ADTRAN DSU III S2W User Manual

Download

DSU III S2W

Data Service Unit

USER MANUAL

61200.015L2-1B October 1995

Trademarks:

DATAPATH is a registered trademark of CAE electronics and is used by Northern Telecom under license.

Hayes is a registered trademark of Hayes Microcomputer Products, Inc.

901 Explorer Boulevard

P.O. Box 070020

Huntsville, AL 35807

Phone: (205) 971-8000

Fax: (205) 971-8699

Printed in USA.

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 is 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. 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 56 kbps Digital Interface 04DU5-56 6.0F RJ-48S

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.

T able of Contents

Chapter 1. Introduction

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

General Datapath Description ................................................................................................ 3

W arranty and Customer Service ............................................................................................ 4

Chapter 2. Installation

Unpack, Inspect, Power Up..................................................................................................... 5

Receipt Inspection ............................................................................................................ 5

Equipment Provided.................................................................................................. 5

Equipment Sold Separately....................................................................................... 5

Power Up ........................................................................................................................... 6

Network Interface Connection ............................................................................................... 7

DTE Data Connection/Primary DTE ..................................................................................... 8

Dialport Connection .............................................................................................................. 10

Configuration ......................................................................................................................... 11

Configuration Methods .................................................................................................. 11

Front Panel ......................................................................................................................11

AT Commands ................................................................................................................ 12

V.25 bis Commands ....................................................................................................... 13

SDLC/HDLC Option ..............................................................................................13

Character Format.............................................................................................. 13

Command Structure......................................................................................... 13

Bi-Sync Option .........................................................................................................13

Character Format.............................................................................................. 13

Command Structure......................................................................................... 13

Asynchronous Option ............................................................................................. 14

Character Format.............................................................................................. 14

Command Structure......................................................................................... 1 4

Command Descriptions .......................................................................................... 14

Syntax and Possible Responses ..............................................................................15

CIC (Connect Incoming Call) ......................................................................... 15

CNL (Configuration Local)............................................................................. 15

Switched 56 Operation ...........................................................................................15

CRN (Call Request with Number) .................................................................. 15

CRS (Call Request Using Stored Number) .................................................... 16

DIC (Disregard Incoming Call)....................................................................... 16

61200.015L2-1 DSU III S2W User Manual i

T able of Contents

PRN (Program Number).................................................................................. 16

RLN (Request List of Numbers) ..................................................................... 17

Chapter 3. Operation

Menu Structure ...................................................................................................................... 19

LCD Display of the Main Menu ...................................................................... 19

Main Menu ..................................................................................................................... 20

Status ................................................................................................................. 20

T est..................................................................................................................... 20

Configuration (CONFIG) ................................................................................ 20

Dial..................................................................................................................... 20

Basic Menu Travel........................................................................................................... 21

Front Panel.............................................................................................................................. 23

LCD Window.................................................................................................... 23

Enter .................................................................................................................. 23

Numeric Keypad ............................................................................................... 23

Shift.................................................................................................................... 23

Quick ................................................................................................................. 24

Cancel ................................................................................................................ 24

Up and Down Arrows ...................................................................................... 24

LED Description ............................................................................................... 24

Rear Panel ............................................................................................................................... 25

Chapter 4. Configuration Overview

Local Configuration ............................................................................................................... 27

Chapter 5. Configuring Network Options

Network Options ................................................................................................................... 31

Echo Cancel.....................................................................................................................31

Adapt ................................................................................................................................33

Volume Control ..............................................................................................................34

Chapter 6. Configuring DTE Options

DTE Options........................................................................................................................... 35

DTE Rate.......................................................................................................................... 35

Connector Type .............................................................................................................. 37

Data Format..................................................................................................................... 38

DTE Command Option.................................................................................................. 39

Transmit Clock ...............................................................................................................41

CS Options ......................................................................................................................43

ii DSU III S2W User Manual 61200.015L2-1

T able of Contents

CD Options ..................................................................................................................... 45

TR Options ......................................................................................................................46

SR Options.......................................................................................................................47

Chapter 7. Configuring T est Options

T est Options ........................................................................................................................... 49

Test Timeout ................................................................................................................... 49

Remote Digital Loopback............................................................................................... 50

EIA Local Loopback .......................................................................................................51

EIA Remote Loopback ....................................................................................................52

Chapter 8. Configuring Dial Options

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

Phone Number ................................................................................................................53

Edit SC#........................................................................................................................... 54

Edit AD# .......................................................................................................................... 55

Auto Answer .................................................................................................................... 55

RS366 EON ..................................................................................................................... 56

Ring Again ....................................................................................................................... 57

Chapter 9. Manual Command

Manual Command ................................................................................................................. 59

Chapter 10. Dial Selection

Dial Options ........................................................................................................................... 63

Dial Stored #....................................................................................................................63

Enter Dial # ..................................................................................................................... 64

Speed Call........................................................................................................................65

Auto Dial ..........................................................................................................................66

Chapter 11. Testing and Troubleshooting

T est Overview ......................................................................................................................... 67

Initiating a Test .............................................................................................................. .68

Test Status Display.......................................................................................................... 69

Exiting a Test................................................................................................................... 69

T roubleshooting ..................................................................................................................... 71

Messages from the DSU/CSU ....................................................................................... 71

Troubleshooting New Installs........................................................................................ 73

Test Sequence for Troubleshooting New Installs or Existing Circuits ...............74

Local Unit Diagnostics ..........................................................................................................75

DTE & Loop (LL)........................................................................................................... 76

61200.015L2-1 DSU III S2W User Manual iii

T able of Contents

Test Description....................................................................................................... 76

Test Purpose............................................................................................................. 76

Initiating ................................................................................................................... 77

Interpreting Test Results .........................................................................................77

Loop Only (RT) ..............................................................................................................78

Test Purpose............................................................................................................. 78

Initiating ................................................................................................................... 78

Interpreting Test Results .........................................................................................79

DTE Only......................................................................................................................... 80

Test Purpose............................................................................................................. 81

Initiating ................................................................................................................... 81

Interpreting Test Results .........................................................................................81

DTE With Test Pattern ................................................................................................... 82

Test Purpose............................................................................................................. 82

Initiating ................................................................................................................... 82

Interpreting Test Results .........................................................................................83

Test Pattern...................................................................................................................... 84

Test Purpose............................................................................................................. 84

Initiating ................................................................................................................... 85

Interpreting Test Results .........................................................................................85

Self Test............................................................................................................................ 86

Test Purpose............................................................................................................. 86

Initiating ................................................................................................................... 86

Interpreting Test Results .........................................................................................86

Remote Unit Diagnostics................................................................................................ 87

Test Purpose............................................................................................................. 88

Initiating ................................................................................................................... 88

Test Results .............................................................................................................. 88

Interpreting Test Results .........................................................................................88

Chapter 12. Status Selection

Status Display .........................................................................................................................89

DSU Operational Status ................................................................................................. 90

Data Mode ......................................................................................................... 90

Network Status................................................................................................................ 90

Incoming Call/DTR Active............................................................................... 90

Data Mode/Loop is Normal ............................................................................ 90

Idle/Loss of TCM Sync ....................................................................................90

DTE Rate.......................................................................................................................... 90

DTE 56K Sync/Tx Clk Norm ..........................................................................90

iv DSU III S2W User Manual 61200.015L2-1

T able of Contents

DTE Clock .......................................................................................................................90

DTE Control Leads and Status ......................................................................................91

Appendix A. A T Commands .............................................................................................. 93

Appendix B. Default Configuration Profiles

Default Configuration Profiles.............................................................................................. 95

Profile 1 ............................................................................................................. 95

Profile 2 ............................................................................................................. 95

Profile 3 ............................................................................................................. 95

Profile 4 ............................................................................................................. 95

Appendix C. DSU to Modem Interconnect

Modem T ail Circuit Application ...........................................................................................99

Appendix D. EIA-232 Connector

56 and 64 kbps Application................................................................................................ 101

Appendix E. Specifications Summary

Specifications and Features................................................................................................. 103

Glossary ............................................................................................................................... 105

Index ..................................................................................................................................... 111

List of T ables

T able 2-A Pin Assignments for T elco Connector .............................................................. 7

T able 2-B Pin Assignments for Primary EIA-232 Connector........................................... 8

T able 2-C Pin Assignments for Primary V.35 Connector ................................................. 9

T able 2-D Pin Assignments for DIALPOR T Connector .................................................. 10

T able 5-A Echo Cancel Commands ................................................................................. 32

T able 5-B Adapt Commands............................................................................................. 33

T able 5-C Volume Level Commands ................................................................................ 34

T able 6-A DTE Rate A T Commands ................................................................................. 36

T able 6-B Data Format Commands.................................................................................. 38

T able 6-C DTE Command Descriptions .......................................................................... 40

T able 6-D T ransmit Clock A T Commands....................................................................... 41

T able 6-E CS Options A T Commands ............................................................................. 43

T able 6-F Short and Long Delays at Different Operating Speeds ................................. 44

T able 6-G CD Options A T Commands ............................................................................ 45

T able 6-H TR Options A T Commands .............................................................................46

T able 6-I SR Options A T Commands ............................................................................. 47

61200.015L2-1 DSU III S2W User Manual v

T able of Contents

T able 7-A T est Timeout A T Commands ...........................................................................50

T able 7-B Remote Digital Loopback A T Commands...................................................... 50

T able 7-C EIA Local Loopback A T Commands............................................................... 51

T able 7-D EIA Remote Loopback AT Commands ........................................................... 52

T able 8-A AT Command for Storing Phone Numbers.................................................... 54

T able 8-B AT Commands for Editing Speed Call Numbers........................................... 54

T able 8-C A T Command for Auto Dialing ....................................................................... 55

T able 8-D At Command for Auto Answer ........................................................................ 56

T able 8-E At Commands for Ring Again ......................................................................... 57

T able 9-A Manual Commands .......................................................................................... 61

T able 10-A A T Command for Dialing Stored Numbers.................................................... 64

T able 10-B A T Command for Dialing a Number .............................................................. 65

T able 10-C A T Command for Speed Calling ..................................................................... 65

T able 10-D A T Command for Auto Dial............................................................................. 66

T able 11-A Messages from the DSU/CSU ......................................................................... 72

T able 1 1-B T r oubleshooting New Installs ......................................................................... 73

T able 11-C T est A T Commands .......................................................................................... 75

T able 1 1-D DTE with T est Pattern Commands ................................................................. 75

T able 1 1-E Remote T ests and A T Commands ................................................................... 87

T able A-A AT Commands .................................................................................................. 93

T able B-A Default Configuration Profiles ........................................................................ 96

List of Figures

Figure 1-1 Sample Point-to-Point Application for DSU III S2W ....................................... 2

Figure 3-1 Example of Basic Menu T ravel ........................................................................ 22

Figure 3-2 DSU III S2W Front V iew ................................................................................. 23

Figure 3-3 DSU III S2W Rear View ...................................................................................25

Figure 4-1 Complete Configuration Menu ....................................................................... 29

Figure 5-1 Setting Echo Cancel Options .......................................................................... 32

Figure 5-2 Enabling/Disabling Adapt ............................................................................... 33

Figure 5-3 Adjusting the V olume Level ............................................................................. 34

Figure 6-1 DTE Rates ..........................................................................................................36

Figure 6-2 Selecting the Connector T ype ......................................................................... 37

Figure 6-3 Selecting Asynchronous or Synchronous Data Format................................. 38

