Adtran DSU IV ESP User Manual

DSU IV ESP

Data Service Unit with Embedded SNMP

USER MANUAL

Part Number Version
1204011L1 DSU IV ESP

1204001L1 ESP 4-wire Switched 56 DBU Card
1204002L1 ESP V.34 DBU Card
1204004L1 ESP ISDN DBU Card
1204005L1 ESP Ethernet Card

61204.011L1-1A
May 1997

Trademark Information:

Hayes is a registered trademark of Hayes Microcomputer Products, Inc.
Openview is a registered trademark of Hewlett-Packard Company.
SunNet Manager is a registered trademark of Sun Microsystems, Inc.
Netview is a registered trademark of IBM.

901 Explorer Boulevard

P.O. Box 140000

Huntsville, AL 35814-4000

Phone: [phone]

© 1997 ADTRAN, Inc.

All rights reserved.

Printed in USA.

ABOUT THIS MANUAL

This manual is arranged so you can quickly and easily find the information you
need. The following is an overview of the contents of this manual:

• Chapter 1, Introduction, familiarizes you with DDS, Switched 56, SNMP, and
TELNET. This chapter also includes DSU IV highlights and describes the options
that may be purchased for use with the DSU.

• Chapter 2, Installation, describes the DSU connectors (pin assignments are given in
Appendix A) and provides an installation diagram.

• Chapter 3, Operation, explains how to operate your DSU using either the front
panel or a VT 100 terminal interface.

• Chapter 4, Applications, provides examples of some common DSU applications,
including network diagrams.

• Chapter 5, Configuration Overview, explains how to access the DSU configuration
menu, including information on the different configuration methods. This chapter
also provides a front panel menu tree.

• Chapters 6 through 11 provide brief explanations for selections made in the Con­figuration menus. These chapters are based on the front panel menu branches of
the Configuration menu: Network Options, DTE Options, Test Options, Dial
Options, Management, and Utilities.

• Chapter 12, Testing and Troubleshooting, describes the testing options available
with the DSU IV and gives troubleshooting information.

• Chapter 13, Activating Dial Functions, describes the Dial options available from the
Main menu.

• Chapter 14, Viewing Status Information, provides information on the status menus
available for the base unit as well as the DBU cards.

• Appendix A provides pinouts for the connectors of the DSU and the DBU and
Ethernet cards.

• Appendix B shows the AT commands available for the DSU.

• Appendix C describes the terminal menu interface (accessed through a VT 100
terminal or a TELNET session).

• Appendix D provides information on the unit's configuration profiles.

• Appendix E contains a DSU to modem interconnect diagram for a modem tail
circuit application.

• Appendix F contains product specifications.

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.

FCC regulations require that the following information be provided in this manual:

1. This equipment complies with Part 68 of the FCC rules. On the bottom of the equipment
housing is a label that shows the FCC registration number and ringer equivalence number
(REN) for this equipment. If requested, provide this information to the telephone company.

2. If this equipment causes harm to the telephone network, the telephone company may temporarily
discontinue service. If possible, advance notification is given; otherwise, notification is given
as soon as possible. The telephone company will advise the customer of the right to file a
complaint with the FCC.

3. The telephone company may make changes in its facilities, equipment, operations, or
procedures that could affect the proper operation of this equipment; advance notification and
the opportunity to maintain uninterrupted service are given.

4. If experiencing difficulty with this equipment, please contact ADTRAN for repair and
warranty information. The telephone company may require this equipment to be
disconnected from the network until the problem is corrected, or it is certain the equipment is
not malfunctioning.

5. This unit contains no user-serviceable parts.

6. An FCC compliant telephone cord with a modular plug is provided with this equipment. In
addition, an FCC compliant cable appropriate for the dial backup option ordered is provided
with this equipment. This equipment is designed to be connected to the telephone network or
premises wiring using an FCC compatible modular jack, which is Part 68 compliant.

