SPORTSTER 14,400 1 Introduction INTRODUCTION Congratulations! The Sportster 14,400 modem you've purchased represents powerful, advanced design. It offers ex ceptional reliability, compatibility and flexibility at all standard rates up to 14.4K bits per second (bps). Whether you're a seasoned modem user or have just purchased your first modem, we're sure it will give you excellent service. Once you've connected your new Sportster 14,400 to your telephone line, you'll be able to use your computer in exciting new ways. Some of the possibilities are shown in the figure below. Data Communications Options HOW TO USE THIS MANUAL This manual is divided into two parts. The first part is designed to aid you in getting your modem connected and operating as quickly as possible and to explain all its functions. The second part contains summaries and other reference information. As you use the manual, keep the following guidelines in mind. ù The modem is shipped ready for most dial-up applications except for its flow control setting, which depends on the type of communications software and machine you're using. After you've set up the modem and tested its operation (Chapter 2), review the instructions in Chapter 3, Quick Start, for brief configuration guidelines. ù Sportster 14,400 modems connect automatically with remote modems operating at 14.4K, 12K, 9600, 7200, 4800, 2400, 1200 or 300 bps, as long as the remote modems observe the standards listed under Compatibility in Chapter 1. Below is a brief description of the manual's contents. ù Chapter 1_Operating and compatibility features ù Chapter 2_Installation and testing ù Chapter 3_Quick-start instructions ù Chapter 4_Modem settings for the computer and phone line interfaces ù Chapter 5_Internal modem operational settings ù Chapter 6_Dialing, answering and disconnecting ù Chapter 7_Queries and Help commands to display current settings, operational summaries, and other data The Appendixes in Part II cover the following subjects. ù Background information on error control, throughput and flow control ù Summaries and tables ù An alphabetical command summary ù Problems, their causes and solutions ù Fax and other operational information ù Procedures for modem testing ù Glossary ù Warranty/Service/Certification information USRobotics, the USRobotics logo, Sportster, Sportster 14,400 V.32 bis with V.42 bis, and Sportster 14,400 Fax V.32 bis with V.42 bis are registered trademarks of U.S. Robotics, Inc. CompuServe is a registered service mark of Compu Serve Inc. IBM, IBM PC, PC/XT, and PC/AT are trademarks of International Business Machines Corp. Microcom Networking Protocol (MNP) is a registered trademark of Microcom, Inc. Prodigy is a registered service mark and trademark of Prodigy Services Company, a partnership of IBM and Sears. Touch-Tone is a trademark of American Telephone and Telegraph. TABLE OF CONTENTS Introduction ii How to Use this Manual ii Table of Contents v PART I. INSTALLATION AND OPERATION CHAPTER 1_Features and Compatibility Modem Features 1-1 Compatibility 1-3 CHAPTER 2_Set-Up and Testing Package Components 2-1 Requirements_Communications Software 2-2 RS-232 Requirements 2-2 Hardware Features 2-3 Power Switch 2-3 Volume Control Switch 2-3 Front Panel Indicators 2-3 DIP Switches 2-4 Installing the Modem 2-4 Testing the Installation 2-6 Troubleshooting 2-8 CHAPTER 3_Quick Start Basic Operating Requirements 3-1 Software Parameters 3-1 Modem Parameters 3-2 Setting Modem Parameters 3-2 Rate