Figure 6-4 Selecting DTE Command Option ................................................................... 39

Figure 6-5 T ransmit Clock Options .................................................................................. 41

Figure 6-6 Selecting CS Options ....................................................................................... 43

Figure 6-7 Selecting CD Options ...................................................................................... 45

Figure 6-8 Selecting TR Options ....................................................................................... 46

Figure 6-9 Setting SR Options ........................................................................................... 47

vi DSU III S2W User Manual 61200.015L2-1

T able of Contents

Figure 7-1 Setting T est T imeout Option ........................................................................... 49

Figure 7-2 Remote Digital Loopback ................................................................................ 50

Figure 7-3 EIA Local Loopback Options .......................................................................... 51

Figure 7-4 EIA Remote Loopback Options ...................................................................... 52

Figure 8-1 Editing Stored Phone Numbers ...................................................................... 53

Figure 8-2 Editing Speed Call Numbers ........................................................................... 54

Figure 8-3 Editing Auto Dial Numbers ............................................................................. 55

Figure 8-4 Enabling/Disabling the Auto Answer Function ............................................. 56

Figure 8-5 Selecting RS366 EON Options........................................................................ 56

Figure 8-6 Selecting Ring Again Options ......................................................................... 57

Figure 9-1 Manual Command............................................................................................ 59

Figure 10-1 Dial Options Menu........................................................................................... 63

Figure 10-2 Path to Storing Numbers ................................................................................. 64

Figure 10-3 Entering Dial Number...................................................................................... 64

Figure 10-4 Path to Speed Calling ....................................................................................... 65

Figure 10-5 Path to Auto Dialing ......................................................................................... 66

Figure 11-1 Normal Operation Before Initiating Loopback T est .................................... 67

Figure 11-2 Initiating a T est ...............................................................................................68

Figure 1 1-3 Sample T est Status Displays........................................................................... 69

Figure 1 1-4 Complete T est Menu....................................................................................... 70

Figure 11-5 DTE & Loop Test............................................................................................ 76

Figure 1 1-6 Initiating a DTE & Loop Test ........................................................................ 77

Figure 1 1-7 Loop Only T est ............................................................................................... 78

Figure 1 1-8 Initiating a Loop Only T est............................................................................ 78

Figure 1 1-9 DTE Only T est Diagram ................................................................................. 80

Figure 1 1-10 Initiating a DTE Only T est ............................................................................. 81

Figure 1 1-1 1 DTE with T est Pattern .................................................................................... 82

Figure 11-12 Initiating a DTE T est with T est Pattern......................................................... 83

Figure 11-13 T est Pattern Only ............................................................................................84

Figure 1 1-14 Initiating a T est Using a T est Pattern ............................................................ 85

Figure 1 1-15 Initiating a Self Test ........................................................................................86

Figure 1 1-16 V.54 Remote Digital Loopback with Test Pattern ........................................ 87

Figure 1 1-17 Initiating a Remote T est ................................................................................. 88

Figure 12-1 Example of Status Displays ............................................................................. 89

Figure C-1 DSU to Modem Interconnect .......................................................................... 99

Figure D-1 EIA-232 Connector ......................................................................................... 101

61200.015L2-1 DSU III S2W User Manual vii

T able of Contents

viii DSU III S2W User Manual 61200.015L2-1

PRODUCT OVERVIEW

The ADTRAN Data Service Unit III Switched 2-W ire (DSU III S2W) provides a reliable, high speed data connection from a customer’s Data T erminal Equipment (DTE) thr ough 2-wire Switched 56 (SW56) network lines. This type of SW56 service is generally referred to as DA T AP A TH®. The DSU III S2W supports both synchronous and asynchronous data communication over SW56 networks.

Chapter 1. Introduction

Chapter 1

Introduction

The DSU III S2W provides both V.35 and EIA-232 electrical and physical DTE interfaces to accommodate a variety of applications. A second DB-25 labeled EIA-366/232 pr ovides an EIA-366 parallel dialing interface. The unit features a receiver capability which permits operation over loops 14,000 ft on 26 AWG. Figure 1-1 shows a sample point-to-point application for the DSU III S2W .

61200.015L2-1 DSU III S2W User Manual 1

Chapter 1. Introduction

PCs

RINTER

ocal

rea

etwork

BRIDGE/ROUTER

SERVER

DEDICATED

PRIVATE NETWORK

POWER SUPPLYPOWER SUPPLY POWER SUPPLYPOWER SUPPLY

+5V+5V

+12V+12V

-12V-12V

-5V-5V

CHECKCHECK

DSU III ARDSU III AR DSU III ARDSU III AR DSU III ARDSU III ARDSU III ARDSU III AR DSU III S4WDSU III S4WDSU III S4WDSU III S4WDSU III S4WDSU III S4W DSU III DBUDSU III DBUDSU III S4WDSU III S4W DSU III DBUDSU III DBUDSU III DBUDSU III DBUDSU III DBUDSU III DBU DSU S2WDSU S2W DSU S2WDSU S2W DSU S2WDSU S2W

SHELFSHELF

CONTROLLERCONTROLLER

RSRS

CSCS

TDTD

RDRD

CDCD

ALMALM

DTEDTE

LOOPLOOP

RDLRDL

PTRNPTRN

ERRORERROR

DIALMATE

DIAL STATUS

CANCEL

TEST CONFIG ENTER

SELECTSELECT

TESTTEST

1 2 3

4 5 6

7 8 9

1 1622 33 44 55 66 77 88 99 1010 1111 1212 1313 1414 1515

2 or 4 wire SW56

RSRS

CSCS

TDTD

RDRD

CDCD

ALMALM

DTEDTE

LOOPLOOP

RDLRDL

PTRNPTRN

ERRORERROR

SELECTSELECT

TESTTEST

PUBLIC SWITCHED DIGITAL NETWORK

2 or 4 wire SW56

DSU III DBUDSU III DBU

1 2 3

ENTER

DAEBF 4 5 6

RS CS TD RD CD ALM TSTRS CS TD RD CD ALM TST

7 8 9 SHIFT SHIFT

CANCEL

DSU III S2W

Sample Point-to-Point Application for DSU III S2W

+5V+5V

+12V+12V

-12V-12V

-5V-5V

CHECKCHECK

RSRS

CSCS

TDTD

RDRD

CDCD

ALMALM

DTEDTE

LOOPLOOP

RDLRDL

PTRNPTRN

ERRORERROR

SELECTSELECT

TESTTEST

ISDN

NETWORK

MART 16 SHELF

V.32bis

PUBLIC SWITCHED

TELEPHONE NETWORK

V.32bis

BRIDGE/ROUTER

PRINTER

ocal

rea

etwork

Figure 1-1

SERV

2 DSU III S2W User Manual 61200.015L2-1

GENERAL DATAP ATH DESCRIPTION

DA T AP A TH is a 2-wire switched digital service offer ed by the local service provider . The services are generally provided by the Northern T elecom DMS/SL 100 family of Central Office switches. DA TAP A TH is always switched, which allows the customer to pay for high speed data transfer only when a call is active. The dial-up service is delivered by a 2-wire local loop up to 14,000 feet long on 26 A WG. The DSU III S2W uses a bipolar r eturn-to-zero type of signal in a ping-pong (Time Compr ession Multiplexing) format.

Another basic component of DA T AP A TH technology is T-Link rate adaption protocol which adapts user data rates into network transport bit streams of 56 or 64 kbps. The units will connect and negotiate the most efficient rate at which to send data. The ADTRAN DSU III S2W can communicate and rate adapt with any T-Link compatible device. It can also interface with non T -Link compatible devices at 56 or 64 kbps, allowing the user to place a call to a 4-wire SW56 network or ISDN device.

Chapter 1. Introduction

61200.015L2-1 DSU III S2W User Manual 3

Chapter 1. Introduction

WARRANTY AND CUSTOMER SERVICE

ADTRAN will replace or repair this product within five years fr om 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 requir ed prior to returning equipment to ADTRAN.

For service, RMA r equests, or further information, contact one of the numbers listed on the inside back cover of this manual.

4 DSU III S2W User Manual 61200.015L2-1

UNPACK, INSPECT , POWER UP Receipt Inspection

Carefully inspect the DSU III S2W for any shipping damages. 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 III S2W for repair or for verification of damage during shipment.

Chapter 2. Installation

Chapter 2

Installation

Equipment Provided

The following items are included in ADTRAN shipments of the DSU III S2W:

• DSU III S2W unit

• A 6-position modular to 6-position modular line interface cable

• The user manual

Equipment Sold Separately

The customer must provide an EIA-232 interface cable with standard 25-pin male D-type connectors (Cannon or Cinch DB19604-432) or V.35 cable, and a cable for the EIA-366 Dialport if used.

61200.015L2-1 DSU III S2W User Manual 5

Chapter 2. Installation

Power Up

Each DSU unit is provided with a captive eight-foot power cord, terminated by a three-prong plug which connects to a grounded 115 VAC power receptacle. A telco connector is also provided for interface to the network.

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

6 DSU III S2W User Manual 61200.015L2-1

NETWORK INTERFACE CONNECTION

The DSU III S2W has a six-position modular jack labeled TELCO. The connector is used for connecting to the network when the unit is configured for either dedicated or switched operation. The pin assignments for the telco connector are listed in T able 2-A.

Pin Name Description

1 Not used 2 Not used 3 T Network interface, tip 4 R Network interface, ring 5 Not used 6 Not used

Chapter 2. Installation

Table 2-A

Pin Assignments for T elco Connector

61200.015L2-1 DSU III S2W User Manual 7

Chapter 2. Installation

(TI)

DTE DATA CONNECTION/PRIMARY DTE

The primary DTE should be connected to either the EIA-232 DTE connector or the CCITT V.35 DTE connector. The maximum cable lengths recommended are 50 feet for the EIA-232 and 100 feet for the CCITT V.35. The pin assignments for the connectors are listed in Tables 2-B and 2-C.

The V .35 connector is r ecommended 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 can operate in asynchronous or synchronous modes.

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

Pin Assignments for Primary EIA-232 Connector

Pi n EIA Description

1 AA Protective Ground (PG) 2 BA Transmit Data (TD) 3 BB Receive Data (RD) 4 CA Request to Send (RS) 5 CB Clear to Send (CS) 6 CC Data Set Ready (SR) 7 AB Signal Ground (SG) 8 CF Received Line Signal Detector (C

9 - +12 Test Point 10 - -12 Test Point 15 DB Transmit Clock (TC) 1 7 DD Receive Clock (RC) 18 - Local Loopback (LL) 2 0 CD Data Terminal Ready (TR) 21 - Remote Loopback (RL) 2 2 CE Ring Indicator (RI) 2 4 DA External TX Clock (ETC) 2 5 - Test Indicator

Table 2-B

8 DSU III S2W User Manual 61200.015L2-1

Chapter 2. Installation

(

)

Table 2-C

Pin Assignments for Primary V .35 Connector

Pin CCITT Description

A 101 Protective Ground (PG)

B 1 0 2 Signal Ground (SG) C 10 5 Request to Send (RS) D 1 0 6 Clear to Send (CS)

E 1 0 7 Data Set Ready (SR)

F 1 0 9 Received Line Signal Detector (C H - Data Terminal Ready (TR)

J - Ring Indicator (RI)

L - Local Loopback (LL) N - Remote Loopback (RL)

R 10 4 Received Data (RD-A)

T 1 0 4 Received Data (RD-B)

V 11 5 Receiver Signal Element Timing

X 11 5 Receiver Signal Element Timing

P 103 Transmitted Data (SD-A)

S 103 Transmitted Data (SD-B)

Y 114 Transmitter Signal Element Timi

AA 114 Transmitter Signal Element Timi

U 1 13 External TX Signal Element (SC

W 113 External TX Signal Element (SC

NN - Test Indicator (TI

61200.015L2-1 DSU III S2W User Manual 9

Chapter 2. Installation

DIALPORT CONNECTION

If used, the DTE dialing interface should be connected to the EIA366/232 connector . The DIALPORT connector services an EIA-366 T ype III interface. The pinout for the connector when used as EIA366 is shown in T able 2-D.