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

Service Digital Facility Service Order Network

Type Interface Code Code Jacks

2.4 kbps Digital Interface 04DU5-24 6.0F RJ-48S

4.8 kbps Digital Interface 04DU5-48 6.0F RJ-48S

9.6 kbps Digital Interface 04DU5-96 6.0F RJ-48S

19.2 kbps Digital Interface 04DU5-19 6.0F RJ-48S

38.4 kbps Digital Interface 04DU5-38 6.0F RJ-48S
56 kbps Digital Interface 04DU5-56 6.0F RJ-48S
64 kbps Digital Interface 04DU5-64 6.0F RJ-48S

8. The following information may be required when applying to the local telephone company for
a dial-up line for the V.34:

Service REN FIC USOC

Type

Loop Start (V.34) 0.8B/0.4A 02LS2 RJ-11C

9. The REN is useful in determining the quantity of devices you may connect to your telephone
line and still have all of those devices ring when your number is called. In most areas, the sum
of the RENs of all devices should not exceed five. To be certain of the number of devices you
may connect to your line as determined by the REN, call your telephone company to
determine the maximum REN for your calling area.

10.This equipment may not be used on coin service provided by the telephone company.
Connection to party lines is subject to state tariffs. (Contact your state public utility
commission or corporation commission for information.)

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.

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

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.

CANADIAN EQUIPMENT LIMITATIONS

Notice: The Canadian Industry and Science Canada 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 water pipe
system, if present, are connected together. This precaution may be particularly
important in rural areas.

Caution: 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 requirement that the total of the Load Num­bers of all devices does not exceed 100.

ISDN Service Ordering Information for the ADTRAN DSU IV ESP With ISDN Dial
Backup

For ADTRAN DSU IV ESP ISDN applications, the following guide can be used as
an aid in ordering basic ISDN service from your local telephone company. The
ADTRAN DSU IV ESP ISDN includes NT1 and Terminal adapter functionality and
supports data rates up to 64 kbps.

Request an ISDN Basic Rate Interface (BRI) line with the following features:

U-interface reference point
2B1Q line coding
1B+D Service (supports up to 64 kbps)

The DSU IV ESP ISDN supports the following switch types and software
protocols:

AT&T 5ESS Custom, 5E6 and later software, National ISDN-1
NT1 DMS-100 BCS-32 and later software (Pvc1), National ISDN-1 (Pvc2)
Siemens EWSD National ISDN-1

Request that the ISDN line allocate one DYNAMIC Terminal Endpoint Identifier
(TEI) for the number.

For service offered from an AT&T 5ESS, request a point-to-point line with the
following features:

Feature: Value
B1 Service: On Demand (DMD)
Data Line Class: Point-to-Point
Maximum B Channels: 1 (1B+D)
Circuit Switched Data (CSD) Bearer Channels: Any
Number of CSD Calls: 1 (1B+D)
Terminal Type: Type A

Turn the Following Features Off:

Packet Mode Data
Multi-line Hunt
Multiple Call Appearances
Electronic Key Telephone Sets (EKTS)
Shared Dictionary Numbers
Accept Special Type of Number
Intercom Groups
Network Resource Selector (Modem Pools)
Message Waiting
Hunting
InterLata Competition

For service offered from a Northern Telecom DMS-100, request a Point-to-Point
Multi-Point line with the following features:

Line Type: Basic Rate, Functional
Electronic Key Telephone Sets (EKTS): No
Call Appearance Handling (CACH): No
Non-Initializing Terminal: No
Circuit Switched Service: Yes
Packet Switched Service: No
TEI: Dynamic
Bearer Service: Circuit Switched voice and data permitted on any B channel (packet mode

data not permitted)

Table of Contents

Table of Contents

Table of Contents

Chapter 1. Introduction

Product Overview .................................................................................................................. 1

DDS Operation ........................................................................................................................ 3

Switched 56 Operation ...........................................................................................................4

SNMP ....................................................................................................................................... 4

Network Manager ............................................................................................. 4

Agent................................................................................................................... 4

MIB ...................................................................................................................... 4

TELNET.................................................................................................................................... 5

Dial Backup Operation .......................................................................................................... 5

ESP Dial Backup Options ............................................................................................... 5

4-Wire Switched 56 Card ........................................................................................ 5

V.34 Card ................................................................................................................... 6

ISDN Card ................................................................................................................. 6

Warranty and Customer Service .......................................................................................... 6

Chapter 2. Installation

Unpack, Inspect, Power Up................................................................................................... 7

Receipt Inspection ........................................................................................................... 7

ADTRAN Shipments Include ................................................................................. 7

Customer Provides................................................................................................... 8

Power Up .......................................................................................................................... 8

Rear Panel ................................................................................................................................ 9

DBU and Ethernet Card Slots ...................................................................................... 10

Telco Connector ............................................................................................................. 10

Network Interface Connection .................................................................................... 10

EIA-232 and V.35 Connectors ...................................................................................... 10

DTE Data Connection/Primary DTE ......................................................................... 10

