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COURIER HIGH SPEED MODEMS HOW TO USE THIS MANUAL This manual contains operating instructions for Courier V.32 bis, Courier HST, and Courier HST Dual Standard modems. These modems have identical features except for the signaling they use to connect with remote modems at high speeds: V.32/V.32 bis or HST. Courier HST Dual Standard modems use either type of signaling, de- pending on the type of remote modem. As you use the manual, keep the following guidelines in mind. ∙ The modem is shipped ready for most dial-up applications except for its flow control setting, which depends on the type of software and machine you're using. After you've set up the modem and tested its operation (Chapter 2) review the Quick-Start 1 instructions in Chapter 3 for brief configuration guidelines. ∙ If you've purchased a Courier V.32 bis modem, disregard the instructions in this manual concerning HST operations. Conversely, if you've purchased a Courier HST modem, disregard the instructions concerning V.32/V.32 bis operations. ∙ All Courier high speed modems connect automatically with remote modems operating at 14.4K/12K/9600/ 7200/4800/2400/1200/300/110 bps, as long as the remote modems observe the standards listed under Compatibility in Chapter 1. ii How to Use This Manual COURIER HIGH SPEED MODEMS 2 A NOTE ON COMMUNICATIONS SOFTWARE If you're using a computer rather than a terminal, you need communications software. Many brands are available, all of which are based on the modem's AT command set. Some users prefer their communications software to take control of the modem, and are more comfortable with a program that makes the modem almost transparent. Others prefer a program that allows them to use the modem's AT command set some- times, and their software at other times, depending on the task at hand. Whichever you prefer, review at least the Quick Start (Chapter 3) so that you have a basic understanding of the modem's requirements and operation. 3 How to Use This Manual iii COURIER HIGH SPEED MODEMS USER PATHS The paths shown in the diagram are suggestions only, designed for new and 4 experienced users. Note that there is no separate path for HST-mode or V.32 bis-mode operation. Most users will be making asynchronous calls. If you'll be making synchronous calls to a mainframe, you'll find all essential information in Chapter 7. However, you may find it helpful to review the more detailed operating instructions in other chapters as well. 5 iv How to Use This Manual 6 7 The USRobotics logo and HST are registered trademarks of U.S. Robotics, Inc. Courier HST, Courier HST Dual Standard, Courier V.32 bis, Total Control, and Adaptive Speed Leveling (ASL) are trademarks of U.S. Robotics, Inc. Apple is a registered trademark of Apple Computer, Inc. Hewlett Packard 3000 is a trademark of Hewlett Packard Company. IBM PC, PC/XT, PC/AT and Systems Network Architecture (SNA) are trademarks of International Business Machines Corp. Microcom Networking Protocol (MNP) is a trademark of Microcom, Inc. Touch-Tone is a trademark of American Telephone and Telegraph. COURIER HIGH SPEED MODEMS TABLE OF CONTENTS 8 How to Use this Manual ii Table of Contents v Limited Warranty x FCC Registration Numbers xi Connecting to the Telephone Companyxi DOC (Canada) xi Radio and Television Interferencexii For Canadian Modem Users xiii PART I. INSTALLATION AND OPERATION CHAPTER 1ΩFeatures and Compatibility Introduction 1-1 Compatibility 1-4 CHAPTER 2ΩSet-Up and Testing Package Components 2-1 Operational Requirements 2-1 RS-232 Requirements 2-2 Front Panel Switches 2-3 Front Panel Indicators 2-4 Installing the Modem 2-4 Testing the Installation 2-7 CHAPTER 3ΩQuick Start: Asynchronous Calls 9 Asynchronous/Synchronous Communication 3 -1 Initial Modem Settings 3-1 Recommended