Adtran TSU LT User Manual

TSU LT

User Manual

Part Number 1202060L2-1

Document Number 1202060L2-1
February 1999

901 Explorer Boulevard

P. O. Box 140000

Huntsville, AL 35814-4000

Phone: [phone]

© 1999 ADTRAN, Inc.

All rights reserved.

Printed in USA.

ADTRAN Year 2000 (Y2K) Readiness Disclosure

ADTRAN has established a Year 2000 program to ensure that our products will
correctly function in the new millennium. ADTRAN warrants that all products
meet Y2K specifications regardless of model or revision.

Information about ADTRAN’s Y2K compliance program is available at the fol­lowing locations:

ADTRAN Web Site www.adtran.com

Product Matrix www.adtran.com/y2kfax.html

Faxback Document
Line

Y2K Project Line [phone]

E-mail [e-mail]

[phone]

Y2K plans and product certifications are
listed in the matrix.

iii

FCC regulations require that the following information be pro­vided to the customer in this manual.

1. This equipment complies with Part 68 of the FCC rules.
The required label is attached to the bottom of the chassis.

2. If your TSU LT causes harm to the telephone network, the
telephone company may discontinue your service tempo­rarily. If possible, they will notify you in advance. If
advance notice is not practical, you will be notified as soon
as possible. You will be advised of your right to file a com­plaint with the FCC.

3. Your telephone company may make changes in its facili­ties, equipment, operations, or procedures that could affect
the proper operation of your equipment. If they do, you
will be given advance notice so as to give you an opportu­nity to maintain uninterrupted service.

4. If you experience trouble with the TSU LT equipment,
please contact ADTRAN at [phone] for repair/ war­ranty information. The telephone company may ask you to
disconnect the equipment from the network until the prob­lem has been corrected, or until you are sure the equipment
is not malfunctioning.

5. This unit contains no user-serviceable parts.

6. An FCC compliant telephone cord and modular plug is
provided with this equipment. This equipment is designed
to be connected to the telephone network or premises wir­ing using a compatible modular jack which is Part 68 com­pliant. See installation instructions for details.

7. The following information may be required when applying
to your local telephone company for leased line facilities.

Service Type REN/SOC FIC USOC

1.544 Mbps - SF 6.0F 04DU9-BN RJ48C

1.544 Mbps - SF and B8ZS 6.0F 04DU9-DN RJ48C

1.544 Mbps - ESF 6.0F 04DU9-1KN RJ48C

1.544 Mbps - ESF 6.0F 04DU9-1SN RJ48C

iv

FEDERAL COMMUNICATIONS COMMISSION
RADIO FREQUENCY INTERFERENCE STATEMENT:

This equipment has been tested and found to comply with the limits for a Class
A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful interference when the equip­ment is operated in a commercial environment. This equipment generates, uses,
and can radiate radio frequency energy and, if not installed and used in accor­dance with the instruction manual, may cause harmful interference to radio fre­quencies. Operation of this equipment in a residential area is likely to cause
harmful interference, in which case the user will be required to correct the inter­ference at his own expense.

Shielded cables must be used with this unit to ensure compliance with Class A
FCC limits.

Changes or modifications to this unit not expressly approved by
the party responsible for compliance could void the user’s author­ity to operate the equipment.

v

CANADIAN EQUIPMENT LIMITATIONS

The Industry Canada Certification label identifies certified equip­ment. This certification means that the equipment meets certain
telecommunications network protective, operational, and safety
requirements. The Department does not guarantee the equipment
will operate to the user's satisfaction.

Before installing this equipment, users should ensure that it is permissible to be
connected to the facilities of the local telecommunications company. The equip­ment must also be installed using an acceptable method of connection. In some
cases, the company's inside wiring associated with a single line individual ser­vice may be extended by means of a certified connector assembly (telephone
extension cord). The customer should be aware that compliance with the above
conditions may not prevent degradation of service in some situations.

Repairs to certified equipment should be made by an authorized Canadian
maintenance facility designated by the supplier. Any repairs or alterations
made by the user to this equipment, or equipment malfunctions, may give the
telecommunications company cause to request the user to disconnect the equip­ment.

Users should ensure for their own protection that the electrical ground connec­tions of the power utility, telephone lines and internal metallic waterpipe sys­tem, if present, are connected together. This precaution may be particularly
important in rural areas.

Users should not attempt to make such connections themselves,
but should contact the appropriate electric inspection authority,
or an electrician, as appropriate.

The Load Number (LN) assigned to each terminal device denotes the percent­age of the total load to be connected to a telephone loop which is used by the
device, to prevent overloading. The termination on a loop may consist of any
combination of devices subject only to the equipment that the total of the LNs of
all devices does not exceed 100.

The ringer equivalence number (REN) assigned to each terminal adapter is
used to determine the total number of devices that may be connected to each
circuit. The sum of the RENs from all devices in the circuit should not exceed a
total of 5.0.

vi

IMPORTANT SAFETY INSTRUCTIONS

When using your telephone equipment, please follow these
basic safety precautions to reduce the risk of fire, electrical
shock, or personal injury:

1 Do not use this product near water, such as near a bath

tub, wash bowl, kitchen sink, laundry tub, in a wet base­ment, or near a swimming pool.

2 Avoid using a telephone (other than a cordless-type) dur-

ing an electrical storm. There is a remote risk of shock
from lightning.

3 Do not use the telephone to report a gas leak in the vicin-

ity of the leak.

4 Use only the power cord, power supply, and/or batteries

indicated in the manual. Do not dispose of batteries in a
fire. They may explode. Check with local codes for spe­cial disposal instructions.

SAVE THESE INSTRUCTIONS

vii

Warranty and Customer Service

ADTRAN will replace or repair this product within five years from the date of
shipment if the product does not meet its published specifications or if it fails
while in service. For detailed warranty, repair, and return information, see the
ADTRAN Equipment Warranty and Repair and Return Policy Procedure.

Return Material Authorization (RMA) is required prior to returning equipment
to ADTRAN.

For Service, RMA requests, or more information, contact one of the numbers
found at the inside back page of this manual.

viii

Tab l e of Co ntents

Chapter 1. Introduction .......................................................................................... 1-1

T1/FT1 Overview ..................................................................................................... 1-1

T1 Service Offerings........................................................................................... 1-1

Fractional T1........................................................................................................ 1-2

TSU LT Overview............................................................................................... 1-2

Functional Description .............................................................................. 1-2

TSU LT Rear Panel ............................................................................................. 1-4

TSU LT Features ................................................................................................. 1-5

TSU LT Interfaces............................................................................................... 1-5

Network Interface (NI) .............................................................................. 1-6

Nx56/64 Serial Interface ........................................................................... 1-6

Control Port Input ...................................................................................... 1-6

Chain Port Output ..................................................................................... 1-7

Software Management....................................................................................... 1-7

Front Panel .................................................................................................. 1-7

T-Watch Pro Management Software Program ....................................... 1-7

TSU LT Testing ................................................................................................... 1-8

Self-test ........................................................................................................ 1-8

Loopback Tests ........................................................................................... 1-8

DTE Interface Loopbacks ........................................................................ 1-10

Pattern Generation ........................................................................................... 1-11

Bridge/Router Application ............................................................................ 1-11

Chapter 2. Installation ............................................................................................ 2-1

Inspecting for Damages ........................................................................................... 2-1

Items Shipped by ADTRAN............................................................................. 2-1

Items Provided by Customer............................................................................ 2-1

Power Connection.............................................................................................. 2-2

Power Up Testing and Initialization ............................................................... 2-2

Self-test ........................................................................................................ 2-2

Chapter 3. Operation............................................................................................... 3-1

Operation ................................................................................................................... 3-1

General Menu Operation .................................................................................. 3-1

612020 60 L2 - 1 TSU LT User Ma nu al ix

Table of Contents

Menu Structure ...................................................................................................3-2

Four Opening Menu Functions ................................................................ 3-3

STATUS ....................................................................................................... 3-3

CONFIG .......................................................................................................3-3

UTIL ............................................................................................................. 3-3

TEST ............................................................................................................. 3-4

Menu Features .................................................................................................... 3-5

Data Field .................................................................................................... 3-5

Display Field ............................................................................................... 3-5

Arrows ......................................................................................................... 3-5

Example Menu Operations ....................................................................... 3-5

Front Panel ..........................................................................................................3-8

Chapter 4. Status Menu .......................................................................................... 4-1

STATUS ...................................................................................................................... 4-1

NI PERF RPTS.....................................................................................................4-2

CURR ERR/ALM ............................................................................................... 4-3

Alarms and Errors ...................................................................................... 4-4

ERR/ALM Hist ...................................................................................................4-5

Chapter 5. Configuration Menu............................................................................ 5-1

CONFIG ..................................................................................................................... 5-1

Network (NI)....................................................................................................... 5-2

FORMAT .....................................................................................................5-2

CODE ........................................................................................................... 5-2

YEL ALRM .................................................................................................. 5-2

XMIT ALRM ............................................................................................... 5-3

CLOCK SOURCE ....................................................................................... 5-3

BIT STUFFING ............................................................................................ 5-5

SET LBO ....................................................................................................... 5-5

RX SENSITIVITY ........................................................................................ 5-5

Unit ....................................................................................................................... 5-6

CNTRL PORT ............................................................................................. 5-6

POSITION of TSU LT ................................................................................ 5-6

MODEM INIT ............................................................................................. 5-7

DATA RATE ............................................................................................... 5-7

ALARMS .....................................................................................................5-7

TRAPS .......................................................................................................... 5-7

OUTPUT ...................................................................................................... 5-7

TEL NUM .................................................................................................... 5-8

Port ....................................................................................................................... 5-8