Control Port ....................................................................................................................11

Chapter 3. Operation

Front Panel............................................................................................................................. 13

LCD Window................................................................................................... 13

Enter .................................................................................................................. 13

Keypad.............................................................................................................. 13

Shift ................................................................................................................... 13

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Table of Contents

Cancel ............................................................................................................... 14

Up and Down Arrows .................................................................................... 14

LED Descriptions ............................................................................................ 14

Front Panel Menu Navigation ..................................................................................... 17

Front Panel Menu Structure......................................................................................... 18

Main Menu .............................................................................................................. 18

Status................................................................................................................. 18

Test .................................................................................................................... 18

Configuration .................................................................................................. 19

Dial .................................................................................................................... 19

VT 100 Terminal Connection and Operation .................................................................... 20

Chapter 4. Applications

LAN Application with SNMP/TELNET Management .................................................. 23

Minimum Configuration Requirements for SNMP/TELNET Access................... 24

Interface ............................................................................................................ 24

IP Address ........................................................................................................ 24

Subnet Mask..................................................................................................... 24

Gateway IP Address (if required) ................................................................. 24

Special Features of this Application ........................................................................... 24

Dial Backup Application...................................................................................................... 26

Entering Dial Backup Mode......................................................................................... 26

Operation During Critical Times ......................................................................... 26

Loss of Sealing Current .................................................................................. 26

Out of Service (OOS) Signal .......................................................................... 26

No Receive Signal ........................................................................................... 27

All 1s or all 0s Condition................................................................................ 27

Answer Always ............................................................................................... 27

Operation During Noncritical Times .................................................................. 27

Weekend and Time of Day Lockout ............................................................. 27

Conditions for Returning to the DDS Circuit............................................................ 27

Chapter 5. Configuration Overview

Configuration Methods ....................................................................................................... 29

AT Commands ............................................................................................................... 33

V.25 bis Commands ...................................................................................................... 34

SDLC Option ........................................................................................................... 34

Character Format ............................................................................................ 34

Command Structure ....................................................................................... 34

Bi-Sync Option ........................................................................................................ 34

ii DSU IV ESP User Manual 61204.011L1-1

Table of Contents

Character Format ............................................................................................ 34

Command Structure ....................................................................................... 34

Asynchronous Option ........................................................................................... 35

Character Format ............................................................................................ 35

Command Structure ....................................................................................... 35

Command Descriptions......................................................................................... 35

Syntax and Possible Responses ............................................................................ 36

CNL (Configuration Local) ............................................................................ 36

CNR (Configuration Remote) ....................................................................... 36

Chapter 6. Configuring Network Options

Network Options .................................................................................................................. 37

Loop Rate ........................................................................................................................ 39

Network Address .......................................................................................................... 40

Remote Configuration .................................................................................................. 40

Network Type ................................................................................................................ 40

Clock Source ................................................................................................................... 40

Chapter 7. Configuring DTE Option

DTE Options .......................................................................................................................... 41

DTE Rate ......................................................................................................................... 45

Connector Type ............................................................................................................. 46

Data Format.................................................................................................................... 46

DTE Command Option................................................................................................. 46

Transmit Clock............................................................................................................... 46

Clear to Send (CS) Options .......................................................................................... 47

Anti-Stream .................................................................................................................... 47

CD Options ..................................................................................................................... 48

Data Terminal Ready (TR) Options ............................................................................ 48

Data Set Ready (SR) Options ....................................................................................... 48

Chapter 8. Configuring Test Options

Test Options ........................................................................................................................... 49

Test Timeout................................................................................................................... 50

Remote Digital Loopback (RDL) ................................................................................. 50

EIA LLB........................................................................................................................... 51

EIA RLB .......................................................................................................................... 51

DBU Answer Test .......................................................................................................... 51

61204.011L1-1 DSU IV ESP User Manual iii

Table of Contents

Chapter 9. Configuring Dial Options

Dial Options .......................................................................................................................... 53

Phone Numbers .................................................................................................................... 55

ISDN Dial Backup ......................................................................................................... 55

Setting the Service Profile Identifier (SPID) ................................................ 55

Setting the Local Directory (LOC) Number ................................................ 55

SW56 Auto Answer .............................................................................................................. 56

DBU Options ......................................................................................................................... 56

Standard DBU Options ................................................................................................. 56

Automatic DBU ...................................................................................................... 56

Number to Dial ....................................................................................................... 56