Settings 3-2 Alternative Settings 3-3 Data Format 3-4 Storing Defaults in Nonvolatile Memory 3 -5 Dialing 3-5 Link Rate Negotiation 3-5 Online Fallback 3-6 CHAPTER 4ΩInterface Controls Terminology 4-1 Table of Contents v COURIER HIGH SPEED MODEMS Changing Settings 4-2 High Speed Modulation: HST/V.32 bis 4 -2 Modulation at 2400 bps and Below4-3 Throughput Guidelines 4-3 Error Control 4-5 10 With Auto Answer 4-6 Flow Control Overview 4-6 Transmit Data Buffer Sizes 4-6 Received Data Buffer Size 4-6 Transmit Data Flow Control (&Hn)4-7 When it is Required 4-7 Hardware Control 4-7 Software Control 4-7 Guidelines 4-8 Received Data Flow Control 4-9 Hardware Control (Rn) 4-9 Software Control (&In) 4-9 Guidelines 4-11 Data Compression (&Kn) 4-12 Data Rate Commands 4-13 Software Requirements 4-13 DTE Rate Select (&Bn) 4-14 Link Rate Select (&Nn) 4-15 Guidelines for Low Speed Calls4-16 Data Set Ready (&Sn) 4-16 Data Terminal Ready (&Dn) 4-17 Carrier Detect (&Cn) 4-17 Rack Controller Unit Access (%Rn)4-18 Touch-Tone Recognition (%Tn) 4-18 CHAPTER 5ΩInternal Controls Setting/Using Defaults 5-1 11 Writing Defaults to NVRAM (&W)5-1 Loading the Factory Defaults (&F) 5 -2 Reset (Z) 5-3 Storing Telephone Numbers (&Zn=s) 5 -3 Result Codes 5-4 Response Modes (Vn) 5-4 Quiet Mode (Qn) 5-5 vi Table of Contents COURIER HIGH SPEED MODEMS Additional Result Code Subsets (&An) 5 -5 Result Code Sets (Xn) 5-6 Local Echo 5-9 Command Mode Local Echo (En) 5-9 Online Local Echo (Fn) 5-9 The Audio Monitor 5-10 Speaker Control (Mn) 5-10 Modem Clock Usage (Kn) 5-11 12 13 Table of Contents vii COURIER HIGH SPEED MODEMS Transmitter Enable/Disable (Cn)5-11 Break Handling (&Yn) 5-11 S-Registers 5-12 CHAPTER 6ΩAsynchronous Dialing and Answering Before Connecting 6-1 Modulation/Standards 6-1 Setting the Transmission Rate6-2 Data Format 6-2 Error Control 6-2 Placing Calls 6-3 Dial (D) 6-3 Cancel Dialing 6-3 14 Dialing Type, Pulse or Tone 6-4 Adaptive Dialing (X2-X7) 6-4 Pause (,) 6-4 Slash (/) 6-5 Wait for Another Dial Tone (W)6-5 Dial and Return to Command Mode (;) 6 -5 Dialing Letters (") 6-5 Transferring Calls (!) 6-6 Wait for an Answer (@) 6-6 Reversing Originate/Answer Frequencies (R) 6-7 Dialing a Stored Number (DSn)6-7 Redialing 6-7 Dial the Last Dialed Number (DL)6-8 Re-execute the Last Command (A/)6-8 Automated Redialing (>, A>) 6-8 Continuous Repeat (>) 6-9 Continuous Re-Execute (A>) 6-9 Exiting Repeat Mode 6-9 Escape Code Operations (+++) 6-9 Modem Response to +++ 6-10 Returning Online (O) 6-11 Hanging Up (Hn) 6-11 Automatic Answering 6-11 Suppressing Auto Answer 6-12 Points to Remember 6-12 15 International Calls 6-12 Handshaking Options (Bn) 6-12 viii Table of Contents COURIER HIGH SPEED MODEMS Guard Tone (&Gn) 6-13 Pulse Dial Make/Break Ratio (&Pn) 6 -13 16 Table of Contents ix 17 COURIER HIGH SPEED MODEMS Chapter 7ΩSynchronous Operations Overview 7-1 Data Rate Synchronization 7-1 Protocol Compatibility 7-1 Requirements 7-1 What You Need to Know 7-2 The RS-232 Interface 7-2 The Synchronous Adapter Card 7-2 Setting the Modem 7-3 Modulation/Link Rate Guidelines7-3 Flow Control Guidelines 7-4 Transmit Clock Source (Xn) 7-4 Synchronous Mode (&M1) 7-5 Dialing Out 7-5 Answering 7-5 Hanging Up 7-6 Additional Terminology 7-6 Chapter 8ΩQueries and Help Screens User Inquiries (In) 8-1 S-Register Query (Sr?) 8-6 Phone Number Query (&Zn?) 8-6 18 Last-Dialed Number Inquiry (&ZL?)8-6 Help Screens 8-6 Stop/Restart Display 8-6 Cancel Display 8-6 Basic Command Set ($) 8-7 Extended Command Set (&$) 8-7 Dialing (D$) 8-8 S-Register Functions (S$) 8-9 PART II. REFERENCE Appendix AΩLink Negotiation (Handshaking) and Error Control Link Negotiation (Handshaking) A-1 HST Mode A-1 V.32 bis Mode A-3 Dual Standard Handshaking A-5 Error Control and Throughput A-5 CCITT V.42 Handshaking A-6 MNP Handshaking A-6 Data Compression