ADTRAN TSU 120, TSU 120e User Manual

January 1999
61202129L1-1C

TSU 120 & 120e

User Manual

Part Number

1202129L1
1202129L2

Trademarks:

Windows is a registered trademark of Microsoft Corp.
T-WATCH Pro is a trademark of ADTRAN, Inc.

OpenView®
SLC96 is a trademark of AT&T

is a trademark of Hewlett Packard.

901 Explorer Boulevard

P.O. Box 140000

Huntsville, AL 35814-4000

Phone: [phone]

© 1998 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 [phone]

Y2K plans and product certifications are listed in
the matrix.

Y2K Project Line [phone]
E-mail [e-mail]

iii

Notes provide additional useful information.

Cautions signify information that could prevent service interrup­tion.

Warnings provide information that could prevent damage to the
equipment or endangerment to human life.

iv

FCC Regulations Require that the Following Information be
Provided to the Customer

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

2. 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.

3. If your TSU 120 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.

4. 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.

5. If you experience trouble with the equipment TSU 120, please contact
ADTRAN at [phone] for repair/warranty information. The tele­phone company may ask you to disconnect this equipment from the net­work until the problem has been corrected, or until you are sure the
equipment is not malfunctioning.

6. This unit contains no user serviceable parts.

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 6.0N 04DU9-BN RJ-48C

1.544 Mbps - SF and B8ZS 6.0N 04DU9-DN RJ-48C

1.544 Mbps - ESF 6.0N 04DU9-1KN RJ-48C

1.544 Mbps - ESF and B8ZS 6.0N 04DU9-1SN RJ-48C

v

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.

vi

CANADIAN EMISSIONS REQUIREMENTS

This digital apparatus does not exceed the Class A limits for radio noise
emissions from digital apparatus as set out in the interference-causing
equipment standard entitled “Digital Apparatus,” ICES-003 of the De­partment of Communications.

Cet appareil nuerique respecte les limites de bruits radioelectriques ap­plicables aux appareils numeriques de Class A prescrites dans la norme
sur le materiel brouilleur: “Appareils Numeriques,” NMB-003 edictee
par le ministre des Communications.

vii

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.

viii

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.

Affidavit Requirements for Connection To Digital Services

• An affidavit is required to be given to the telephone company when­ever digital terminal equipment without encoded analog content and
billing protection is used to transmit digital signals containing encod­ed analog content which are intended for eventual conversion into
voiceband analog signals and transmitted on the network.

• The affidavit shall affirm that either no encoded analog content or
billing information is being transmitted or that the output of the de­vice meets Part 68 encoded analog content or billing protection spec­ifications.

• End user/customer will be responsible to file an affidavit with the lo­cal exchange carrier when connecting unprotected CPE to a 1.544
Mbps or subrate digital services.

• Until such time as subrate digital terminal equipment is registered
for voice applications, the affidavit requirement for subrate services
is waived.

ix

Affidavit For Connection Of Customer Premises Equipment To 1.544 Mbps
And/or Subrate Digital Services

For the work to be performed in the certified territory of
_______________________________________(telco name)

State of ___________________________________________

County of ________________________________

I, ___________________________________ (name),

(business address), ______________________ (telephone number) being
duly sworn, state:

I have responsibility for the operation and maintenance of the terminal
equipment to be connected to 1.544 Mbps and/or ________ subrate dig­ital services. The terminal equipment to be connected complies with
Part 68 of the FCC rules except for the encoded analog content and bill­ing protection specifications. With respect to encoded analog content
and billing protection:

( ) I attest that all operations associated with the establishment, main­tenance, and adjustment of the digital CPE with respect to analog con­tent and encoded billing protection information continuously complies
with Part 68 of the FCC Rules and Regulations.

( ) The digital CPE does not transmit digital signals containing encoded
analog content or billing information which is intended to be decoded
within the telecommunications network.

( ) The encoded analog content and billing protection is factory set and
is not under the control of the customer.

I attest that the operator(s)/maintainer(s) of the digital CPE responsible
for the establishment, maintenance, and adjustment of the encoded an­alog content and billing information has (have) been trained to perform
these functions by successfully having completed one of the following
(check appropriate blocks):

x

( ) A. A training course provided by the manufacturer/grantee of the
equipment used to encode analog signals; or

( ) B. A training course provided by the customer or authorized repre­sentative, using training materials and instructions provided by the
manufacturer/grantee of the equipment used to encode analog signals;
or

( ) C. An independent training course (e.g., trade school or technical
institution) recognized by the manufacturer/grantee of the equipment
used to encode analog signals; or

( ) D. In lieu of the preceding training requirements, the operator(s)/
maintainer(s) is (are) under the control of a supervisor trained in accor­dance with _________ (circle one) above.

I agree to provide _________________ (telco's name) with proper docu­mentation to demonstrate compliance with the information as provided
in the preceding paragraph, if so requested.

_________________________________Signature

_________________________________Title

_________________________________ Date

Transcribed and sworn to before me

This ________________________________________ (month/day/year)

_________________________________

Notary Public

My commission expires:

_________________________________

xi

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) during 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 vicinity 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

xii

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.

xiii

xiv

Table of Contents

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

TSU 120 Overview .................................................................................................... 1-1

Standard Features in the TSU 120 ................................................................... 1-2

TSU Option Modules ........................................................................................ 1-3

Option Module Architecture ........................................................................... 1-4

TSU 120 Configuration Applications .................................................................... 1-4

Router, PBX, Video Conferencing Applications ........................................... 1-4

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

Unpack, Inspect, Power Up .................................................................................... 2-1

Receipt Inspection ............................................................................................. 2-1

ADTRAN Shipments Include .......................................................................... 2-1

Customer Provides ........................................................................................... 2-1

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

Grounding Instructions ........................................................................................... 2-2

TSU 120 Interfaces ............................................................................................. 2-5

Network Interface ...................................................................................... 2-5

Network Test Interface .............................................................................. 2-5

Nx56/64 Serial Interface (TSU 120e only) .............................................. 2-5

DSX-1 (PBX) Interface ................................................................. 2-6

DSX-1 Test Interface .................................................................... 2-6

Chain Port Input ........................................................................................ 2-6

Chain Port Output ..................................................................................... 2-6

10BaseT Interface (TSU 120e only) .......................................................... 2-6

Power Up Testing .............................................................................................. 2-7

Self-Test .............................................................................................................. 2-7

Initialization ....................................................................................................... 2-7

Set User Passcode ....................................................................................... 2-7

Set Unit Identification ............................................................................... 2-7

Set Chain Port Input .................................................................................. 2-8

Chain-In (PC) ............................................................................... 2-8

Chain-in/Chain Out .................................................................... 2-8

61202129L1-1 TSU 120 User Manual xv

Table of Contents

Power-Up Procedure ........................................................................................2-9

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

Front Panel .................................................................................................................3-1

LED Descriptions ...............................................................................................3-2

CSU Status ..........................................................................................................3-2

DSU/DSX Status ..........................................................................3-4

Module Status ............................................................................... 3-4

Operation Keys ...........................................................................................3-5

General Menu Operation ......................................................................... 3-5

Select and Activate a Menu Item ............................................................. 3-6

Set the Data Field ........................................................................................3-7

Display Only Data Fields ..........................................................................3-7

Exit Any Menu Field Operation Or Display ..........................................3-8

Data Port Identification ....................................................................................3-8

Front Panel Menu Structure .............................................................................3-9

Status ............................................................................................................ 3-9

Config (Configuration) .............................................................................. 3-9

Util (Utilities) ..............................................................................................3-9

Test ............................................................................................................... 3-9

Alternate Methods of Control ........................................................................3-10

T-WATCH Pro (ADTRAN PC Program) ..............................................3-10

T-WATCH Pro/LAN Connection ...........................................3-10

T-WATCH Pro/EIA-232 Connection ...................................... 3-11

SNMP .........................................................................................................3-11

Terminal Mode ......................................................................................... 3-12

TELNET ..................................................................................................... 3-12

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

Network Performance Reports (NI PERF RPTS) .......................................... 4-2

Network Interface Errors (NI ERRORS) ........................................................4-3

Active Alarms .................................................................................................... 4-3

View History ......................................................................................................4-4

Port Status ...........................................................................................................4-4

0.1 Nx56/64 Menu Items ...........................................................................4-5

DTE Data/Clock ..........................................................................4-5

DTE Status ....................................................................................4-5

Port Rate ........................................................................................ 4-5

DBU Data/CNTRL (TSU 120e only) .........................................4-5

DBU Contrl (TSU 120e only) ......................................................4-6

DBU Status (TSU 120e only) .......................................................4-6

xvi TSU 120 User Manual 61202129L1-1

Table of Contents

0.2 DSX-1 Menu Items ............................................................................... 4-6

DSX-1 Errors ................................................................................ 4-6

Remote Port ........................................................................................................ 4-7

Clear Port Alarm (Clear Port Alm) ................................................................. 4-7

ENET Status (TSU 120e only) ..........................................................................4-7

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

Network (NI) ............................................................................................................. 5-3

Network (NI) Menu Items ...............................................................................5-3

TSU 120 Clock Sources ..................................................................................... 5-5

Network Timed .......................................................................................... 5-6

Base DSX-1 Timing .................................................................................... 5-7

DTE Timing ................................................................................................. 5-8

Internal Timing ........................................................................................... 5-9

Secondary Timing .................................................................................... 5-10

Normal (CSU) Timing ............................................................................. 5-11

U-BR1TE .................................................................................................... 5-11

Unit Menu ........................................................................................................5-12

Map Exchange (Map Xchng) ......................................................................... 5-14

Map In Use: A(B) ............................................................................................ 5-14

DS0 Map A and DS0 Map B ........................................................................... 5-15

DSO Map Example .................................................................................. 5-16

Port Configuration (Port Config) ................................................................. 5-18

0.1 Nx56/64 Port Configuration (Port Config) Menu Items ..............5-18

Nx56/64 Menu Items ................................................................ 5-18

DBU Configuration Menu Items (TSU 120e only) ............... 5-21

0.2 DSX-1 Port Configuration (Port Config) Menu Items .................. 5-23

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

Time/Date .......................................................................................................... 6-3

Factory Restore (Fact Restore) ......................................................................... 6-3

Enter Passcode from Other Menus .......................................................... 6-3

Change/Set a Passcode ............................................................................. 6-4

Passcode Automatic Time-out ................................................................. 6-4

No Passcode Desired ................................................................................. 6-4

Unit ID ................................................................................................................ 6-4

Set the Unit Identification ......................................................................... 6-5

No Unit ID Desired .................................................................................... 6-5

Software Revision (Software Rev) .................................................................. 6-5

Port Utility (Option Ports) ............................................................................... 6-5

ENET Address (TSU 120e only) ...................................................................... 6-5

61202129L1-1 TSU 120 User Manual xvii

Table of Contents

Serial Number .................................................................................................... 6-5

CMD Mode .........................................................................................................6-5

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

Network Tests .................................................................................................... 7-3

Loopback Tests ........................................................................................... 7-3

Network Interface Loopbacks ..................................................................7-3

Line Loopback .............................................................................. 7-3

Payload Loopback ....................................................................... 7-3

LOCAL LOOPBCK ......................................................................7-4

REMOTE LOOPBK ......................................................................7-4

Test Patterns ................................................................................................ 7-5

All Zeros ........................................................................................ 7-5

All Ones .........................................................................................7-5

QRSS Pattern ............................................................................................... 7-5

PATTERN RESULT ....................................................................................7-6

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

Port Tests ............................................................................................................7-8

Port Test Menu Items for 0.1 Nx56/64 .................................................... 7-9

DTE LOOPBK ...............................................................................7-9

511 PATTERN .............................................................................. 7-9

511 RESULTS ................................................................................ 7-9

DBU Loopback (TSU 120e only) ..............................................7-10

DBU Test (TSU 120e only) ........................................................7-10

DBU DATA/CNTRL (TSU 120e only) ....................................7-10

DBU TST RESULT (TSU 120e only) ........................................ 7-10

Port Test Menu Items for 0.2 DSX-1 ......................................................7-10

Loopback .....................................................................................7-10

Cancel Tests ......................................................................................................7-10

Chapter 8 Telnet/Terminal Menus ................................................................ 8-1

Main Menu ................................................................................................................8-1

Status, Config, Util, and Test Menu Options ................................................8-2

DS0 Maps Configuration Menu ............................................................... 8-2