Originate/Answer ................................................................................................. 56

DBU Criteria ........................................................................................................... 57

When Out of Service (OOS) ........................................................................... 57

No Receive (RX) Signal .................................................................................. 57

No Sealing Current ......................................................................................... 57

When all 1s/0s ................................................................................................. 57

Answer Always ............................................................................................... 57

Weekend Lockout ............................................................................................ 57

Daily Lockout .................................................................................................. 57

Lockout Start.................................................................................................... 58

Lockout End ..................................................................................................... 58

Auto Restore ........................................................................................................... 58

Redial Counter ........................................................................................................ 58

Fail Timer ................................................................................................................ 59

Wait to Redial ......................................................................................................... 59

DBU Options for S4W Card ......................................................................................... 62

Network Type .................................................................................................. 62

DBU Options for V.34 Card ......................................................................................... 62

Error Control.................................................................................................... 62

Flow Control .................................................................................................... 62

Compression .................................................................................................... 62

DBU Options for ISDN Card ....................................................................................... 64

Switch Type ...................................................................................................... 64

DBU Passcode ....................................................................................................................... 64

Chapter 10. Configuring Management Functions

Interface .......................................................................................................................... 66

Control Rate ................................................................................................................... 66

IP Options ....................................................................................................................... 66

Unit IP Address ............................................................................................... 66

iv DSU IV ESP User Manual 61204.011L1-1

Table of Contents

Subnet Mask.....................................................................................................66

Gateway IP Address.......................................................................................66

IP Security........................................................................................................66

IP Filter Address..............................................................................................66

SNMP Options...............................................................................................................67

Get Community...............................................................................................67

Set Community................................................................................................67

Trap Community.............................................................................................67

SNMP Traps.....................................................................................................67

Trap IP Address...............................................................................................67

System Name, Contact, and Location..........................................................68

Authentication Traps......................................................................................68

TELNET Options...........................................................................................................68

TELNET Password..........................................................................................68

TELNET Timeout............................................................................................68

Entering Letters Using the Front Panel.............................................................................69

Chapter 11. Configuring Unit Utilities

Manual Command........................................................................................................72

Time/Date......................................................................................................................74

Software Revision..........................................................................................................74

LAN MAC Address......................................................................................................74

Serial Number................................................................................................................74

Chapter 12. Testing and Troubleshooting

Test Overview........................................................................................................................75

Initiating a Test..............................................................................................................76

Test Status Display........................................................................................................77

Exiting a Test..................................................................................................................77

Troubleshooting....................................................................................................................79

Messages from the DSU/CSU.....................................................................................79

Troubleshooting New Installs.....................................................................................80

Test Sequence for Troubleshooting New Installs or Existing Circuits...........81

Local Unit Diagnostics.........................................................................................................82

DTE & Loop (LL)...........................................................................................................84

Loop Only (RT)..............................................................................................................85

DTE Only........................................................................................................................86

DTE With Test Pattern..................................................................................................87

Test Pattern.....................................................................................................................89

Self Test...........................................................................................................................90

61204.011L1-1 DSU IV ESP User Manual v

Table of Contents

Remote Unit Diagnostics ..................................................................................................... 91

DBU Connection ................................................................................................................... 93

Chapter 13. Activating Dial Functions

Dial Options .......................................................................................................................... 95

Answer Unit Connected to DDS Line ................................................................. 96

Dial Backup ...................................................................................................... 96

Originate Unit Connected to DDS Line .............................................................. 96

Dial Backup ...................................................................................................... 96

Stay on Leased ................................................................................................. 96

DBU Online Test .............................................................................................. 97

Dial Options During Dial Backup........................................................................ 97

Hang Up ........................................................................................................... 97

Stay On Line..................................................................................................... 97

Chapter 14. Viewing Status Information

Status ...................................................................................................................................... 99

Network Rate, DTE Rate, and Data Format ....................................................... 99

Dial Backup Information ..................................................................................... 100

Type of Dial Backup Service ........................................................................ 100

Current Status of Dial Backup Mode ......................................................... 100

DSU Operation and Network Status ................................................................. 102

Current DSU IV ESP Status ......................................................................... 102

Current DDS Network Status...................................................................... 102

DTE Control Leads and Status ........................................................................... 103

Appendix A. Pinouts ........................................................................................................ 105

Appendix B. AT Commands ............................................................................................111

Appendix C. Terminal Menu Structure ........................................................................ 113