Pi n EI A I/O Description

1 Shield I/O Shield for cable 2 DPR I Digit Present 3 ACR O Abandon Call and Ret 4 CRQ I Call Request 5 PND O Present Next Digit 6 PWI O Power Indicator

7 SG I/O Signal Ground 1 3 DSC O Distant Station Conne 1 4 NB1 I Digit LSB 15 NB1 I Digit Bit 2 16 NB4 I Digit Bit 3 1 7 NB8 I Digit MSB 18 RC O Receive Common 19 S C I Send Common 22 DLO O Data Line Occupied

8 thru 1

20, 21,

thru 25

T able 2-D

Pin Assignments for DIALPORT Connector

NC N/A No Connection

10 DSU III S2W User Manual 61200.015L2-1

CONFIGURATION

The DSU III S2W contains four different user profiles (sets of configurations options) that are stored in read only memory. These profiles are listed in the appendix Default Configuration Profiles. The unit is shipped from the factory with profile 1 (default configuration) loaded into the nonvolatile configuration memory . If pr ofile 1 matches the desired system requirements, then no additional configuration is required to put the unit into service. If profile 1 does not match the desired system requirements, modify the default configuration or select another profile more closely matching the desired configuration and modify .

When a new profile is loaded or the existing profile is modified, it is stored in the nonvolatile configuration memory. The DSU III S2W is then configured with that profile every time power is turned on or reset. See the chapter Manual Command for information on loading default configuration profiles.

Configuration Methods

The DSU III S2W provides three methods for local configuration: front panel, A T commands (in-band or via contr ol port), and V.25 bis.

Chapter 2. Installation

Front Panel

The Front Panel provides access to all operation parameters of the DSU III S2W through a multi-level menu structure which begins with the four-part Main menu. ST ATUS - displays status of network and DTE interface TEST - controls local and remote testing CONFIG - displays/changes current configuration parameters DIAL - provides manual dialing functions

61200.015L2-1 DSU III S2W User Manual 11

Chapter 2. Installation

AT Commands

The DSU III S2W can be configured and controlled with in-band A T commands from an asynchronous DTE port just as modems are.

T o exit the data mode and enter the command mode, the asynchronous DTE device must transmit a proper escape sequence or three pluses (+++) to the DSU III S2W . A specified time delay must occur between the last data character and the first escape sequence character . This is the guard time delay, and it can be changed by writing a value to the S12 register . The default value for the guard time is one second. For a valid escape sequence to occur , the DTE must transmit the escape code character three times in succession with delay between each character being less than the guard time.

Once the command mode is entered, A T commands can be transmitted to the DSU III S2W to configure most of the options or initiate tests to check both the DSU III S2W and the network connections. All command lines must begin with the A T character set in either capital or lower case letters.

The command line may contain a single command or a series of commands after the A T attention code. When a series of commands is used, the individual commands may be separated with spaces for readability . The maximum length for a command line is 40 characters. Each command line is executed by the DSU III S2W upon receipt of a terminating character . The default terminating character is a carriage return (ASCII 013), but it can be changed by writing a different value to register S3.

Before the terminating character is transmitted, the command line can be edited by using the backspace character (ASCII 008) to erase errors so the proper commands can be entered. Valid A T commands for the DSU III S2W are listed in the appendix AT

Commands.

12 DSU III S2W User Manual 61200.015L2-1

V .25 bis Commands

When configured for the V.25 bis option, the DSU III S2W accepts in-band dialing and configuration commands from both synchronous and asynchronous DTE ports.

The V .25 bis option supports the following pr otocols:

• SDLC/HDLC

• Bi-Sync

• Asynchronous

SDLC/HDLC Option

Character Format

• Data bits - 8

• Parity bit - Ignored

Command Structure

[F][A][C][V.25 bis COMMAND][FCS][F]

The address field [A] is FFH. The control field [C] is set to 13H except for cases of multi-frame responses. For this case, the control field is set to 03H in all but the last frame. The 03H in the control field indicates that other frames are to follow while the 13H in the control field indicates the final frame.

Chapter 2. Installation

Bi-Sync Option

Character Format

• Data bits - 7

• Parity bit - Odd

Command Structure

[SYN][SYN][STX][V.25 bis COMMAND][ETX]

61200.015L2-1 DSU III S2W User Manual 13

Chapter 2. Installation

Asynchronous Option

Command Descriptions

Character Format

• Start bit - 1

• Data bits - 7

• Parity bit - Even

• Stop bit - 1

Command Structure

[V.25 bis COMMAND][CR][LF]

The ADTRAN V.25 bis command set is a subset of the CCITT V .25 bis command set. In addition to the CCITT commands supported, ADTRAN has added configuration commands for local DSUs. The ADTRAN V.25 bis command set follows:

CIC Connect incoming call CN L Configuration local CR N Call request with number CRS Call request using stored number DIC Disregard incoming call PR N Program number R LN Request list of numbers

The following list contains possible responses to V.25 bis commands:

VAL V alid V.25 command processed IN V A n invalid command detected CFIET Call failed on switched network - busy detected CFIDE Call failed on switched network - no wink detected CFINS Call failed - no dial string in specified register INVCU Unknown command detected INVPS Invalid parameter syntax INVPV Invalid parameter value IN C Incoming call CN X Call connected

14 DSU III S2W User Manual 61200.015L2-1

If verbose (wordy) responses are disabled (A TV0), the following list of three-character responses are the only ones r eturned:

VAL V alid V.25 command processed IN V Invalid command received CFI Call failed IN C Incoming call CN X Call connected

Syntax and Possible Responses

CIC (Connect Incoming Call)

This command causes the DSU to go on-line. There are no parameters associated with this command. Possible indications include V AL, CNX, and CFIxx.

CNL (Configuration Local)

This command is used to pass A T commands to the local modem via the V .25 bis command pr ocessor . This allows the DSU III S2W to be configured with A T commands via a synchr onous interface. The command has the following format:

Chapter 2. Installation

CNL AT[ONE OR MORE AT COMMANDS]

Responses to CNL commands are r eturned in the data format currently configured. Possible responses include VAL and INVn.

Switched 56 Operation

CRN (Call Request with Number)

When the DSU III S2W is configured for SW56 operation, the CRN command causes the DSU to dial the supplied number . The command's format follows:

CRN[NUMBER TO BE DIALED]

If no number is included in the command, the number stored in dial register number 1 is dialed. If no number is provided and no

61200.015L2-1 DSU III S2W User Manual 15

Chapter 2. Installation

number is stored in dial register number 1, the DSU III S2W responds with the call failure indication CFINS (Call Failure Indication Not Stored). Possible responses include VAL, CNX, and CFIxx.

CR S (Call Request Using Stored Number)

The CRS command causes the DSU III S2W to dial the number stored in the specified register . The format of this command is as follows:

CRS [OPTIONAL SPACE][REGISTER NUMBER 1-10]

If this command is issued without the register number parameter , the INVPS (Invalid Parameter Syntax) response is issued. If this command is issued and the register parameter is not in the valid range for dialing registers, the INVPV (Invalid Parameter V alue) response is returned. Other responses include VAL, CNX, and CFIxx.

DIC(Disregard Incoming Call)

This command causes the V .25 bis pr ocessor to return to command mode even if there is an incoming call pending. This allows local commands to be issued and incoming calls to be ignored. There are no parameters associated with this command. The DSU responds with V AL.

PRN (Program Number)

This command stores the supplied number into the specified register . The command has the following format:

PRN REGISTER NUMBER;[NUMBER TO BE STORED]

If this command is entered with no parameters, the INVPS response is returned. If no register number is included in the command or if it is invalid, the INVPV response is returned. This response is also returned if the number to be stored contains invalid characters. The characters 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, P, T, and & are valid dial characters. If no digits are issued with this command, the specified register is cleared. The DSU responds with V AL.

16 DSU III S2W User Manual 61200.015L2-1

Chapter 2. Installation

RLN (Request List of Numbers)

This command causes the DSU III S2W to return the number stored in the specified register . The format of this command follows:

RLN [REGISTER NUMBER]

If the register number is invalid, the INVPV response is returned. When a correct register number is entered, the following r esponse is returned:

LSN [REGISTER NUMBER];[NUMBER STORED]VAL

If no register number is present in the command, the DSU III S2W responds with a list of all the registers and the stored numbers. This list is followed by the V AL response.

61200.015L2-1 DSU III S2W User Manual 17

Chapter 2. Installation

18 DSU III S2W User Manual 61200.015L2-1

MENU STRUCTURE

The DSU III S2W uses a multilevel menu approach to access its many features. All menu operations ar e displayed in the LCD window .

The opening menu is the access point for all other operations. There are four Main menu branches: Status, T est, Configuration and Dial.

Chapter 3. Operation

Chapter 3

Operation

Each Main menu item has several functions and sub-menus to identify and access specific parameters.

LCD Display of the Main menu

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

T o choose an item, press the number on the keypad corr esponding with that item. That item will flash on and off to show that it is the currently active choice. Pressing either the Up or Down Arrow will deselect the current choice (it will stop flashing). Press the Enter key to select the item.

61200.015L2-1 DSU III S2W User Manual 19

Chapter 3. Operation

Main Menu

The following paragraphs briefly describe the Main menu's four branches. More detailed information is provided in the individual chapters for each branch.

Status

Status is used to display all relevant information for the network and DTE interfaces. It displays the current operating mode, loop status, DTE data rate and format, and TR, SR, LL, and RL DTE interface lead status. The display returns to the Status menu when the front panel is not accessed. Refer to the chapter Status Selection for more detailed information.

T est

T est is used to control local and r emote testing. Select local or remote testing, and select the type of test and test pattern when required. For more information see the chapter , Testing and

T roubleshooting.

Configuration (CONFIG)

Configuration is used to select network and DTE operating parameters. This menu branch is divided into several chapters for easier reference. The division includes a brief overview chapter followed by a separate chapter for each of the five sub-menus of the CONFIG branch: Configuring Network Options, Configuring DTE

Options, Configuring T est Options, Configuring Dial Options, and Manual Command.

Dial

Dial provides dialing functions. Select a previously stored number , key in a number to dial, or use the speed call and autodial functions which must be purchased from the telco provider . See the chapter , Dial Selection, for more information.

20 DSU III S2W User Manual 61200.015L2-1

Basic Menu Travel

Four function keys on the left side of the DSU III S2W keypad allow the various menu branches to be entered, exited, and scrolled through. The four function keys are defined below .

Enter selects an activated item Up Arrow scrolls up the sub-menu items Down Arrow scrolls down the sub-menu items Cancel exits (back one level) from the current branch

T o choose a menu item, press the corr esponding number or alpha character on the keypad (press Shift to activate the alpha selections). The item flashes on and off to show it is the currently selected (active) choice. Pressing either the Up or Down Arrow scrolls through the available menu items. Pressing Enter selects the flashing item.