RATE 56/64 ................................................................................................. 5-8

x TSU LT User Manual 61202060L2-1

Table of Contents

CHANNELS ................................................................................................ 5-8

DTE TX CLK ............................................................................................... 5-9

START CHAN ............................................................................................ 5-9

# OF CHAN ................................................................................................. 5-9

DATA ........................................................................................................... 5-9

CTS ............................................................................................................. 5-10

DCD ........................................................................................................... 5-10

DSR ............................................................................................................. 5-10

INBAND .................................................................................................... 5-10

Chapter 6. Utility Menu .........................................................................................6-1

UTIL ............................................................................................................................ 6-1

Time/Date ........................................................................................................... 6-2

Software Rev ...................................................................................................... 6-2

Reinit Unit ........................................................................................................... 6-3

Address................................................................................................................ 6-3

Set Passcode ........................................................................................................ 6-3

Fact Restore ......................................................................................................... 6-3

Chapter 7. Test Menu.............................................................................................. 7-1

TEST ...........................................................................................................................7-1

Network Tests..................................................................................................... 7-2

LOCAL LOOPBCK .................................................................................... 7-2

REMOTE LOOPBCK ................................................................................. 7-2

TEST PATTERN ......................................................................................... 7-3

CLR ERRORS .............................................................................................. 7-4

INSERT 511 ERRORS ................................................................................7-4

Run Self-test ........................................................................................................ 7-4

Port Tests ............................................................................................................. 7-6

Chapter 8. Example Operations ............................................................................ 8-1

Testing Examples ...................................................................................................... 8-1

Far End Looped Back Test ................................................................................ 8-1

Network Interface Test ...................................................................................... 8-1

Appendix A. TSU LT Menu Tree....................................................................... A-1

Appendix B. DTE Data Rate Chart ..................................................................... B-1

Appendix C. Pinouts............................................................................................. C-1

Wiring ....................................................................................................................... C-1

Network.............................................................................................................. C-1

612020 60L2-1 TSU LT User Manua l xi

Table of Contents

Control-In/Chain-In ......................................................................................... C-2

Chain-Out ........................................................................................................... C-3

Nx56K/64K DTE (V.35).................................................................................... C-4

Index ...................................................................................................................Index-1

xii TSU LT User Manual 61202060L2-1

List of Figures

Figure 1-1. TSU LT Unit - Front View .................................................................... 1-3

Figure 1-2. TSU LT Rear Panel ................................................................................ 1-4

Figure 1-3. TSU LT Interfaces.................................................................................. 1-5

Figure 1-4. Network Loopback Tests ..................................................................... 1-9

Figure 1-5. DTE Interface Loopback .................................................................... 1-10

Figure 1-6. Simple Bridge Application on a T1 or FT1 Circuit..........................1-11

Figure 3-1. TSU LT Main Menus............................................................................. 3-1

Figure 3-2. TSU LT Main Menu Screen.................................................................. 3-2

Figure 3-3. Cursor on Menu Item. .......................................................................... 3-6

Figure 3-4. Submenu Fields..................................................................................... 3-6

Figure 3-5. Front Panel Layout ............................................................................... 3-8

Figure 4-1. Status Menu.......................................................................................... 4-1

Figure 4-2. Severely Errored Seconds Screen........................................................ 4-2

Figure 4-3. Loss of Signal (Current Errors/Alarms) Screens ............................. 4-3

Figure 4-4. Clear History Screen............................................................................. 4-5

Figure 5-1. Configuration Menu............................................................................. 5-1

Figure 5-2. Network Submenu ............................................................................... 5-2

Figure 5-3. Network Timed Clock Source ............................................................. 5-4

Figure 5-4. DTE Clock Source ................................................................................. 5-4

Figure 5-5. Internal Clock Source ........................................................................... 5-5

Figure 5-6. Configuration Submenu ...................................................................... 5-6

Figure 5-7. Inband Remote Configuration...........................................................5-11

Figure 6-1. Utility Menu .......................................................................................... 6-1

Figure 6-2. Time/Date Screen ................................................................................. 6-2

Figure 6-3. Address Screen ...................................................................................... 6-3

Figure 7-1. Test Menu............................................................................................... 7-1

Figure 7-2. Local Loopback Screen......................................................................... 7-2

Figure 7-3. Clear Errors Screen ............................................................................... 7-4

61202060L2-1 TSU LT User Manual xiii

List of Figures

Figure 7-4. Self Test Results Screen.........................................................................7-5

Figure 7-5. Loopback Setting Screen ...................................................................... 7-6

Figure 8-1. Main Menu with TEST Selected ......................................................... 8-2

Figure 8-2. Test Menu with NETWORK TESTS Selected.................................... 8-2

Figure 8-3. Local Loopback Test Menu .................................................................. 8-3

Figure 8-4. Remote Loopback Test Menu .............................................................. 8-3

Figure 8-5. Test Pattern Screen ................................................................................ 8-4

Figure 8-6. Clear Errors Screen ............................................................................... 8-5

Figure A-1. TSU LT Menu Tree (Status and Config)........................................... A-1

Figure A-2. TSU LT Menu Tree (Util and Test)....................................................A-2

xiv TSU LT User Manual 612 02060L2-1

List of Tables

Table 5-1. Normal Mode Operation.................................................................... 5-10

Table 6-1. Editing the Time/Date ..........................................................................6-2

Table B-1. DTE Data Rate vs. DS0s ........................................................................B-1

Table C-1. Network Pin Assignments .................................................................. C-1

Table C-2. Control-In/Chain-In Pin Assignments ............................................. C-2

Table C-3. Chain-Out Pin Assignments ............................................................... C-3

Table C-4. Primary V.35 Pin Assignment ............................................................ C-4

61202060L2-1 TSU LT User Manual xv

List of Tables

xvi TSU LT User Manual 61202060L2-1

Chapter 1

Introduction

T1/FT1 OVERVIEW

T1 digital communication links have been used by the
telephone companies (telcos) for voice transmission since the
early sixties. The D4 channel bank is an example of a T1
digital carrier system that was introduced in the mid­seventies and is still widely used by the telcos.
Communication demands of businesses continued to grow to
the point that the telcos began offering T1 service directly to
the public. D4 channel banks began to be used for T1 in
corporate network topographies for voice. The technological
advances in computer development also created a demand
for T1 data communication which now is a large part of the
T1 traffic.

T1 Service Offerings

T1 is a digital service that is delivered to the user over two
pairs of wires from the service provider. The signal operates
at 1.544 mega bits per second (Mbps) and is usually extended
by repeaters that are installed about every mile after the first
6000 feet. The T1 signal is divided into 24 time slots or digital
signal level zeros (DS0s) which operate at 64 kilo bits per
seconds (kbps). Each time slot is occupied by digitized voice
or by data.

1202060L2-1 TSU LT User Man ual 1-1

Fracti on al T1

Chapter 1. Introduc tion

The T1 signal originally used a type of framing known as D4
Superframe which identifies how the T1 is multiplexed.
Extended Superframe (ESF) is an enhancement of that
framing format. ESF provides a non-disruptive means of full
time monitoring on the digital facility. It was originally used
by the service provider to monitor the performance of their
service offering. Since the introduction of ESF, equipment
that is installed in private networks can also provide the
same performance information to the user.

Fractional T1 (FT1) allows the buyer to purchase less than a
full T1 circuit between two points. Most carriers offer
fractional T1 in increments of 56 or 64 kbps. Connection is
made to the same network elements. The network allows
multiple users to share the same interoffice T1 bandwidth.

FT1 remains almost exclusively an inter-exchange carrier
(IXC) service. Local exchange carriers (LECs) typically do
not offer FT1, so the user’s proximity to the IXC’s point-of­presence (POP) is key in the savings that fractional T1 offers.

FT1 local access is available in two forms:

56 kbps

•
service (DDS) lines is extended from the IXC POP and
the bandwidth is combined at the office on an outbound
T1 circuit. The user pays for the individual 56K lines and
the amount of the interoffice T1 utilized

Full T1 line

•
the IXC POP and then only for the bandwidth utilized.

1-2 TSU LT User Manu al 1202060L2-1

- In 56 kbps the required number of digital data

- In T1 access, the user pays for a full T1 to

TSU LT Overview

This section provides a functional description of the TSU LT,
describes its features, and illustrates its four interfaces.

Functional Description

The ADTRAN TSU LT is one of several T1 multiplexers that
offer complete flexibility for connection of various data
sources to T1 or FT1 facilities. This family of TSU
multiplexers includes the following:

Chapter 1. Introduct ion

TSU LT

TSU

•

TSU LT -

and

T1 CSU/DSUs with a single Nx56K/

64K serial port.

TSU 100

•

- Same as the TSU with the added feature of a
slot in the rear panel to house an option module. Each
module offers up to four additional data ports.

TSU 600

•

- Same as the TSU with the added feature of six
slots in the rear panel to house up to six option modules.
Each module offers up to four additional data ports for a
total of 24 possible data ports.

CANCEL

ENTER

PWR

TD

TEST

ALM

ERR

CS

RS

RD

Figure 1-1. TSU L T Unit - Front View

The TSU LT serves as the link between user data sources such
as local area network (LAN) bridges and routers, computers,
CAD systems, and teleconferencing equipment. The amount
of bandwidth allocated to the port is custom programmable.
The data terminal equipment (DTE) data can occupy
contiguous or alternate channels in the T1 stream, and the
channels may start at any position.

1202060L2-1 TSU LT User Man ual 1-3

TSU LT Rear Panel

Number Identification for TSU LT Rear Panel

No. Item Function

1 Network T1-FT1 network interface

2 In Bantam test jack

3Out Bantam test jack

4 MON (Monitor) Bantam test jack

5 Chain-In Interface of chain-in

6 Chain-Out Connects to chain-in of another TSU LT

7 V.35 Nx56/64 DTE port

8 Power Switch Used to turn power on or off

9 Power Cord Captive 3-prong power cord

Chapter 1. Introduc tion

1 2 3 4 5 6 7 8 9

NETWORK

TEST JACKS CONTROL

IN OUT MON

CHAIN IN CHAIN OUT

V.35 Nx56/64

ONOFF

220VAC/60HZ

.075A

Figure 1-2. TSU LT Rear Panel

1-4 TSU LT User Manu al 1202060L2-1

TSU LT Features

• A DS1 interface and an Nx56/64 DTE serial interface port.

