 50 kb filter is -31 dBrn.

An approximation for the maximum level of impulse

noise as measured using a 50 kb filter on an HDSL

loop is -50 dBrn.

NOTE

These approximations are to be used as guidelines

only and may vary slightly on different loops.

Adhering to the guidelines should produce

performance in excess of 10

-7

BER.

6. HLIU TROUBLESHOOTING PROCEDURES

Use Table 8 to troubleshoot the ADTRAN Total

Access HLIU.

Table 9. Specifications

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7. SPECIFICATIONS

The specifications for the Total Access 1000 RT can

be found in Table 9.

61179001L1-5C Section 61179001L1-5, Issue 3 15

8. ORDERING GUIDE

Table 10 provides needed information for ordering.

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Table 10. Ordering Guide

9. MAINTENANCE

The Total Access 1000 RT Chassis does not require

maintenance for normal operation.

ADTRAN does not recommend that repairs be

attempted in the field. Repair services are obtained by

returning the defective unit to ADTRAN Customer

Service.

10. WARRANTY AND CUSTOMER SERVICE

ADTRAN will replace or repair this product within

the warranty period if it does not meet its published

specifications or fails while in service. Warranty

information can be found at

www.adtran.com/warranty.

U.S. and Canada customers can also receive a copy of

the warranty via ADTRAN’s toll-free faxback server

at 877-457-5007.

• Request Document 414 for the U.S. and Canada

Carrier Networks Equipment Warranty.

• Request Document 901 for the U.S. and Canada

Enterprise Networks Equipment Warranty.

Refer to the following subsections for sales, support,

CAPS requests, or further information.

ADTRAN Sales

Pricing/Availability:

800-827-0807

ADTRAN Technical Support

Pre-Sales Applications/Post-Sales Technical Assistance:

800-726-8663

Standard hours: Monday - Friday, 7 a.m. - 7 p.m. CST

Emergency hours: 7 days/week, 24 hours/day

ADTRAN Repair/CAPS

Return for Repair/Upgrade:

(256) 963-8722

Repair and Return Address

Contact Customer and Product Service (CAPS) prior

to returning equipment to ADTRAN.

ADTRAN, Inc.

CAPS Department

901 Explorer Boulevard

Huntsville, Alabama 35806-2807

16 Section 61179001L1-5, Issue 3 61179001L1-5C

61179001L1-5C Section 61179001L1-5, Issue 3 A-1

HDSL MAINTENANCE MODES

This Appendix describes operation of the HDSL

system with regard to detection of in-band and ESF

facility data link loopback codes.

Upon deactivation of a loopback, the HDSL system

will synchronize automatically.

Loopback Process Description

In general, the loopback process for the HDSL

system elements is modeled on the corresponding

DS1 system process. Specifically, the ICOT

loopback is similar to an Intelligent Office Repeater

loopback, and the HLIU loopbacks are similar to an

inline T1 Repeater loopback.

Appendix A

HDSL Loopbacks

In-band control code sequences are transmitted over

the DS1 link by either the insert or overwrite

method. The HDSL elements respond to either

method. The insert method produces periodic

control sequences that are not overwritten by the

DS1 framing bits. The overwrite method produces

periodic control sequences. However, once per

frame, the framing bit overwrites one of the bits in

the control sequence. The unit can detect the

loopback activation or deactivation code sequence

only if an error rate of 1E

-03

or better is present.

Loopback Control Codes

Control sequences are summarized in Table A-1

and Table A-2.

NOTE

In all control code sequences presented, the

in-band codes are shown with the left-most bit

transmitted first, and the ESF data link codes

with right-most bit transmitted first.

Table A-1. HDSL Loopback Control Codes

Source Code Name

(N) ................ 3in7 (1110000) ............. Loopback data from network toward network in the HTU-C.

(N) ................ 4in7 (1111000) ............. Loopback data from network toward network in the ICOT.

(N) ................ 2in6 (110000) ............... Loopback data from network toward network in first HRE.

(N) ................ 3in6 (111000) ............... Loopback data from network toward network in second HRE.

(N) ................ FF1E ............................. Loopback data from network toward network at ICOT.

(N) ................ FF04 ............................. Loopback data from network toward network at HRE1.

(N) ................ FF06 ............................. Loopback data from network toward network at HRE2.

(N) ................ FF02 ............................. Loopback data from network toward network at HLIU.

(N) ................ 1in6 (100000) ............... Loopback data from network toward network at HLIU.

(N) ................ FF48 (ESF-DL) ............ Loopback data from network toward network at HLIU.

(N/C) ............. 1in3 (100) ..................... Loopdown everything.

(N/C) ............. FF24 (ESF-DL) ............ Loopdown everything.

Type

Abbreviated

Wescom

The Source column indicates which side of the interface the control codes are sent from. For example, an (N) indicates a network sourced

code while a (C) indicates a customer sourced code.

All codes are in-band unless labeled ESF-DL

All codes listed above must be sent for a minimum of 5 seconds in order for them to be detected and acted upon.

A-2 Section 61179001L1-5, Issue 3 61179001L1-5C

Table A-2. In-Band Addressable Loopback Codes

Code and

Function Response

Arm ............................................... 11000 (also known as a 2-in-5 pattern)

The HLIU will loop up toward the network. No AIS or errors will be sent as a result of this loopback.

The ICOT and HRE will arm.

Disarm ........................................... 11100 (also known as a 3-in-5 pattern)

The ICOT and HRE are removed from the armed state. If any of the units are in loopback when the

11100 pattern is received, they will loop down. The LBK LEDs will turn off on all units.

ICOT Network Loop Up ............... D3D3 (1101 0011 1101 0011)

If the units have been armed and no units are in loopback*, the ICOT will loop up toward the

network, 2 seconds of AIS (all 1s) will be sent, 5 seconds of data will pass, and 231 bit errors will be

injected into the DSX-1 signal. As long as the pattern continues to be sent, 231 errors will be injected

every 20 seconds. When the pattern is removed, the unit will remain in loopback. If the pattern is

reinstated, the injection of 231 bit errors will resume at 20-second intervals.

Loop Down ................................... 9393 (1001 0011 1001 0011)

Any ICOT and HRE units currently in loopback toward the network will loop down and will retain

the armed state.

Query Loopback ............................ D5D5 (1101 0101 1101 0101)

If the units are armed and the ICOT, HRE, or HLIU are in network loopback, errors are injected into

the DSX-1 signal upon detection of the query loopback pattern. As long as the pattern continues to be

sent, errors are injected again every 20 seconds. The number of errors injected each time depends on

which unit is in loopback. If the ICOT is in network loopback, 231 errors are injected, 20 at a time if

the HLIU is in network loopback, 10 at a time if HRE #1 is in network loopback, and 200 at a time if

HRE #2 is in network loopback.

Loopback Time Out Override ........ D5D6 (1101 0101 1101 0110)

If the units are armed and this pattern is sent, the loopback time out will be disabled. The time out

option will be updated on the Provisioning menu of the HLIU (viewable through the RS-232 port) to

None. As long as the units remain armed, the time out will remain disabled. When the units are

disarmed, the loopback time out will return to the value it had before the D5D6 code was sent.

Note: All codes listed above must be sent for a minimum of 5 seconds in order for them to be detected and acted upon.

* If NIU is enabled, then the HLIU can be in network loopback when the ICOT or HRE loop up codes are sent.

ADTRAN 1000 Installation and Maintenance

ADTRAN 1000 Installation and Maintenance

ADTRAN 1000 Installation and Maintenance

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