Appendix D. Configuration Profiles ............................................................................ 129

Appendix E. DSU to Modem Interconnect .................................................................. 133

Appendix F. Specifications Summary ........................................................................... 135

Glossary ............................................................................................................................... 139

Index ..................................................................................................................................... 147

vi DSU IV ESP User Manual 61204.011L1-1

Table of Contents

List of Tables

Table 6-A Network Options AT Commands ................................................................. 38

Table 7-A DTE Options AT Commands......................................................................... 43

Table 7-B Short and Long Delays at Different Operating Speeds ............................. 47

Table 8-A Test Options AT Commands.......................................................................... 50

Table 9-A AT Commands for Storing Phone Numbers ............................................... 55

Table 9-B DBU Options AT Commands for All Models ............................................. 60

Table 9-C DBU Options AT Commands for V.34 Card ................................................ 63

Table 11-A Manual Commands ........................................................................................ 73

Table 12-A Messages from the DSU/CSU ....................................................................... 79

Table 12-B Troubleshooting New Installs ....................................................................... 80

Table 12-C Test AT Commands ......................................................................................... 82

Table 12-D DTE With Test Pattern Commands ............................................................... 83

Table 12-E Remote Tests and AT Commands ................................................................. 91

Table A-A Pin Assignments for Telco Connector ........................................................ 106

Table A-B Pin Assignments for ESP DBU Card Connectors ..................................... 106

Table A-C Pin Assignments for Primary EIA-232 Connector ................................... 107

Table A-D Pin Assignments for Primary V.35 Connector .......................................... 108

Table A-E Pin Assignments for Control Connector.................................................... 108

Table A-F Pin Assignments for 10baseT Connector ................................................... 109

Table B-A AT Commands ................................................................................................111

Table C-A Terminal Main Menu Dial Selection ............................................................114

Table D-A Configuration Profiles .................................................................................. 130

List of Figures

Figure 1-1 Typical Point-to-Point Application for DSU IV ESP .................................... 3

Figure 2-1 DSU IV ESP Rear View ..................................................................................... 9

Figure 3-1 DSU IV ESP Front Panel ................................................................................. 15

Figure 3-2 Example of Basic Menu Navigation ............................................................. 17

Figure 3-3 Terminal Interface Main Menu (SW56 Mode) ............................................ 21

Figure 4-1 SLIP/PPP LAN Application with SNMP/TELNET Management .......... 25

Figure 4-2 Ethernet LAN Application with SNMP/TELNET Management............. 25

Figure 4-3 Dial Backup Application ................................................................................ 28

Figure 5-1 Front Panel Configuration Menu Tree ......................................................... 31

Figure 6-1 Network Options Menu Tree......................................................................... 39

Figure 7-1 DTE Options Menu Tree ................................................................................ 42

Figure 8-1 Test Options Menu Tree ................................................................................. 49

Figure 9-1 Dial Options Configuration Menu Tree....................................................... 54

Figure 10-1 Management Menu Tree ................................................................................ 65

Figure 11-1 Utilities Menu Tree .......................................................................................... 71

61204.011L1-1 DSU IV ESP User Manual vii

Table of Contents

Figure 12-1 Normal Operation Before Initiating Loopback Test................................... 75

Figure 12-2 Initiating a Test ................................................................................................ 76

Figure 12-3 Sample Test Status Displays .......................................................................... 77

Figure 12-4 Complete Test Menu ....................................................................................... 78

Figure 12-5 DTE & Loop Test ............................................................................................. 84

Figure 12-6 Loop Only Test ................................................................................................ 85

Figure 12-7 DTE Only Test Diagram ................................................................................. 86

Figure 12-8 DTE with Test Pattern..................................................................................... 87

Figure 12-9 Test Pattern Only ............................................................................................. 89

Figure 12-10 V.54 RDL with Test Pattern ........................................................................... 91

Figure 12-11 Initiating a Remote Test................................................................................. 92

Figure 12-12 DBU Connection Test .................................................................................... 93

Figure 12-13 Initiating a DBU Connection Test ................................................................ 94

Figure 13-1 Dial Options Menu (SW56)............................................................................ 95

Figure 13-2 Dial Options Menu (Dedicated).................................................................... 96

Figure 14-1 Status Display .................................................................................................. 99

Figure C-1 Terminal Interface Main Menu..................................................................... 114

Figure C-2 Terminal Menu Tree .......................................................................................115

Figure C-3 Status Menu ....................................................................................................117