• Easy configuration capabilities using simplistic menus
displayed in a liquid crystal display (LCD) window oper­ated by a front panel keypad.

• Timing is selectable from the network, from the Nx56/64
DTE port, or internally.

• All ones, all zeros, 511, and 1:8 test patterns.

• Extensive self-testing and monitoring ensures proper op­eration.

• Flexible channel allocation (any starting channel and al­ternate or contiguous).

TSU LT Interfaces

The TSU LT is equipped with four interfaces:

• Network DS1 interface per AT&T 62411

• Nx56/64 serial V.35 high speed interface

• Control input (EIA-232)/Chain port input

•Chain port output

See Figure 1-3 and the following descriptions in this section.

Chapter 1. Introduct ion

PC or Modem

Control

Chain

Input

Output

TSU

NI

Network

Nx56/64

Chain

Chain

Input

Output

TSU

NI

Nx56/64

Figure 1-3. TSU LT Interfaces

1202060L2-1 TSU LT User Man ual 1-5

Network Interface (NI)

The Network Interface (NI) port complies with the applicable
ANSI and AT&T standards:

• Alternate mark inversion (AMI) or binary 8 zero suppres­sion (B8ZS) coding

• Automatic or manual line build-out

• Auto detect or manual settings for D4 or ESF framing

• Network performance monitoring and reporting

• Local and remote test loopbacks

• Extensive self-testing

Nx56/64 Serial Interface

Features of the Nx56/64 serial interface include:

• Data rates: N*56K or N*64K, where N=1 to 24 (DS0s)

• Inverted data (inverted high-level data link control
(HDLC)

•A V.35 interface

• Standard V.35 connectors

• Test loopbacks with 511 pattern generation and check

• Extensive self-testing

Chapter 1. Introduc tion

Control Port Input

Features of the control port input include:

• EIA-232 input from a personal computer (PC) or a mo­dem for control of the TSU LT

• Chain input from another TSU LT

• Up to 9600 baud operation

• Input for PC proxy agent control or for a chained connec­tion

1-6 TSU LT User Manu al 1202060L2-1

Chain Port Output

Features of the chain port output include:

• EIA-232 output to chain control to other TSU LTs

• Up to 9600 baud operation

• Automatic setup; no user input required

Software Manageme nt

Front Panel

The front panel provides complete and easy control of all
items that can be configured through menu-guided options.
The front panel LCD also displays the status of operation and
performance reports for the unit. A complete discussion of
the operation of the front panel is found in Chapter 3,

Operation on page 3-1. The menu options are found in
Chapters 4 through 7.

T-Watch Pro Management Softwar e Progr am

T-Watch Pro is the ADTRAN management software program
that allows the user to control the TSU LT from a PC. It
provides complete control over the configuration of the TSU
LT using a graphic interface. The T-Watch Pro program
displays the same status and performance data as the front
panel LCD. This data is displayed as tables and graphs.

Chapter 1. Introduct ion

The T-Watch Pro program has the following capabilities:

• Interfaces with a modem which permits dialing into a re-

mote TSU LT location to configure the unit or read the
unit’s status or performance.

• The performance data read from the units can be exported

in a file which is compatible with common spread sheet
programs.

1202060L2-1 TSU LT User Man ual 1-7

TSU LT Testing

The TSU LT offers three forms of testing:

• Self-test

• Loopback tests

• Pattern generation and check

Self-test

The self-test checks the integrity of the internal operation of
the electronic components by performing memory tests and
by sending and verifying data test patterns through all
internal interfaces. Although actual user data cannot be
passed during these tests, the self-test can run with the
network and DTE interfaces in place and without disturbing
any external interface.

The self-test automatically executes upon power up. It can
also be commanded from a front panel menu or from the
control port.

In addition to the specified self-tests, background tests are
also run on various parts of the internal electronics. These
run during normal operation to confirm continued correct
functioning. The background tests include:

Chapter 1. Introduc tion

• Monitoring the phase-locked loop for lock.

• Standard background network performance monitoring,
as required by ANSI T1.403 and AT&T 54016 for which
the results are stored.

Loopback Tests

A number of different loopbacks can be invoked locally from
the front panel, by T-Watch commands, or remotely by using
special inband codes. These include AT&T D4 network loop
up/loop down codes and V.54 loop up/loop down codes for
the Nx56K/64K serial interface. Additionally the loopbacks
can be remotely controlled by out-of-band commands via the
T1 ESF facility data link (FDL), or from T-Watch via a modem

1-8 TSU LT User Manu al 1202060L2-1

Chapter 1. Introduct ion

connection. Network and DTE interface loopbacks are
discussed in this section.

Network Loopbacks

There are three types of network loopbacks. See Figure 1-4.

Line Lo opbac k

Loops all of the received data back toward the network. The
transmitted data is the identical line code that was received,
including any bipolar violations or framing errors.

Payload Loopback

Similar to line loopback, except that the framing is extracted
from the received data and then regenerated for the transmit­ted data.

Data Loopback

Loops back all active DS0s and inserts idle code into unoccu­pied DS0s.

Figure 1-4. Network Loopback Tests

1202060L2-1 TSU LT User Man ual 1-9

DTE Interface Loopbacks

The Nx56K/64K serial interface offers a DTE loopback. See
Figure 1-5 on page 1- 10.

DTE Loopback

Loops all data from the DTE back towards the DTE. This
loopback may be initiated by the DTE asserting the local loop­back (LL) input on the connector or by using the front panel
or T-Watch commands. The DTE (or the external test equip­ment) must provide a test pattern to check the DTE interface.

Chapter 1. Introduc tion

Figure 1-5. DTE Interface Loopback

1-10 TSU LT User Manu al 1202060L2-1

Pattern Generation

The TSU LT offers four available test patterns: 511, 1:8, All
Ones, and All Zeros.

Chapter 1. Introduct ion

511

1:8

All Zeros
All Ones

The 511 pattern is generated and checked by the
Nx56K/64K serial interface. It only appears in
the DS0s assigned to the Nx56K/64K port.

When used in conjunction with the payload
loopback at the far end, an end-to-end integrity
check can be made on the DTE ports

The 1:8 is a stress pattern which places the max­imum number of 0s in the transmitted data.
This is always done over all DS0s.

This pattern is used in conjunction with external
test equipment to determine if the T1 line is per­forming acceptably under a stress condition.
Each channel of the T1 has only one bit set.

Generates an all zeros pattern in every channel.
Generates an all ones pattern in every channel.

Bridge/Router Application

A bridge or router can be interfaced to the network by using
the V.35 DTE interface. The bandwidth used is
programmable at Nx56 or Nx64 data rates for T1 or FT1
service. The bandwidth can be selected as contiguous or
alternate. Figure 1-6 shows a simple bridge application.

Figure 1-6. Simple Bridge Application on a T1 or FT1 Circuit

1202060L2-1 TSU LT User Man ual 1-11

Chapter 1. Introduc tion

1-12 TSU LT User Manu al 1202060L2-1

Chapter 2

Installation

INSPECTING FOR DAMAGES

Carefully inspect the TSU LT for any shipping damage. If
damage is suspected, file a claim immediately with the
carrier and then contact ADTRAN Customer Service. If
possible, keep the original shipping container for use in
shipping the TSU LT back for repair or for verification of
damage during shipment.

Items Shipped by ADTRAN

The following items are included in the ADTRAN shipment:

•TSU LT unit

• Line interface cable: an 8-position modular to 8-position

modular

• TSU LT User Manual

• Loopback plug

Items Provided by Customer

•DTE cable(s)

• Cable for supervisory port, if used

6 120206 0L1-1 T S U LT U ser M an u al 2-1

Chapter 2. I n stal l ati o n

Power Connection

Each TSU LT unit is provided with a captive eight-foot power
cord, terminated by a three-prong plug which connects to a
grounded power receptacle.

Power to the TSU LT must be from a grounded 220-230
VAC, 60 Hz power source.

Power Up Testing and Initialization

When shipped from the factory, the TSU LT is set to factory
default conditions. At the first application of power, the unit
automatically executes self-tests followed by an initialization
sequence which sets up the unit.

Self-Test

When Then

A power-up or com­manded self-test oc­curs

The self-test is com­pleted with no failures
detected

a failure is detected It is displayed in the LCD window.

The LCD displays

ING

and the LEDs illuminate sequentially.

The LCD momentarily displays

PASSED

The automatic self-test consists of the fol­lowing tests:

Board level tests

Random access memory (RAM) tests; eras­able programmable read only memory
(EPROM) checksum.
On-board data path. Sending a known test
pattern through an on-board loop.
Unit level tests
Front panel LED verification.
Phase lock loop verify.

.

ADTRAN TSU INITIALIZ-

ALL TESTS

2-2 T S U LT U ser M an u al 6 120206 0L1-1

Chapter 3

Operatio n

OPERATION

The TSU LT can be configured and controlled from either the
local front panel or from a PC using the T-Watch
Management Software Program.

General Menu Operation

The TSU LT uses a multilevel menu structure containing both
menu items and data fields. All menu operations and data
are displayed in the LCD window. The menu items are
numbered and can be viewed by using the

arrows

.