The following example and Figure 3-1 illustrate how to select the ECHO CANCEL option.

Chapter 3. Operation

of the menu

1. Select Configuration (CONFIG) by pressing 3, then press Enter.

2. Use the Up and Down Arrows to view sub-menu items.

3. Choose an item on the sub-menu such as Network Options (NETWORK OPT).

4. To select NETWORK OPT press 1, then press Enter.

5. To select ECHO CANCEL, press 1, then pr ess Enter.

61200.015L2-1 DSU III S2W User Manual 21

Chapter 3. Operation

3=CONFIG2=DTE OPTIONS 3=VOLUME CNTL

1=ECHO CANC

1=NETWORK OPT. 2=ADAPT

3=TEST OPTIONS 4=DIAL OPTIONS

5=MANUAL COMMAND

Figure 3-1

Example of Basic Menu T ravel

22 DSU III S2W User Manual 61200.015L2-1

FRONT PANEL

Chapter 3. Operation

The DSU III S2W faceplate is shown in Figure 3-2.

DSU III S2W

RS CS TD RD CD ALM TST

The following function descriptions apply to the stand alone S2W .

LCD Window

Displays menu items and messages in 2 lines by 16 characters.

Enter

Selects active menu items. T o activate a menu item, press the number of the item. When the menu item is flashing, press Enter to select it. A sub-menu item is invoked or a configuration parameter is set. The display of COMMAND ACCEPTED indicates a valid operation.

ENTER

CANCEL

A 1

45ED6

789

SHIFT

C 3

QUICK

Figure 3-2

DSU III S2W Front V iew

Numeric Keypad

The numeric keypad contains the numbers 0 through 9 and alpha characters A through F, which are used to activate menu items. Numbers 0 through 9 are also used to enter parameters.

Shift

Alpha characters are entered by pressing Shift before each desired character . T o activate a menu item designated by an alpha character rather than a number , display the menu item using the Up and Down Arrows , pr ess Shift and then the letter . Press Enter to select the item.

61200.015L2-1 DSU III S2W User Manual 23

Chapter 3. Operation

If a key is pressed without using Shift, the numbered item becomes active instead of the alpha item. If this happens, repeat the correct procedure.

Quick

During most operations, the Quick key returns the display to the Main menu. During a test, the Quick key returns to the top of the T est menu.

Cancel

The Cancel key stops the current activity and returns to the previous menu. Repeat until the desired menu level is reached.

Up and Down Arrows

The Up and Down Arrows scroll through the sub-menu items available in the current menu. Sub-menu items appear two at a time in a circular or wrapping fashion. When the sub-menu items are scrolled, they continuously appear from beginning to end in a forward (Down Arrow) or reverse (Up Arrow) pattern.

LED Description

The DSU III S2W has seven LED indicators: RS, CS, TD, RD, CD, ALM and TST . These LEDs are identified as follows:

RS : Request to Send CS: Clear to Send TD: T ransmit Data RD: Receive Data CD: Carrier Detect ALM: Alarm Indication TST : Test Mode

24 DSU III S2W User Manual 61200.015L2-1

REAR PANEL

Chapter 3. Operation

The rear panel contains three DTE connectors which provide primary channel V .35 or EIA-232 and a Dialport (auxiliary EIA 366/232). A 6-pin telco jack, a captive power cord, and a power switch are also located on the rear panel. Pin assignments for the DTE and network connections are listed in the chapter Installation. The DSU III S2W rear panel is shown in Figure 3-3.

TELCO

EIA 366/232

PRIMARY V.35

PRIMARY EIA-232

115 VAC

60HZ .15A

OFF

Identification of Numbers

Item Function

1. Auxiliary EIA-366/232 EIA-366/232 dialport

2. Power Switch Used to turn power on or off

3. Telco Connection Connection to the dedicated circuit

4. Primary EIA-232 DTE interface

5. Primary V.35 High speed digital data interface

6. 1 15 V AC Connection Power cord connection

Figure 3-3

DSU III S2W Rear V iew

61200.015L2-1 DSU III S2W User Manual 25

Chapter 3. Operation

26 DSU III S2W User Manual 61200.015L2-1

LOCAL CONFIGURATION

The Configuration menu consists of a group of five sub-menus relating to a specific interface or function of the DSU III S2W that requires setup.

1=Network Opt. Network Interface Parameters 2=DTE Options DTE Interface Parameters 3=T est Options Unit Test Options 4=Dial Options Unit Dialing Options 5=Manual Command ADTRAN Specific Commands

Chapter 4. Configuration Overview

Chapter 4

Configuration Overview

The DSU III S2W contains four different user profiles (sets of configurations options) that are stored in read only memory (see the appendix, Default Configuration Profiles). The unit is shipped from the factory with profile number 1 (default configuration) loaded into the current (nonvolatile configuration) memory. If profile 1 matches requirements for the system, then no additional configuration is required to put the unit into service. If profile 1 does not match system requirements it can be modified, or one of the other profiles that more closely matches the system r equirements can be loaded into current memory. When a different profile is loaded, or the existing profile is modified, it is stored in the current (nonvolatile configuration) memory. The DSU III S2W is then configured with that profile every time power is turned on or until the unit is reset.

61200.015L2-1 DSU III S2W User Manual 27

Chapter 4. Configuration Overview

For detailed information on configuration see the chapters Configuring Network Options, Configuring DTE Options, Configuring T est Options, Configuring Dial Options, and Manual Command.

A complete Configuration menu is shown in Figur e 4-1.

28 DSU III S2W User Manual 61200.015L2-1

Chapter 4. Configuration Overview

(Fold Out of Complete Configuration Menu belongs here)

61200.015L2-1 DSU III S2W User Manual 29

Chapter 4. Configuration Overview

30 DSU III S2W User Manual 61200.015L2-1

Chapter 4. Configuration Overview

1=DTE 1.2k 2=DTE 2.4k

1=DISABLE 4=DTE 9.6k

1=ECHO CANCEL 3=ENABLE ANSW 6=DTE 38.4k

1=NETWORK OPT. 1=DTE RATE 8=DTE 56k/57.6k

2=DTE OPTIONS 5=V.25 SYNC (FLG)

3=TEST OPTIONS 3=EIA LLB EN/DIS 1=DISABLED 5=OFF WITH LOCD

3=CONFIG 5=OFF>ON DIAL #2 1=FORCED ON

4=DIAL OPTIONS EDIT (1-10): NNNNNNN

5=MANUAL COMMANDCOMMAND:00 VALUE:00

2=ADAPT 1=DISABLED 9=DTE 64k

3=VOLUME CNTL VOLUME LEVEL 1=EVEN PARITY

1=TEST TIMEOUT (0=OFF) : 00 SEC 2=EXTERNAL 2=FOLLOWS RS 1=CS DELAY SHORT 2=RDL EN/DIS 1=RDL IGNORED

4=EIA RLB EN/DIS 1=DISABLED 2=NORMAL

1=PHONE NUMBERSEDIT (1-10): NNNNNNN 4=OFF TEST ONLY 2=EDIT SC# SPEED CALL # TO 6=OFF TEST +LOCD

3=EDIT AD # NNNNNNN 4=AUTO ANSWER 1=DISABLED

5=RS366 EON 1=DISABLED

6=RING AGAIN 1=DISABLED

2=ENABLE ORIG. 5=DTE 19.2k 4=ENABLE BOTH 7=DTE 48k

2=ENABLED 3=NO T-LINK 57.6 1=RS-232

(0-3):0 3=DATA FORMAT 1=ASYNCHRONOUS 1=ASYNC 7 BITS 2=MARK PARITY 1=1 STOP BIT

ENTER TIMEOUT 5=TRANSMIT CLOCK 1=NORMAL 1=FORCED ON

2=RDL ACCEPTED 4=FOLLOWS RS+CD 1=CS DELAY SHORT

2=ENABLED

2=ENABLED 1=IGNORED 3=OFF WITH LOCD

STORED NUMBER TO 3=OFF LOCD ONLY

2=ENABLED

COMMAND:HH

2=CONNECTOR TYPE 2=V.35

4=DTE CMD OPTION 2=AT COMMAND SET

6=CS OPTIONS 3=FOLLOWS CD 2=CS DELAY LONG

7=CD OPTIONS 1=FORCED ON

8=TR OPTIONS 2=LEASED LINE

9=SR OPTIONS 2=OFF IDLE ONLY

3=DTE 4.8k

2=SYNCHRONOUS 2=ASYNC 8 BITS 3=ODD PARITY 2=2 STOP BITS 1=DISABLED 3=V.25 SYNC

4=V.25 BSC/ASYNC

3=IDLE WHEN OFF 4=OFF>ON DIAL #1

5=OFF TEST +IDLE

4=NO PARITY

2=CS DELAY LONG

Figure 4-1

Complete Configuration Menu

61200.015L2-1 DSU III S2W User Manual 29

NETWORK OPTIONS

The NETWORK OPTIONS configuration parameters control the loop operation of the DSU III S2W . Once a parameter is set, Command Accepted is displayed briefly before returning to the active menu.

Echo Cancel

Chapter 5. Configuring Network Options

Chapter 5

Configuring Network Options

The ECHO CANCEL option enables/disables a PCM encoded 2100 Hz tone transmitted for one half second that causes the digital network to disable echo suppressors and echo cancellers so that digital signals proceed unimpeded.

61200.015L2-1 DSU III S2W User Manual 31

Chapter 5. Configuring Network Options

1=NETWORK OPT.

3=CONFIG2=DTE OPTIONS

3=TEST OPTIONS 4=DIAL OPTIONS 5=MANUAL COMMAND

The default factory setting is ENABLE ANSW . The selections ar e listed in T able 5-A with the equivalent A T commands that perform the same configuration functions.

1=DISABLE 2=ENABLE ORIG.

1=ECHO CANCEL3=ENABLE AN

4=ENABLE BOTH

2=ADAPT 3=VOLUME CNTL

Figure 5-1

Setting Echo Cancel Options

Table 5-A

Echo Cancel Commands

Front Panel

Command

Description

1=DISABLE & L 0 Echo cancel disabled 2=ENABLE ORIG &L1 Echo cancel on originate 3=ENABLE ANSW &L2 Echo cancel on answer 4=ENABLE BOTH &L3 Echo cancel on ori

inate and an

32 DSU III S2W User Manual 61200.015L2-1

Adapt

The ADAPT option enables/disables the DSU to rate adapt to its far end unit. Figure 5-2 shows the menu path used to enable or disable ADAPT . The factory default setting is ENABLED.

The NO T-LINK 57.6 selection disables the T-link operation when 56K/

57.6K is selected for immediate connection to a non T-link far end unit.

3=CONFIG 1=NETWORK OPT.

2=DTE OPTIONS 1=DISABLED 3=TEST OPTIONS 2=ADAPT 2=ENABLED

4=DIAL OPTIONS 3=NO T-LINK 57. 5=MANUAL COMMAND 3=VOLUME CNTL

T able 5-B shows the A T commands for this option.