A-6 x Table of Contents COURIER HIGH SPEED MODEMS 19 Flow Control A-7 Throughput Guidelines A-7 Achievable Throughput A-9 Appendix BΩSummaries and Tables The RS-232 Interface B-2 Front Panel Indicators B-4 DIP Switch Summary B-6 Default Settings B-9 S-Register Summary B-12 ASCII Chart B-21 Appendix CΩAlphabetical Command Summary Basic Command Set C-1 Extended Command Set C-6 Percent Command Set C-11 Appendix DΩProblems and SolutionsD-1 If You Still Have Problems D-4 Appendix EΩAdditional Operations Voice/Data E-2 High Speed/Low Speed Protocol E-5 Dedicated Line and Leased Line Operation E-8 Hewlett Packard 3000 InstallationsE-11 20 MI/MIC Operations E-12 Appendix FΩModem Testing Testing with &T F-1 Ending a TestΩ&T0, S18 F-1 Analog LoopbackΩ&T1, &T8 F-2 &T2 F-4 Digital LoopbackΩ&T3 F-4 &T4, &T5 F-5 Remote Digital LoopbackΩ&T6, &T7F-5 Testing with Register S16 F-8 Analog LoopbackΩS16=1D F-8 Dial TestΩS16=2 F-9 Test PatternΩS16=4 F-9 Remote Digital LoopbackΩS16=8F-10 Appendix GΩGlossary G-1 Table of Contents xi COURIER HIGH SPEED MODEMS Appendix HΩTechnical SpecificationsH-1 21 Index 22 xii Table of Contents COURIER HIGH SPEED MODEMS LIMITED WARRANTY U.S. Robotics, Inc., warrants to the original consumer or other end user purchaser that this product is free from defects in materials or workmanship for a period of two years from the date of 23 purchase. During the warranty period, and upon proof of purchase, the product will be repaired or replaced (with the same or similar model) at our option, without charge for either parts or labor. This warranty shall not apply if the product is modified, tampered with, misused, or subjected to abnormal working conditions. REPAIR OR REPLACEMENT AS PROVIDED UNDER THIS WARRANTY IS THE EXCLUSIVE REMEDY OF THE PURCHASER. THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE OR PURPOSE, AND U.S. ROBOTICS SHALL IN NO EVENT BE LIABLE TO PURCHASER FOR INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND OR CHARACTER. Some states do not allow the exclusion or limitation of incidental or consequential damages or allow limitations on how long an implied 24 warranty lasts, so the above limitations or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. To obtain service under this warranty, contact the U.S. Robotics Technical Support Department at 800/982-5151 or by x Warranty COURIER HIGH SPEED MODEMS mail at 8100 North McCormick Blvd., Skokie, Illinois, 60076-2920. You will be given a Return Materials Authorization (RMA) number to help us keep track of your warranty request. Once you have received your RMA number, take or mail the product, postage prepaid, to U.S. Robotics at the above address. Include proof of the date of purchase. IMPORTANT: If you ship your unit, pack it securely, be sure your RMA 25 number is visible on the outside of the package, and ship it charges prepaid and insured. Should you encounter problems in operating this device, follow the instructions in Appendix D in Part II of this manual. The Appendix contains solutions to operating problems as well as procedures to follow if there is an apparent modem malfunction. 26 Warranty page COURIER HIGH SPEED MODEMS FCC REGISTRATION FCC68: CJE794-72748-MD-E RINGER EQUIVALENCE: 0.4B FCC15: CJE-0129 DOC (CANADA) This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the radio interference regulations of the Canadian Department of Communications. 