1) STATUS 2) CURR ERR/ALM

1) NETWORK (NI)

MAIN MENU 2) CONFIG 2) UNIT

3) PORT 1) TIME/DAY

3) UTIL 2) SOFTWARE REV

1) NETWORK
TESTS

4) TEST 2) RUN SELFTEST 5) SET PASSCODE

3) PORT TESTS 6) FACT RESTORE

Up

1) NI PERF REPORTS

3) ERR/ALM HIST

3) REINIT UNIT

4) ADDRESS

and

Down

Figure 3-1. TS U LT Main M enus

6 120206 0L2-1 T S U LT U ser M an u al 3-1

Chapter 3. O perati o n

Menu flow is normally depicted from left to right. Arrows on
the lower right of the screen indicate the direction of
additional menu items. At every level of the menu, pressing

Cancel

Pressing
menu.

The opening menu is the access point to all other operations.
There are four main menu items,

TILITY

3)U

functions and submenus to identify and access specific
parameters. Each main item menu contains a complete menu
diagram to identify the location of each operation.

Menu Struct ure

The TSU LT uses hierarchical menus to access its many
features. The main menu level (Figure 3-2) leads to
submenus (see Figure 3-1 on page 3- 1). All menu operations
are displayed in the LCD window. The complete TSU LT
menu diagram is shown in TSU LT Menu Tree on page A-1.

returns the system to the previous menu level.

Cancel

,

repeatedly returns the system to the main

TATUS

4)T

1)S

EST

. Each Main Menu item has several

,

2)C

ONFIGURE

,

Figure 3-2. TSU LT Main Menu Screen

This menu structure diagram is a limited overview. A brief
description of each menu item, presented in menu order, im­mediately follows. A complete menu diagram is shown in
TSU LT Menu Tree on page A-1.

3-2 T S U LT U ser M an u al 6 120206 0L2-1

Four Opening Menu Functions
STATUS

Chapter 3. O perati o n

CONFIG

The

S

TATUS MENU

provides the ability to view the status of
the TSU LT operation. This menu includes the following
items:

NI PERF REPORTS

Used to view the user set of data on the Network Interface
Performance Reports in compliance with ANSI T1.403 and
AT&T document TR54016.

CURR ERR/ALM

Used to view current errors/alarms which are being reported
by the TSU LT.

ERR/ALM HIST

Used to view and clear history errors and alarms.

ONFIGURATION MENU

C

The

is used to set the TSU LT
operational configuration. This menu includes the following
sub-items.

NETWORK (NI)

Used to set all of the parameters associated with the network
interface.

UNIT

Used to control TSU LT control port baud rate and to set up
the dial out function.

PORT

Used to configure the parameters associated with the V.35
port.

UTIL

TILITY MENU

U

The

is used to view and to set system

parameters. This menu includes the following sub-items:

TIME/DATE

Accesses the display and allows the setting of the current
time and date.

6 120206 0L2-1 T S U LT U ser M an u al 3-3

Chapter 3. O perati o n

TEST

SOFTWARE REV

Displays the version number of the current software revision
level. This information is required when requesting
assistance from ADTRAN Customer Service or when
updates are needed.

REINIT UNIT

Used to reinitialize the unit. This menu item is not used to
restore the factory default settings for all parameters.

ADDRESS

Used to view and change the current

Unit Address

used for

control port access.

SET PASSCODE

Allows a passcode to be set.

FACT RESTORE

Restores factory default settings for all unit parameters.

EST MENU

T

The

is used to initiate different types of tests of
the unit and to view test results. Test results are displayed in
the LCD window. The menu contains three sub-items.

Test execution disrupts some normal operations. See individ­ual menu items concerning tests before executing.

NETWORK TESTS

Used to control the activation of loopbacks and the initiation
of data test patterns.

RUN SELF TEST

Used to execute an internal self-test.

PORT TESTS

Used for the testing of the DTE port.

3-4 T S U LT U ser M an u al 6 120206 0L2-1

Menu Features

Data Field

Chapter 3. O perati o n

A menu item followed by a
data field.

Displa y Field

A menu field followed by

Arrows

Menus that display small
right corner indicate there are more menu items than are
viewable on a two-line LCD. The additional menu items are
accessed with the
items are also available by using the appropriate menu
number.)

Example Menu Operations

To select a menu item...

Step Action

1

Use the
desired menu item (in this example
Figure 3-3

2

Place the cursor on the

colon (:)

alarm

Up

Up or Down Arrows

Up

Down arrows

and

identifies an editable

error

or

Down Arrows

or

information.

in the lower

. (Undisplayed menu

to place the cursor on the

CONFIG

number 2

and press

). See

Enter

.

The unit responds by displaying the first two available sub­menu fields. The cursor is on the first field. If there are
more than two menu fields, a

Down arrow

is visible on the

lower right corner. See Figure 3-4

6 120206 0L2-1 T S U LT U ser M an u al 3-5

Chapter 3. O perati o n

Figure 3-3. C ursor on Menu Item.

Figure 3-4. Submenu Fields

To select a submenu item

Step Action

1

Use the same operation used to select an opening
menu item.

2

Use the

Up

desired menu item. In this example

Down Arrows

and

to place the cursor on the

NETWORK (NI)

.

The unit responds by displaying the first two available data
field items. The cursor is on the number of the first item.
When there are more than two data field items for the select­ed submenu, a

Down Arrow

is visible on the lower right cor-

ner.

3-6 T S U LT U ser M an u al 6 120206 0L2-1

Chapter 3. O perati o n

To Set the Data Field

Data fields that are available for editing are preceded by a

(:)

colon

.

Step Action

Enter

1 Press

while the cursor is located on the submenu
item number . The cursor moves to the data field, (to
the right of the submenu item name).

You can use the

Up

and

Down Arrows

to scan the available
value settings which display in the data field position one at
a time.

2 When the desired value is in the data field position,

Enter

press

to set the value.

The unit is set for the value shown in the data field and the
cursor moves back to the submenu item position indicating
the operation is complete. You can select another submenu
field or press

Cancel

is available any time during the operation. If used

prior to pressing

Enter

Cancel

to return to the submenu.

after making a data change, the orig-

inal data value is restored and the cursor returns to the sub­menu field.

To View Display-Only Data Fields
An example of a D

ISPLAY ONLY

data field is found by

selecting the following menu choices:

Step Action

1 Select

STATUS

from the

MAIN MENU

.

2 Select submenu CURR ERR/ALM.

LOSS OF SIGNAL INACTIVE/ACTIVE

is displayed giv-

ing the current state of the alarm.

To Exit Any Menu Fie l d Operation or Di spl ay

Cancel

Press

as many times as required to return to the

desired menu level.

6 120206 0L2-1 T S U LT U ser M an u al 3-7

Chapter 3. O perati o n

Front Panel

The TSU LT front panel is shown in Figure 3-5. Unit features
are identified by call-outs.

ENTER

1 2 3 4

PWR

TD

5 6 7 8

ERR

RD RS

ALM

TEST

CS

TSU LT

10 12

CANCEL

9

11 13

Figure 3-5. Front Panel Layout

Item Displays Function

1 PWR LED ON when power is received by TSU LT.
2 ERR LED ON when errored events have happened in the last second.

3. ALM LED ON when an alarm condition exists.
4 TEST LED ON when unit is in test mode.
5 TD LED ON when DTE data i s being received.
6 RD LED ON when DTE data is being received.
7 RS LED ON when request to send (RTS) active from DTE.
8 CS LED ON when TSU LT has clear to send (CTS) active toward DTE.
9 LCD A 2X16 L CD wind ow tha t dis play s menu i tems use d in co nfi gurat ion

and di splays information useful in monit oring t he unit.

Operation Keys:

10 Up/Down Keyboard arrows used to travel up/down menu trees.

11 Enter U sed to choose paths and make selecti ons.
12 Cancel Used to exit selections or menu tree branches.

Arrows increase/decrease numeric values and scroll through selec­tions.

3-8 T S U LT U ser M an u al 6 120206 0L2-1

Chapter 4

Status Menu

STATUS

TATUS MENU

The S
status of the TSU LT operation. See Figure 4-1.

NI PERF RPTS %AV

CURR ERR/ALM OUT OF FRAME

STATUS YELLOW ALARM

ERR/ALM HIST RED ALARM

branch provides the ability to view the

RESET PERF CNTRS
SES
ES

%EF LOSS OF SIGNAL
CVs AIS ALARM

CLEAR HISTORY RED ALARM
LOSS OF SIGNAL CODE VIOLATIONS
AIS ALARM BIPLOAR VIOL
OUT OF FRAME FRAME BIT ERRORS
YELLOW ALARM PLL ALARM

CODE VIOLATIONS
BIPLOAR VIOLATIONS
FRAME BIT ERRORS
PLL ALARM

Figure 4-1. S t at us M e nu

61202060L2-1 TSU LT User Man ual 4-1

Chapter 4. Status Menu

NI PERF RPTS

The Network Interface Performance Reports displays the
user copy of the performance data. The TSU LT maintains
this performance data on the network in compliance with
ANSI T1.403 and AT&T document TR54016. The data
displayed is data accumulated over the last 15 minutes and
over the last 24 hours.

These fields cannot be edited, only cleared as previously
discussed. Only the user copy of performance data is
cleared. See Figure 4-2. Continue with standard operating
procedures to exit the display.

Figure 4-2. Severely Errored Seconds Screen

SES

Number of severely errored seconds

ES

Number of errored seconds

%AV

Percentage of available seconds

%EF

Percentage of error free seconds

CVs

Number of code violations

4-2 TSU LT User Manual 61202060L2-1

Since only the user’s copy of performance data is cleared by
the TSU LT, the data displayed here might be different from
the data being sent to the network as performance report mes­sage (PRM) data.

CURR ERR/ALM

The C
currently Active/Inactive errors and alarms (see Figure 4-3).

URRENT ERROR/ALARM MENU

Chapter 4. Status Menu

is used for viewing

Figure 4-3. Los s of Signal (Current Er rors/Alarm s) Screens

The

Up

Down Arrows

and

are used to access the complete

display of the errors/alarms that are currently active.