Map Configuration ...................................................................... 8-3

Initializing the Temp Map .......................................................... 8-3

Editing the Temp Map ................................................................ 8-4

Applying the Temp Map ............................................................ 8-4

Reviewing Maps .......................................................................... 8-4

Remote Menu Access ........................................................................................8-5

Management Configuration .............................................................................8-5

xviii TSU 120 User Manual 61202129L1-1

Table of Contents

Unit Access Table ....................................................................................... 8-5

Add New Unit .............................................................................. 8-6

Modify Unit .................................................................................. 8-7

Delete Unit .................................................................................... 8-7

Default Unit Passcode ................................................................. 8-7

OK .................................................................................................. 8-7

SNMP Read Community ..........................................................................8-7

SNMP Read/Write Community .............................................................. 8-7

Host 1 Trap IP Address ..............................................................8-8

Host 2 Trap IP Address ..............................................................8-8

Host 3 Trap IP Address ..............................................................8-8

Host 4 Trap IP Address ..............................................................8-8

System Name ................................................................................ 8-8

System Contact ............................................................................. 8-8

System Location ........................................................................... 8-9

Auth. Fail Traps Sent .................................................................. 8-9

Poll Link Status Traps Sent ........................................................ 8-9

Ping IP Host .................................................................................. 8-9

Telnet/Terminal Timeout .......................................................... 8-9

Telnet/Terminal Password ........................................................ 8-9

Exit ................................................................................................. 8-9

Flash Download ............................................................................................... 8-10

Quit Session ...................................................................................................... 8-10

Appendix A. Understanding SNMP ..................................................................A-1

Appendix B. Understanding TR-08 ................................................................... B-1

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

Appendix D. System Messages ...........................................................................D-1

Appendix E. Specifications ..................................................................................E-1

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

61202129L1-1 TSU 120 User Manual xix

Table of Contents

xx TSU 120 User Manual 61202129L1-1

List of Figures

Figure 1-1. TSU Option Modules ......................................................................... 1-4

Figure 1-2. Router, PBX, Video Conferencing Application Set Up ................. 1-4

Figure 2-1. TSU 120e Rear Panel .......................................................................... 2-4

Figure 2-2. TSU 120 Rear Panel ............................................................................ 2-4

Figure 2-3. TSU 120 Interfaces .............................................................................. 2-5

Figure 2-4. Example of Chain-in .......................................................................... 2-8

Figure 3-1. TSU 120 Front Panel Layout ............................................................. 3-3

Figure 3-2. Example of Basic Front Panel Menu Tree ....................................... 3-6

Figure 3-3. Display and Data Fields .................................................................... 3-7

Figure 4-1. Complete Status Menu Tree ............................................................. 4-1

Figure 4-2. Network Interface Performance Report .......................................... 4-2

Figure 4-3. Display of Alarm Message ................................................................ 4-4

Figure 5-1. Complete Configuration Menu ........................................................ 5-2

Figure 5-2. Network Timed Clock Source .......................................................... 5-6

Figure 5-3. DSX-1 Timed Clock Source ............................................................... 5-7

Figure 5-4. DTE Timed Clock Source .................................................................. 5-8

Figure 5-5. Internal Clock Source ........................................................................ 5-9

Figure 5-6. Secondary Timing ............................................................................ 5-10

Figure 5-7. Normal (CSU) ................................................................................... 5-11

Figure 5-8. DS0 Map Designations .................................................................... 5-15

Figure 5-9. Create Temp Selection Screen ........................................................ 5-17

Figure 6-1. Complete Utility Menu Tree ............................................................. 6-2

Figure 7-1. Complete Test Menu Tree ................................................................. 7-2

Figure 7-2. Network Loopback Tests .................................................................. 7-4

Figure 8-1. Telnet/Terminal Main Menu ........................................................... 8-1

Figure 8-2. DS0 Temp Map ................................................................................... 8-2

Figure 8-3. Unit Access Table ............................................................................... 8-6

61202129L1-1 TSU 120 User Manual xxi

List of Figures

xxii TSU 120 User Manual 61202129L1-1

List of Tables

Table 3-1. Front Panel Descriptions ...................................................................3-1

Table 5-1. Normal Mode of Operation ...........................................................5-20

Table A-1. How to Configure Network Manager MIB ....................................A-5

Table C-1. Network Pinouts ................................................................................C-1

Table C-2. Control In/Chain in Pinout .............................................................C-2

Table C-3. Chain Out Pinout ...............................................................................C-3

Table C-4. V.35 Pinout - Nx56/64 DTE .............................................................C-4

Table C-5. Pinout Connectors for Modular Jack Interface ..............................C-5

Table C-6. 10BaseT Ethernet (TSU 120e only) ..................................................C-6

61202129L1-1 TSU 120 User Manual xxiii

List of Tables

xxiv TSU 120 User Manual 61202129L1-1

Chapter 1

TSU 120 OVERVIEW

This manual covers the use of the following products:

• TSU 120

• TSU 120e

Unless otherwise stated, the TSU 120 refers to both products.

The TSU 120 is a T1/FT1 multiplexer with an Nx56/64 V.35
data port, a DSX-1 (PBX) interface, one option slot, and embed­ded SNMP management. The TSU 120e offers a built-in dial
back up feature for the Nx port. The TSU 120’s option slot
accepts one of many available option modules for voice and
data applications.

The TSU 120 links user data sources such as local area network
(LAN) bridges and routers, computers, CAD systems, telecon­ferencing equipment, and PBXs. Through the use of multiple
data ports, the TSU 120 can simultaneously connect one or
more of these devices to a T1 circuit. The amount of bandwidth
allocated to each port is custom-programmable. You can manu­ally allocate bandwidth or set the bandwidth to automatically
change at predetermined times to use the available bandwidth
most advantageously. Changes in the configuration do not dis­rupt data flow in channels that are not being reconfigured. The
unique architecture and the availability of option modules pro­vides a path for growth to accommodate future requirements.

Introduction

61202129L1-1 TSU 120 User Manual

1-1

Chapter 1. Introduction

The TSU 120 offers a wide variety of network management
options. You can manage via SNMP through the 10BaseT (TSU
120e only) or chain-in ports. If you are using T-WATCH Pro, a
Microsoft Windows® -based program, you can manage the
TSU 120 via the same 10BaseT (TSU 120e only) or chain-in
ports. An enhanced VT 100 terminal interface is also provided.

Standard Features in the TSU 120

The following list describes the standard features in both the
TSU 120 and the enhanced TSU 120e.

• A single T1 interface.

• An Nx56/64 V.35 port and DSX-1 (PBX) interface.

• SNMP, Telnet, and T-WATCH Pro management via SLIP or
10BaseT (10BaseT is only in the TSU 120e).

• Ability to proxy for “agentless” units

• Enhanced terminal mode

• An inband communication channel requiring only 8k of
bandwidth from a single DS0.

• One option slot to house option modules with up to four ad­ditional ports, including voice and data.

• Allows mix of port types to meet the data interface require­ments.

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

• Two programmable configuration maps that define the
bandwidth allocation between data ports.

• Data drop and insert, as well as full drop and insert.

• Flash memory for software updates.

• Timing is selectable from the network, from the Nx56/64 or
DSX-1 ports, internally, or from a secondary interface.

• Fractional T1 loopbacks as defined in Annex B of ANSI
T1.403-1995

• QRSS; 511 test patterns using Nx option.

• Integrated Dial Backup Capability in the Base Nx56/64 port
( TSU 120e only)

• Extensive self-testing and monitoring provides assurance of
proper operation.

1-2

TSU 120 User Manual 61202129L1-1

TSU Option Modules

Some of the option modules available for the TSU 120 are:

Name Description

DSX-1 Short haul T1 interface for operation

Full Drop and Insert Permits the dropping of data and

Nx56/64 Serial Interface Provides a V.35 serial interface in

Voice Interface 2/4 channel FXS/FX0/E&M.
OCU DP Interfaces to DDS or 4-wire

DSU DP Provides two sync or async ports

Dial Backup Allows data backup upon network

U-BR1TE Allows ISDN lines to be extended

Router Provides 10BaseT port and integrated

NxIQ Provides Frame Relay monitoring

Chapter 1. Introduction

with a PBX (Terminal Interface).

insertion of new data into the same
DS0 time slot.

Includes a long haul DS1 interface.

Can be used as a second DS1
interface to provide up to 3 MB
aggregate throughput.

either single or dual versions.

Switched 56.

(232 or V.35).

T1 failure.

over a T1 line.

IP/IPX routing.

capabilities.

61202129L1-1 TSU 120 User Manual

1-3

Chapter 1. Introduction

Option Module Architecture

The TSU 120 features a unique architecture that allows you to
add one option module and plug-on board to accommodate
another application. See

Figure 1-1

.

DSX-1

Module

OCU-DP

Module

V.35

Module

D&I

Module

DUAL
Voice

TD1

RD1

TD2

RD2

ALM

TDNRDN

/TST

TSU 120

TSU 120e

A

B

1

2

D

3

E

4

F

5

NEXT

6

PREV

7

ADD

8

SHIFT

9

DELETE

QUICK

0

#

C

Figure 1-1. TSU Option Modules

TSU 120 CONFIGURATION APPLICATIONS

The following example illustrates possible configurations of
TSU 120 applications.

Router, PBX, Video Conferencing Applications

The base Nx54/64 provides a V.35 interface to a router. The
PBX is interfaced to the TSU 120 with the base DSX-1 interface.
An OCU DP module and OCU DP plug-on board provide two
Switched-56 circuits for video conferencing. The 10BaseT port
allows SNMP network management over the LAN (TSU 120e
only). See

PBX

Figure 1-2

.

TSU 120

TSU 120e

A

B

1

C

2

D

3

E

4

TD1

RD1

TD2

F

RD2

5

ALM

TDNRDN

NEXT

/TST

6

PREV

7

A

D
D

8

SHIFT

9

DELETE

Q
U

ICK

0

#

ROUTER

(TSU 120e only)

10 BaseT LAN

Plug on

V.35

Plug on

OCU DP

Plug on

Dual Voice

VIDEO
CONFERENCING

SNMP NETWORK

MANAGEMENT WORKSTATION

Figure 1-2. Router, PBX, Video Conferencing Application Set Up

1-4

TSU 120 User Manual 61202129L1-1

Chapter 2

UNPACK, INSPECT, POWER UP

Receipt Inspection

Carefully inspect the TSU 120 for any shipping damages. If
you suspect damage, file a claim immediately with the carrier
and then contact ADTRAN Customer Service (see inside the
last page of this manual). If possible, keep the original ship­ping container for use in shipping the TSU 120 back for repair
or for verification of damage during shipment.

ADTRAN Shipments Include

• The TSU 120

• Two-line interface cable: an 8-position modular to 8-posi­tion modular (15 ft.)

• Loopback plug

• DB 15 to RJ adapter

• DB 25 to RJ adapter

• An 8-position modular cable for connection to the chain-in
port (6 ft.)

•The TSU 120 and TSU 120e User Manuals

Installation

Customer Provides

• Cables for any expansion modules to be used with the TSU
120

• 10BaseT cable for connection to a LAN or router, if you plan
to use remote management features (TSU 120e only)

61202129L1-1 TSU 120 User Manual

2-1

Chapter 2. Installation

Power Connection

Each TSU 120 is equipped with a captive eight-foot power cord,
terminated by a three-prong plug which connects to a
grounded power receptacle.

Power to the TSU 120 must be from a grounded 90-120 VAC, 50/
60 Hz source.

GROUNDING INSTRUCTIONS

Grounding instruction information from the Underwriters' Lab­oratory UL 1950 3rd Edition, is provided in this section.

An equipment grounding conductor that is not smaller in size
than the ungrounded branch-circuit supply conductors is to be
installed as part of the circuit that supplies the product or sys­tem. Bare, covered, or insulated grounding conductors are
acceptable. Individually covered or insulated equipment
grounding conductors shall have a continuous outer finish that
is either green, or green with one or more yellow stripes. The
equipment grounding conductor is to be connected to ground
at the service equipment.

2-2

The attachment-plug receptacles in the vicinity of the product
or system are all to be of a grounding type, and the equipment
grounding conductors serving these receptacles are to be con­nected to earth ground at the service equipment.

A supplementary equipment grounding conductor shall be
installed between the product or system and ground that is in
addition to the equipment grounding conductor in the power
supply cord.

