IBM 2193, 2194, 6345 Extended AT commands

B-10 IBM Personal Computer User Guide

Extended AT commands

Table 3: Extended AT commands

Command Function

&C0 Carrier Detect (CD) always on

&C1 Turn on CD when remote carrier is present

&D0 DTR signal ignored

&D1 Modem returns to Command Mode after DTR toggle

&D2 Modem hangs up and returns to the command mode after DTR toggle

&F Load factory default configuration

&G0 Guard tone disabled

&G1 550 Hz guard tone enabled

&G2 1800 Hz guard tone enabled

&V View active profiles

Contents

Main Page Second Edition (April 2001) Page Contents Page Page Page Page Page Notices xii IBM Personal Computer User Guide Conventions used in this book Symbols The following list contains an explanation of the symbols used in this document. Highlighting Highlight Purpose Safety in formati on Installation Safety while working with hardware Connecting your computer Disconnecting your computer Modem safety information Lithium battery notice Regulatory safety notice for the CD-ROM and DVD-ROM drive Laser compliance statement Consignes de scurit Installation Consignes de scurit lors de la manipulation du matriel Consignes de scurit relatives au modem Consignes relatives la pile au lithium Consignes de scurit pour lunit de CD-ROM et de DVD-ROM Conformit aux normes relatives aux appareils laser. Regulatory notices North American FCC and telephone company requirements Canadian Department of Communications certification label Page North American Federal Communications Commission (FCC) Statement IBM Personal Computer machine types 2196, 2197, and 6344 European Community Directive Conformance Statement Trademarks Year 2000 Notice In formation Page Page Ergonomics Arranging a comfortable and productive work area Arranging your work area Choosing a chair Positioning the monitor Positioning the keyboard Positioning the mouse Page Page Page Using this book Chapter 1. Using this book How this book is organized Part 1: Learning about this book Part 2: Support information Part 3: Controlling system settings Part 4: Upgrading and replacing hardware Using this book Part 5: Troubleshooting Part 6: Technical reference Where to find more information Part 2. Support information Page HelpWare support and services Chapter 2. HelpWare support and services What do I do first? What is IBM HelpWare? Need quick help? What can I do on my own? Printed documentation Online documentation Help files Readme files Software Diagnostics IBM Update Connector How do I get help electronically? Electronic support Internet HelpWare support and services How and when do I contact the IBM PC HelpCenter? What help can I get by telephone? 30-day "Up and Running" support Software technical support Additional support Hardware warranty service HelpWare support and services Before you call... 2-8 IBM Personal Computer User Guide HelpWare support and services How and when do I purchase additional support? Purchasing additional HelpWare services You can purchase support in the following ways Page HelpWare support and services To order additional support packages International Warranty Service - Not Available Page Express Maintenance Chapter 3. Express Maintenance Page Part 3. Controlling system settings Page Getting started Chapter 4. Getting started Controlling monitor settings Getting the best performance from your monitor Getting started Power saver feature Changing display settings Customizing display properties Tips for choosing display properties Getting started Using the Windows Help function to select display properties Controlling volume Adjusting the speaker volume Getting started Adjusting the headphone volume Page Getting started Getting ready to print Setting up communications Connecting your modem to the telephone network Getting started Configuring your communications software Configuring your computer for a connection to the Internet The IBM Internet Connection Services The Microsoft Network Getting started The Internet Connection Wizard Using the Rapid Access II keyboard Page Power management features Chapter 5. Power management features Software shutdown Using the software shutdown feature Power management features System Standby Using the Windows 98 Start menu Using the power button When the system is in "normal on" state: When the system is in "normal off" state: Page Monitor standby BIOS Setup configuration Chapter 6. BIOS Setup configuration Configuration/Setup Utility overview BIOS Setup configuration Entering Setup When the computer is on When the computer is off BIOS Setup configuration Working with the Setup menus Configuration/Setup Utility menu Viewing system information and product data BIOS Setup configuration Changing parameter settings Loading the default settings Canceling changes Exiting Setup Setup parameters Devices and I/O Ports Page Page Start Options BIOS Setup configuration Quick Power-On Self Test Boot Up Floppy Seek Boot Up NumLock Status Gate A20 Option Typematic Rate Setting Typematic Rate (Chars/Sec) BIOS Setup configuration Typematic Delay (Msec) Halt On Date and Time Advanced Setup Power Management Setup Page Page BIOS Setup configuration Automatic Power On ACPI suspend Type Clock Generator Configuration Set Password Page