61202060L2-1 TSU LT User Manual 4-3

Chapter 4. Status Menu

Alarms a nd E rrors

The following are alarms and errors which can be seen.

Loss of Signal

No pulses received at NI

AIS Alarm

Unframed All-Ones received at NI

Out of Frame

No framing pattern sync at NI

Yellow Alarm

Receiving yellow alarm pattern from NI

Red Alarm

Loss of signal/out of frame (LOS/OOF) causing red alarm at
NI

Code Violations

Cyclic redundancy check (CRC) errors in ESF, or bipolar
violations (BPVs) in Superframe Format (SF) were received at
NI

Bipolar Violations

BPVs in SF or ESF

Bipolar Violations

BPV's in SF or ESF

Bit Errors

Frame Bits received incorrectly at NI.

PLL Alarm

Unable to sync up to selected clock

4-4 TSU LT User Manual 61202060L2-1

ERR/ALM Hist

The E
of errors and alarms. If an alarm has occurred since the last

CLEAR HISTORY

has not occurred then the menu is inactive (see Figure 4-4).

These conditions are the same as for the CURR ERR/ALM
submenu except that these are history Alarm/Errors instead
of current Alarm/Errors.

RROR/ALARM HISTORY

selection, the menu is active. If the condition

Chapter 4. Status Menu

menu is used for viewing history

Figure 4-4. Clear History Screen

61202060L2-1 TSU LT User Manual 4-5

Chapter 4. Status Menu

4-6 TSU LT User Manual 61202060L2-1

Chapter 5 Configuration Menu

CONFIG

ONFIGURATION MENU

The

C

operational configuration, including all of the network
interface parameters, and the allocation of the DS0s and the
port parameters. See Figure 5-1.

1) NETWORK (NI) 6) BIT STUFFING

2) UNIT

2) CONFIG 2) OUTPUT

3) PORT 5) # OF CHAN

is used to set the TSU LT

1) FORMAT

2) CO DE

3) YEL ALRM

4) XMIT PRM

5) CLOCK SOURCE

7) SET LBO

8) RX SENSITIVITY 1) POSITION

1) CNTRL PORT 3) DATA RATE

2) ALARMS 1) TRAPS

1) RATE 56/64

2) CHANNELS

3) DTE TX CLK

4) START CHAN

6) DATA

7) CTS

8) DCD

9) DSR

10) INBAND

2) MODEM INIT

3) TEL NUM

Figure 5-1. C onfi guration Menu

6 120206 0L2-1 T S U LT U ser M an u al 5 -1

Chapter 5. Configuration M enu

Network (NI)

This menu is used to access the configuration of parameters
associated with the network interface in the TSU LT. There
are eight submenu items that include setting the format, the
line build-out (LBO), and the clock source. See Figure 5-2.

The fields and parameters available are:

FORMAT

Sets the frame format for the NI.
Choices: D4, ESF, AUTO

Figure 5-2. Ne twor k Submenu

D4 is equivalent to Superframe Format (SF).

CODE

Sets the line code for the NI.
Choices: AMI, B8ZS

YEL ALRM

Enables and disables the transmitting of yellow alarms.
Choices: ENA (enable), DISA (disable)

5 -2 T S U LT U ser M an u al 6 120206 0L2-1

XMIT ALRM

CLOCK SOURCE

Chapter 5. Configuration M enu

Enables and disables the transmitting of performance report
messages (PRM) data on the facility data link (FDL). The
PRM data continues to be collected even if XMIT PRM is
disabled (possible only with ESF Format).
Choices: ENA, DISA

Selects the clock source for transmission toward the network
from the NI.
Choices: NETWORK, DTE, INTERNAL

TSU LT Clock Sources

The TSU LT is operable from various clock sources
permitting it to perform properly in many different
applications. The network interface clocking options are set
by using the Network Configuration menu options. Three
clock source options are available:

• Network timing

•DTE timing

• Internal timing

The clocking option selected always designates the clock
source for transmission. Clocking necessary for receiving
data is always recovered from incoming data.

6 120206 0L2-1 T S U LT U ser M an u al 5 -3

Chapter 5. Configuration M enu

Network Timing

The network is the source of timing. The received data
clocking is looped back to the network where it is used to
determine the transmission timing. This option is also
referred to as
derived from the received clock. See Figure 5-3.

DTE Timing

The DTE is the source of timing. The TSU LT uses the
incoming DTE clock to determine the transmission timing.
This is typically used in applications such as limited distance
line drivers, where it is necessary to have the DTE as the
primary clock source. See Figure 5-4.

looped timed

as the transmission clock is

Figure 5-3. Net work Ti m ed Clock Source

Figure 5-4. DTE Clock Source

5 -4 T S U LT U ser M an u al 6 120206 0L2-1

BIT STUFFING

Chapter 5. Configuration M enu

Internal Timing

The TSU LT is the source of timing. The TSU LT is configured
to use its own internal oscillator as the source of timing.
Applications include private line driver circuits where one
end is set to network and the other to internal.
See Figure 5-5.

Figure 5-5. Internal Clock Source

When enabled, Bit Stuffing causes the TSU LT to monitor for
ones (1s) density violations and insert a one (1) when needed
to maintain ones at 12.5 percent. This option should be
disabled if B8ZS is enabled, if Nx56 is selected, or if alternate
channels are being used. All of these other options already
ensure pulse density requirements.
Choices: ENA, DISA

SET LBO

Selects the line build-out for the network interface. In

AUTO

mode, the TSU LT will set the LBO based on the strength of
the receive signal.
Choices: 0dB, AUTO, -22.5dB, -7.5dB, -15dB

RX SENSITIVIT Y

Selects the desired receiver sensitivity setting. The factory
default is

NORMAL

which is adequate for most applications.
The extended setting should be used only in applications
where the

6 120206 0L2-1 T S U LT U ser M an u al 5 -5

NORMAL

setting will not suffice.

Chapter 5. Configuration M enu

Unit

The

U

options.

NIT SUBMENU

is used to change control port and alarm

Follow standard operating procedure to access the

M

CNTRL PORT

Used to set the unit up as the master or slave on a chain of
units, and to initialize a modem and the control port data
rate.

POSI TION of TSU LT

Determines if this TSU LT is at the head of a chain of units
(directly connected to the modem or PC). The head of the
chain is referred to as the master unit. Units down the chain
are referred to as slaves or a slave unit. The setting of the

Position Selection

which case the head unit should be
cases, select
modem.)
Choices: MASTER, SLAVE

ENU

items. See Figure 5-6.

is necessary only when using a modem, in

SLAVE

NIT

U

Figure 5-6. Configuration Submenu

MASTER

. For all other

. (The master is in charge of control of the

5 -6 T S U LT U ser M an u al 6 120206 0L2-1

MODEM INIT

DATA RATE

ALARMS

TRAPS

Chapter 5. Configuration M enu

The TSU LT is capable of initializing a modem. This menu
selection is used to perform this initialization and should be
selected only when the TSU LT is serving as the

MASTER

unit. Prior to modem initialization it should be physically
connected to the TSU LT and the power turned on. At this
point, an industry-standard AT command string is used to
initialize the modem. The string is also used following future
power-up sequences.
Choices: ENA, DISA

Selects the data rate for the control port. This should be
consistent with all units on a chain and with the modem
and/or PC/Proxy Agent serial port.
Choices: 1200, 2400, 9600

Used to initialize the method by which the control port
handles alarm conditions.

Determines if alarm conditions should automatically send
alarm messages (traps) to the controlling PC/Proxy Agent.
The setting is for this unit, or for slaves if this unit is a master.
Choices: ENA, DISA

For applications where the

AUTO I

NBAND SELECTION

is not
acceptable, Traps should only be enabled with the Inband
selection set to

On

or

Off

.

OUTPUT

Selects whether the alarm traps (if enabled) are sent directly,
or if the telephone number stored in the TSU LT should be
dialed first (industry-standard AT dial command sent to
modem).
Choices: DIRECT, DIAL

6 120206 0L2-1 T S U LT U ser M an u al 5 -7

Chapter 5. Configuration M enu

TEL NUM

This is the telephone number which is dialed to obtain alarm
traps. The string can be up to 20 characters in length and is
terminated with a semicolon

(:)

character is used to represent a pause in the dial string.

For example, for number 9:5551212; dial 9, pause
momentarily and then dial 5551212. This pause could be
necessary to access an outside line, such as a PBX.

When editing a specific character, the arrows are used to
scroll from 0 to 9, then colon
telephone number is entered into the TSU LT only upon
pressing
Choices: 20 digits (0-9, :, and ;)

Enter

after typing the semicolon.

(;)

as the last character. A colon

(:)

and semicolon

(;)

. The new

Port

RATE 56/64

CHANNELS

The typed digits are accepted only after pressing

The menu item

PORT

is used to select and then to configure

Enter

.

the parameters associated with the V.35.