The supplementary equipment grounding conductor shall not
be smaller in size than the ungrounded branch-circuit supply
conductors. The supplementary equipment grounding con­ductor shall be connected to the product at the terminal pro­vided, and shall be connected to ground in a manner that will
retain the ground connection when the product is unplugged
from the receptacle. The connection to ground of the supple-

TSU 120 User Manual 61202129L1-1

Chapter 2. Installation

mentary equipment grounding conductor shall be in compli­ance with the rules for terminating bonding jumpers at Part K
or Article 250 of the National Electrical Code, ANSI/NFPA 70.
Termination of the supplementary equipment grounding con­ductor is permitted to be made to building steel, to a metal
electrical raceway system, or to any grounded item that is per­manently and reliably connected to the electrical service equip­ment ground.

Bare, covered, or insulated grounding conductors are accept­able. A covered or insulated grounding conductor shall have a
continuous outer finish that is either green, or green with one
or more yellow stripes.

The supplemental grounding conductor shall be connected to
the equipment using a number 8 ring terminal. The terminal
should be fastened to the grounding lug provided on the rear
panel of the equipment. The ring terminal should be installed
using the appropriate crimping tool (AMP P/N 59250 T-EAD
Crimping Tool or equivalent).

61202129L1-1 TSU 120 User Manual

2-3

Chapter 2. Installation

Identification of Rear Panel Layout

The configuration of the rear panel of the TSU 120e is shown in
Figure 2-1. The TSU 120 rear panel is shown in Figure 2-2.

DSX-1
Connection

OPTION
SLOT 1

NETWORK

T1 Network
Connection

DSX-1
Connection

OPTION
SLOT 1

NETWORK

Monitor/Test Jacks for DSX-1

PORT 0.2

DSX-1

OUT

IN T-MON

IN OUT R-MON

Monitor/Test Jacks
for T1

IN OUT

Figure 2-1. TSU 120e Rear Panel

Monitor/Test Jacks for DSX-1

PORT 0.2

DSX-1

OUT

IN T-MON

IN OUT R-MON

IN OUT

10 BASE T

10 Base T Connection for LAN

CAUTION-RISK OF ELECTRIC SHOCK

SUPPLEMENTAL EARTH GROUND MUST BE CONNECTED PRIOR TO

CONNECTION OF TELECOMMUNICATIONS WIRING

C
H
A

I

N

Control In/Out
Connection

CAUTION-RISK OF ELECTRIC SHOCK

SUPPLEMENTAL EARTH GROUND MUST BE CONNECTED PRIOR TO

CONNECTION OF TELECOMMUNICATIONS WIRING

C
H
A

I

N

PORT 0.1

PORT 0.1

V.35

V.35 Connector

V.35

90-120VAC
50/60HZ.2A

90-120VAC
50/60HZ.2A

Power
Switch

P

O
W
E
R

Power
Switch

P
O
W
E
R

2-4

T1 Network
Connection

Monitor/Test Jacks
for T1

Control In/Out
Connection

Figure 2-2. TSU 120 Rear Panel

TSU 120 User Manual 61202129L1-1

V.35 Connector

TSU 120 Interfaces

The TSU 120 is equipped with a Nx56/64 data port, a DSX-1
interface, an option slot, management interfaces, and a T1
interface, in the rear panel. See Figure 2-3.

PC or Modem

10BaseT LAN

(TSU 120e only)

Chapter 2. Installation

Control

Input

TSU 120e

NI

Network

DSX-1

Nx56/64 Nx56/64

PBX

V.35

Figure 2-3. TSU 120 Interfaces

Network Interface

The Network Interface (NI) port provides the connection to the
T1. This port complies with the applicable ANSI and AT&T
standards. For more information see the Wiring section in
Appendix C, on page C-1.

Network Test Interface

The

IN and OUT test jacks for the network interface provide

intrusive test capability for the incoming T1. By connecting to
these jacks with test equipment, the T1 connection will be bro­ken, and the test equipment will terminate the incoming T1.
The

R-MON test jack provides a bridged access jack for non-

intrusive monitoring of the incoming T1. When connected to
this jack, the test equipment should be configured for a bridged
termination.

Chain

Output

Option Option

DSX-1

Chain

Input

NI

DSX-1

V.35

TSU 120e

Chain

Output

Nx56/64 Serial Interface (TSU 120e only)

The Nx56/64 provides a serial V.35 port that operates from
56 kbps to 1.536 Mbps. This port provides 511 pattern genera­tion and detection and remote loopback capability.

61202129L1-1 TSU 120 User Manual

2-5

Chapter 2. Installation

DSX-1 (PBX) Interface

The DSX-1 Interface provides a short haul T1 for a PBX or other
equipment. This port complies with ANSI T1.102.

DSX-1 Test Interface

The
sive test capabilities for the T1 connecting the TSU 120 to the
PBX or other customer premise equipment. By connecting to
these jacks with test equipment, the DSX-1 connection will be
broken, and the test equipment will be terminating the DSX-1
connection from the PBX.

The
non-intrusive monitoring of the T1 connecting the TSU 120 to
the PBX or other customer premise equipment. When con­nected to this jack, the test equipment should be configured for
a

Chain Port Input

The chain port input provides an EIA-232 input from a PC or a
modem for control of the TSU 120. You can also use it as a chain
input from another TSU 120 or the TSU 100. For more informa­tion see the Wiring section in Appendix C, on page C-1.

IN and OUT test jacks for the DSX-1 interface provide intru-

T-MON test jack provides a DSX monitor access jack for

DSX MON termination.

2-6

Chain Port Output

The chain port output provides an EIA-232 output to chain con­trol to other TSUs. For more information see the Wiring section
in Appendix C, on page C-1.

10BaseT Interface (TSU 120e only)

The 10BaseT interface provides the LAN interface for manag­ing the TSU 120 with SNMP or T-WATCH Pro. For more infor­mation see the Wiring section in Appendix C, on page C-1.

TSU 120 User Manual 61202129L1-1

Power Up Testing

When shipped from the factory, the TSU 120 is set to factory
default conditions. At the first application of power, the unit
automatically executes a memory self-test. A full self-test can
be run from the front panel. A passcode and Unit ID may be
set using the

Self-Test

UTIL M

ENU

Chapter 2. Installation

.

Initialization

Set User Passcode

Set Unit Identification

Upon a power-up, the LCD displays

M

EMORY TEST NOW TESTING

and the Test LEDs are illuminated. When the self-test is com­pleted with no failures detected, the
LCD momentarily displays

EMORY TEST(S

M

OK LED

lights up and the

. If a fail-

ASSED

) P

ure is detected, a list of failures is displayed in the LCD win­dow.

The TSU 120 is designed to operate with or without the use of a
passcode. The default condition is without a passcode.

If the unit is to be remotely accessed using T-WATCH Pro, you
must enter a passcode. When managing a number of units, the
passcode can be the same for all the units.

The passcode should be a number easily remembered. Once
entered, the passcode is required to access any operation other
than viewing. See Change/Set a Passcode on page 6-4 for details.

The Unit ID sets the unit to respond to remote control (con­trolled by a device other than the front panel or terminal). If no
Unit ID is recorded it is not possible to operate from any remote
control device, including the local PC for T-WATCH Pro or
SNMP. See Unit ID on page 6-4 for details.

61202129L1-1 TSU 120 User Manual

2-7

Chapter 2. Installation

Set Chain Port Input

The TSU 120 can be configured from the chain port input when
T-WATCH Pro, SNMP, or the terminal interface are being used.
In this case, the chain port baud rate must also be selected.

Chain-In (PC)

The unit can be controlled from an external PC connected
directly or via modem to the chain-in port. When using chain­in, the selection of the chain-in port baud rate from 9600 (fac­tory default), 1200, 2400, 19200, or 38400 must be made using
the
details.

Unless locked out externally, the front panel can also control
the unit.

Chain-in/Chain Out

TSU 120 units and other TSUs can be linked together to form a
chain. Figure 2-4 provides an example of a chain-in arrange­ment with a PC or a modem. The first TSU 120 in the chain
receives controlling input from the PC or modem.

NIT CONFIGURATION MENU

U

. See Unit Menu on page 5-12 for

2-8

PC or Modem

Chain

Input

TSU 120

Chain

Out

ChainInChain

Out

TSU 120/

TSU 100/TSU

ChainInChain

Out

TSU 120/

TSU 100/TSU

Figure 2-4. Example of Chain-in

Subsequent TSUs in the chain are in a position to intake infor­mation from another TSU. This in-taking of information from
another TSU in the chain is identified as chain-in. The baud
rate for the chained units must match that of the first unit.

Unless locked out externally, the front panel can also control
the unit.

TSU 120 User Manual 61202129L1-1

At this point, the Unit Initialization procedure is concluded. If
the unit is to be configured remotely, there are no additional
items necessary to complete prior to executing remote configu­ration.

The Passcode, the Unit ID, and the Control Port settings are
stored in a nonvolatile memory. This ensures they are operable
for subsequent power-up sequences.

Power-Up Procedure

After the unit has been put into operation with the initial
power-up and initialization, the subsequent power-up proce­dure includes only the power-up self-test followed by the
request for a passcode (password) if this option was selected
during initialization. Use the
ously recorded passcode and press

Chapter 2. Installation

Number Keys to enter the previ-

Enter.

61202129L1-1 TSU 120 User Manual

2-9

Chapter 2. Installation

2-10

TSU 120 User Manual 61202129L1-1

Chapter 3

FRONT PANEL

The TSU 120 front panel monitors operation and controls the
configuration of the unit. The TSU 120 front panel is shown on
page 3-3. Figure 3-1 describes each part of the front panel.

LCD Window

Enter

Up and Down
Arrows

Cancel

Operation

Table 3-1. Front Panel Descriptions

Name Description

Displays menu items and messages in two
lines by 16 characters and alarm and status
information.

Selects active menu items.
To select a menu item, press the number of
the item. The menu item flashes,
indicating it is activated. Press
select the menu item.

Up

and Down Arrows scroll through and

activate the submenu items available in
the current menu. When the submenu
items are scrolled, the flashing cursor
indicates the active parameters.

Pressing the Cancel
activity and returns to the previous menu.
Repeat until the desired menu level is
reached. When a submenu item is
displayed, press
display and return to the previous menu.

key stops the current

Cancel to exit the current

Enter to

61202129L1-1 TSU 120 User Manual

3-1

Chapter 3. Operation

Numeric Keypad

Shift (entering
special function
keys)

Table 3-1. Front Panel Descriptions

Name Description

The numeric keypad contains the numbers

0 through 9 which are used to activate

menu items and enter information (such as
the IP address).

Enter special function keys by pressing
and holding

Shift before pressing the key

representing the desired character.

To activate a special function key rather
than a number, press and hold
the button. See Operation Keys on page 3-5
for a description of the function keys.

Shift;

then

LED Descriptions

CSU Status

The CSU status LEDs display the operational condition of the
network interface located on the controller board in the unit.

GREEN

OK (

EST

T

YELLOW

(

RROR (RED

E

LARM (RED

A

)

Indicates the operation is in the normal mode and no

)

errors have been detected.
Indicates that the network interface is operating in a test

mode. This includes a self-test or a test loopback. When
lighted, this LED also indicates that normal data flow is
not occurring on the network interface.

Indicates an error such as a BPV, OOF, or CRC.

)

Indicates an alarm condition has been detected. When the

)

alarm condition is no longer valid, the OK LED activates
(turns on). To view an alarm condition, select the active
alarm menu item or select
the alarm conditions have been corrected, the alarm which
caused the activation of the Alarm LED can be viewed
under the Unit History menu.

If a key is pressed without using

Shift, the

numbered item becomes active instead of
the special function key.

by pressing Shift+8. If

LARM

A

3-2

TSU 120 User Manual 61202129L1-1

Chapter 3. Operation



.





