27 Le present appareil numerique n'emet pas de bruits radio-electriques depassant les limites applicables aux appareils numeriques de la classe B prescrites dans le Reglement sur le brouillage radioelectrique edicte par le ministere des Communications du Canada. CONNECTING TO THE TELEPHONE COMPANY It is not necessary to notify the telephone company before installing the modem. However, the telephone company may request the telephone number(s) to which the Courier is connected and the FCC information printed above. If the telephone company has any questions or raises problems, ask them to call the Technical Support Department, USRobotics, Inc., 800/982- 5151. If the modem is malfunctioning, it may affect the telephone lines. In this 28 case, disconnect the modem until the Regulatory Information xi COURIER HIGH SPEED MODEMS source of the difficulty is traced. Do not use the modem on party or coin telephone lines. 29 xii Regulatory Information 30 COURIER HIGH SPEED MODEMS RADIO AND TELEVISION INTERFERENCE This equipment generates and uses radio frequency energy and if not installed and used properly, in strict accordance with the manufacturer's instructions, may cause interference to radio and television reception. Courier high speed modems have been tested and found to comply with the limits for a Class B computing device in accordance with the specifications in Part 15 of FCC rules, which are designed to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation. If this device does cause interference to radio or television reception, which you can determine by monitoring reception when the modem is on and off, try to correct 31 the problem with one or more of the following measures. Reorient the receiving antenna. Relocate the computer with respect to the receiver. Relocate the computer and/or the receiver so that they are on separate branch circuits. If necessary, consult your dealer or an experienced radio/television technician for additional suggestions. You may find the following booklet, prepared by the Federal Communications Commission, helpful: Regulatory Information xiii COURIER HIGH SPEED MODEMS 32 How to Identify and Resolve Radio-TV Interference Problems Stock No. 004-000-0345-4 U.S. Government Printing Office Washington, DC 20402 In accordance with Part 15 of the FCC rules, any modification to or tampering with this device that causes harmful interference to others may be reason for prohibiting future operation. 33 xiv Regulatory Information COURIER HIGH SPEED MODEMS FOR CANADIAN MODEM USERS The Canadian Department of Communications (DOC) label identifies 34 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 a user's satisfaction. Before installing this equipment, make sure you are permitted to connect it to the facilities of the local telecommunications company. You must also install the equipment using an acceptable method of connection. In some cases, you may also extend the company's inside wiring for single line individual service by means of a certified connector assembly (telephone extension cord). You should be aware, however, 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 35 made by a user to this equipment, or equipment malfunctions, may give the telecommunications company cause to request the user to disconnect the equipment. For your own protection, make sure that the electrical ground connections of the power utility, telephone lines, and internal metallic water pipe system, if present, are connected together. This Regulatory Information xv COURIER HIGH SPEED MODEMS precaution may be particularly important in rural areas. CAUTION: Do not attempt to make such connections yourself; contact the appropriate electric inspection authority or electrician. 36 Courier High Speed Modems Load Number: 41B The Load Number (LN) assigned to each terminal device denotes the percentage of the total load to be connected to the telephone loop used by the device, without 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 the devices not exceed 100. An alphabetic suffix is also specified in the Load Number for the appropriate ringing type (A or B), if applicable. For example, LN = 41B designates a Load Number of 41 and a B- type ringer. 37 xvi Regulatory Information 38