This sets the base rate of the interface. The actual data rate
depends on the number of DS0s assigned to the Nx port. The
DTE data rate vs. the number of DS0s appears in the
appendix DTE Data Rate Chart.
Choices: 56K, 64K

This sets the unit to use

ALTERNATE

CONTIGUOUS

or

channels

in the T1 data stream. If more than 12 channels are used, then

CONTIGUOUS

must be used. If not, then

ALTERNATE

channels
may be used to meet pulse density requirements (only
necessary for Nx 64 without B8ZS). If other than a private

5 -8 T S U LT U ser M an u al 6 120206 0L2-1

DTE TX CLK

START CHAN

Chapter 5. Configuration M enu

network, the carrier must be notified of this choice.
Choices: ALT (alternate), CONT (contiguous)

Controls the clock used by the TSU LT to accept the transmit
(TX) data from the DTE. Most applications will allow for this
to be set to

INTERNAL

phase shift in the data) the clock can be selected as

. If the interface cable is long (causing a

INT/INV

(Internal/Inverted). This switches the phase of the clock
which should compensate for a long cable. The factory
default setting for this option is

setting will allow the TSU LT to automatically detect the

CLK

AUTO

. The

AUTO DTE TX

delay from the DTE device to the TSU LT and set the proper
phase of the clock. This feature will automatically select
between the

INTERNAL

and

INT-INV

settings. If the DTE

provides a clock with TX data, the clock selection is set to

EXTERNAL

. The TSU LT will depend on an externally
supplied clock to accept the TX data.
Choices: INTERNAL, INT-INV, EXTERNAL, AUTO

Used to select the channel in which the T1 stream will start.
The setting must be consistent with carrier if using a public
network.
Choices: 01 through 24

# OF CHAN

Used to select the number of DS0s (channels) that are to be
used. The corresponding DTE rate will be this number times
56K or 64K, depending on Port Option number 1.
Choices: 01 through 24

DA T A

Used to control the inverting of the DTE data. This inversion
can be useful when operating with an HDLC protocol. Often
used as a means to ensure ones (1s) density. TSU LTs on both
ends must have identical option settings.
Choices: NORMAL, INVERT

6 120206 0L2-1 T S U LT U ser M an u al 5 -9

Chapter 5. Configuration M enu

CTS

Used to control characteristics of CTS.
Choices: NORMAL (see Table 5-1), FORCE ON

DCD

Data Carrier Detect - Indicates to the DTE when a valid
signal is being received at the Network Interface.
Choices: NORMAL (see Table 5-1), FORCE ON

DSR

Data Set Ready - This signal indicates to the DTE when the
DCE is turned

and ready for operations.

ON

Choices: NORMAL (see Table 5-1) or FORCE ON

Table 5-1. Normal Mode Operation

NORMAL MODE OPERATION
Conditions which cause the Port Control Signals to be deactivated

V.54

SIGNAL RTS

CTS Follows OFF OFF OFF OFF OFF OFF
DCD — — — OFF — OFF OFF
DSR — OFF OFF OFF OFF OFF —
Where “ — “ = don’t care

LOOP

BK

511 TST ONSELF-TEST

ACTIVE

NETWK TEST

ACTIVE

NO DS0

MAPPED

NETWORK

ALARM

INBAND

Inband Configuration Channel - Used to enable/disable an
8 kbps remote configuration channel. See Figure 5-7 on page
5- 11). When this option is set to

, the first DS0 occupied

ON

operates in 56K mode and the DTE clock rate is reduced by 8
kbps. The TSU LT uses this 8 kbps channel to send and
receive configuration data across a T1 span. As shown in
Figure 5-7 on page 5- 11, this allows the PC connected to the
chain-in port on TSU LT A to monitor/configure both TSU
LT A and B. This feature is useful when FDL connectivity is
not available across the T1 span.

5 -10 T S U LT U ser M an u al 6 120206 0L2-1

Chapter 5. Configuration M enu

The 8 kbps channel is only taken out of the first DS0. If two
64K DS0s are mapped, the DTE rate would be 120 kbps
instead of 128 kbps. This menu option can also be set to

which activates the Inband Channel only when

AUTO

commands are sent from T-Watch to the remote unit (TSU LT
B in Figure 5-7). If no T-Watch activity is detected for 10
minutes, the Inband Channel is deactivated.

Figure 5-7. Inband Remo t e Co nfi guration

61202060L2-1 TSU LT User M anual 5-11

Chapter 5. Configuration M enu

5 -12 T S U LT U ser M an u al 6 120206 0L2-1

Chapter 6 Utility Menu

UTIL

TILITY MENU

The

U

parameters. See Figure 6-1. This includes setting the time
and date and resetting all parameters to factory values or to
re-initialize the unit. This menu is also used to view the
unit’s software revision and the unit ID setting.

1) TIME/DAT E DATE: MM/DD/ YY

2) SOFTWARE REV Displays current

UTIL 3) REINIT UNIT

4) ADDRESS

is used to view and to set system

TIME: HH:MM:SS

software revision

5) SET PASSCODE

(Returns all configurations to factory

6) FACT RESTORE

61202060L2-1 TSU LT User Manual 6-1

settings)

Figure 6-1. Utility Menu

Chapter 6. Utility Menu

Time/Date

Time/Date

is used to view or to edit the current time and date.
The time and date are maintained during power off
conditions (see Figure 6-2).

Figure 6-2. Time/Date Screen

Table 6-1. Editing the Time/Date

To .... Do this ...

Record the entry and move to
the next editing position.

Move to the next editing posi­tion or field

Enter

Press
change)

Enter

Press
changes at the cursor.

(after any numeric

without making any

Press the

End the editing process Press

up

Cancel

down arrow keys

and

Software Rev

Use the

OFTWARE REVISION

S

of the current software revision level. This information is
required when requesting assistance from ADTRAN
Customer Service or when updates are needed.

6-2 TSU LT User Manual 61202060L2-1

submenu to access the display

Reinit Unit

Chapter 6. Utility Menu

R

menu item is not used to restore the factory default settings
for all parameters.

Address

A

Unit identification numbers must be between 000 and 256.
See Figure 6-3.

Set Passcode

Set Passcode

deleted.

EINIT UNIT

DDRESS

is used to access the current

submenu is used to reinitialize the unit. This

NIT ADDRESS

U

Figure 6-3. Address Screen

allows a passcode to be added, changed, or

setting.

Fact Restore

ACTORY RESTORE

The

F

factory default setting for all unit parameters. This restores
all parameters to the factory settings.

61202060L2-1 TSU LT User Manual 6-3

submenu is used to restore the

Chapter 6. Utility Menu

6-4 TSU LT User Manual 61202060L2-1

Chapter 7 Test Menu

TEST

EST MENU

The

T

the unit and to view test results (see Figure 7-1). Test results
are displayed in the LCD window. The menu contains three
sub-items.

Test execution will disrupt some of the normal operation. See in­dividual menu items concerning tests before executing.

is used to initiate different types of tests of

.

1) LOCAL LOOPBK LINE ON NO LOOPBACK

2) REMOTE LOOP BK ANSI FDL LLB

NETWORK TESTS AT&T INBAND LLB

3) TEST PATTERN NO PATTERN ANSI FDL PLB

TEST 511 ACT. DS0s

4) CLR ERRS (and error di splay)

5) INS ERT 511 ERRRO RS

RUN SELFTEST (Displays results)

PORT TESTS 1) DTE LOOPBK: OFF

2) DATA LOOPBK: OFF

NO LOOPBACK

PAYLOAD ON V.54 INBAND PLB

1:8 ALL DS0 s AT&T PLB

ALL ZEROS
ALL ONES

Figure 7-1. Test Menu

61202060L2-1 TSU LT User Manual 7-1

Chapter 7. Test Menu

Network Tests

Network tests are used to control the activation of loopbacks
and the initiation of data test patterns.

The network tests are run on the network interface (NI).
Three different test configurations can be selected to
determine the type of loopback and the pattern to run. Test
results are displayed in the LCD window. See Figure 7-2.

LOCAL LOOPBCK

Figure 7-2. Local Loopback Screen

There are three available choices for setting the local
loopback:

No Loopback

Deactivates the loopback.

Line On

Activates the line loopback.

Payload On

Activates the payload loopback.

7-2 TSU LT User Manual 61202060L2-1

REMOTE LOOPBCK

Chapter 7. Test Menu

Activates the same loopbacks as the

LOCAL

but at the far end.
This uses either the inband loopup code as specified by
AT&T 62411 for line loopback (ATT In-Band LLB), or the FDL
as specified in ANSI T1.403 for payload and line loopback
codes. An FDL (formerly TABS) maintenance message
corresponding to AT&T TR54016 can be used for payload
loopback as well.

No Loopback

Deactivates the loopback.

V. 54 Inban d PLB

Indicates inband transmission of V.54 loopup pattern in
channels occupied by DTE data only. This choice should be
used for public fractional network.

AT&T Inband LLB

Activates the line loopback using inband code.

AT&T Inband LLB

Activates the line loopback using inband code.

ANSI FDL LLB

Initiates the transmission of an FDL line loop-up code toward
the far end.

AT&T PLB

Indicates the transmission of the PLB maintenance on the
FDL.

Only V.54 loopbacks can be used with fractional T1 since the full
T1 stream including the FDL is not transported to the far end (un­less it is a private network).

61202060L2-1 TSU LT User Manual 7-3

Chapter 7. Test Menu

TEST PATTERN

CLR ERRORS

Sets the pattern for the test and initiates the transmission of
the pattern. There are four patterns available. The test is
terminated by selecting

NO PATTERN

.

1:8 ALL DS0s

Generates a 1 in 8 pattern in all DS0s.

511 Active DS0s

Generates a 511 test pattern and inserts the pattern into
currently active channels.

All Zeros

Generates an all zero's pattern in every channel.

All Ones

Generates an all one’s pattern in every channel.

CLR ERRORS

1. It clears out the 511 error total when you press

has two functions.

Enter

.

2. It displays a total of the 511 errors. If 511 errors are being
received, the display is updated accordingly. See Figure
7-3.

Figure 7-3. Clear Errors Screen

This menu function is very useful for testing end-to-end
integrity of the network. First loop up the far end TSU LT.
Then send a 511 pattern from the local TSU LT. The

ERRORS

7-4 TSU LT User Manual 61202060L2-1

screen can then be used to determine if the link is

CLR

functioning properly by verifying that no errors are being
counted.

INSERT 511 ERRORS

Chapter 7. Test Menu

Run Self-test

When running a 511 pattern test, press the

Enter

key to insert

an error into the 511 pattern.

This menu selection is used to execute an internal self-test.
This is the same self-test that is performed automatically at
power up. The results of the self-tests are displayed in the
LCD. Upon invoking the command the LCD displays

INITIALIZING

and test failures are displayed in the LCD
window (see Figure 7-4). To initialize a self test, proceed
with the following steps:

Step Action

1 RAM tests; EPROM checksum
2 On board data path; sending a known test pattern

through an on-board loop

3 Front panel LED verification
4 Phase lock loop verify

If a failure is detected, note the failure number and contact
ADTRAN Technical Support.

