Page 1 This manual covers installation and operating instructions for the following 3Com modems: ® Sportster 33.6 kbps internal and external modems 3Com, the 3Com logo, U.S. Robotics, the USRobotics logo, and Sportster are registered trademarks; Connections, Total Control, Courier, RapidComm, x2, and the x2 logo are trademarks and Towne Square 2000 is a service mark of 3Com Corporation or its subsidiaries.
Page 2: Table Of Contents
ABLE OF ONTENTS Before You Begin (Windows 95 Users) Internal Modem Installation with Windows 3.x A Word about COM Ports and IRQs How to Use ComTest to Determine Your Modem’s Settings Testing an Installed Modem What to Do with ComTest’s Recommendation How to Change the Modem’s Settings How to Insert the Modem into the Computer Internal Modem Installation with Windows 95...
Page 3 ABLE OF ONTENTS External Modem Installation with Windows 95 How to Determine Which Serial Cable to Buy How to Connect the Modem to the Computer Installing the Modem Drivers Manual Modem Installation Software Installation and Testing Software Installation and Registration Using the Setup Wizard Sending Your First Fax Installing Other Fax/Data Software Type of Modem...
Page 4 ABLE OF ONTENTS Using Modem to Computer Using the Extended Information Screens U.S. Robotics Modem Update Wizard Installation Operation Troubleshooting and Online Help Resources Online Help Resources Are You Still Having Problems? If You Need to Return the Modem to Us RapidComm Troubleshooting Tips A Note to Users with Older Versions of RapidComm on Their Systems Glossary...
Page 5: Able Of Ontents
ABLE OF ONTENTS IC (Canada) UL Listing/CUL Listing Connecting to the Telephone Company Fax Branding Radio and Television Interference For Canadian Modem Users Limited Warranty Index...
Page 6: Before You Begin (Windows 95 Users)
EFORE EGIN 5. Select the option at the top of the screen to Your Sportster modem is a Plug and Play ® device. Windows 95 can automatically show Interrupt Requests (IRQs). identify a Plug and Play device and determine if You will see the IRQs your system is currently your system has the resources necessary to using.
Page 7 EFORE EGIN The number following the text “Microsoft Determining Your Version of Windows 95” will end with “950”, “950a”, Windows 95 or “950b”. This indicates your version of Windows 95. Write this number on the Follow these steps to determine your version blank below for later reference.
Page 8 EFORE EGIN ™ Upgrading to x2 Technology Be sure to read the section titled “U.S. Robotics Modem Update Wizard” on page 101 for information on upgrading your 33.6 ™ faxmodem to x2 technology, allowing downloads of up to 56 kbps*. IMPORTANT! All x2 products are capable of 56 kbps downloads;...
Page 9: A Word About Com Ports And Irqs
® NTERNAL ODEM NSTALLATION WITH INDOWS A Word about COM Ports You’ll need these items from your ® Sportster modem box: and IRQs Most computer accessories — a mouse, sound card, enhanced graphics card, scanner, etc. — require a special connection through which they can communicate with the modem phone cord...
Page 10 NTERNAL ODEM NSTALLATION WITH INDOWS Each COM port uses an interrupt request D KEY POINT: Accessories cannot (IRQ). An accessory uses an IRQ to get the attention of your computer’s centralprocessing share COM ports and should not share IRQs. When accessories try to share unit (CPU) so that the accessory can perform settings, they will either not work a task.
Page 11: How To Use Comtest To Determine Your Modem's Settings
NTERNAL ODEM NSTALLATION WITH INDOWS the program that determines which COM ports and IRQs are available for use by NOTE: Some communications your modem. software programs require a particular setting for your modem (RapidComm, 3. The screen in the next column appears which shipped with your modem, does when ComTest starts.
Page 12 NTERNAL ODEM NSTALLATION WITH INDOWS 5. If you have a free setting, you will see a screen like this. Then click Next. 4. Click Internal Modem. Then click Next. COM2/IRQ3 is free in this example. ComTest might instead recommend COM1/IRQ4, COM3/IRQ4, or COM4/IRQ3 for your modem.
Page 13 NTERNAL ODEM NSTALLATION WITH INDOWS If you do not have a free setting, you will see a screen like this. Go to “What to Do with ComTest’s Recommendation” on page 8. Click Finish to exit ComTest. Go to “What to Do with ComTest’s Recommendation” on page 8.