No Description Action/Status

1 LCD Window Displays menu items and messages in 2 lines by 16

characters

2 Up and Down Arrows Scroll through and activate the submenu items available in

the current menu. The flashing cursor indicates the ac tive

parameter
3 Enter Key Selects act i ve ite m
4 Alarm Quick access to the active display menus
5 Clear Clears da ta/results fi elds
6 Shift Provi des access to special function keys
7 OK (DSU/DSX Status) Operation is in normal mode with no detected errors
8 Test (DSU/DSX Status) Active when the module is in test mode
9 Alarm (DSU/DS X Status ) Active when an alarm conditio n has been detected
10 OK (Module Status) Operation is in normal mode with no detected errors
11 T est (Module Status) Active when the module is in test mode
12 Alarm (Module Status) Active when an alarm condition has been detected
13 Cancel Stops current activity and returns to the previous menu
14 Copy Copies last data entered into the current DS0
15 OK (CSU Status) Operation is in normal mode with no detected errors
16 TEST (CSU Status) Active when the network interface is in test mode
17 Error (CSU Status) Indicates errors such as BPV, OOF or CRC
18 Home Returns to the main menu
19 Alarm (CSU Status) Acti ve when an alarm con dition has been detected on the

network interface

Figure 3-1. TSU 120 Front Panel Layout

61202129L1-1 TSU 120 User Manual

3-3

Chapter 3. Operation

DSU/DSX Status

The DSU/DSX status LEDs display the operational condition
of the Nx56/64 and DSX-1 parts included in the TSU 120. It
also reflects the status of the DBU in the TSU 120e.

OK (

GREEN

Indicates the operation is in the normal mode

)

and no errors have been detected.

EST

T

YELLOW

(

Indicates that one of the interfaces is operating
in a test mode. This includes a self-test or a test

)

loopback. When lighted, this LED also indicates
that normal data flow is not occurring in at least
one of the module ports.

LARM (RED

A

Indicates an alarm condition has been detected.

)

When the alarm condition is no longer valid, the

OK LED

activates (turns on). To view an alarm
condition, select the active alarm menu item or
select Alarm by pressing

Shift+8. If the alarm

conditions have been corrected, the alarm
which caused the activation of the Alarm LED
can be viewed under the Unit History Menu.

Module Status

The module status LEDs display the operational condition of
ports installed in the option slots.

OK (

GREEN

Indicates the operation is in the normal mode

)

and no errors have been detected.

EST

T

YELLOW

(

Indicates that one of the interfaces is operating
in a test mode. This includes a self-test or a test

)

loopback. When lighted, this LED also indicates
that normal data flow is not occurring in at least
one of the module ports.

3-4

TSU 120 User Manual 61202129L1-1

Chapter 3. Operation

LARM (RED

A

Indicates an alarm condition has been detected.

)

When the alarm condition is no longer valid,
the OK LED activates (turns on). To view an
alarm condition, select the active alarm menu
item or select Alarm by pressing
alarm conditions have been corrected, the alarm
which caused the activation of the Alarm LED
can be viewed under the Unit History menu.

Operation Keys

C

OPY

Used in the DS0 mapping menu operations to copy
the last data entered into the current DS0. This key
operates without pressing the

H

OME

Returns home to the Main Menu from any menu
location.

LARM

A

Used as quick access to the active alarm display
menus. This can be activated while any other menu
item is in use. When the Alarm menu is exited, the
unit returns to the location of the same menu that
was active when Alarm was selected.

C

LEAR

Used in various menus to clear data/result fields.

General Menu Operation

Shift 8. If the

Shift key.

The TSU 120 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 scrolling with the

ATA FIELD

D

ISPLAY

D

NLY FIELD

O

You can edit menu items followed by a colon (:).
You cannot edit menu fields followed by an

equal symbol (=). This symbol identifies a field
used for value display only.

RROWS

A

Menus that display small up or down arrows in
the lower right corner indicate there are more
menu items than are visible on a two-line LCD.
Access the additional items with the up or down
arrows. You can also access undisplayed menu
items by using the appropriate menu number.

61202129L1-1 TSU 120 User Manual

Up and Down arrows.

3-5

Chapter 3. Operation

Select and Activate a Menu Item

To choose menu items, place the cursor on the desired menu
item by pressing the number corresponding to the menu item
or highlighting the menu item with the
Activate the
using the following steps.

up and down arrow.

LARM LIST

A

option from the

TATUS MENU

S

Step Action

1 Activate the

pressing

1. The cursor will flash on the number next

STATUS MENU

using the arrow keys or by

to the activated selection.

2 Press

Enter.

3 View the submenu items by using the
4 Choose an item on the submenu such as

ALARMS

5 Select the submenu with the

pressing

6 Press
7 View the Alarm List by using the

.

Enter.

Arrow Keys or by

3.

arro w ke ys.

by

arrow keys.

ACTIVE

3-6

.

1) NI PERF RPTS

2) NI ERRORS

3) ACTIVE ALARMS (ALARM LIST)

4) VIEW HISTORY END OF LIST

1)STATUS

5) PORT STATUS

6) REMOTE PORT

7) CLEAR PORT ALM

8) ENET STATUS

9) SLIP STATUS

Figure 3-2. Example of Basic Front Panel Menu Tree

TSU 120 User Manual 61202129L1-1

Chapter 3. Operation

Set the Data Field

You can edit data fields preceded by a colon (:).

Step Action

1 Position the cursor on the submenu item number, and

press

Enter. The cursor moves to the data field, (to the

right of the submenu item name).

2 Using the

Arrow Ke ys, scroll to scan the available value

settings. The value settings display one at a time in the
data field position.

3 When the desired value is displayed in the data field

position, press

Enter to set that value. When the value

is set, the cursor moves back to the submenu item
position indicating the operation is complete.

4 Select another submenu field, or press

Cancel to return

to the submenu.

5 Press

Cancel before pressing Enter to void any data

changes. The original data value is restored and the
cursor returns to the submenu field.

Display Only Data Fields

Data fields preceded by an equal (=) symbol cannot be edited.
See Figure 3-3.

Figure 3-3. Display and Data Fields

Press

Enter to move the cursor to the data field. Use arrows to

select

and press Enter. The unit automatically sets the

AUTO

Line Build Out. The display field shows the value actually set.

61202129L1-1 TSU 120 User Manual

Data Field

Display Field

3-7

Chapter 3. Operation

The equal symbol after LBO in the second line indicates the
information that follows is displayed data and cannot be
edited.

Exit Any Menu Field Operation Or Display

Press

Cancel

as many times as needed to return to the desired

menu level or press

Data Port Identification

When configuring the unit, menu selections will include
options from data port submenus. Selecting data ports is neces­sary because the TSU 120 uses a slot-port method to identify
which data port the menu item is referencing. If a module con­taining a PBX DSX-1 option card with an Nx56/64 plug-on
interface is installed in the option slot, it would be designated
as:

DSX-1 Passthru=1.1

Where slot=1 and port =1.
The DSX-1 is located in the option slot and is the first port in
that slot.

Nx56/64=1.2

Where slot=1 and port=2.
The Nx is located in the slot and is the second port in that
slot.

The ports that are built into the TSU 120 are referenced as Slot

0. The Nx56/64 would be designated as 0.1 and the DSX-1
would be referenced as 0.2.

Shift+0 (Home) to return to the main menu.

3-8

TSU 120 User Manual 61202129L1-1

Front Panel Menu Structure

The TSU 120 uses a multilevel menu structure containing both
menu items and data fields. All menu operations and data dis­play in the LCD window.

The opening menu is the access point to all other operations.
Each Main menu item has several functions and submenus to
identify and access specific parameters.

The front panel LCD of the Main menu contains the following
options

1=STATUS 3=UTIL
2=CONFIG 4=TEST

Status

The Status menu displays all relevant information for the net­work and DTE interfaces. For detailed information on status
options, see Chapter 4, Status Menu on page 4-1.

Config (Configuration)

Chapter 3. Operation

The Configuration menu displays and sets the TSU 120 opera­tional configuration, including all network interface parame­ters, the allocation of the DS0s, and the port parameters. For
detailed information on configuration options, see Chapter 5,
Configuration Menu on page 5-1.

Util (Utilities)

The Utility menu displays and sets system parameters. For
detailed information on utility options, see Chapter 6, Utility
Menu on page 6-1.

Tes t

The Test menu initiates different types of unit tests and dis­plays test results in the LCD window. For detailed information
on test options, see Chapter 7, Test Menu on page 7-1.

61202129L1-1 TSU 120 User Manual

3-9

Chapter 3. Operation

Alternate Methods of Control

T-WATCH Pro (ADTRAN PC Program)

T-WATCH Pro is the ADTRAN PC control program. It provides
complete control over the configuration of the TSU 120 using a
graphical interface. The T-WATCH Pro program displays the
same status and performance data as the front panel LCD. This
data is displayed in the form of tables and graphs.

The T-WATCH Pro program has the following capabilities:

• Interfaces with a modem which permits dialing into a re­mote TSU 120 location to configure the unit or read the sta­tus or performance of the unit.

• Receives traps from any TSU product.

• Records and creates display performance data over a 30­day period.

• Accesses units via the local area network (TSU 120e only).

T-WATCH Pro/LAN Connection

To set up the TSU 120 to work with T-WATCH Pro over the
LAN, follow these steps:

3-10

Step Action

1 Set the Unit ID using the front panel. See Unit ID on

page 6-4 for details.

2 Set

ONTROL PORT

C

interface to

N

ORMAL

using the

Front Panel

3 Configure the

SUBNET MASK

ADDRESS, DEFAULT GATEWAY

IP

using the front panel.

, and

4 Follow the installation instructions for T-WATCH Pro

to start the program and connect to the unit.

TSU 120 User Manual 61202129L1-1

SNMP

Chapter 3. Operation

T-WATCH Pro/EIA-232 Connection

To set up the TSU 120e to work with T-WATCH Pro over a
direct EIA-232 connection, follow these steps:

Step Action

1 Set the Unit ID and set a passcode using the front

panel. See Unit ID on page page 6-4 and Set a Passcode
on page 6-4 for details.

2 Set the control port rate to the same setting as the PC

Com port.

3 Connect the PC Com port to the chain-in port on the

TSU 120 using the DB25 adapter and modular cable
provided.

4 Follow the installation instructions for T-WATCH Pro

to start the program and to connect to the unit.

The ADTRAN TSU 120 supports the Simple Network Manage­ment Protocol (SNMP) through the chain-in (SLIP) interface.
The TSU 120e offers a 10BaseT connection which also supports
SNMP. For more information on SNMP see Appendix A, Under-
standing SNMP on page A-1.

To use SNMP via 10BaseT (TSU 120e only), follow these steps:

Step Action

1 Set

ONTROL PORT

C

2 Set the

.

MASK

ADDRESS, DEFAULT GATEWAY

IP

to

3 The appropriate MIB browser must be loaded into the

Network Management Station (available on the
ADTRAN webpage at http://www.adtran.com).

4 The MIB browser issues SNMP gets/sets to the TSU

120e.

61202129L1-1 TSU 120 User Manual

N

ORMAL

.

, and

SUBNET

3-11

Chapter 3. Operation

To use SNMP via SLIP port, follow these steps:

Term in al M ode

The TSU 120 provides the front panel menus to a VT 100-type
terminal. This mode can be used to configure and monitor the
unit. Initiate this mode by keying in
nal once it is connected to the chain-in port. For more informa­tion on this method of control, see Chapter 8, Telnet/Terminal
Menus on page 8-1.

Step Action

1 Set

ONTROL PORT

C

2 Set the

SUBNET MASK

ADDRESS

IP

to

. The

.

SLIP

DEFAULT GATEWAY

are not used in SLIP.

, and

3 The appropriate MIB browser must be loaded into the

Network Management Station (available on the
ADTRAN webpage at http://www.adtran.com).

4 The MIB browser issues SNMP gets/sets to the TSU

120e.

<CTRL> PTT

on the termi-

3-12

TELNET

To connect to the TSU 120 via TELNET, follow these steps.

Step Action

1 Before attempting to connect via TELNET, first define

the IP address, the default gateway, and the subnet
mask using the front panel.

2 When you begin the TELNET session, you will be

prompted for a password. The default password is

ADTRAN

.

3 You can change this password using the Management

submenu. See Default Unit Passcode on page 8-7 for
more information.

4 The TELNET session will time out after a predefined

value that is also set in the Management menu.

Only one TELNET session can be active at one time.

TSU 120 User Manual 61202129L1-1

Chapter 4

1) NI PERF RPTS ES

2) NI ERRORS UAS

1)STATUS

3) ACTIVE ALARMS (ALARM LIST)

4 )VIEW HISTORY (HISTORY LIST)

5) PORT STATUS 0.1 Nx56/64 2) DTE STATUS

6) REMOTE PORT

7) CLEAR PORT ALM

8) ENET STATUS

Status Menu

The Status menu branch provides the ability to view the status
of the TSU 120 operation. See Figure 4-1.