Shifting 3-3 Phone Line Interface 3-3 Serial Port Interface 3-3 Recommended Settings 3-4 Software Settings 3-4 Modem Settings 3-5 Alternative Settings 3-6 Data Format 3-8 Storing Defaults in Nonvolatile Memory 3-9 Dialing 3-10 CHAPTER 4_Interface Controls Terminology 4-1 Modem Interfaces 4-1 Changing Settings 4-2 Throughput Guidelines 4-2 CCITT/Bell Settings (Bn) 4-4 Error Control (&Mn) 4-4 Auto Answer with Error Control4-5 Online Fallback and Fall Forward4-5 Flow Control Overview 4-6 Transmit Data Buffer Sizes 4-6 Received Data Buffer Size 4-6 Hardware/Software Flow Control Options 4-6 Warning on Software Flow Control4-7 Transmit Data Flow Control (&Hn)4-8 When it is Required 4-8 Received Data Flow Control 4-9 Hardware Control (&Rn) 4-10 Software Control (&In) 4-10 Data Compression (&Kn) 4-11 Data Rate Commands 4-12 Software Requirements 4-13 Serial Port Rate Select (&Bn)4-13 Connection Rate Select (&Nn)4-14 Data Set Ready (&Sn) 4-15 Break Handling (&Yn) 4-15 CHAPTER 5_Internal Controls Setting/Using Defaults 5-1 Writing Defaults to NVRAM (&W)5-1 Loading the Factory Defaults (&F) 5-2 Reset (Z) 5-3 Storing a Phone Number (&Zs) 5-3 Result Codes 5-4 Response Modes (Vn) 5-4 Quiet Mode (Qn) 5-5 Result Code Options (Xn) 5-5 Additional Result Code Options (&An) 5-8 Local Echo 5-9 Command Mode Local Echo (En) 5-9 Online Local Echo (Fn) 5-10 The Audio Monitor 5-10 Speaker Control (Mn) 5-11 S-Registers 5-11 CHAPTER 6_Dialing and Answering Before Connecting 6-1 Modulation/Standards 6-1 Setting the Transmission Rate6-1 Data Format 6-2 Error Control 6-3 Placing Calls 6-3 Dial (D) 6-3 Cancel Dialing 6-4 Dial Command Options 6-4 Dialing Type, Pulse or Tone 6-4 Adaptive Dialing (X2OX4) 6-5 Pause (,) 6-5 Slash (/) 6-5 Wait for Another Dial Tone (W)6-5 Dial and Return to Command Mode (;) 6-6 Dialing Letters (") 6-6 Transferring Calls (!) 6-6 Wait for an Answer (@) 6-7 Reversing Originate/Answer Frequencies (R) 6-7 Dialing the Stored Number (DS)6-8 Redialing (A/) 6-8 Escape Code Operations (+++) 6-8 Modem Response to +++ 6-9 Hanging Up (Hn) 6-9 Returning Online (On) 6-9 Automatic Answering 6-10 Suppressing Auto Answer 6-11 Manual Answer 6-11 Points to Remember 6-11 International Calls 6-12 CCITT/Bell Answer Sequence (Bn)6-12 Guard Tone (&Gn) 6-12 Pulse Dial Make/Break Ratio (&Pn) 6- 12 CCITT V.21_300 bps 6-13 CCITT V.23_1200/75 bps 6-13 Chapter 7_Queries and Help Screens User Inquiries (In) 7-1 S-Register Query (Sr?) 7-3 Stored Phone Number Query (&Z?)7-3 Help Screens 7-3 Stop/Restart Display 7-3 Cancel Display 7-4 Basic Command Set ($) 7-4 Ampersand Command Set (&$) 7-4 Dialing (D$) 7-5 S-Register Functions (S$) 7-6 PART II. REFERENCE Appendix A_Error/Flow Control Concepts Error Control and Throughput Overview A-1 CCITT V.42 Handshaking A-1 MNP Handshaking A-2 Data Compression A-2 Flow Control A-3 Throughput Guidelines A-3 Online Fallback/Fall Forward A-5 Achievable Throughput StatisticsA-6 Appendix B_Summaries and Tables Front Panel Indicators B-1 The RS-232 Interface B-2 DIP Switch Summary B-4 Default Settings B-6 S-Register Summary B-9 ASCII Chart B-17 Appendix C_Alphabetical Command Summary Appendix D_Problems and Solutions Before the Modems Connect D-1 During Data Transfer D-3 If You Still Have Problems D-4 Appendix E_Fax and Other Operations Fax Operations E-1 High Speed/Low Speed Protocol E-2 Voice/Data Communications E-5 Appendix F_Modem Testing Testing with &T F-1 Dial Test_S16=2 F-8 Appendix G_Glossary Appendix H_Warranty/Service/Certification Index