Chapter 5. Configuring Network Options

1=ECHO CANCEL

Figure 5-2

Enabling/Disabling Adapt

Table 5-B

Adapt Commands

Front

Panel

Command

Description

1=DISABLE TL0 Disables Adapt 2=ENABLE T L1 Enables Adapt

3=NO T-LINK 57.6 TL2

Disables T-Link operation 56K/57.6K

61200.015L2-1 DSU III S2W User Manual 33

Chapter 5. Configuring Network Options

V olume Control

The VOLUME CNTL option allows the volume level to be adjusted. Figure 5-3 shows the menu path for controlling the volume. The factory default setting is OFF .

1=NETWORK OPT. 1=ECHO CANCEL 2=DTE OPTIONS 2=ADAPT

3=CONFIG3=TEST OPTIONS

4=DIAL OPTIONS VOLUME LE 5=MANUAL COMMAND 3=VOLUME CNTL(0-3): 0

T able 5-C shows the equivalent A T commands for adjusting the volume level.

Front Panel

0 L0 Volume off 1 L1 Volume low 2 L2 Volume medium 3 L3 Volume hi

Command

Figure 5-3

Adjusting the V olume Level

Table 5-C

V olume Level Commands

Description

34 DSU III S2W User Manual 61200.015L2-1

DTE OPTIONS

DTE Rate

Chapter 6. Configuring DTE Options

Chapter 6

Configuring DTE Options

The DTE OPTIONS menu is used to select the configuration parameters that control the operation of the DSU III S2W's DTE interface.

The DTE RA TE option sets the operating speed of the DTE interface. The supported DTE rates for a SW56k loop are shown in Figure 6-1. The factory default setting is 56k/57.6k.

61200.015L2-1 DSU III S2W User Manual 35

Chapter 6. Configuring DTE Options

n n n

n s s

1=NETWORK OPT. 1=DTE 1.2k

1=DTE RATE 3=DTE 4.8k

2=DTE OPTIONS 5=DTE 19.2k

2=CONNECTOR TYPE 7=DTE 48k 3=DATA FORMAT 8=DTE 56k/57. 4=DTE CMD OPTION 9=DTE 64k

3=CONFIG 5=TRANSMIT CLOCK

6=CS OPTIONS 7=CD OPTIONS 8=TR OPTIONS

9=SR OPTIONS 3=TEST OPTIONS 4=DIAL OPTIONS 5=MANUAL COMMAND

The equivalent A T commands for setting the DTE rate are shown in T able 6-A.

2=DTE 2.4k 4=DTE 9.6k 6=DTE 38.4k

Figure 6-1

DTE Rates

Table 6-A

DTE Rate AT Commands

Front Panel

Command

Description

1=DTE 1.2k %K1 DTE rate 1.2k sync and asy 2=DTE 2.4k %K2 DTE rate 2.4k sync and asy 3=DTE 4.8k %K3 DTE rate 4.8k sync and asy 4=DTE 9.6k %K4 DTE rate 9.6k sync and asy 5=DTE 19.2k %K5 DTE rate 19.2k sync and a 6=DTE 38.4k %K6 DTE rate 38.4k sync and a

7=DTE 48k %K7 DTE rate 48k sync (will dis

commands on control port) 8=DTE 56k/57.6k %K8 DTE rate 56k sync or 57.6 9=DTE 64k % K9 DTE rate 64k sync

36 DSU III S2W User Manual 61200.015L2-1

Connector T ype

The CONNECTOR TYPE option is used to specify which of the primary channel connectors is used to connect to the DTE. Figure 6-2 shows the menu path used to set the connector type. The factory default setting is V .35. Ther e are no A T commands available to set the connector type.

1=NETWORK OPT.

1=DTE RATE

2=DTE OPTIONS 1=RS-23

2=CONNECTOR TYPE2=V.35

3=DATA FORMAT 4=DTE CMD OPTION

3=CONFIG 5=TRANSMIT CLOCK

6=CS OPTIONS 7=CD OPTIONS 8=TR OPTIONS

9=SR OPTIONS 3=TEST OPTIONS 4=DIAL OPTIONS 5=MANUAL COMMAND

Chapter 6. Configuring DTE Options

Figure 6-2

Selecting the Connector T ype

61200.015L2-1 DSU III S2W User Manual 37

Chapter 6. Configuring DTE Options

Data Format

The DA T A FORMA T option is used to select either the SYNCHRONOUS or ASYNCHRONOUS mode of operation for the DTE interface. The factory default setting is SYNCHRONOUS (see Figure 6-3). If ASYNCHRONOUS is chosen then byte length, parity , and stop bit information must be selected. The default settings are 8 bit bytes with no parity and one stop bit.

1=NETWORK OPT.

1=DTE RATE 2=CONNECTOR TYPE

2=DTE OPTIONS

3=DATA FORMAT1=ASYNCHRONOUS 1=ASYNC 7 BITS

3=CONFIG 4=DTE CMD OPTION

5=TRANSMIT CLOCK 6=CS OPTIONS 7=CD OPTIONS 8=TR OPTIONS

9=SR OPTIONS 3=TEST OPTIONS 4=DIAL OPTIONS 5=MANUAL COMMAND

2=SYNCHRONOUS

2=ASYNC 8 BITS

Figure 6-3

Selecting Asynchronous or Synchronous Data Format

T able 6-B shows the A T commands that can be used to set the DA TA FORMA T to ASYNCHRONOUS or SYNCHRONOUS.

Table 6-B

Data Format Commands

Front Panel

Command

Description

1=ASYNCHRONOUS &Q0 Always asynchronous 2=SYNCHRONOUS & Q2 Always synchronous

38 DSU III S2W User Manual 61200.015L2-1

Chapter 6. Configuring DTE Options

C )

DTE Command Option

The DTE COMMAND option is used to enable the DTE interface for one of four command modes or disable all DTE command modes (see Figure 6-4). The default setting is DISABLED.

1=NETWORK OPT.

1=DTE RATE 2=CONNECTOR TYPE 3=DATA FORMAT

2=DTE OPTIONS 4=DTE CMD OPTION2=AT COMMAND S

3=CONFIG 5=TRANSMIT CLOCK

6=CS OPTIONS 7=CD OPTIONS

8=TR OPTIONS

9=SR OPTIONS 3=TEST OPTIONS 4=DIAL OPTIONS 5=MANUAL COMMAND

1=DISABLED

3=V.25 SYNC 4=V.25 BSC/ASYN

5=V.25 SYNC (FLG

Figure 6-4

Selecting DTE Command Option

61200.015L2-1 DSU III S2W User Manual 39

Chapter 6. Configuring DTE Options

Table 6-C

DTE Command Descriptions

Front Panel

Command

Description

1=DISABLED N/ A Disables all DTE command m 2=AT COMMAND SET N/A Enables AT commands from 3=V.25 SYNC N/A Enables V.25 bis (SDLC) com 4=V.25 BSC/ASYNC N / A Enables V.25 (BISYNC and A

5=V.25 SYNC (FLG) N /A Enables V.25 bis (SDLC) com

with flags

When the unit is in DTE CMD OPTION mode (idle in SW56, forced with TR option, or from escape sequence in A T mode) with A T COMMAND SET or V.25 SYNC selected, the DTE format is independent of the DATA FORMAT option. However , if V.25 BSC/ ASYNC is selected, the unit will use V.25 BISYNC (BSC) commands for synchronous data format or V.25 ASYNC commands for asynchronous data format.

40 DSU III S2W User Manual 61200.015L2-1

Transmit Clock

The TRANSMIT CLOCK option selects the source of the clock used to transfer data from the DTE into the DSU III S2W . Figur e 6-5 shows the menu path used to set the TRANSMIT CLOCK option. The default setting is NORMAL.

1=NETWORK OPT.

1=DTE RATE 2=CONNECTOR TYPE

3=DATA FORMAT 4=DTE CMD OPTION

2=DTE OPTIONS 1=NORM

5=TRANSMIT CLOCK2=EXTERN

6=CS OPTIONS

3=CONFIG 7=CD OPTIONS

8=TR OPTIONS

3=TEST OPTIONS 9=SR OPTIONS 4=DIAL OPTIONS 5=MANUAL COMMAND

Chapter 6. Configuring DTE Options

Figure 6-5

T ransmit Clock Options

T able 6-D shows the AT commands used to set the Transmit Clock option.

Table 6-D

T ransmit Clock A T Commands

Front Panel

1=NORMAL &X0 TX clock from DSU selected 2=EXTERNAL &X1 ETC clock from DTE selected

61200.015L2-1 DSU III S2W User Manual 41

Command

Description

Chapter 6. Configuring DTE Options

The EXTERNAL clock option is normally used in modem tail circuit applications. A DSU to modem interconnect diagram for this application is shown in the appendix, DSU to Modem Intercon- nect.

The EXTERNAL clock option is also recommended when the EIA-232 connector is used for 56 kbps and 64 kbps applications. A special DSU cable diagram for this application is shown in the appendix, EIA-232 Connector . Using this option and special cable eliminates data errors caused by excessive delays in the DTE transmit clock receiver and transmit data driver .

42 DSU III S2W User Manual 61200.015L2-1

CS Options

h s e

Chapter 6. Configuring DTE Options

The CS OPTIONS (clear to send) menu is used to select one of five different control modes for the CS lead. Figur e 6-6 shows the menu path used to access the CS OPTIONS menu. The default factory setting is FOLLOWS RS with CS DELA Y SHOR T .

1=NETWORK OPT.

2=DTE OPTIONS 2=CONNECTOR TYPE

3=CONFIG 2=FOLLOWS RS 2=CS DELAY LONG

3=TEST OPTIONS 7=CD OPTIONS 4=FOLOWS RS+CD 1=CS DELAY SHORT 4=DIAL OPTIONS 8=TR OPTIONS 5=OFF WITH LOCD 2=CS DELAY LONG 5=MANUAL COMMAND9=SR OPTIONS

1=DTE RATE 3=DATA FORMAT

4=DTE CMD OPTION 5=TRANSMIT CLOCK 1=FORCED ON 1=CS DELAY SH

6=CS OPTIONS 3=FOLLOWS CD

Figure 6-6

Selecting CS Options

If the option chosen involves request to send (RS), then the delay from RS to CS must be selected (CS DELA Y SHORT or CS DELAY LONG). T able 6-E shows the A T Commands used to set the CS OPTIONS.

Table 6-E

CS Options AT Commands

Front

Panel

Cmd.

Description

1=FORCED ON &R0 CS always on 2=FOLLOWS RS &R1 CS state same as RS state 3=FOLLOWS CD &R2 CS state same as CD state 4=FOLLOWS RS+CD &R3 CS state same as RS and CD

5=OFF WITH LOCD &R4 Off 5 sec after disconnect in

SW56 applications

For RS options, select the RS to CS delay lengt 1=CS DELAY SHORT _D0 Short Delay from RS to CS 2=CS DELAY LONG _D1 Long Delay from RS to CS s

61200.015L2-1 DSU III S2W User Manual 43

Chapter 6. Configuring DTE Options

Specified times for the short and long delays at the different operating speeds are shown in T able 6-F .

Rate Short Delay Long Delay

64k 1.1ms 16.1ms 56k 1.1ms 16.1ms 48k 1.1ms 16.1ms

38.4k 1.5ms 16.5ms

19.2k 1.5ms 16.5ms

4.8k 1.5ms 16.5ms

2.4k 1.5ms 16.5ms

Table 6-F

Short and Long Delays at Different Operating Speeds

44 DSU III S2W User Manual 61200.015L2-1

Chapter 6. Configuring DTE Options

CD Options

The CD OPTIONS menu is used to select one of three control modes for the receive line signal detector (CD) lead. The default factory setting is NORMAL (see Figure 6-7).