%AS
%EF

SES

END OF LIST

END OF HISTORY

1) DTE DATA/CLOCK

3) PORT RATE

4) DBU DATA/CNTR (TSU 120e)

5) DBU CONTRL (TSU 120e)

6) DBU STATUS (TSU 120e)

0.2 DSX-1 DSX-1 ERRORS

(OPTION LIST)

Figure 4-1. Complete Status Menu Tree

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

Cancel returns the system to the previous menu

Cancel repeatedly returns the system to the main

menu.

61202129L1-1 TSU 120 User Manual

4-1

Chapter 4. Status Menu

Network Performance Reports (NI PERF RPTS)

The Network Interface Performance Reports display the user
copy of the performance data. The TSU 120 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.

Use the scroll keys to access the complete display of the follow­ing report fields, as shown in Figure 4-2:

15 Minutes

24 Hours

Data Values

4-2

Figure 4-2. Network Interface Performance Report

Percentage of available seconds

AS

%

Percentage of error-free seconds

EF

%

ES

Number of errored seconds (1 or more
errors/second

SES

Number of severely errored seconds (more
than 320 errors/second)

UAS

Number of unavailable seconds (10 or
more consecutive seconds)

If insufficient time has passed to collect data,

displays.

NA

Continue with standard operating procedures to exit the dis­play.

When this menu is active, performance data can be cleared by
pressing

Clear (Shift+9)

on the keypad. Only the user copy of

the performance data is cleared.

TSU 120 User Manual 61202129L1-1

Since only the user’s copy of performance data is cleared by the
TSU 120, the data displayed here might be different from the
data sent to the network as PRM data.

Network Interface Errors (NI ERRORS)

Chapter 4. Status Menu

The
work Interface (NI) detects. A blinking CSU error LED indi­cates that network errors are detected.

The asterisk (*) above an item indicates the type of errors
detected. The error types are the following:

Active Alarms

This menu item displays a list of current alarms (
reported by either the base controller or any of the ports. If no
alarms are current, using this menu item displays

This display includes two lines of text. The top line is the alarm
source. The bottom line is the alarm message. See Figure 4-3 on
page 4-4. A list of alarm messages is found in Appendix C, TSU
120 System Messages on page C-1.

NI ERRORS

CRC

BPV
XS

0

FER

submenu displays the types of errors the Net-

CRC-6 bit errors based on the FDL. This is valid
only in ESF mode.

Bipolar violations.
Excess zeros.
Framing errors.

LARM LIST

A

End of List

)

.

In addition to normal menu operation, you can also access this
menu item with the Alarm function (
one or more of the Alarm LEDs are illuminated, an alarm is
present. Pressing

61202129L1-1 TSU 120 User Manual

Cancel returns to the previous menu item.

Shift+8) on the keypad. If

4-3

Chapter 4. Status Menu

Figure 4-3. Display of Alarm Message

View History

This menu item both displays and clears the accumulated sta­tus changes of the unit.

View History displays a history of the first 20 status changes in
the unit, including the date, time, and type of change. The unit
also records for viewing, the date and time an alarm became
active and inactive, as well as the date and time of test activa­tion and deactivation.

Alarm Source

Alarm Message

Port Status

4-4

To clear the View History display, press

Clear (Shift+9)

with the

View History menu active.

Port Status displays the signals monitored on the data ports.
For example, the Nx/DBU interface monitors the RTS, CTS,
and RD, along with other signal lines. When a port is selected,
the LCD indicates if the signal is present.

The base Nx interface offers the status screen listed in this sec­tion. When using other option cards, refer to the appropriate
separate manual for a definition of any status screens offered.

The Port Status of Nx/DBU is examined as an example of how
to use this item. The DBU feature is available only in the
TSU 120e.

TSU 120 User Manual 61202129L1-1

0.1 Nx56/64 Menu Items

DTE Data/Clock

An asterisk (*) indicates an active status of the following lines.

Chapter 4. Status Menu

TXD
RXD
XS
LCK

0

Transmit data from the DTE
Receive data toward the DTE
Excess Zeros from the DTE
Lock Status of the phase locked loop

DTE Status

An asterisk (*) indicates an active status of the following lines:

RTS
CTS
DCD
DSR

Request to send from DTE
Clear to send to DTE
Data carrier detect to DTE
Data set ready to DTE

Port Rate

The port rate displays the current setting of the Nx port. Con­tinue with standard operating procedures to exit the display.

DBU Data/CNTRL (TSU 120e only)

An asterisk (*) indicates an active status on the following lines:

TXD
RXD
DCD
RI

61202129L1-1 TSU 120 User Manual

Transmit data to the DCE
Receive data from the DCE
Data carrier detect from the DCE
Ring indicate from the DCE

4-5

Chapter 4. Status Menu

DBU Contrl (TSU 120e only)

DBU Status (TSU 120e only)

RTS
CTS
DTR
DSR

Request to send to DCE
Clear to send from the DCE
Data terminal ready to the DCE
Data set ready from the DCE

DBU SECS
IN DBU

0.2 DSX-1 Menu Items

DSX-1 Errors

CRC

An asterisk displays under the CRC if there are
CRC errors in extended superframe format
(ESF) mode. If the DSX-1 plug-on board is
configured for D4 Frame format, the LCD
displays n/a.

BPV

An asterisk displays under the BPV if the DSX-1
plug-on board detects bipolar violations.

SLIP

An asterisk displays under the SLIP if the DSX-1
plug-on board detects frame slips. This is
caused by multiple clock sources in the
application.

FER

An asterisk displays under the FER if the
DSX-1 plug-on board detects frame bit
synchronization errors.

Total seconds in current DBU session
YES/NO indication of active DBU status

4-6

TSU 120 User Manual 61202129L1-1

Remote Port

Remote Port displays the status of activity on the control-in
remote port. This is useful for troubleshooting communication
sessions, and for verifying cabling.

Characters received at remote port

RX

Unit ID received at remote port

ID

Correct CRC received

CRC

Correct passcode received

PC

Characters transmitted from the remote port

TX

Clear Port Alarm (Clear Port Alm)

Clears the Link Failed alarms on option modules that have
been removed from the TSU 120 chassis.

ENET Status (TSU 120e only)

Indicates that data is being transmitted from the

TX

10BaseT port.
Indicates that data is being received by the

RX

10BaseT port.
Indicates the current status of the 10BaseT link

LNK

integrity test. This should always be on when the
unit is connected to a functional 10BaseT hub.

Active when the CPE is accessing the 10BaseT

CPU

interface.

Chapter 4. Status Menu

61202129L1-1 TSU 120 User Manual

4-7

Chapter 4. Status Menu

4-8

TSU 120 User Manual 61202129L1-1

Chapter 5

Configuration Menu

The

ONFIGURATION MENU

C

uration, including all network interface parameters, the alloca­tion of the DS0s, and the port parameters. See Complete
Configuration Menu on page 5-2.

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

M

Cancel returns the system to the previous menu level.

Cancel repeatedly returns the system to the

.

ENU

sets the TSU 120 operational config-

AIN

M

61202129L1-1 TSU 120 User Manual

5-1

Chapter 5. Configuration Menu

1) FORMAT 1) CTL PORT RATE

2) CODE 2) TRAPS

3) YEL ALARM 3) ACCESS

4) XMIT PRM 4) INIT MODEM

5) TIMING MODE 5) CONTROL PORT

1) NETWORK (NI) 6) SET LBO 6) IP ADDRESS

7) INBAND LPBCK ALARM REPORTS 7) SUBNET MASK

8) BIT STUFFING ALARM FORMATS 8) DEFAULT ROUTER

9) TR-08 OPTIONS BPV THRESHOLD 9) SLIP RATE

2) UNIT A) SLIP FLOW CTL

3) MAP XCHNG OFF

AUTO

4) MAP IN USE: A(B ) 1) MAP A @:HH:MM

2) MAP B @:HH:MM

3) CONFI G 5)DS0 MAP A 1) COPY A > TEMP

2) CREATE TEMP 1) DSO RATE

1) COPY B > TEMP 3) REVIEW MAP A 2) TX CLK CNTRL

2) CREATE TEMP 4) REVIEW TEMP 3 ) DATA

6) DS0 MAP B 3) REVIEW MAP B 5) EDIT TEMP 4) CTS

4) REVIEW TEMP 6) APP LY TEMP > A 5) DCD

5) EDIT TEM P 6) DSR

6) APPLY TEMP > B 0.1 Nx56/ 64 Config 7) “0” INHI BIIT

7) PORT CONFIG Nx56/64 (0.1) 9) TX CLK SOURCE

B) PROXY TRAPS

8) INBAND MODE

5-2

THIS SECT ION APPLIES ONLY TO THE TSU 120e

DBU Config 1) BACKUP MODE

2) BACKUP ON

02. DSX-1 1) FORMAT 3) PATTRN VERIFY
(OPTION PORTS) 2) CODE 4) BACKUP DELAY

3) YELLOW ALARM 5) RESTORE DELAY

4) LINE LENGTH 6) RET RY DELA Y

5) INBAND LPBACK 7) NUM RETRIES

6) ROB BIT SIGNL 8) BACKUP TESTING 1) BACKUP TEST

9) WKEND LOCKOUT 2) TEST HOUR
A) ENABLE HR 3) TEST DAY
B) DSABLE HR
C) TRAP IN DBU

Figure 5-1. Complete Configuration Menu

TSU 120 User Manual 61202129L1-1

NETWORK (NI)

This menu item accesses the configuration of parameters asso­ciated with the network interface in the base unit. There are
nine submenu items that include setting the format, the line
build out (LBO), and the timing mode. Submenu items do not
include setting the parameters which may be necessary for a
secondary interface (DSX-1 Passthru, etc.).

Network (NI) Menu Items

The menu items are:

Menu Item Description

FORMAT Sets the frame format for the NI.

Choices: D4, ESF, and SLC96

D4 is equivalent to superframe format (SF).

CODE Sets the line code for the NI.

Chapter 5. Configuration Menu

Choices: AMI and B8ZS.

YEL ALARM Enables and disables the transmitting of yellow alarms.

Choices: ENA and DISA.

XMIT PRM Enables and disables the sending of PRM data on the

facility data link (FDL). The PRM data continues to be
collected even if

XMIT PRM

with ESF Format).

Choices: Off and On.

TIMING
MODE

Selects the clock source for transmission toward the
network from the NI. See TSU 120 Clock Sources on page
5-5 for more information

Choices: Network, DTE (Slot 1), Normal (CSU), U­BR1TE (Slot 1), Internal, Secondary (SI).

61202129L1-1 TSU 120 User Manual

is disabled (possible only

5-3

Chapter 5. Configuration Menu

Menu Item Description

SET LBO Selects the line build out for the network interface. In

AUTO MODE

strength of the receive signal and displays the selected
value.

Choices: 0.0 dB, 7.5 dB, 15 dB, 22 dB, Auto.

This feature is useful in a point-to-point application
where no network elements are involved. If a network
element such as a Smart Jack is installed on the circuit,
the LBO should be set to 0 dB.

INBAND
LPBCK

Sets unit to accept or reject the network interface loop­up and loop-down codes as defined in ANSI T1.403.

Choices: Accept, Reject.

BIT
STUFFING

When enabled, bit stuffing causes the TSU 120 to
monitor for ones (1s) density violations and insert a one
(1) when needed to maintain 1s at 12.5 percent.

, the TSU 120 sets the LBO based on the

In order to activate the -36 dB receiver sensitivity, the
LBO should be set to

AUTO

.

5-4

Choices: Enable, Disable.

TR-08 The TR-08 submenu configures the unit for TR-08

applications. The submenu items and their descriptions
follow.

Alarm Report

Enables and disables the transmitting of alarm reports.
Choices: SEND ALARMS, DISABLE ALARMS

Alarm Format

Sets the alarm frame format to 13 frames or 16 frames.
Choices: ORB-13, ORB-16

BPV Threshold

Sets the threshold for BPVs to trigger an alarm.
Choices: 10-4, 10-5, 10-6

TSU 120 User Manual 61202129L1-1

TSU 120 Clock Sources

The TSU 120 is operable from various clock sources permitting
it to perform properly in many different applications. Set the
network interface clocking options with the clocking options
set by the Network (NI) Configuration menu options.

The following clock source options are available:

• Network

• Base DSX-1 Timing

• DTE Timing

• Internal Timing

•Secondary Timing

• Normal (CSU) Timing

•U-BR1TE

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

Chapter 5. Configuration Menu

61202129L1-1 TSU 120 User Manual

5-5

Chapter 5. Configuration Menu

Network Timed

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 loop
timed as the transmission clock is derived from the received
clock. See Figure 5-2.