Figure C-4 Remote Configuration Options ....................................................................118

Figure C-5 Main Configuration Menu ............................................................................119

Figure C-6 DSU Configuration Menu ............................................................................ 120

Figure C-7 S4W Dial Backup ........................................................................................... 121

Figure C-8 Management Menu ....................................................................................... 122

Figure C-9 SNMP Management Menu .......................................................................... 123

Figure C-10 Utility Menu................................................................................................... 124

Figure C-11 Local Test Options Menu ............................................................................. 125

Figure C-12 Remote Test Options Menu ......................................................................... 126

Figure C-13 SW56 Dialing Menu ...................................................................................... 127

Figure C-14 Dial ESP DBU Menu ..................................................................................... 128

Figure E-1 DSU to Modem Interconnect ....................................................................... 133

viii DSU IV ESP User Manual 61204.011L1-1

PRODUCT OVERVIEW

The ADTRAN DSU IV ESP (data service unit with embedded
SNMP) provides a reliable, high speed data connection for
customer data terminal equipment (DTE) through digital data
service (DDS) lines. The DSU IV ESP has an embedded SNMP
(simple network management protocol) agent that provides
complete SNMP access to the unit through an integral SLIP or
PPP async port. The DSU IV ESP's unique modular approach
provides optional 10baseT ethernet access for SNMP. Also,
optional modular ESP DBU cards provide automatic or manual
dial backup for the dedicated circuit.

Chapter 1. Introduction

Chapter 1

Introduction

The following are features of the DSU IV:

• DDS rates supported from 2.4 to 64 kbps including 19.2 and

38.4

• 4-wire Switched 56 (SW56) operation

• Embedded SNMP and TELNET

• Control port provides SLIP and Async PPP access to SNMP or
VT 100 terminal configuration

• Two ESP option slots

• 10baseT ethernet SNMP port available with ESP ethernet Card

• Automatic or manual DBU

• DBU available with ESP DBU cards; options include 4-wire
Switched 56, V.34, and ISDN

• Time of day and weekend DBU lockout options

61204.011L1-1 DSU IV ESP User Manual 1

Chapter 1. Introduction

The DSU IV ESP provides both V.35 and EIA-232 electrical and
physical DTE interfaces to accommodate a variety of applica­tions.

To ensure a reliable connection, the unit features an extended
receiver capability which permits operation over long loops
(3.4 miles or 5.5 km of 26 AWG at 56 kbps).

The ESP 4-wire SW56 DBU card and the base unit's integrated
SW56 capabilities are compatible with AT&T Accunet and Sprint
SW56 type services. The V.34 DBU card allows switched backup
over the public switched telephone network (PSTN). The ESP
ISDN 1B+D card is compatible with National ISDN and supports
a U- interface to the Basic Rate ISDN.

Figure 1-1 shows a typical point-to-point application for the DSU
IV ESP.

2 DSU IV ESP User Manual 61204.011L1-1

Chapter 1. Introduction

Figure 1-1

Typical Point-to-Point Application for DSU IV ESP

DDS OPERATION

DDS is a nationwide service that allows interconnection and
transport of data at speeds up to 64 kbps. The local exchange
carriers provide the local loop service to DDS customers and
may provide data for routing Inter-LATA to an interexchange
carrier. In DDS mode, the DSU IV ESP supports 2.4 to 64 kbps
DDS service rates yielding DTE rates of 2.4, 4.8, 9.6, 19.2, 38.4
(sync or async), 56 kbps, and 64 kbps. An additional rate of 57.6
is available in asynchronous mode. The unit can be configured
to run slower DTE rates (async or sync) over the 56 or 64 kbps
service.

61204.011L1-1 DSU IV ESP User Manual 3

Chapter 1. Introduction

SWITCHED 56 OPERATION

This dial-up, 4-wire Switched 56 DDS allows customers to pay
for data connection only for the time the unit is active. The
regional operating companies provide the 4-wire local loop
service to SW56 customers. The DSU IV ESP supports DTE rates
of 2.4, 4.8, 9.6, 19.2, 38.4, and 56 kbps (synchronous) and 2.4, 4.8,

9.6, 19.2, 38.4, and 57.6 kbps (asynchronous).

SNMP

The term SNMP broadly refers to the message protocols used to
exchange information between the network and the managed
devices, as well as to the structure of network management data
bases. SNMP has three basic components:

Network Manager

Control program that collects, controls, and presents data
pertinent to the operation of the network devices. It resides on a
network management station.