1=DTE RATE

1=NETWORK OPT. 2=CONNECTOR TYPE 2=DTE OPTIONS 3=DATA FORMAT

3=TEST OPTIONS 4=DTE CMD OPTION

3=CONFIG4=DIAL OPTIONS 5=TRANSMIT CLOCK

5=MANUAL COMMAND 6=CS OPTIONS 1=FORCED ON

7=CD OPTIONS 2=NORMAL

8=TR OPTIONS 3=OFF WITH LO 9=SR OPTIONS

T able 6-G shows the equivalent A T commands for setting CD options.

Front Panel

1=FORCED ON &C0 On all the time 2=NORMAL & C 1 On only when data present

3=OFF WITH LOCD &C2 On except after disconnect i

Command

Switched 56 application

Figure 6-7

Selecting CD Options

Table 6-G

CD Options AT Commands

Descriptions

61200.015L2-1 DSU III S2W User Manual 45

Chapter 6. Configuring DTE Options

f f

TR Options

The TR OPTIONS menu is used to select the DSU III S2W response to the data terminal ready (TR) lead. The factory default setting is IDLE WHEN OFF (see Figure 6-8).

1=DTE RATE

1=NETWORK OPT.2=CONNECTOR TYPE

2=DTE OPTIONS3=DATA FORMAT 1=IGNORED

3=CONFIG3=TEST OPTIONS 4=DTE CMD OPTION 2=LEASED LINE

4=DIAL OPTIONS 5=TRANSMIT CLOCK 3=IDLE WHEN OF 5=MANUAL 6=CS OPTIONS 4=OFF>ON DIAL #1

7=CD OPTIONS 5=OFF >ON DIAL #2

8=TR OPTIONS

9=SR OPTIONS

Selecting TR Options

T able 6-H shows the equivalent A T commands for setting TR OPTIONS.

TR Options AT Commands

Figure 6-8

Table 6-H

Front Panel

Command

Descriptions

1=IGNORE &D0 Ignore the TR input 2=LEASED LINE &D1 Virtual leased line (stored

with DTR active

3=IDLE WHEN OFF &D2 TR off will cause the DSU t

on hook (idle) and the unit

dial out. 4=OFF>ON DIAL #1 &D3 Dial Stored #1: TR goes of 5=OFF>ON DIAL #2 &D4 Dial Stored #2: TR goes of

46 DSU III S2W User Manual 61200.015L2-1

Chapter 6. Configuring DTE Options

SR Options

The SR OPTIONS menu is used to select the operating mode for the data set ready (SR) lead. Press Shift and then A to activate the SR OPTIONS sub-menu. The factory default setting is OFF TEST + IDLE (shown in Figure 6-9).

1=DTE RATE 2=CONNECTOR TYPE

1=NETWORK OPT. 3=DATA FORMAT

2=DTE OPTIONS 4=DTE CMD OPTION 1=FORCED ON

3=CONFIG3=TEST OPTIONS 5=TRANSMIT CLOCK 2=OFF IDLE ONLY

4=DIAL OPTIONS 6=CS OPTIONS 3=OFF LOCD ONLY 5=MANUAL COMMAND7=CD OPTIONS 4=OFF TEST ONLY

8=TR OPTIONS 5=OFF TEST +I 9=SR OPTIONS 6=OFF TEST +LOC

Figure 6-9

Setting SR Options

T able 6-I shows the AT commands for setting SR OPTIONS.

Table 6-I

SR Options AT Commands

Front

Panel

Command

Descriptions

1=FORCED ON &S0_C1 Always on 2=OFF IDLE ONLY &S1_C1 Off when idle (no data

connection)

3=OFF LOCD ONLY &S2_C1

Off 5 seconds after discon 4=OFF TEST ONLY &S0_C0 Off when unit in test 5=OFF TEST +IDLE &S1_C0 Off in test or idle

6=OFF TEST +LOCD &S2_C0 Off 5 seconds after discon

or test

61200.015L2-1 DSU III S2W User Manual 47

Chapter 6. Configuring DTE Options

48 DSU III S2W User Manual 61200.015L2-1

TEST OPTIONS

T E

T est Timeout

Chapter 7. Configuring T est Options

Chapter 7

Configuring T est Options

The TEST OPTIONS menu enables or disables different test modes and specifies the maximum test time allowed.

The TEST TIMEOUT option sets the length of time a DSU III S2W remains in a test mode before automatically returning to the data mode. Enter the timeout from 0 to 255 seconds. The factory

default setting is off (0). Figure 7-1 shows the menu path used to access TEST TIMEOUT .

1=NETWORK OPT. 2=DTE OPTIONS

1=TEST TIMEOUTENTER TIMEOU

3=TEST OPTIONS 2=RDL EN/DIS (0=OFF) : 00 S

3=CONFIG 3=EIA LLB EN/DIS

4=EIA RLB EN/DIS

4=DIAL OPTIONS

Figure 7-1

Setting T est T imeout Option

61200.015L2-1 DSU III S2W User Manual 49

Chapter 7. Configuring T est Options

T able 7-A shows the equivalent A T commands for setting the TEST TIMEOUT .

Front

Panel

Enter Timeout S18=x Specif

Remote Digital Loopback

The RDL (Remote Digital Loopback) option specifies whether or not the DSU III S2W responds to an RDL r equest from the far end of the circuit. The factory default setting is RDL ACCEPTED. Figure 7-2 shows the menu path used to access this option.

1=NETWORK TYPE 2=DTE OPTIONS

3=CONFIG3=TEST OPTIONS2=RDL EN/DIS 1=RDL IGNORED

4=DIAL OPTIONS 5=MANUAL

Table 7-A

T est T imeout A T Commands

Command

Description

0 - 255 seconds test

1=TEST TIMEOUT

3=EIA LLB EN/DIS 2=RDL ACCEP 4=EIA RLB EN/DIS

Figure 7-2

Remote Digital Loopback

T able 7-B shows the equivalent A T commands for setting the RDL option.

Table 7-B

Remote Digital Loopback AT Commands

Front

Panel

Command

Descriptions

1=RDL IGNORED & T 5 RDL request from remote DSU 2=RDL ACCEPTED &T 4 RDL request accepted

50 DSU III S2W User Manual 61200.015L2-1

EIA Local Loopback

The EIA LLB (Electr onics Industries Association Local Loopback) option specifies whether or not the DSU III S2W responds to the LLB input from the DTE. The factory default setting is DISABLED. Figure 7-3 shows the menu path used to access the EIA LLB option.

1=NETWORK TYPE 2=DTE OPTIONS

3=TEST OPTIONS 2=RDL EN/DIS

3=CONFIG 3=EIA LLB EN/DIS1=DISABL

4=DIAL OPTIONS 5=MANUAL COMMAND

Chapter 7. Configuring T est Options

1=TEST TIMEOUT

4=EIA RLB EN/DIS 2=ENABLED

Figure 7-3

EIA Local Loopback Options

T able 7-C shows the equivalent A T commands for setting the EIA LLB options.

Table 7-C

EIA Local Loopback AT Commands

Front Panel

Command

Descriptions

1=DISABLED _A0 EIA LLB disabled 2=ENABLED _A 1 EIA LLB enabled

61200.015L2-1 DSU III S2W User Manual 51

Chapter 7. Configuring T est Options

EIA Remote Loopback

The EIA RLB (Remote Loopback) option specifies whether or not the DSU III S2W responds to the RLB input from the DTE. The factory default setting is DISABLED. Figure 7-4 shows the menu path for the EIA RLB options.

1=NETWORK TYPE 2=DTE OPTIONS

3=TEST OPTIONS 2=RDL EN/DIS

3=CONFIG 3=EIA LLB EN/DIS 1=DISABL

4=DIAL OPTIONS 5=MANUAL COMMAND

T able 7-D shows the equivalent A T commands for setting the EIA RLB options.

Front Panel

1=DISABLED _R0 EIA RLB disabled 2=ENABLED _R1 EIA RLB enabled

1=TEST TIMEOUT

4=EIA RLB EN/DIS2=ENABLED

Figure 7-4

EIA Remote Loopback Options

EIA Remote Loopback AT Commands

Command

Descriptions

Table 7-D

52 DSU III S2W User Manual 61200.015L2-1

DIAL OPTIONS

6=RING AGAIN

Phone Number

Chapter 8. Configuring Dial Options

Chapter 8

Configuring Dial Options

The DIAL OPTIONS menu stores up to ten phone numbers and defines the AUTO ANSWER operation of the DSU III S2W when it is configured for Switched 56 operation.

The DSU III S2W stores up to ten numbers of 36 digits each. Edit a phone number by reentering the entire number . This pr ocess overwrites the previously stored number . Figure 8-1 shows the menu path used to access the PHONE NUMBERS option.

1=NETWORK TYPE 2=DTE OPTIONS 3=TEST OPTIONS

3=CONFIG 1=PHONE NUMBERS EDIT (1-10): NNNNNNN

4=DIAL OPTIONS

2=EDIT SC #

5=MANUAL COMMAND 3=EDIT AD #

4=AUTO ANSWER 5=RS366 EON

61200.015L2-1 DSU III S2W User Manual 53

STORED NUMBER TO

Figure 8-1

Editing Stored Phone Numbers

Chapter 8. Configuring Dial Options

T able 8-A shows the A T Command for storing phone numbers.

Table 8-A

AT Command for Storing Phone Numbers

Command

Description

&Zn= Store Phone Number

Edit SC#

The EDIT SC# (Edit Speed Call) option is used to program the local telco switch to support speed dialing. This option must be purchased from the telco provider . Figur e 8-2 shows the menu path for this option.

1=NETWORK TYPE 2=DTE OPTIONS 1=PHONE NUMBER 3=TEST OPTIONS

2=EDIT SC # SPEED CALL # T

3=CONFIG 3=EDIT AD # EDIT (1-10): 1

4=DIAL OPTIONS 4=AUTO ANSWER

5=RS366 EON

5=MANUAL 6=RING AGAIN

Figure 8-2

Editing Speed Call Numbers

Table 8-B

AT Command for Editing Speed Call Numbers

Command

Description

PSn= Edit Speed Call Number

54 DSU III S2W User Manual 61200.015L2-1

Edit AD#

3=CONFIG 3=EDIT AD # NNNNNNN

Chapter 8. Configuring Dial Options

The EDIT AD# (Edit Auto Dial) option is used to program a single telephone number to be auto-dialed. This option must be purchased from the telco provider .

1=NETWORK TYPE 1=PHONE NUMBER 2=DTE OPTIONS 3=TEST OPTIONS 2=EDIT SC #

4=DIAL OPTIONS4=AUTO ANSWER

5=RS366 EON

5=MANUAL 6=RING AGAIN

Figure 8-3

Editing Auto Dial Numbers

Table 8-C

AT Command for Auto Dialing

Command

Description

PA = Edit Auto Dial Number

Auto Answer

The Auto Answer option is used to specify whether incoming calls are to be automatically answered by the DSU III S2W. If AUTO ANSWER is disabled, an incoming call can be answered by an A T or V .25 command fr om the DTE, or by raising TR from the DTE. Figure 8-4 shows the menu path used to enable or disable this option. With AUTO ANSWER enabled, the call will be automatically answered even with TR off (used for remote testing). The default setting is DISABLED.