.

5-6

Figure 5-2. Network Timed Clock Source

TSU 120 User Manual 61202129L1-1

Base DSX-1 Timing

The PBX is the source of timing. The TSU 120 uses the clock
derived by the Base DSX-1 interface for transmission timing.
See Figure 5-3.

T1 XMIT

(DS1)

T1 Receive

Network

Interface

Chapter 5. Configuration Menu

OSC

(OPTION)

Nx56/64

DTE CLOCK

DTE

DSX-1

PBX

Figure 5-3. DSX-1 Timed Clock Source

61202129L1-1 TSU 120 User Manual

5-7

Chapter 5. Configuration Menu

DTE Timing

The DTE is the source of timing. The TSU 120 uses the incom­ing DTE clock to determine the transmission timing. This is
typically used in applications where it is necessary to have the
DTE as the primary clock source, (such as limited distance line
drivers). See Figure 5-4.

T1 XMIT

(DS1)

T1 Receive

Network

Interface

OSC

(OPTION)

Nx56/64

DTE CLOCK

DTE

DSX-1

PBX

Figure 5-4. DTE Timed Clock Source

5-8

TSU 120 User Manual 61202129L1-1

Internal Timing

The TSU 120 is the source of timing. The TSU 120 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.

T1 XMIT

(DS1)

T1 Receive

Network

Interface

Chapter 5. Configuration Menu

OSC

(OPTION)

Nx56/64

DTE CLOCK

DTE

DSX-1

PBX

Figure 5-5. Internal Clock Source

61202129L1-1 TSU 120 User Manual

5-9

Chapter 5. Configuration Menu

Secondary Timing

The secondary interface is the source of timing. The TSU 120
uses the clock derived by the secondary interface for transmis­sion timing and the receive signal timing. See Figure 5-6.

Either a DSX-1 Option Module or a Drop and Insert Option
Module must be installed in the TSU 120 for this mode to func­tion.

OSC

T1 XMIT

(DS1)

T1 Receive

Network

Interface

(NI)

Nx56/64

DTE CLOCK

DTE

DSX

PBX

Figure 5-6. Secondary Timing

Secondary

Interface

(SI)

(OPTION)

(IO PB)

PBX

5-10

TSU 120 User Manual 61202129L1-1

Normal (CSU) Timing

In the Normal (CSU) Timing mode, the Receive Clock is
derived from the Network Interface while the Transmit Clock is
derived from the PBX or other alternative timing source, con­nected to the Secondary Interface (e.g., Drop and Insert or
DSX-1). See Figure 5-7.

This timing option is the same as that typically used for CSUs.
This is the preferred mode for use with a PBX application.

Chapter 5. Configuration Menu

U-BR1TE

Network

Interface

(NI)

Secondary

Interface

(SI)

(OPTION)

Figure 5-7. Normal (CSU)

The network interface and secondary interface clocking options
are set by using the Network (NI) Configuration menu options.
Either a DSX-1 Option Module or a Drop and Insert Option
Module must be installed in the TSU 120 for this mode to func­tion.

The U-BR1TE timing selection works like Normal (CSU) except
that timing is derived from the U interface on port 1.1.

61202129L1-1 TSU 120 User Manual

5-11

Chapter 5. Configuration Menu

Unit Menu

The Unit menu changes the baud rate of the chain in port and
the setup of the dial out port. The menu items are:

Menu Item Description

CTL PORT
RATE

TRAPS Enables or disables the transmission of trap

ACCESS Sets the method of connection from the

INIT MODEM Allows you to choose an industry standard

Sets the baud rate for communication with
the PC or modem.

Choices: 1200, 2400, 9600, 19200, and 38400
kbps

messages.

Choices: Enable, Disable

TSU 120 to T-WATCH Pro/SNMP

Choices:
Direct - Used if connected directly to the PC.

Dial - Used when connection is through a
modem. The dial string is entered from
T-WATCH Pro/SNMP.

or a custom initialization string for a modem
connected to the control port.

5-12

CONTROL
PORT

Choices: Industry Standard, Custom
Initialization String

Selects the TCP/IP physical interface;
Normal, using the 10BaseT Ethernet or SLIP
using the EIA-232 serial port (10BaseT is only
available in the TSU 120e).

Choices: Normal, SLIP

If this option is set to SLIP, the EIA-232
port may not be used as a terminal inter­face.

TSU 120 User Manual 61202129L1-1

Chapter 5. Configuration Menu

Menu Item Description

IP ADDRESS This is the IP address that uniquely identifies

the TSU 120 on a TCP/IP network.

This address is composed of four decimal
numbers, each in the range of 0 to 255,
separated by periods. This value is used for
either the 10BaseT Ethernet or SLIP interface,
depending on the IP interface setting
(10BaseT is only available in the TSU 120e).

SUBNET
MASK

This defines which part of a destination IP
address is the Network number. It is used
along with the TSU 120 IP address to
determine which nodes must be reached
through the default IP Gateway. This value is

DEFAULT
ROUTER

ignored when the IP interface is set to
All IP Packets destined for nodes not on the

TSU 120 unit’s local network are not

SLIP

.

forwarded through this IP address.
Normally, this address defines a router
connected to the TSU 120 unit’s local
network. This value is ignored when the IP
interface is set to

SLIP

.

SLIP RATE This sets the baud rate for the Chain-In port

when used as the SLIP connection for SNMP
management.

Choices: 1200, 2400, 4800, 9600, 19200, 38400
Kbps

SLIP FLOW
CTL

This is used to activate flow control on the
Chain-In port when used as the SLIP
interface. Hardware mode uses RTS and CTS.

Choices: None, Hardware

PROXY TRAPS This determines whether or not traps will be

forwarded from units being “proxied” for.

Choices: Enable, Disable

61202129L1-1 TSU 120 User Manual

5-13

Chapter 5. Configuration Menu

Map Exchange (Map Xchng)

The

M

AP EXCHANGE

menu enables and sets the automatic time
of day map switch. The unit provides selection of the hour,
minute, and seconds for the map switching to take place.

The menu items are:

Menu Item Description

OFF

Indicates the map in use does not change
(disabled).

AUTO Indicates that the map in use will change at a

user-selected time of day (enabled).

1. Scroll to select

AUTO

to enable or

to disable the

OFF

Automatic Map Change feature.

2. Press

3. When

Enter to activate the selection.

is selected, the unit displays the screens to

AUTO

set times for switching.

4. After editing Map A, press

Enter to record the Map A

settings and activate the selection fields for Map B.

5. Use the same operation to edit switching time for
Map B.

When ESF is used with an FDL channel between units, the
units automatically coordinate the automatic map switch by
sending a map switch command from end-to-end over the
FDL. Only one end needs to be set to Auto for this to work.

Map In Use: A(B)

The

AP IN USE

M

uses and displays the map in current use.

5-14

menu item controls the DS0 map the TSU 120

TSU 120 User Manual 61202129L1-1

DS0 Map A and DS0 Map B

The DS0 maps designate which DS0s are assigned to which
port. See Figure 5-8. There are three maps,

, and the

M

AP

B

EMPORARY

T

TEMP

MAP A MAP B

Figure 5-8. DS0 Map Designations

Map A and Map B are the current maps the TSU 120 uses. The
Temp map generates a map before putting it into use.

You can copy Map A to Map B by copying the Map A into the
TEMP map. Then apply (write) the TEMP map into Map B.

EMP) MAP

(T

Chapter 5. Configuration Menu

AP

DS0 M

A, DS0

.

The menu items are:

Menu Item Description

COPY A (B) >TEMP This copies the current map (A or B) into a

Temp Map area. This permits modification
without disturbing the existing map. When
the modifications are completed, the Temp
Map is written to current
selecting

Apply

CREATE TEMP This creates a map by defining a port or Idle

for all DS0s. When
selected, all DS0s are set to
Example on page 5-16 for more information.

REVIEW MAP A(B) Permits a quick review of the number of

DS0s assigned to each port and the number
of unassigned DS0s (
in the currently applied Map A(B).

61202129L1-1 TSU 120 User Manual

.

CREATE TEMP

Idle or TST

MAP A (B

See DS0 Map

Idle.

by

)

is first

) as defined

5-15

Chapter 5. Configuration Menu

Menu Item Description

REVIEW TEMP This menu item is operated the same for the

EDIT TEMP The map in the Temp file can be edited to

APPLY TEMP> A(B) Writes the Temp map into

DSO Map Example

A sample selection follows:

Tem p Ma p as i s

REVIEW MAP A

3)

or

MAP B

.

whatever configuration is desired. If Map A
had been copied into the Temp file, then after
editing, the Temp file could be applied to

or

MAP A

identical to

. The menu operation is

MAP B

CREATE TEMP

2)

with the
exception that the existing port selections
display.

MAP A

.

Apply

is
usually the last step in updating a map and is
accessed automatically at the end of editing
or creating a temporary map. Currently, it
can be bypassed by selecting another menu
choice.

5-16

DS0: 01 to 24
PORT: IDLE, TST, + option module ports

TST designates which DS0s are used for QRSS testing when
activated under the

TEST MENU

TST designation is identical to

TSU 120 User Manual 61202129L1-1

.

When not used for testing, the

.

Idle

Chapter 5. Configuration Menu

With the cursor on

CREATE TEMP

, press Enter. The unit displays

the selection screen with the cursor positioned on the first
selection DS0 number. See Figure 5-9.

Select DS0 Number

Select Port

Figure 5-9. Create Temp Selection Screen

1. Use either the

Arrow Keys or Numbers to enter the DS0

number (do not mix the use of the keys).

2. Press

Enter to complete the selection and move the cur-

sor to Port, the next field.

3. Scroll to select the port which is dependent on the
installed option card.

4. Press

Enter to complete the selection and move the

cursor back to the DS0 field.

5. With the cursor on the DS0 field, the DS0 number can
be incremented or decremented by scrolling.

6. Press

Copy to place the contents of the last DS0 in the

new DS0 number.

7. When all entries are complete, press
the cursor to the last of the submenu choices,

Cancel to move

6

8. Either apply the newly created DS0 map or press

ANCEL

C

to return to the

DS0 MAP A (B

submenu

)

choices.

APPLY

)

.

Selecting

will not disrupt the operation of unmodified

Apply

ports.

61202129L1-1 TSU 120 User Manual

5-17

Chapter 5. Configuration Menu

Port Configuration (Port Config)

Port Configuration selects and configures the parameters asso­ciated with any data port in the unit. For example, parameters
for the DSX-1 (PBX) interface are set through this menu. The
items that can be set depend on which option module is
installed. The list of option ports will vary with the configura­tion.

The TSU 120 is designed so that any additional ports devel­oped in the future will contain the appropriate menu selections
to provide access by use of this menu item.

The Config menus for options ports are described in separate
sections of the manual supplied with the option card.

0.1 Nx56/64 Port Configuration (Port Config) Menu Items

There are two major menu items under Nx/DBU configura­tion:

X

N

56/64 C

offers the DBU feature.

Nx56/64 Menu Items

ONFIG

and

DBU C

. Only the TSU 120e

ONFIG

5-18

Menu Item Description

DS0 RATE This sets the base rate of the interface. The

actual data rate depends on the number of
DS0s assigned to the Nx port.

Choices: 56K, 64K

TX CLK CNTRL Controls the clock used by the TSU 120 to

accept transmit (TX) data from the DTE. The
default is normal. If the interface cable is
long, causing a phase shift in the data, the
clock can be selected as Invert. This switches
the phase of the clock which should
compensate for a long cable.

Choices: Normal, Invert

TSU 120 User Manual 61202129L1-1

Chapter 5. Configuration Menu

Menu Item Description

DATA 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 1s density.

Choices: Normal, Invert

If

Invert

is selected,

zero (0) inhibit

should also be selected to prevent an
open DTE input from placing zeros on
the network.

CTS Used to control characteristics of CTS.

Choices: Normal*, Force On
*See Table 5-1 on page 5-20.

DCD Data Carrier Detect. Indicates to the DTE

when a valid signal is being received at the
Network Interface.

Choices: Normal*, Force On
*See Table 5-1 on page 5-20.

DSR

Data Set Ready. This signal indicates to the
DTE when the DCE is turned on and ready
for operations.

Choices: Normal*, Force On
*See Table 5-1 on page 5-20.