Agent

Control program that resides in each network device connected.
This program responds to queries and commands from the
network manager and returns requested information or invokes
configuration changes initiated by the manager.

MIB

Index to the organized data within a network device. It defines
the operation parameters that can be controlled or monitored.

The DSU IV supports the MIB-II standard, RFC 1213, and
ADTRAN Enterprise Specific MIB. MIB files are available from
ADTRAN in the support section of the ADTRAN Web page at
www.adtran.com.

The DSU IV's embedded SNMP feature allows the unit to be
accessed and controlled by a network manager through either a
device running SLIP or async PPP protocol (connected to the
CONTROL port of the DSU) or through a LAN. LAN connection

4 DSU IV ESP User Manual 61204.011L1-1

requires the optional ESP ethernet card (part number
1204005L1). This card provides a 10baseT ethernet interface to
the LAN.

TELNET

TELNET provides a password-protected, remote login facility to
the DSU IV. TELNET allows a user on a network manager to
control the DSU IV through the terminal menus. See the chapter
Applications and the appendix Terminal Menu Structure for more
information.

DIAL BACKUP OPERATION

The DSU IV ESP's unique DBU cards are field-installable by the
customer. See the chapter Installation for information on install­ing DBU cards. All DBU cards are compatible with other
ADTRAN ESP products supporting DBU (see the following
note). The three backup options are described in the following
sections. Contact the local telco provider to determine which
services are available in your area. See the chapter Applications
for more information, including an example of a dial backup
application.

Chapter 1. Introduction

The ESP V.34 DBU is not compatible with the TSU ESP.

ESP Dial Backup Options

4-Wire Switched 56 Card

This dial-up 4-wire SW56 card allows customers to pay for data
connection only for the time the unit is active. The regional
operating companies provide the 4-wire local loop service to
SW56 customers. This card supports DTE rates of 2.4, 4.8, 9.6,

19.2, 38.4 (asynchronous or synchronous), and 56 kbps (synchro-

nous). An additional DTE rate of 57.6 kbps is available in async
modes.

61204.011L1-1 DSU IV ESP User Manual 5

Chapter 1. Introduction

V.34 Card

The V.34 card has all of a V.32 bis modem's modes of operation,
plus V.34 and V.FC modes. This allows the V.34 option to run
synchronous rates up to 33.6 kbps as opposed to the V.32 at 14.4
kbps. In asynchronous mode the throughput at 57.6 kbps is less
dependent on data types.

ISDN Card

1B+D Basic Rate ISDN service provides the customer with a
switched 56/64 kbps circuit. In addition to 56 and 64 kbps
synchronous DTE rates, the card also supports synchronous and
asynchronous DTE rates of 2.4, 4.8, 9.6, 19.2, and 38.4 kbps per
CCITT V.120. The card also supports the DTE rate of 57.6 kbps
async and is compatible with the 4-wire SW56 DBU card.

WARRANTY AND CUSTOMER SERVICE

ADTRAN will replace or repair this product within five years
from the date of shipment if it does not meet its published
specifications or fails while in service. For detailed warranty,
repair and return information refer to 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 further information, contact one of
the numbers listed on the inside back cover of this manual.

6 DSU IV ESP User Manual 61204.011L1-1

UNPACK, INSPECT, POWER UP
Receipt Inspection

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

Chapter 2. Installation

Chapter 2

Installation

ADTRAN Shipments Include

The following items are included in ADTRAN shipments of the
DSU IV ESP:

• DSU IV ESP unit

• The user manual

• An 8-position modular to 8-position modular cable

• An 8-position modular to 8-position modular cable and a
modular to female DB-25 adapter for access to the Control/
SLIP/PPP port

61204.011L1-1 DSU IV ESP User Manual 7

Chapter 2. Installation

Customer Provides

The ADTRAN DSU IV ESP MIB is available from ADTRAN in the
support section of the ADTRAN Web page at www.adtran.com.

The following items are included in ADTRAN shipments of ESP
DBU cards:

• ESP DBU card

• An 8-position modular to 8-position modular cable for the
4-wire SW56 and 1B+D ISDN dial backup options. An
8-position modular to 4-position modular cable for the V.34
backup option.

The customer must provide either a male EIA-232 (standard 25­pin, D-type) or a male V.35 interface cable.