61200.015L2-1 DSU III S2W User Manual 55

Chapter 8. Configuring Dial Options

1=NETWORK TYPE 1=PHONE NUMBER 2=DTE OPTIONS 3=TEST OPTIONS 2=EDIT SC #

3=EDIT AD #

3=CONFIG4=DIAL OPTIONS 4=AUTO ANSWER 1=DISABL

5=RS366 EON 2=ENABLED

5=MANUAL COMMAND 6=RING AGAIN

Enabling/Disabling the Auto Answer Function

T able 8-D show the A T Commands available for the Auto Answer option.

AT Command for Auto Answer

Front Panel

Command

Descriptions

1=DISABLED _J0 Auto Answer disabled 2=ENABLED _ J 1 Auto Answer enabled

Figure 8-4

Table 8-D

RS366 EON

If enabled, the DSU III S2W will detect the End Of Number character from the RS-366 dial string. The default setting is ENABLED.

1=NETWORK TYPE 1=PHONE NUMBER 2=DTE OPTIONS 3=TEST OPTIONS 2=EDIT SC #

3=EDIT AD #

3=CONFIG4=DIAL OPTIONS 4=AUTO ANSWER

5=RS366 EON 1=DISABLED

5=MANUAL COMMAND 6=RING AGAIN 2=ENABLE

Figure 8-5

Selecting RS366 EON Option

56 DSU III S2W User Manual 61200.015L2-1

Chapter 8. Configuring Dial Options

Ring Again

When the RING AGAIN option is enabled, the DSU III S2W automatically redials the far end if busy . This option must be purchased from the telco provider . The factory default setting is DISABLED.

1=NETWORK TYPE 1=PHONE NUMBER 2=DTE OPTIONS 3=TEST OPTIONS 2=EDIT SC #

3=EDIT AD #

3=CONFIG4=DIAL OPTIONS 4=AUTO ANSWER

5=RS366 EON 1=DISABL

5=MANUAL COMMAND 6=RING AGAIN 2=ENABLED

Front Panel

1=DISABLED RI0 Ring again disabled 2=ENABLED RI1 Ring again enabled

Command

Figure 8-6

Selecting Ring Again Options

Table 8-E

AT Commands for Ring Again

Descriptions

61200.015L2-1 DSU III S2W User Manual 57

Chapter 8. Configuring Dial Options

58 DSU III S2W User Manual 61200.015L2-1

MANUAL COMMAND

The MANUAL COMMAND option is a shortcut method for entering configuration and control commands for the DSU III S2W.

The first display prompts the user to enter the command number .

Figure 9-1 shows the menu path for MANUAL COMMAND. The available manual commands are listed in T able 9-A.

Chapter 9. Manual Command

Chapter 9

Manual Command

COMMAND:00

1=NETWORK OPT. 2=DTE OPTIONS 3=TEST OPTIONS

3=CONFIG 4=DIAL OPTIONS

COMMAND:

5=MANUAL COMMANDCOMMAND:00VALUE:00

Figure 9-1

Manual Command

61200.015L2-1 DSU III S2W User Manual 59

Chapter 9. Manual Command

Use the number keys to enter the hexadecimal command number . Press Enter to complete. Once the command number is entered, the display shows both the command number and the present value or setting for the command. The command value can be edited or reissued with the existing value.

Use the number keys to enter the hexadecimal value. Press Enter to complete. The system briefly displays COMMAND ACCEPTED and returns to the active menu.

COMMAND: XX VALUE: 00

60 DSU III S2W User Manual 61200.015L2-1

Chapter 9. Manual Command

Table 9-A

Manual Commands

Command Description Command Value AT Command Echo Disable 82 00 Enable 82 01 AT Result code Enable 85 00 Disable 85 01 AT Long or Short code Short form 8 6 00 Long form 8 6 0 1 AT Escape Character 2 00 to FF AT CR Character 3 00 to FF AT LF Character 4 00 to FF AT BS Character 5 00 to FF AT Escape Char. Timer 0C 00 to FF Abort Call Timer 7 00 to FF DTR Recognize Delay 19 00 to FF Load Factory Opt. Option Set #1 8 A 00 Option Set #2 8 A 01 Option Set #3 8 A 02 Option Set #4 8 A 03 Store User Profile Save to Profile 0 9 1 0 0 Save to Profile 1 9 1 0 1 Select User Profile Power Up Profile 0 9 3 00 Power Up Profile 1 9 3 01

61200.015L2-1 DSU III S2W User Manual 61

Chapter 9. Manual Command

62 DSU III S2W User Manual 61200.015L2-1

DIAL OPTIONS

Dial Stored #

Chapter 10. Dial Selection

Chapter 10

Dial Selection

The DIAL selection available in the Main menu (4=Dial) includes options for manual dialing, redialing, and dialing stored numbers. Figure 10-1 shows the menu path used to access these options.

This option allows a previously stored number to be dialed. The numbers are stored within the CONFIG selection. Figure 10-2 shows the menu path used to access the Phone Numbers option.

1=DIAL STORED # Select Stored Numbe

4=DIAL

2=ENTER DIAL # 3=SPEED CALL

4=AUTO DIAL

Figure 10-1

Dial Options Menu

61200.015L2-1 DSU III S2W User Manual 63

1=NETWORK TYPE 2=DTE OPTIONS STORED NUMBER 3=TEST OPTIONS 1=PHONE NUMBERSEDIT (1-10): NNNNNNN

3=CONFIG 3=EDIT AD #

4=DIAL OPTIONS 4=AUTO ANSWER

5=MANUAL COMMAND 6=RING AGAIN

Command

DSn Dial stored number in register n

See the chapter Configuring Dial Options for more information.

Enter Dial #

This option allows you to enter a phone number of up to 36 digits for the DSU III S2W to dial.

Chapter 10. Dial Selection

2=EDIT SC #

5=RS366 EON

Figure 10-2

Path to Storing Numbers

Table 10-A

AT Command for Dialing Stor ed Numbers

Description

1=DIAL STORED #

4=DIAL

2=ENTER DIAL #NNNNNNN

3=SPEED CALL 4=AUTO DIAL

Figure 10-3

Entering Dial Number

64 DSU III S2W User Manual 61200.015L2-1

Speed Call

This option allows you to select a telco register number that was previously programmed. See the chapter Configuring Dial Options for information on programming speed call numbers.

4=DIAL

Command

Dn Dial number

1=DIAL STORED # 2=ENTER DIAL #

3=SPEED CALL 1-10: N

4=AUTO DIAL

Chapter 10. Dial Selection

Table 10-B

AT Command for Dialing a Number

Description

SPEED CALL #

Figure 10-4

Path to Speed Calling

Table 10-C

AT Command for Speed Calling

Command

Description

SCn Dial speed call register number

61200.015L2-1 DSU III S2W User Manual 65

Auto Dial

Chapter 10. Dial Selection

This option allows you to select a previously programmed number from the telco. See the chapter Configuring Dial Options for information on programming auto dial numbers.

1=DIAL STORED # 2=ENTER DIAL #

4=DIAL 3=SPEED CALL

4=AUTODIAL

Figure 10-5

Path to Auto Dialing

Table 10-D

AT Command for Auto Dialing

Command

Description

AD Dial auto dial number

66 DSU III S2W User Manual 61200.015L2-1

TEST OVERVIEW

Chapter 11. T esting and Troubleshooting

Chapter 11

T esting and Troubleshooting

The DSU III S2W performs a variety of diagnostic functions that isolate portions of the circuit to identify the problem source. Tests may be initiated and terminated from the front panel or the DTE interface. In asynchronous mode, A T commands can contr ol the testing from the DTE interface. For synchronous operation, V.25 bis commands can provide test control.

DTE DTE

LOCAL

DSU/CSU

TELCO

REMOTE

DSU/CSU

Figure 11-1

Normal Operation Before Initiating Loopback Test

All diagnostic tests disrupt data flow.

61200.015L2-1 DSU III S2W User Manual 67

Chapter 11. T esting and Troubleshooting

) )

Initiating a T est

Initiate tests using the following procedure:

1. Select Test from the Main menu by pr essing 2, then press Enter.

2. Specify local or remote testing by selecting the corresponding number , followed by Enter.

3. Use the Up and Down Arrows to view test options.

4. Select a test from the available options by pressing the corresponding number , followed by Enter.

The example in Figure 1 1-2 shows the menu path for initiating a local DTE and Loop test.

1=LOCAL UNIT 2=LOOP ONLY (RT

2=TEST 2=REMOTE UNIT 5=TEST PATTERN

1=DTE & LOOP(LL

3=DTE ONLY 4=DTE WITH TP

6=SELF TEST

Figure 11-2

Initiating a T est

Once a test is initiated Please W ait is displayed briefly followed by the Status screen.

68 DSU III S2W User Manual 61200.015L2-1

T est Status Display

The T est Status display appears automatically during a test. The T est Status display is similar to the status screen described in the chapter Status Selection, with additional prompts for the type of test and the number of errors (for tests with a test pattern).

Figure 1 1-3 shows an example of a T est Status Display for a test with a test pattern.

Chapter 11. T esting and Troubleshooting

While this menu is on the display: Press 1 to clear errors. Press 2 to inject an error.

TEST PATTERN

TST ERR = 0000

Exiting a T est

LOOP 56K

DTE 56K SYNC

Use the Up and Down arrows to display other status screens.

TR SR LLB RLB

OFF OFF OFF OFF

UNIT IN TEST

LOOP IS NORMAL

Figure 11-3

Sample T est Status Displays

During a test, press Quick to access the Exit T est/Display Status menu or press Cancel to return to the Main menu. The Exit Test/ Display Status menu provides the following options, which are available only after a test has been initiated:

Exit Test exits the current test and returns to the Main menu Display Status reenters test display

61200.015L2-1 DSU III S2W User Manual 69

Chapter 11. T esting and Troubleshooting

1=DTE & LOOP(LL)

2=LOOP ONLY (RT)

3=DTE ONLY

1=LOCAL UNIT 1=EXIT TEST

4=DTE WITH TP 1=2047 PATTERN

5=TEST PATTERN 1=2047 PATTERN

2=TEST 2=511 PATTERN

6=SELF TEST

1=2047 PATTERN 1=EXIT TEST

2=REMOTE UNIT 2=511 PATTERN

3=DATA FROM DTE

STATUS DISPLAY

2=511 PATTERN

STATUS DISPLAY

1=EXIT TEST 2=DISPLAY STATUS

STATUS DISPLAY

2=DISPLAY STATUS

Complete T est Menu

2=DISPLAY STA

1=EXIT TEST 2=DISPLAY STA

Figure 11-4

70 DSU III S2W User Manual 61200.015L2-1

TROUBLESHOOTING

This section is intended to provide a quick and easy means of diagnosing suspected problems associated with local or remotely attached ADTRAN DSU/CSUs.

Messages from the DSU/CSU

The DSU III S2W displays messages on the LCD display and LEDs concerning the status of the unit and the local loop. If the Alarm LED is on, one or more of the messages shown in T able 1 1-A is displayed on the LCD.

The Status menu must be selected in order for the unit to display status messages. Pressing Quick returns to the Main menu where ST A TUS can be selected.

Chapter 11. T esting and Troubleshooting

61200.015L2-1 DSU III S2W User Manual 71

Chapter 11. T esting and Troubleshooting

h t d

Messages from the DSU/CSU

Message Meaning Probable Cause Action

LOOP IS NORMAL

LOSS OF TCM SYNC

CO TEST

WAITING FOR PTS

RATE NEGOTIATION

INCOMING CALL

Good local loop sign being received from telco. Unit not receiving a from the telco.