BIOS Setup configuration Using other configuration utilities Page Part 4. Upgrading and replacing hardware Page Preparing to upgrade Chapter 7. Preparing to upgrade Evaluating your new hardware For conflicts with system resources used by adapter cards For conflicts with other system resources Preparing to upgrade Planning your hardware changes Recording your changes Resolving resource conflicts Using Setup Using the Windows 98 Device Manager Preparing to upgrade Opening the system unit Taking safety precautions Removing the top cover Page Preparing to upgrade Looking inside the system unit Page Adding and removing adapter cards and drives Chapter 8. Adding and removing adapter cards and drives Resolving conflicts with installed adapter cards Setting modem card configurations Adding and removing adapter cards and drives Working with the hardware in the system unit Adding and removing adapter cards Installing adapter cards Adding and removing adapter cards and drives Removing adapter cards Removing and adding drives Identifying signal cable connectors Adding and removing adapter cards and drives Guidelines for connecting IDE/ATA signal cables Page Adding and removing adapter cards and drives Guidelines for connecting diskette interface signal cables Removing the diskette drive Adding and removing adapter cards and drives Removing the CD-ROM drive Removing the hard disk drive Adding and removing adapter cards and drives Installing a drive in Bay 2 Page Adding and removing adapter cards and drives Updating the CMOS settings in Setup For adapter cards For Drives Page Adding and replacing system board components Chapter 9. Adding and replacing system board components Page Adding and replacing system board components Page Page Page Page Card connector and jumper information Identifying adapter card connectors Setting a jumper Adding and replacing system board components Upgrading the system memory Installing memory modules Page Adding and replacing system board components Replacing the system battery Page Adding and replacing system board components Updating the CMOS settings in Setup Page Page Page Diagnosing and recovering from problems Chapter 10. Diagnosing and recovering from problems Before you panic: some simple fixes Diagnosing and recovering from problems Step 2 Did the system unit beep after it was turned on? No Yes, more than once 10-4 IBM Personal Computer User Guide Step 3 Is anything displayed on the monitor? Yes Step 3 Is anything displayed on the monitor? (Continued) No 10-6 IBM Personal Computer User Guide Quick problem solving chart Diagnosing and recovering from problems Solving hardware and software problems Solving hardware problems Table 1: Hardware problems 10-8 IBM Personal Computer User Guide Diagnosing and recovering from problems 10-10 IBM Personal Computer User Guide Diagnosing and recovering from problems 10-12 IBM Personal Computer User Guide Solving software problems Table 2: Software problems 10-14 IBM Personal Computer User Guide Table 2: Software problems Diagnosing and recovering from problems Solving modem problems 10-16 IBM Personal Computer User Guide Table 3: Modem problems (Continued) Diagnosing and recovering from problems Error codes and messages 10-18 IBM Personal Computer User Guide Table 4: Error codes and messages (Continued) Diagnosing and recovering from problems Table 4: Error codes and messages (Continued) IBM Diagnostic Programs Starting PC-Doctor for Windows Diagnosing and recovering from problems Starting the IBM Enhanced Diagnostics program Reinstalling device drivers or Recovering factory-installed programs and files Diagnosing and recovering from problems Page Part 6. Technical reference Page Specification tables Appendix A. Specification tables Memory module placement A-2 IBM Personal Computer User Guide Table 1: Memory module placement (Continued) Specification tables Memory map System input/output addresses Specification tables System interrupts Specification tables DMA channel assignments Serial port addresses Specification tables Connector functions Page Specification tables Page Modem information Appendix B. Modem information Modem features Page Modem information Operating your modem Using the Auto Answer feature Disabling Call Waiting Modem information Modem commands Executing commands Command format B-6 IBM Personal Computer User Guide AT commands Table 1: AT commands Modem information Table1: AT commands (Continued) Page Detail for +MS Controls Table 2: Detail for +MS Controls An example of a command is AT+MS = V90, 1, 24000, 33600, 28000, 56000 B-10 IBM Personal Computer User Guide Extended AT commands Table 3: Extended AT commands Modem information V.42bis commands Table 4: V.42bis commands B-12 IBM Personal Computer User Guide Modem response codes Modem information S registers Page Monitor terminology Appendix C. Monitor terminology Page Warranty Appendix D. Warranty Warranty statements Page Page Page Warranty Page Warranty Page Warranty Limitation of liability. Part 2 - Country-Unique Terms ASIA PACIFIC Warranty EUROPE, MIDDLE EAST, AFRICA (EMEA) The following terms apply to the country specified: Warranty Limitation of liability. NORTH AMERICA Index Index A B C D M O P Q S Index T V W