Executing self-test disrupts normal data flow and prevents remote
communication until the self-test is completed (approximately five
seconds)

61202060L2-1 TSU LT User Manual 7-5

Chapter 7. Test Menu

Port Tests

Figure 7-4. Self Test Results Screen

Port Tests are used to control the activation of a DTE
loopback. This test loops data received at the V.35 interface
back towards the DTE. See Figure 7-5).

Figure 7-5. Loopback Setting Screen

7-6 TSU LT User Manual 61202060L2-1

Chapter 8 Exam ple Ope rat ions

TESTING EXAMPLES

Before using the TSU LT to pass data, it is recommended to
run tests on the circuit. Testing consists of sending a test
pattern from end-to-end and checking for errors in the
pattern. There are two types of tests used to accomplish this:

• Send the pattern from one end and loop back the far end.

• Send the pattern from both ends and check at both ends.

Far End Looped Bac k Test

Two types of tests can be executed with the far end looped.
The first is a check of the network and the network interfaces
at both ends (511). The second is a check of the DTE port.

Network Interface Tes t

The Network Interface Test can be run with any channel
setup because the 511 pattern is always sent in the occupied
channels.

Step Action

TEST

1 Select
2 Use the

TEST

on

3 Press

Result: The first two
See Figure 8-2.

61202060L2-1 TSU LT User Manual 8-1

Up

.

Enter

from the

and

to select

MAIN MENU

Down arrows

TEST

submenu items display.

. See Figure 8-1.

to place the cursor

Chapter 8. Example Operations

Figure 8-1. Main Menu with TEST Selected

Figure 8-2. Test Menu with NETWORK TESTS Selected

Step Action

1 Use the

NETWORK TESTS

on

2 Press
3 Press

Enter
Enter

Up

Down arrows

and

.

to select.
again to enter the

to place the cursor

NETWORK TEST

menu.

Result: Beginning display of the submenu items.
Each menu item can be selected with the

Down arrows

8-2 TSU LT User Manual 61202060L2-1

Up

and

Chapter 8. Example Operations

OCAL LOOPBACK TEST MENU

The

L

is shown in Figure 8-3.

Figure 8-3. Local Loopback Test Menu

The menu offers the following options:

•Line On

• Payload On

• No Loopback
The menu options for the

EMOTE LOOPBACK TEST MENU

R

shown in Figure 8-4 on page 8- 3.

are

Figure 8-4 . Rem ot e Loopback Test Menu

The menu options for the

EMOTE LOOPBACK

R

are:

• No Loopback

• V.54 Inband PLB

• ANSI FDL LLB

• AT&T Inband LLB

•ANSI FDL PLB

• AT&T FDL PLB

61202060L2-1 TSU LT User Manual 8-3

Chapter 8. Example Operations

The Test Pattern screen is shown in Figure 8-5.

Figure 8-5. Test Pattern Screen

The menu options available for the

• No Pattern

• 1:8 all DS0s

• 511 Active DS0s

• All Zeros

• All Ones

Step Action

1 Use the

on

REMOTE LOOPBK

2 Press

Enter

3 Use the

Up

Up

Down arrows

and

to select

Down arrows

and
the data field. (Must use V.54 Inband PLB for
Fractional T1 on Public Networks.)

back

Enter

.

to activate a

4 Press

Results: This initiates the transmission of a loopup
code toward the far end.

TEST PATTERN SCREEN

to place the cursor

to set

PAYLOAD

Remote Payload Loop-

are:

in

8-4 TSU LT User Manual 61202060L2-1

When completed, do the following:

Step Action

1 Use the

TEST PATTERN

select

2 Press

Enter

Up

Down arrows

and

.

to activate the

menu

3 Use the

S

DS0

4 Press

Enter

Up

Down arrows

and

to activate the selection.

Results: The TSU LT always checks for 511 errors.
The results of this check are shown under submenu
item 4 (see Figure 8-6).

Chapter 8. Example Operations

or the

EST PATTERN

T

to select

number 3

sub-

511 ACT.

to

Figure 8-6. Clear Errors Screen

When through viewing the results, do the following:

Step Action

Cancel

1 Press

TEST PATTERN

2 Select

to return to submenu item

.

NO PATTERN

to terminate the test and the

511 pattern generation.

Result: The far end remains in loopback until the
network
under submenu item

REMOTE LOOPBK

REMOTE LOOPBK

is set to

LOOPBACK

NO

.

61202060L2-1 TSU LT User Manual 8-5

Chapter 8. Example Operations

8-6 TSU LT User Manual 61202060L2-1

Appen d i x A TSU LT Menu Tree

The complete menu tree for the TSU LT is shown in Figures
A-1 and A-2.

NI PERF RPTS RESET PER F CN TRS

LOSS OF SIGNAL ES
AIS ALARM %AV
OUT OF FRAME %EF

CURR ERR/ALM YEL ALARM CLEAR HISTORY CVs

RED ALARM LOSS OF SIGNAL

STATUS CODE VIOL AT IO NS AIS ALARM

BIPOLAR VIOL OUT OF FRAME
FRAME BIT ERRO RS YELLOW ALARM
PLL ALARM RED AL ARM

CODE VIOL AT IO NS

ERR ALM HIST BIPOLAR VIOLATIONS FORMAT

MAIN MENU FRAME BIT ERRORS CODE

PLL ALARM YEL ALRM

NETWORK (NI) CLOCK SOURCE

POSITION SET LBO

CONFIG CNTRL PORT MODEM INIT RX SENSITIVITY

DATA RATE

UNIT

TRAPS RATE 56/64

ALARMS OUTPUT CHANNELS

TEL NUM DTE TX CLOCK

PORT START CHAN

SES

XMIT PRM

BIT STUFFING

# OF CHAN
DATA
CTS
DCD
DSR
INBAND

Figure A-1. TSU LT Menu Tree (Status and C onfig)

61202060L1-1 TSU LT User Manual A-1

Appendix A. TSU LT Menu Tree

TIME/DATE DATE: MM/DD/YY

TIME: HH:MM:SS

SOFTWAR E REV Displays current software rev isi on

UTIL REINIT UNIT

ADDRESS
SET PASSCODE
FACT RE STORE Returns all configur ations t o factory settings

NO LOOPBACK

MAIN MENU LOCAL LOOPBK LINE ON

PAYLOAD ON

REMOTE LOOPBK V.24 INBAND PLB

NETWORK TESTS ANSI FDL LLB

NO PATTERN AT&T INBAND LLB

TEST PATTERN 1 :8 ALL DS0S ANSI FDL PBL

511 ACT. DS0S AT&T PBL
ALL ZEROS

TEST ALL ONES

CLR ERRS (and error display)
INSERT 511 ERRORS

RUN SELF-TEST (Displays Results)

PORT TESTS DTE LOOPBK: OFF

DATA LOOPBK: OFF

NO LOOPBACK

Figure A-2 . TSU LT Menu Tree (Util and Test)

A-2 TSU LT User Manual 61202060L1-1

Appen d i x B DT E Data Rate Chart

The DTE data rate chart is shown in Table B-1.

Table B-1. DTE Data Rate vs. DS0s

# OF DS0s (N) DTE RATE=56K DTE RATE=64K

N=1 56K 64K
N=2 112K 128K
N=3 168K 192K
N=4 224K 256K
N=5 280K 320K
N=6 336K 384K
N=7 392K 448K
N=8 448K 512K

N=9 504K 576K
N=10 560K 640K
N=11 616K 704K
N=12 672K 768K
N=13 728K 832K
N=14 784K 896K
N=15 840K 960K
N=16 896K 1024K
N=17 952K 1088K
N=18 1008K 1152K
N=19 1064K 1216K
N=20 1120K 1280K
N=21 1176K 1344K
N=22 1232K 1408K
N=23 1288K 1472K
N=24 1344K 1536K

61202060L2-1 TSU LT User Manual B-1

Appendix B. DTE Data Rate Chart

B-2 TSU LT User Manual 61202060L2-1

Appen d i x C Pino uts

WIRING
Network

On the rear panel, the TSU LT has an eight-position modular
jack labeled N
to the network. See Table C-1 for the network connector pin
assignments.

ETWORK

. This connector is used for connecting

Connector Type
Product Number

Pin Name Description

1 R1 RXDATA-RING Receive data from the network
2 T1 RXDATA-TIP —
3 UNUSED —
4 R TXDA TA-RING Send data towards the network
5 T TDXD ATA-TIP —
6, 7, 8 UNUSED —

61202060L2-1 TSU LT User Manual C-1

(USOC) RJ-48C
AMP# 555164-2

Table C-1. Network Pin Assignments

Control-In/Chain-In

Use this as an EIA-232 port for connection to a computer or
modem (chain-in) or another TSU (chain-out). See Table C-2
for the pin assignment for this connector.

Appendix C. Pinouts

Connector Type
Product Number

Table C-2. Cont rol-In /Ch a i n- In Pin A ss i gn m e nts

Pin Name Description

1 GND Ground connected to unit chassis
2 UNUSED —
3 RXDATA Data received by the TSU
4 UNUSED —
5 TXDATA Data transmitted by the TSU
6 UNUSED —
7 RI Ring indicate from modem
8 UNUSED —

RJ-48
AMP# 555164-2

C-2 TSU LT User Manual 61202060L2-1

Chain-Out

Appendix C. Pinouts

Use this to connect to another TSU ACE chain-in connector.
The pinout for this connector is shown in Table C-3.