Telco activated a loopback to test the circuit.

Acknowledgement si was not received fro network when dialin

Unit is attempting to adapt to the far end

DSU is attempting to answer an incoming but is unable to.

Good local loop. No action required;

Bad telco cable from DSU to telco jack or circuit to telco.

Telco is testing circuit.Wait until test is co

Message for longer t 5 seconds indicates switch not configure properly at CO.

Message for longer t 30 seconds indicate switch not configure properly at CO. Auto Answer is disabled.Enable Auto Answer

Table 11-A

properly connected t telco circuit. Replace telco cable DSU to wall jack. If problem persists, c telco provider.

or contact telco ser provider.

Contact telco provid

Dial menu option (se chapter Configuring Options).

72 DSU III S2W User Manual 61200.015L2-1

Troubleshooting New Installs

Before initiating diagnostics on a newly installed unit and before contacting ADTRAN T echnical Support, please check the items in T able 1 1-B to ensure the unit is configured pr operly .

After verifying the items listed in T able 1 1-B the unit should operate properly and display the following:

IDLE LOOP IS NORMAL

If a status message other than IDLE LOOP IS NORMAL is shown, begin performing diagnostics described in the section T est Sequence

for T roubleshooting New Installs or Existing Cir cuits.

Configuration Item to Check

DTE Type EIA-232 or V.35

Data Format Async or Sync DTE Cable N / A Telco Cable N/ A

Power the unit Off and then On.

Option Selection Action

N/A

Chapter 11. T esting and Troubleshooting

Table 11-B

T roubleshooting New Installs

Select the type of DTE interface optio connect to the DSU/CSU from the Configuration menu.

Select the type of data to be used fro Configuration menu.

Verify DTE cable connection to the pro connector on the DSU/CSU.

Verify the telco cable is securely con the DSU/CSU and wall jack.

Verify the unit passes self test during (displayed on the LCD).

61200.015L2-1 DSU III S2W User Manual 73

Chapter 11. T esting and Troubleshooting

T est Sequence for Troubleshooting New Installs or Existing Circuits

If your DSU .... Do this...

is suspected of having Perform a Self T est to determine problems the unit is in good health.

is receiving excessive errors Perform a DTE with T est Pattern requiring retransmission to determine if the unit's internal of data transmitter and receiver is

operating error free.

is receiving excessive Perform a Remote Test to errors requiring verify the connection between the retransmission of data local and remote unit is error

free. Run the test using all available test patterns.

A call must first be established before performing any r emote diagnostics.

If an external BERT (Bit Error Rate Tester) is available, these additional tests may be performed:

• DTE & Loop Test

• DTE Only Test

• Loop Only Test

If the unit fails any of these tests or the problem has not been determined, contact ADTRAN T echnical Support; see inside back cover .

74 DSU III S2W User Manual 61200.015L2-1

LOCAL UNIT DIAGNOSTICS

t s

The local DSU III S2W can perform six different tests; see Table 11-C.

Chapter 11. T esting and Troubleshooting

Table 11-C

T est A T Commands

Front

Panel Display

Command

Description

DTE & Loop (LL) &T10 TD/RD and RX/TX Loopbacks Loop Only (RT) &T11 RX/TX Loopback at Network In DTE Only &T1 TX/RX Loopback at DTE Interfa DTE with TP & T8 RX/RX Loopback with Test Pat Test Pattern &T9 Transmit/Receive Test Pattern Self Test Z Check Internal Components (Re Exit Test & T0 Stops test, returns to data mod

TD = Customer Transmit Data RD = Customer Receive Data TX = Network Transmit Data RX = Network Receive Data

The test patterns shown in T able 1 1-D are available for the DTE with T est Pattern and T est Pattern tests.

Table 11-D

DTE With T est Pattern Commands

Front Panel

Command

Description

1=2047 PATTERN _T0&T8 Standard 2047 random data p 2=511 PATTERN _T1&T8 Standard 511 random data p

61200.015L2-1 DSU III S2W User Manual 75

Chapter 11. T esting and Troubleshooting

DTE & Loop (LL)

T est Description

The DTE & Loop test splits the DSU III S2W into two separate DTE and loop interface sections and then loops the receive data of each interface back to its respective transmit data. The DTE & Loop test provides a bidirectional loopback at the DSU/CSU. Figure 1 1-5 illustrates the loopback points and the signal paths for this test.

DTE

LOCAL

DSU/CSU

Test Purpose

TELCO

DTE Loopback Local 4-wire Loopback

The DTE & Loop test is used for the following purposes:

• Verify integrity of the DTE interface and cable.

• Provide a loopback for network tests.

Figure 11-5

DTE & Loop Test

76 DSU III S2W User Manual 61200.015L2-1

Initiating

L T

Follow the menu path outlined in Figure 1 1-6 to initiate a DTE & Loop T est.

1=LOCAL UNIT 3=DTE ONLY

2=TEST 2=REMOTE UNIT 5=TEST PATTER

Interpreting T est Results

A BER T tester must be used to interpret the test r esults of a DTE & Loop test.

Chapter 11. T esting and Troubleshooting

1=DTE & LOOP(L 2=LOOP ONLY (R

4=DTE WITH TP

6=SELF TEST

Figure 11-6

Initiating a DTE & Loop Test

61200.015L2-1 DSU III S2W User Manual 77

Chapter 11. T esting and Troubleshooting

L T

Loop Only (RT)

The Loop Only (RT) test allows the loop interface and a major portion of the DTE interface for the local DSU III S2W to be tested from the remote site over the actual communication circuit. Figur e 11-7 illustrates the loopback point and the signal paths for this test.

LOCAL

DSU/CSU

Interface

Test Purpose

Initiating

2=TEST 4=DTE WITH TP

DTE

TELCO

Local 4-wire Loopback

Figure 11-7

Loop Only T est

The Loop Only test is used to provide a loopback for network tests.

Follow the menu path outlined in Figure 1 1-8 to initiate a Loop Only test.

1=DTE & LOOP(L 2=LOOP ONLY (R

1=LOCAL UNIT 3=DTE ONLY

2=REMOTE UNIT 5=TEST PATTERN

6=SELF TEST

Figure 11-8

Initiating a Loop Only T est

78 DSU III S2W User Manual 61200.015L2-1

Interpreting T est Results

The Loop Only test is used to loop the circuit back to the telco. No test results are available from the local DSU III S2W.

Chapter 11. T esting and Troubleshooting

61200.015L2-1 DSU III S2W User Manual 79

Chapter 11. T esting and Troubleshooting

DTE Only

The DTE Only test provides a method for testing both the DTE interface drivers and receivers of the local DSU III S2W plus its loop transmitter and receiver . For this test, the loop transmit data is connected to the loop receive data at a point close to the physical network interface. This test can be used to verify proper operation between the local DTE and the local DSU III S2W .

When this test is implemented, the far unit receives an OOS/OOF message from the network and enters an alarm state.

DTE

LOCAL

DSU/CSU

Figure 11-9

DTE Only T est Diagram

80 DSU III S2W User Manual 61200.015L2-1

T est Purpose

Initiating

Chapter 11. T esting and Troubleshooting

The DTE Only test is used for the following purposes:

• Verify integrity of the DTE interface.

• Verify integrity of connection between DTE and DSU III S2W.

Follow the menu path outlined in Figure 1 1-10 to initiate a DTE Only test.

1=DTE & LOOP( 2=LOOP ONLY (

1=LOCAL UNIT 3=DTE ONLY

2=TEST 4=DTE WITH TP

2=REMOTE UNIT 5=TEST PATTER

6=SELF TEST

Figure 11-10

Initiating a DTE Only T est

Interpreting T est Results

A BER T tester must be used to interpret the test results of a DTE Only test.

61200.015L2-1 DSU III S2W User Manual 81

Chapter 11. T esting and Troubleshooting

DTE With T est Pattern

The DTE with TP (test pattern) test is similar to the DTE Only test described previously except the test pattern is generated using the DSU/CSU internal test pattern generator . This test can be used to detect deficiencies within the internal drivers and receivers of the DSU III S2W . Figure 1 1-11 illustrates the loopback point and the data paths for this test.

DTE

Error

Inject

LOCAL

DSU/CSU

Test Pattern

Generator

Test Purpose

Initiating

Error

Clear

Test Pattern

Detector

Figure 11-11

DTE with T est Pattern

A DTE test using a test pattern is used for the following purposes:

• Verify integrity of the DTE interface.

• V erify integrity of connection between DTE and DSU III S2W.

Follow the menu path outlined in Figure 1 1-12 to initiate a DTE T est using a T est Pattern.

82 DSU III S2W User Manual 61200.015L2-1

Chapter 11. T esting and Troubleshooting

# # # #

1=DTE & LOOP(LL) 1=2047 PATTERN 2=LOOP ONLY (RT) 2=511 PATTERN 3=DTE ONLY 3=STRESS PTRN 4=DTE WITH TP 4=STRESS PTRN

1=LOCAL UNIT 5=TEST PATTERN 5=STRESS PTRN

2=TEST 6=SELF TEST 6=STRESS PTRN

2=REMOTE UNIT

Figure 11-12

Initiating a DTE T est with Test Pattern

Interpreting T est Results

The DSU III S2W displays:

DTE WITH TP TST ERR=XX

The first line of the display indicates the type of test being performed while the second line of the display indicates the number of errors accumulated by the test pattern detector .

If errors occur during this test, the test error count can be reset to zero by pressing 1. T o verify pr oper operation of this test, single bit errors can be injected into the transmitted test pattern by pressing

2. These errors appear on the TST ERR display.

61200.015L2-1 DSU III S2W User Manual 83

Chapter 11. T esting and Troubleshooting

T est Pattern

The T est Pattern option converts the local DSU III S2W into a BERT tester for the purpose of testing the circuit. When this test is used, the remote DSU/CSU must be in loopback or transmitting a test pattern. Figure 1 1-13 illustrates the data paths for this mode.

LOCAL

DSU/CSU

Error Inject

Error Clear

Test Purpose

Test Pattern

Generator

Test Pattern

Detector

REMOTE

DSU/CSU

Error

Inject

TELCO

Error

Clear

T esting using a test pattern is used for the following purposes:

• Transmits user-selected test pattern using an internal test pattern generator , and compares the received data using an internal test pattern detector to detect if there are any errors on the cir cuit

Test Pattern

Generator

Test Pattern

Detector

Figure 11-13

T est Pattern Only

84 DSU III S2W User Manual 61200.015L2-1

Chapter 11. T esting and Troubleshooting

• Injects errors and verifies the unit transmits data across the communication circuit to the remote unit.

• Helps determine from which direction the circuit is receiving errors.

Initiating

Follow the menu path outlined in Figure 1 1-14 to initiate a test using a test pattern.

1=DTE & LOOP(LL) 2=LOOP ONLY (RT)

1=LOCAL UNIT 3=DTE ONLY

2=TEST 4=DTE WITH TP 1=2047 PATTERN

2=REMOTE UNIT 5=TEST PATTERN 2=511 PATTERN

6=SELF TEST

Figure 11-14

Initiating a T est Using a Test Pattern

Interpreting T est Results

The display should show the following:

TST ERR = 0000

61200.015L2-1 DSU III S2W User Manual 85

ADTRAN DSU III S2W User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual