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3Com OfficeConnect
®
56K Business Modem
Command Reference
http://www.3com.com/
Published January 1999
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3Com Corporation Copyright © 1999, 3Com Corporation. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or 3800 Golf Rd. adaptation) without written permission from 3Com Corporation. Rolling Meadows, Illinois 3Com Corporation reserves the right to revise this documentation and to make changes in content from time 60008 to time without obligation on the part of 3Com Corporati
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CONTENTS ABOUT THIS GUIDE Introduction ........................................................................................ 1 Finding Specific Information in This Guide ............................................ 2 Conventions ........................................................................................ 2 Related Documentation ....................................................................... 3 Year 2000 Compliance ............................................................
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Setting up your ISP information .................................................1-16 Other Operating Systems ................................................................1-17 If You Are Using Windows 3.x ...................................................1-17 If You Are Using MS-DOS ...........................................................1-17 If You Are Using UNIX, Linux, or AIX ..........................................1-17 2 USING THE AT COMMAND SET Overview ............................
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Call Detection .................................................................................. 4-6 Caller ID Functions ........................................................................... 4-7 Service Types ............................................................................... 4-7 Applications of Caller ID Technology ............................................ 4-7 How the Business Modem Handles Caller ID ................................ 4-8 Presentation Formats ...............
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Controlling Link Speeds with &N and &U ..........................................8-4 Controlling Link Speeds ...............................................................8-4 Limiting the Highest Possible Connect Speed ...............................8-4 Limiting the Lowest Possible Connect Speed ................................8-5 Limiting a Range of Possible Connect Speeds ...............................8-5 &N and &U Command Values ......................................................8-6 Sett
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Software Flow Control .............................................................. 11-2 Received Data Flow Control ............................................................ 11-3 Transmit-Data Flow Control ............................................................ 11-5 12 HANDSHAKING, ERROR CONTROL, DATA COMPRESSION, AND THROUGHPUT Handshaking ..................................................................................12-1 Selective Reject ...........................................
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Digital Loopback Testing (AT&T3) ...............................................14-5 Remote Digital Loopback Testing (AT&T6, AT&T7) ......................14-6 Granting a Digital Loopback Test Request (AT&T4) .....................14-6 Canceling All Digital Loopback Test Requests (&T5) ....................14-6 Testing Using Keyboard Data (AT&T6) ........................................14-7 Testing Using a Built-in Test Pattern (AT&T7) ...............................14-8 Testing the Business Modem
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Getting New Operating Software .................................................. 16-2 Sending New Software to your modem .......................................... 16-2 If Your Modem Doesn’t Respond .................................................... 16-4 A S-REGISTERS Understanding Bit-Mapped S-Registers .............................................A-1 How bits are mapped to decimal values ............................................A-1 Converting Bits to Decimal Values .....................
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Additional Specifications ..............................................................E-3 Serial Ports ...................................................................................E-3 The EIA-232 Interface ..................................................................E-4 Wiring a DB-25 to DB-9 Cable .....................................................E-4 Minimum Requirements ...............................................................E-4 Flow Control Requirements ................
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ABOUT THIS GUIDE Introduction This guide is a command reference for the 3Com OfficeConnect 56K Business Modem. It includes information about AT commands, S-Registers and troubleshooting. If the information in the release notes shipped with your product differs from the information in this guide, follow the instructions in the release notes. Finding Specific This table shows the location of specific information in this guide. Information in This Guide If you are looking for information abou
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BOUT HIS UIDE 2 A T G Conventions Table 1 and Table 2 list conventions that are used throughout this guide. Table 1 Notice Icons Icon Notice Type Description Information note Important features or instructions Caution Information to alert you to potential damage to a program, system, or device Warning Information to alert you to potential personal injury Table 2 Text Conventions Convention Description Commands The word “command” means you must enter the command exactly as shown in text and
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Related Documentation 3 Table 2 Text Conventions (continued) Convention Description Words in italicized Italics emphasize a point or denote new terms at the place type where they are defined in the text. Words in bold-face Bold text denotes key features. type Related The 3Com OfficeConnect 56K Business Modem Installation Guide should Documentation be used for the installation of the Business Modem. Year 2000 For information on Year 2000 compliance and 3Com products, visit the Compliance 3C
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BOUT HIS UIDE 4 A T G
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CONNECTING TO YOUR ISP 1 This chapter contains information about configuring your modem for various operating systems. ■ Windows 95/98 ■ Windows NT 4.0 and Later ■ Macintosh ■ Other Operating Systems Windows 95/98 The first time you start Windows 95/98 after you’ve installed the modem, Windows 95/98 will auto-detect your modem. Since Windows 95/98 supports Plug and Play, most installations are trouble-free. You must power on your modem before you start Windows 95/98, or Windows 95/98 will n
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HAPTER ONNECTING TO OUR 1-2 C 1: C Y ISP 3 When the following window appears, insert your Connections CD-ROM, change the default drive in Copy Manufacturer’s files from: to D:\ (or the correct path of your CD-ROM) and click OK to install the INF file. 4 Windows 95/98 displays a window asking you to choose your modem type from the list. Select the your modem from the list and click OK. Your modem is now ready to use! Files Needed By Your For your modem to work most efficiently, 3Com recommend
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Windows 95/98 1-3 Step One: Determine if Dial-Up Networking is Installed 1 Click Start | Settings | Control Panel. 2 On the Control Panel, double-click on Network. The Network widow will appear. If Dial-Up Adapter Do this Is listed Go to the section "Installing TCP/IP Support" to install Dial-Up Networking. Is not listed Go to Step 3. 3 Return to the Control Panel and double-click on Add/Remove Add/Remove Programs Properties Programs to open the window. 4 Click Windows Setup tab. 5 Double-cl
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HAPTER ONNECTING TO OUR 1-4 C 1: C Y ISP 8 Insert your Windows 95/98 Setup diskette or CD-ROM when you are prompted, and Windows 95/98 installs Dial-Up Networking. Step Two: Installing Dial-Up TCP/IP Support 1 Click Start | Settings | Control Panel. 2 On the Control Panel, double-click on the Network to display the Network window: 3 Determine if the TCP/IP Dial-Up Adapter is installed: IF TCP/IP -> Dial-Up Adapter Do this Is not listed Click Add | Protocol | Microsoft | TCP/IP | OK. Insert
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Windows 95/98 1-5 My Connection 9 On the window, click Server Type, and deselect the following: ■ Log on to Network ■ NetBEUI ■ IPX/SPX Compatible
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HAPTER ONNECTING TO OUR 1-6 C 1: C Y ISP 10 Click OK, and OK. If your ISP Do this Gives you a specific IP Go to Step Four: Customizing TCP/IP Settings or Domain Name server addresses Does not give you a Double-click on the icon you just created to dial your ISP. specific IP or Domain Name server addresses Step Four: Customizing the TCP/IP Settings Depending on the ISP you use, you may need to customize the TCP/IP settings. Follow steps 1-6 and if you still cannot connect to your ISP contac