Connector Type
Product Number

Pin Name Description

1 GND Ground-connected to unit chassis.

2 UNUSED —
3 TXDATA Data transmitted to chained units

4 UNUSED —
5 RXDATA Data received from chained units

6, 7, 8 UNUSED —

RJ-48
AMP# 555164-2

Table C-3. Chain-Out Pin Assignments

Connect to GND of next unit (pin 1)

by the TSU. Connect to RX DATA
of the next unit (chain-in pin 3)

by the TSU. Connect to TX DATA
of the next unit (chain-in pin 3)

612020 60 L2 - 1 TSU LT User Manual C-3

Nx56K/64K DTE (V.35)

The pinout for this connector is shown in Table C-4.

Appendix C. Pinouts

Connector Type
Product Number

Pin CCITT Description

A 101 Protective ground (PG)
B 102 Signal ground (SG)
C 105 Request to send (RTS) from DTE
D 106 Clear to send (CTS) to DTE
E 107 Data set ready (DSR) to DTE
F 109 Received line signal detector (DCD) to

H — Data terminal ready (DTR) from DTE
J — Ri n g in dica tor (RI)
L — Local loopback (LL)
N — Remote loopback (RL)
R 104 Received data (RD-A) to DTE
T 104 Received data (RD-B) to DTE
V 115 RX clock (RC-A) to DTE
X 115 RX clock (RC-B) to DTE
P 103 Transmitted data (TD-A) from DTE
S 103 Transmitted data (TD-B) from DTE
Y 1 14 TX clock (T C - A)
AA 114 TX clock (TC-B)
U 113 External TX clock (ETC-A) from DTE
W 113 External TX clock (ETC-B) from DTE
NN&K — T est mode (TM) to DTE

V.35
AMP# 92-4883-3-1

Table C-4. Primary V.35 Pin Assignment

DTE

C-4 TSU LT User Manual 61202060L2-1

Index

Symbols

# of chan, config menu 5-9

%AV

4-2

%EF

4-2

Numerics

1-8 pattern 1-11

511 patttern

1-11

A

address, unit on utility menu 6-3

ADDRESS, util menu
ADTRAN Management Software
ADTRAN Web Site
ADTRAN Year 2000 (Y2K) Readi­ness Disclosure
AIS alarm
alarms, config menu
all ones pattern
all zeros pattern
AMI
AMP# 555164-2
AMP# 92-4883-3-1
arrows, up and down

4-4

5-2

3-4

1-7

iii

iii

5-7

1-11

1-11

C-1

C-4

3-5

B

B8ZS, config menu 5-2

bipolar violations
bit errors
BIT STUFFING, config menu
Bridge/Router Application

4-4

4-4

5-5

1-11

C

CAPS Department v

chain port output
chain-in

pin assignments

chain-out

pin assignments
channels, config menu
clear to send, CTS
clock source, config menu
clock sources
clock sources, network, DTE, inter­nal

5-3

CLR ERRORS, test menu
CNTRL PORT, config menu
code

5-2

code violations
Compliance, Y2K
CONFIG, menu
Config, menu
Configuration
Configuration Menu, menu tree
contents of package
control port input
control-in

pin assignments
CTS, clear to send
CURR ERR/ALM, status menu
4-3
current error/alarm menu
Customer Service
CVs

4-2

1-7

C-2
C-3

5-8

5-10

5-3

5-3

7-4

5-6

4-4

iii

3-3

5-1

5-1

5-1

2-1

1-6

C-2

5-10

3-3,

4-3

viii

D

data field 3-5

data loopback
data rate, config menu

1-9

5-7

61202060L2-1 TSU LT User Manual Index-1

Index

data set ready 5-10

DATA, config menu
DCD, data carrier detect
description, TSU LT
display field, menu field
display-only data fields, about
DSR

5-10

DTE interface loopbacks
DTE loopback
DTE timing, config menu
DTE TX CLK, config menu

5-9

5-10

1-2

3-5

3-7

1-10

1-10

5-4

5-9

E

Editing the Time/Date on utility
menu, how to
EIA-232
E-mail

iii

ERR/ALM HIST, status menu
ERR/ALM Hist, Submenu of Status
4-5
Error/Alarm History, menus
ES

4-2

exiting menus, how to

6-2

C-2

3-3

4-5

3-7

F

FACT RESTORE, util menu 3-4

factory restore, restoring factory de­fault settings
far end looped back test
Faxback Document Line, Y2K
Features, TSU LT
FORMAT, config menu
fractional T1
front panel, description of
front panel, software management
7

6-3

8-1

iii

1-5

5-2

1-2

3-8

1-

I

inband config channel 5-10

initialization, power up

2-2

INSERT 511 ERRORS, test menu
interfaces, Nx56/64
interfaces, TSU LT
internal timing, config menu

1-6

1-5

7-4

5-5

L

line loopback 1-9

local loopback, test menu
loopback

local

7-2

loopback tests
loss of signal

1-8

4-4

7-2

M

management software 1-7

Menu Features
Menu Functions, status, config, uti,
test

3-3

menu item, how to select
menu operation, example
menu options, for remote loopback,
remote loopback, menu options
menu options, test pattern screen
menu tree, config menu
menu tree, TSU LT complete
menu tree, utility menu
MODEM INIT, config menu

3-5

3-5

3-5

8-3

8-4

5-1

A-1

6-1

5-7

N

NETWORK (NI), config menu 3-3

network (NI), config menu
network interface performance re­port, about
network interface test
network interfaces
network jack
network loopbacks
network tests, test menu
Network Timed Clock Source
network timing, config menu

4-2

1-6

C-1

1-9

5-2

8-1

3-4, 7-2

5-4

5-4

Index-2 TSU LT User Manual 61202060L2-1

network, pin assignments C-1

NI PERF REPORTS, status menu
NI PERF RPTS, status menu
NI, network interfaces
Nx56/64 serial interface
Nx56/64K DTE

pin assignments

C-4

4-2

1-6

1-6

O

out of frame 4-4

output, config menu
overview

T1/FT1
TSU LT

1-1
1-2

5-7

3-3

Index

R

rate 56/64, config menu 5-8

red alarm
REINIT UNIT, util menu
reinit unit, utility menu
REMOTE LOOPBK, test menu
Repair and Return information
repair and return information
RJ-48
RJ-48C
run self-test, test menu
run self-test, test menu, test, run self­test
RX sensitivity, config menu

4-4

3-4

6-3

7-2

v

viii

C-3

C-1

7-4

3-4

5-5

P

passcode, how to set, add, change, or
delete

6-3

passcode, on utility menu
pattern generation, TSU LT
payload loopback
PC management
pin assignments

chain-in
chain-out
control-in

Nx56/64K DTE
pin assignments,network
PLL alarm
port tests, DTE loopback activation
7-6
PORT, config menu
port, config menu
POSITION of TSU LT
power connection, TSU LT
power up,self test
power-up
primary V.35 pin assignments
Product Matrix
Product Matrix, Y2K information

4-4

2-2

1-9

1-7

C-2

C-3

C-2

5-8

2-2

iii

6-3

1-11

C-4

C-1

3-3

5-6

2-2

C-4

iii

S

Safety Instructions vii

select a menu item, how to
self test, power up
self-test
self-test, test menu
SES
set LBO, config menu
SET PASSCODE, util menu
setting the data field, how to
shipping contents
software management
Software Management, front panel
1-7
SOFTWARE REV, util menu
software rev, utility menu
start chan, config menu
Status, menu
submenu item, how to select

1-8

4-2

2-2

7-4

2-1

4-1

3-5

5-5

3-4

3-7

1-7

3-4

6-2

5-9

3-6

T

T1

overview

service offerings
tel num, for alarm traps
test

1-1

1-1

5-8

61202060L2-1 TSU LT User Manual Index-3

Index

far end loopbacked 8-1

test pattern screen, menu options
test pattern, test menu
TEST, menu
test, network tests
test, TSU LT
testing

power up
testing operations
tests

examples
TIME/DATE, util menu
time/date, util menu
timing, DTE
timing, internal
timing, network
traps, config alarm conditions
TSU LT

overview
TSU LT clock sources
TSU LT Features
TSU LT pattern generation
TSU LT testing
TSU LT, main menu
TSU LT, network interfaces
TSU LT, packing list
T-Watch Pro
T-Watch Pro, software management

3-4
1-8

2-2

8-1

5-4

5-5

1-2

1-8

1-7

7-3

3-4

8-1

3-3

6-2

5-4

5-3

1-5

3-1

2-1

8-4

5-7

1-11

1-6

1-7

U

UNIT, config menu 3-3

unit, config submenu
Util menu, description
UTIL, menu
Utility Menu, menu tree

3-3

5-6

6-1

6-1

V

V.35 C-4

Viewing display-only data fields

3-7

W

Warranty and Customer Service viii

X

XMIT ALRM, config menu 5-3

Y

Y2K Compliance iii

Y2K Project Line
Y2K, Faxback Document Line
YEL ALRM, config menu
yellow alarm

iii

iii

5-2

4-4

Index-4 TSU LT User Manual 61202060L2-1

Product Support Information

Presales Inquiries and Applications Support

Please contact your local distributor, ADTRAN Applications Engineering, or
ADTRAN Sales:

Applications Engineering [phone]

Sales [phone]

Post-Sale Support

Please contact your local distributor first. If your local distributor cannot help,
please contact ADTRAN Technical Support and have the unit serial number
available.

Technical Support (888) 4ADTRAN

Repair and Return

If ADTRAN Technical Support determines that a repair is needed, Technical
Support will coordinate with the Customer and Product Service (CAPS) depart­ment to issue an RMA number. For information regarding equipment currently
in house or possible fees associated with repair, contact CAPS directly at the fol­lowing number:

CAPS Department [phone]

Identify the RMA number clearly on the package (below address), and return to
the following address:

ADTRAN Customer and Product Service
6767 Old Madison Pike
Progress Center
Building #6, Suite 690
Huntsville, AL 35807
RMA # _____________