For SNMP management, the customer must provide access to
the DSU IV ESP either through a SLIP port, Async PPP port
(requires a male 25-pin D-type connector), or a 10baseT ethernet
port (requires that an ADTRAN ESP Ethernet card be installed in
the DSU IV ESP). See the appendix Pinouts for the pin assign­ments of the control port (for SLIP and Async PPP) and the
ethernet port.

Power Up

The DSU IV ESP is provided with a captive 8-foot power cord,
terminated by a three-prong plug which connects to a grounded
115 VAC power receptacle.

Power to the DSU must be provided from a grounded 115 VAC, 60 Hz
receptacle.

8 DSU IV ESP User Manual 61204.011L1-1

REAR PANEL

Chapter 2. Installation

The rear panel contains two DTE connectors which provide
primary channel V.35 or EIA-232. An 8-pin telco jack, a control
port, a captive power cord, and a power switch are also located
on the rear panel. Pin assignments for these connectors are listed
in the appendix Pinouts. The DSU IV ESP rear panel is shown in
Figure 2-1 with optional ESP cards installed.

DDS

4-wire

S4W, V.34, or
ISDN DBU Card

DBU INTERFACE LAN INTERFACE

ISDN
DBU

TELCO

EIA-232

10BASET LAN Card

CONTROL

V .35

10 BASE T

LAN

115 VAC

60HZ.15A

ON

OFF

Telco Cable

RJ45-to-DB25

EIA232 Cable

Cable

V.35 Cable

VT 100 Terminal or
device running SLIP

DTE Device DTE Device

or async PPP protocol

Item Function

DBU Interface ESP DBU card slot
LAN Interface ESP Ethernet card slot
Telco Connects to dedicated circuit
EIA-232 Connects to a DTE interface
Control Connects to a VT 100 terminal or a

device running SLIP or async PPP

protocol
V.35 High speed DTE interface
Power Switch Turns power on or off
115 VAC Connection Power cord connection

DSU IV ESP Rear View

Figure 2-1

61204.011L1-1 DSU IV ESP User Manual 9

Chapter 2. Installation

DBU and Ethernet Card Slots

The DSU IV ESP rear panel has two card slots for the installation
of dial backup and ethernet cards. To insert cards, perform the
following procedure:

1. Remove power from the DSU IV ESP.

2. Slide the card into the corresponding rear slot until the card
panel is flush with the DSU IV chassis.

3. Push card locks in (until they click) to secure the card and
ensure proper installation.

Card slots are keyed to prevent improper installation (i.e., putting a
DBU card into the ethernet slot).

Remove power from the unit prior to installing or removing ESP
option cards.

Telco Connector: Network Interface Connection

The DSU IV ESP has an 8-position modular jack labeled TELCO.
The telco connector is used for connecting to the DDS network.
The pinout for this connector is listed in the appendix Pinouts.

Each ESP DBU card has a connector which is used for connection
to the switched backup network. The pinout for the connector
depends on the card type. Pinouts for 4-wire Switched 56, V.34,
and ISDN 1B+D DBU options are shown in the appendix
Pinouts.

EIA-232 and V.35 Connectors: DTE Data Connection/Primary DTE

The primary DTE should be connected to either the EIA-232 DTE
connector or the V.35 DTE connector. The maximum cable
lengths recommended are 50 feet for the EIA-232, and 100 feet
for the V.35. The pin assignments for the connectors are listed in
the appendix Pinouts.

10 DSU IV ESP User Manual 61204.011L1-1

Control Port

Chapter 2. Installation

The V.35 connector is recommended for use with data rates
above 19.2 kbps. The EIA-232 connector works up to 56 kbps
with a low capacitance cable or with the external transmit clock
option selected. The primary DTE rate is configured from the
front panel. The primary DTE equipment can operate in asyn­chronous or synchronous modes.

To prevent possible radio frequency interference emissions, a shielded
cable is required.

The DSU IV has an 8-position modular jack labeled CONTROL.
The control port provides connection to a VT 100 EIA-232
compatible interface, a device running SLIP protocol, or a device
running Async PPP protocol. An 8-foot adapter connector and
cable provide a standard DB-25 EIA-232 interface. See the
appendix Pinouts for the control port’s pin assignments. A
description of the operation of this port is covered in the Opera-
tion chapter.

The control port also functions as the SLIP or Async PPP port
when configured for SNMP management. The pinouts are
identical when operating in an SNMP management mode.

61204.011L1-1 DSU IV ESP User Manual 11

Chapter 2. Installation

12 DSU IV ESP User Manual 61204.011L1-1