0 INHIB The Nx interface will detect an uninterrupted

string of zeros (0s) being transmitted toward
the network. If 0s are transmitted for >1
second, the TSU 120 will force 1s.

Choices: On, Off

61202129L1-1 TSU 120 User Manual

5-19

Chapter 5. Configuration Menu

Menu Item Description

INBAND MODE The Nx56/64 port is capable of providing an

TX CLK SOURCE This controls the source of the clock used by

Table 5-1. Normal Mode of Operation

inband communications channel (for T­Watch and SNMP) between units. This is
accomplished by using 8 kbps of the first DS0
assigned to that particular Nx56/64 port. If
in 56 K mode, no data bandwidth will be
used. Inband must also be enabled at the
destination port.

Choices: On, Off, On Demand

the TSU 120 to accept transmit data from the
DTE. The default is

INTERNAL

. If the
application requires that the DTE device
provides the clock with the transmit data, the

EXTERNAL

setting is used.

Choices: Internal, External

Signal RTS V.54 Loop-

back

CTS Follows OFF OFF OFF OFF OFF OFF
DCD — — — OFF — OFF OFF
DSR — OFF OFF OFF OFF OFF —
Where “—” = don’t care
*Until backup becomes active

5-20

511 TST ONSelf Test

Active

TSU 120 User Manual 61202129L1-1

Netwk Test

Active

No DS0
Mapped

Network

Alarm

Chapter 5. Configuration Menu

DBU Configuration Menu Items (TSU 120e only)

Menu Items Description

BACKUP MODE In a backup condition, both ends of the circuit must

detect backup conditions before backup is acti­vated. One DBU is set to

ANSWER

Upon a network failure, only the Origi-

.

ORIGINATE

nate DBU initiates backup by dialing the Answer
end. Once called, the

Answer DBU

mode only if a backup condition is detected. This is
ideal for controlling where calls originate.

Choices: Disable, Originate, Answer

BACKUP ON Selects the conditions that cause the Nx/DBU to

initiate Backup.

and the other to

goes into backup

NET FAIL

Backup occurs on

ALARM

NET/DATA FAIL

Backup occurs on the same conditions as

:

, and

RED ALARM, YELLOW ALARM, BLUE

.

LOS

:

NET FAIL

plus loss of data transitions on the data the Nx56/
64 receives from the network.

PATTRN VERIFY Selects whether or not the DBU will use its pattern

generator and receiver to authenticate backup
attempts. When the local and remote units are both
Nx/DBUs, set to

ENABLE

; otherwise set to

DISABLE

Choices: Enable, Disable

BACKUP DELAY Selects the time allowed to elapse between the net-

work going into alarm or no data transmissions
and the backup beginning.

Choices: 1 sec, 3 sec, 10 sec, 30 sec, 1 min, 5 min,
10 min

,

.

61202129L1-1 TSU 120 User Manual

5-21

Chapter 5. Configuration Menu

Menu Items Description

RESTORE DELAY Selects the time that elapses between the network

going out of alarm or data and the backup call
being taken down. If
must deactivate the backup mode.

Choices: 1 sec, 3 sec, 10 sec, 30 sec, 1 min, 5 min,
10 min, never

RETRY DELAY Selects the time between redialing the external

DCE after failed dial attempts.

Choices: 10 sec, 30 sec, 1 min, 5 min, 10 min

NUM RETRIES Selects the number of times the DBU will attempt

to redial if unable to connect.

Choices: None, unlimited, 3 times, 10 times.

BACKUP
TESTING

Selects the options for the automatic ISDN verifica­tion feature of the Nx/DBU. Verification of the
backup circuit does not disrupt data on the T1.

is selected, the user

NEVER

WKEND
LOCKOUT

5-22

ACKUP TEST

B

:
Selects the frequency of automatic backup circuit
verification by the DBU.
Choices: Manual, Hourly, Daily, Weekly

EST HOUR

T

:
Selects the hour of the day the Backup test will
occur.
Choices: 0-23

EST DAY

T

:
If Weekly Backup test is selected, selects which day
to perform the test.

Choices: Monday - Sunday

If no backup is desired from midnight Friday to
midnight Sunday, set this selection to
wise set to

OFF

.

ON

; other-

Choices: On, Off

TSU 120 User Manual 61202129L1-1

Chapter 5. Configuration Menu

Menu Items Description

ENABLE HR The hour backup will be enabled. Enter from the

numeric keyboard.

Choices: 0-23

DISABLE HR The hour that the backup will be disabled. Enter

from the numeric keyboard.

Choices: 0-23

For these items to function properly, verify that
the time and date in the TSU are set correctly.
See Chapter 6, Utility Menu, Time/Date
section.

TRAP IN DBU If traps are enabled , this parameter will send either

a single trap upon going into a DBU session or
send repeated traps for the duration of the DBU
session.

Choices: Single, Repeated

0.2 DSX-1 Port Configuration (Port Config) Menu Items

The menu items are:

Menu Items Description

FORMAT

ORMAT

F

interface.

Choices: D4, ESF

CODE

C

ODE

interface.

Choices: AMI, B8ZS

YELLOW ALARM

YEL ALARM

yellow alarms.

Choices: Enable, Disable

61202129L1-1 TSU 120 User Manual

sets the frame format for the base DSX-1

sets the line code for the base DSX-1

enables and disables the transmitting of

5-23

Chapter 5. Configuration Menu

Menu Items Description

LINE LENGTH (FT)

IN-BAND
LOOPBACK
(INBAND LPBACK)

ROBBED BIT
SIGNALING
(ROB BIT SIGNL)

INE LENGTH

L

provides selection of the proper
output level for the base DSX-1 based on the length
of the interface cable.

Choices: 1-133 ft, 133-266 ft, 266-399 ft, 399-533 ft,
533-655 ft, -7dB

N-BAND LOOPBACK

I

sets the base DSX-1 to accept or
reject in-band loopup or loopdown codes (per
ANSI T1.403 specification) which may be sent to
the card over the DSX-1 interface. This loopback is
a line loopback.

Choices: Accept, Reject
This menu option is used to enable/disable

robbed-bit signaling. Whenever the base DSX-1
interface is connected to terminal equipment (i.e.,
PBX/SW56) for voice or dialed data services, this
option should be enabled. The only exception is
when the terminal equipment is using a form of
common channel signaling (i.e., PRI). For
applications requiring robbed-bit signalling as well
as a messaging channel (i.e., some proprietary PBX
channels), the

ON:DSOs 1-23

selection is provided.

5-24

Choices: OFF, ON: ALL DSOs, ON: DSOs 1-23

TSU 120 User Manual 61202129L1-1

Chapter 6

Utility Menu

The U

TILITY MENU

Figure 6-1 on page 6-2). This includes:

• setting the time and date,

• resetting all parameters to factory values, or

• re-initiating the unit.

This menu also displays the unit software revision and the Unit
ID setting.

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

Cancel to return the system to the previous menu level. Press-

ing

Cancel repeatedly returns the system to the M

tree displays and sets system parameters (see

AIN MENU

.

61202129L1-1 TSU 120 User Manual

6-1

Chapter 6. Utility Menu

TIME: HH:MM: SS

1) TIME/DATE D ATE: MM/DD/YY

(Returns all
configurations

2) F ACT RESTORE to factory settings)

3) SET PASSCODE NEW PASSCOD E

3) UTIL VERIF Y PASSCODE

4) UNIT ID

5) SOFTWARE REV (Displa ys Curre n t
Soft ware Revision

6-2

6) PORT UTILITY 0.1 Nx56/64

0.2 DSX-1

7) ENET ADDRESS (OPTION PORTS)

8) SERIAL NUMBER

9) CMD MODE

Figure 6-1. Complete Utility Menu Tree

TSU 120 User Manual 61202129L1-1

Time/Date

This menu option displays or edits the current time and date.
The TSU 120 maintains the time and date during power-off
conditions.

If you want to... Do this...

Record the entry and move to
the next editing position

Move to a different field to edit Press

Chapter 6. Utility Menu

Enter after any numeric change

Press

Enter at the editing position

without making any changes, or

Use the

End the editing process Press Cancel

Factory Restore (Fact Restore)

This menu item restores the factory default settings for all unit
parameters, including configured DS0 maps.

Set Passcode

Enter Passcode from Other Menus

The Passcode prompt may make an unexpected appearance
from other menu operations. This happens only when the unit
is operating in the limited access mode, i.e., without an active
passcode. The limited access mode may become active even if a
passcode was entered as it does when there is no activity for
ten minutes.

If the unit is to be remotely accessed using T-WATCH Pro, a
passcode must be entered. When managing a number of units,
the passcode can be the same for all.

The unexpected appearance of the Passcode prompt occurs, for
example, while operating in a limited access mode and
attempting to change the Data Rate,

, 1)

R

ATE

DATA RATE

passcode and press

. Use the Number Keys to enter the correct

Enter. The unit displays

and Down Arrow keys

Up

(2)

CONFIG

, 2)

A

CCESS GRANTED

UNIT

, 1)

CTL PORT

.

61202129L1-1 TSU 120 User Manual

6-3

Chapter 6. Utility Menu

Pressing any key after entering a passcode causes the unit to
return to the previous active menu. In this case it returns to

2)

CONFIG

rate.

Change/Set a Passcode

The passcode can be changed or set at any time or eliminated
altogether through the Utility Menu item
procedure requires the current passcode (if one is established)
for operation.

The passcode can only be entered by using numbers. After
entering the desired passcode, press

, 2)

UNIT

, 1)

CTL PORT RATE

, to permit changing the data

Enter.

3)

SET PASSCODE

. This

Unit ID

Set a null passcode at the

Enter without any numbers. This sets a null passcode and

grants unlimited access.

Passcode Automatic Time-out

For added security protection the unit is equipped with an
automatic time-out for operation with the password. After ten
minutes of inactivity, the unit reverts to limited access opera­tion. To make changes in the configuration, the passcode can be
reentered.

If the passcode number is lost, contact ADTRAN Customer Ser­vice for assistance.

No Passcode Desired

At the

Enter without any numerical entry. The system nullifies the

NEW P

ASSCODE

prompt (in the Set Passcode menu), press

need to enter a password for subsequent use and proceeds to
the

U

ID prompt.

NIT

This menu is used to access the current Unit ID setting. View­ing is available in limited-access mode. Editing or changing the
Unit ID requires the use of a password, as in editing mode. Unit
identification numbers must be between

3)

SET PASSCODE

menu by pressing

2 and 999.

6-4

TSU 120 User Manual 61202129L1-1

If an out-of-range number is entered, the unit assumes the
upper limit number of

999.

Set the Unit Identification

In the

U

ID M

NIT

value between

Press

Enter to record the Unit ID number and to establish its

(item 4) under the U

ENU

2 and 999. The number 1 is reserved for the PC.

availability for operation by remote control. The unit proceeds
to the

SET C

ONTROL PORT

prompt.

No Unit ID Desired

Press

Enter at the U

NIT

ID

PROMPT

The unit will not be able to be operated by remote control.

Software Revision (Software Rev)

This menu provides access to the display of the current soft­ware revision level loaded into the base unit controller. This
information is required when requesting assistance from
ADTRAN Customer Service or when updates are needed.

Chapter 6. Utility Menu

TIL MENU

without entering any numbers.

, enter any

Cancel to exit.

Press

Port Utility (Option Ports)

This menu provides access to the display of the current soft­ware information for each port installed in the unit. This infor­mation is required when requesting assistance from ADTRAN
customer service or when updates are needed.

ENET Address (TSU 120e only)

Displays the Ethernet address for the 10BaseT port.

Serial Number

Displays the serial number of the unit.

CMD Mode

Reserved for factory use.

61202129L1-1 TSU 120 User Manual

6-5

Chapter 6. Utility Menu

6-6

TSU 120 User Manual 61202129L1-1

Chapter 7

Test Menu

The

EST MENU

T

plays test results in the LCD window. The
four items (see Figure 7-1 on page 7-2).

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

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

Cancel returns the system to the previous menu level.

