• Document: 3Com U.S. Robotics. 56K Message Modem. User s Guide & Reference
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3Com U.S. Robotics 56K Message Modem User’s Guide & Reference This manual covers installation and operating instructions for the following modem: • 3Com U.S. Robotics 56K Message Modem external modem IMPORTANT MESSAGE: In accordance with the ITU-I standard for 56K transmissions, this modem is capable of 56Kbps downloads. However, the download speeds you experience may be lower due to varying line conditions and other factors. Uploads from users to server equipment travel at speeds up to 31.2 Kbps. An analogue phone line compatible with the ITU-T 56K standard (V.90) or x2 technology, and an Internet provider or corporate host site with the ITU-T 56K standard (V.90) or x2 technology are necessary for these high-speed downloads. Visit our Web site at http://www.3com.co.uk for future updates and enhancements. 3Com, the 3Com logo, and U.S. Robotics are registered trademarks and Total Control, Courier, x2 and the x2 logo are trademarks of 3Com Corporation or its subsidiaries. Windows is a registered trademark of Microsoft Corp. Any other trademarks, trade names, service marks, or service names owned or registered by any other company and used in this manual are the property of their respective owners. © 1999 3Com Corporation 220 Wharfdale Road Winnersh Wokingham Berkshire RG41 5TP All Rights Reserved P/N: 2.024.288-A Table of Contents WELCOME TO 56K* INFORMATION ACCESS..................................1 PRODUCT FEATURES........................................................................2 FAX STANDARDS .................................................................................2 SUMMARY OF FEATURES .................................................................4 REMOTE VOICE RETRIEVAL ..................................................................7 T ELEPHONE HANDSET DTMF DIGITS FOR REMOTE MESSAGE RETRIEVAL .8 INDEPENDENT MODE FACSIMILE (FAX) FORWARDING ...............................8 CALLER ID FEATURE (APPLIES IN THE UK ONLY).....................................9 PART I : EXTERNAL MODEM INSTALLATION ................................10 SECTION A: EXTERNAL MODEM INSTALLATION WITH WINDOWS 3.X .........10 How to Connect the Modem.........................................................11 SECTION B : EXTERNAL MODEM INSTALLATION WITH WINDOWS 95.........12 How to Move Through the Screens You See When Windows Restarts .......................................................................................15 PART II : BEYOND SETUP................................................................22 SECTION A: INSTALLING VOICE/FAX/DATA SOFTWARE .........................23 Type of Modem............................................................................23 Initialisation String........................................................................23 Flow Control ................................................................................24 UART - Universal Asynchronous Receiver Transmitter.................24 (External Modems Only) ..............................................................24 SECTION B : TROUBLESHOOTING AND ONLINE HELP RESOURCES ...........25 If Plug and Play Does Not Detect Your Modem ............................31 Online Help Resources..............................................................32 Are You Still Having Problems? ...............................................34 SECTION C : GLOSSARY ....................................................................35 SECTION D : TECHNICAL QUICK REFERENCE........................................45 Basic Data Commands ................................................................48 S-Registers..................................................................................58 The Serial Interface......................................................................68 SECTION E : CE COMPLIANCE ............................................................69 Electromagnetic Compatibility ......................................................69 Safety (Low Voltage Directive) .....................................................69 CTR 21 Approval .........................................................................70 Network Compatibility Declaration................................................70 SECTION F : LIMITED WARRANTY........................................................71 Welcome to 56K* Information Access The International Telecommunications Union (ITU) decides the technical protocols communications devices must use to interoperate with each other. Modems that comply with ITU standards can “talk to” other standards-compliant modems and fax machines worldwide. The ITU has decided on a worldwide 56K standard technology. So, now with a U.S. Robotics modem you

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