Pressing

AIN MENU

M

initiates different types of unit tests and dis-

EST MENU

T

Cancel

repeatedly returns the system to the

.

contains

61202129L1-1 TSU 120 User Manual

7-1

Chapter 7. Test Menu

LINE ON

1) LOCAL LOOPB CK PAYLOAD ON
NO LOOPBACK ATT INBAND LLB

1) NETWORK TESTS ANSI FDL LLB

2) REMOTE LOOPBK ANSI FDL PLB

ALL ZEROS

5) TEST 3) TEST PATTERN QRSS ALL DS0S
QRSS TST DS0S
ALL ONES
NONE

4) PATTERN RESULT (Displays results)

FT1 LPBK
NO LOOPBACK

2) RUN SELFTEST (Displays results) 1) DTE LOOPBACK

2) 511 P ATTRN

3) PORT TEST Nx56/64 ( 0.1) 3) 511 RESULTS (displays results)

4) DBU LOOPBACK TESTS OFF

4) CANCEL TESTS 5) DBU TEST INTERFACE TST
FORCE BACKUP

6) DBU DATA /CNTRL (displays results)

7) DBU TST RESULT (displays results)

This section app lies to the TSU 120e only

0.2 DSX-1 1) LOOPBACK
(OPTION PORTS)

Figure 7-1. Complete Test Menu Tree

7-2

TSU 120 User Manual 61202129L1-1

Network Tests

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

Network tests are run on the Network Interface (NI). You can
select three different test configurations to determine the type
of loopback and the pattern to run. Test results display in the
LCD window.

Chapter 7. Test Menu

Executing
unless only

ETWORK TESTS

N

TST DS0S are selected for testing.

Loopback Tests

A number of different loopbacks can be invoked locally from
the front panel, by T-Watch commands, or remotely by using
special in-band codes (AT&T D4 network loop-up and loop­down codes). Additionally, the loopbacks can be remotely con­trolled by means of out-of-band commands by the
or from T-WATCH Pro by a modem connection.

Network Interface Loopbacks

Network interface loopbacks (see Figure 7-2 on page 7-4) affect
the entire T1 data stream. There are two types of network loop­backs,

LINE LOOPBACK

and

Line Loopback

Line loopback 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.

will disrupt normal data flow

T1 ESF FDL

PAYLOAD LOOPBACK

.

Payload Loopback

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

61202129L1-1 TSU 120 User Manual

7-3

Chapter 7. Test Menu

NI CSU

DS1

LOCAL LOOPBCK

There are three available choices for setting the local loopback:

TSU 120

Secondary

Interface

Payload Loopback

Line Loopback

Figure 7-2. Network Loopback Tests

LINE ON
PAYLOAD ON
NO LOOPBACK

Activates the line loopback
Activates the payload loopback
Deactivates the loopback

Using the arrow keys, select a setting and record it by pressing

Enter. The unit returns the display of

2)

REMOTE LOOPBCK

1)

LOCAL LOOPBCK

and

REMOTE LOOPBK

This activates the same loopbacks as Local Loopback but at the
far end. It uses either the inband loop-up code as specified by
ANSI T1.403 for line loopback (ATT In-Band LLB), or the FDL
as specified in ANSI T1.403 for payload and line loopback
codes. The following options are available:

ATT IN-BAND LLB

Activates the line loopback using
inband code

ANSI FDL PLB

Initiates the transmission of an FDL
payload loopup code toward the far
end

ANSI FDL LLB

Initiates the transmission of an FDL
line loopup code toward the far end

7-4

TSU 120 User Manual 61202129L1-1

Chapter 7. Test Menu

FT

NO LOOPBACK

Remote Loopback can only be used with Fractional T1 if the

F T1 LLB

After a Remote Loopback option is selected, the TSU 120 veri­fies that the far end is actually in a loopback by checking for the
receipt of a code looped back from the far end. Once the
Remote Loopback type is selected, the LCD displays the loop­back progress by displaying

Test Patterns

All Zeros

Sends an all zeros pattern to the network.

All Ones

Sends an all ones pattern to the network.

1

LPBK

is selected.

Initiates the transmission of a FT1
loopback using the inband code
described in T1.403.

Deactivates the loopback

L

until loopback is verified.

OOPING

ANSI

QRSS Pattern

The QRSS pattern is commonly used to simulate real data in T1
interfaces. This pattern can be assigned to appear in all DS0s or
only in TST DS0s. When QRSS is set in all DS0s and one of the
network loopbacks previously described is activated at the far
end, a total end-to-end integrity check can be run without the
need for any external test equipment. When QRSS is assigned
to TST DS0s, an integrity check of the link can be run along
with normal data flow. The TST DS0s are user-assigned as part
of the DS0 Map. This sets the pattern for the test and initiates
the transmission of the pattern. The test is terminated by select­ing

61202129L1-1 TSU 120 User Manual

. The following patterns are available:

N

ONE

7-5

Chapter 7. Test Menu

QRSS ALL DS0S

QRSS TST DS0S

NONE

QRSS always runs at 64K/DS0.

Example

1. Select

2. Press

QRSS ALL DS0S

Enter to record the selection. The TSU 120 starts to gen-

erate a QRSS test pattern and inserts the pattern into all
DS0s.

3. To end the test, select

PATTERN RESULT

Displays the results of the test currently active. Leaving and
returning to this menu item does not interrupt the test.

Generates a QRSS test pattern and
inserts the pattern into all DS0s

Inserts a QRSS pattern in those DS0s
mapped as TST in the currently active
map (A or B)

Terminates pattern generation

by using the Arrow Keys.

.

N

ONE

7-6

Pressing

injects errors into the test pattern. These errors are

2

detected by the device performing the pattern check.

ES
BES

The number of seconds with at least 1 bit error.
The number of seconds with more than 1 bit error

and less than 320.

SES

The number of seconds with more than 320 bit
errors.

SYNC

Indicates if pattern sync is (yes) or is not (no) valid.
An asterisk (*) indicates if pattern sync has been lost
since the start of testing.

TSU 120 User Manual 61202129L1-1

Run Self-test

Chapter 7. Test Menu

Press Shift+9 to clear results. The results are accumulated until
the test pattern is set to

N

ONE

or

C

LEARED

.

Using TST DS0s for testing can be very useful, particularly in
Fractional T1 applications. You can run an end-to-end test on
the Fractional DS0s by:

1. Setting for Map B the TST in the same DS0 as used by Map
A to receive data from an Nx/DBU port, and

2. Looping the far end using a V.54 loopback code on the Nx/
DBU port (DBU is TSU 120e only).

In addition, a single DS0 can be used for continuous testing
while other DS0s are passing normal data. This will also pro­vide an end-to-end check on the entire link. Set each end to
send QRSS in TST DS0s (using 1 DS0) and occasionally view
the results on the

PATTERN RESULT

menu selection.

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 be run with the network and DTE
interfaces in place and will not disturb any external interface.

The memory portion of the self-test automatically executes
upon power-up. A full self-test can be commanded from a front
panel menu or from T-WATCH Pro.

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.

This menu selection is used to execute a full internal self-test.
The results of the self-tests are displayed in the LCD. Upon
invoking the command, the LCD displays
and the test LEDs are illuminated. Test failures are displayed in
the LCD window.

61202129L1-1 TSU 120 User Manual

S

YSTEM SELF-TEST

7-7

Chapter 7. Test Menu

The self-test consists of the following tests:

OARD LEVEL TESTS

B

Each of the TSU 120 boards contain an
on-board processor which executes a
series of tests checking the circuitry
on the board.

• RAM tests; EPROM checksum

• DS0 map tests

• On-board data path; sending a
known test pattern through an on­board loop

NIT LEVEL TESTS

U

• Front panel LED verification

• Phase Lock Loop verify

• Board-to-board interface test

A test pattern is sent from the controller through a loopback on
all other boards and is checked on the controller. This verifies
the data path, clocks, and control signals.

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

Executing the self-test will disrupt normal data flow and prevent
remote communication until it is complete.

Port Tests

7-8

The Port Tests menu is used to activate testing of specific data
ports. It controls the activation of loopbacks and the initiation
of data test patterns. Test results are displayed in the LCD win­dow.

Port tests execution will disrupt normal data flow in the port be­ing tested.

TSU 120 User Manual 61202129L1-1

Port Test Menu Items for 0.1 Nx56/64

0.1 Nx56/64 is the base Nx interface. It offers the following test
functions:

DTE LOOPBK

This initiates a loopback. The following options are available:

Chapter 7. Test Menu

PRT/LCL

The Nx port activates both a Local
loopback (back toward the DTE) and a Port
loopback when either is invoked.

REMOTE

The remote loopback causes a V.54 code to
be sent to the far end. The Nx at the far end
activates a PORT/LCL loopback upon
detection of the V.54 code.

OFF

The loop is deactivated.

The TSU 120 checks the remote loopback activation by detecting
a proper response from the remote end. While waiting for the re­sponse, the display shows Looping. If successful, the display
changes to

L

OOPED-UP

. If unsuccessful, the display shows

F

AILED

511 PATTERN

This activates the generation of the 511 test pattern. The follow­ing options are available:

ON

The pattern check circuitry is enabled and a
test started. The test is ended by selecting

.

OFF

OFF

The pattern generation and check is
disabled.

.

511 RESULTS

This displays the results of the 511 test indicated in the 511
option. The results are in the form of the number of errored sec­onds. The error count can be cleared by pressing

61202129L1-1 TSU 120 User Manual

Clear (Shift+9).

7-9

Chapter 7. Test Menu

DBU Loopback (TSU 120e only)

ON

OFF

DBU Test (TSU 120e only)

This selection is used to force a backup to occur even if a
backup condition does not exist.

DBU DATA/CNTRL (TSU 120e only)

Allows status of DCD and RI to be monitored while the

INTERFACE TST

ured and dialed up, there should be an asterisk (*) over DCD.

Initiates a loopback from the DBU towards the
external DCE

Terminates the loopback test

Test Name What it does...

TEST OFF
FORCED

BACKUP
INTERFACE

TEST

Turns off DBU tests
Forces a backup regardless of time-of-day

lockouts or network conditions
Causes the external DCE to dial its stored

number. After the connection is established,
the DBU sends a test pattern to verify the
backup network. This test does not disrupt
data or the primary network.

is on. If the dial-up network is correctly config-

Port Test Menu Items for 0.2 DSX-1

Cancel Tests

7-10

DBU TST RESULT (TSU 120e only)

When an interface test is active, this screen will show the total
number of

DATA BLOCKS

received and the number of blocks

with errors.

Loopback

Loopback activates the loopback function on the base DSX-1
interface. The available loopbacks are Port Loopback (towards
the NI) and Line Loopback (towards the PBX or other terminal
equipment).

Use this menu selection to deactivate all active tests, including
tests on option modules.

TSU 120 User Manual 61202129L1-1

Chapter 8

MAIN MENU

Telnet/Terminal Menus

The

TELNET/T

ERMINAL MAIN MENU

is the first menu displayed
after the TELNET/Terminal session is established.
See Figure 8-1. The default TELNET/Terminal password is
ADTRAN.

Only one TELNET/Terminal session may be active at a time.

ADTRAN - TSU 120
Password: XXXXXXXX
Main Menu

1) Status

2) Config

3) Util

4) Test

5) Remote Menu Access

6) Management Config

7) Flash Download

8) Quit Session

Figure 8-1. Telnet/Terminal Main Menu

61202129L1-1 TSU 120 User Manual

8-1

Chapter 8. Telnet/Terminal Menus

Status, Config, Util, and Test Menu Options

These menu items can access the same modified menus that
you can access through the front panel. For detailed informa­tion on the available menu options, refer to the following sec­tions:

• Status Menu on page 4-1

• Configuration Menu on page 5-1

• Utility Menu on page 6-1

• Test Menu on page 7-1

DS0 Maps Configuration Menu

The Telnet/Terminal version of the DS0 maps configuration
menu takes advantage of the 24-line VT 100 display. Upon
entering this menu, the current Temp (temporary) map dis­plays and is followed by nine selections that you can use for
configuring and reviewing map information. See Figure 8-2

TEMP MAP

DS0# PORT DS0# PORT

1

IDLE

2

IDLE

3

IDLE

4

IDLE

5

IDLE

6

IDLE

7

IDLE

8

IDLE

9

IDLE

10
11

IDLE

12

IDLE

13
14
15
16
17
18
19
20
21
22
23
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8-2

1) COPY MAP A TO TEMP MAP

2) COPY MAP B TO TEMP MAP

3) CREATE TEMP MAP

4) REVIEWMAP A

5) REVIEW MAP B

6) REVIEW TEMP MAP

7) EDIT TEMP MAP

8) APPLY TEMP MAP TO MAP A

9) APPLY TEMP MAP TO MAP B

Figure 8-2. DS0 Temp Map

TSU 120 User Manual 61202129L1-1