Page 14: Testing An Installed Modem
NTERNAL ODEM NSTALLATION WITH INDOWS Testing an Installed Modem What to Do with ComTest’s Recommendation If there is a modem already installed in your computer, you can determine its COM and IRQ settings by selecting the Test an NOTE: If your communications installed modem option.
Page 15 NTERNAL ODEM NSTALLATION WITH INDOWS If ComTest recommended COM2/IRQ3 If you do not have a sound card, use COM3/IRQ5. Write “COM3” and “IRQ5” Write “COM2” and “IRQ3” in the spaces in the spaces provided on the first page of provided on the first page of this manual. Go to this manual.
Page 16 NTERNAL ODEM NSTALLATION WITH INDOWS into that port will not work after the port Find out which socket is COM1 and which has been disabled. is COM2. Then return to this point in this manual to If nothing is plugged into either port, you continue.
Page 17: How To Change The Modem's Settings
NTERNAL ODEM NSTALLATION WITH INDOWS If you’ve disabled COM2, you can now use the COM2/IRQ3 setting. Write the setting down on the first page of this manual. How to Change the Modem’s Settings 1. Always touch an unpainted metal part of your computer (the back is usually 3.
Page 18 NTERNAL ODEM NSTALLATION WITH INDOWS 4. Move the jumper shunt to the new setting. The COM port setting can involve one TIP: Grasp the jumper shunts with to three shunts. The four possible COM a tweezers or needle-nosed pliers. DO port settings are as follows: NOT grasp too firmly, as you may crush the jumper shunts.
Page 19: How To Insert The Modem Into The Computer
NTERNAL ODEM NSTALLATION WITH INDOWS 1. Turn off your computer and unplug it from How to Insert the Modem the electrical outlet. into the Computer 2. Unplug any peripheral devices (printer, monitor, keyboard, mouse, etc.) from the computer. NOTE: Before installing your modem, write its serial number in the space provided on the first page of TIP:...
Page 20 NTERNAL ODEM NSTALLATION WITH INDOWS 3. Remove the screws from your computer’s cover and then remove the cover, as shown in the following diagrams. Your computer may differ in appearance from these diagrams, but the basic principle for removing the cover should be the same. 4.
Page 21 NTERNAL ODEM NSTALLATION WITH INDOWS modem all the way into the slot. If you feel resistance, the modem may not be properly lined up with the slot. Do not force it into the slot. Remove the modem and try again. 5.
Page 22 NTERNAL ODEM NSTALLATION WITH INDOWS 7. Replace the computer’s cover and fasten it 10. If you wish to use a phone through the line with the screws you removed in step 3. the modem uses (when the modem is not in use), plug your phone’s cord into the 8.
Page 23 NTERNAL ODEM NSTALLATION WITH INDOWS “Software Installation and Testing” on page 57. If you have your modem configured to any other setting, open Program Manager and double-click the Main icon. NOTE: You cannot use the modem and a phone at the same time if they share the same telephone line.
Page 24 NTERNAL ODEM NSTALLATION WITH INDOWS 15. Double-click the Ports icon. 17. Click Advanced. 16. If it’s not already selected, click the COM port for your modem. Then click Settings. 18. In the Interrupt Request Line (IRQ) box, select the IRQ that ComTest recommended.
Page 25 NTERNAL ODEM NSTALLATION WITH INDOWS until you see a screen with a Close button. 19. Click OK. Click Close to exit Program Manager. You are now ready to install the software on the Connections CD-ROM (included with your Sportster modem). Turn to “Software Installation and Testing”...
Page 26: Internal Modem Installation With Windows 95
® NTERNAL ODEM NSTALLATION WITH INDOWS You’ll need these items from your Plug and Play Installation ® Sportster modem box: Since your new Sportster is a “Plug and Play” device, Windows 95 may be able to detect your modem automatically after you plug it into your computer.
Page 27 NTERNAL ODEM NSTALLATION WITH INDOWS 2. Take the modem out of its plastic bag. jumper shunts so they are hanging as in the following diagram. 3. Find the jumper shunts (small black plastic pieces) on the COM port and IRQ jumper pins on your modem.
Page 28: How To Insert The Modem Into The Computer
NTERNAL ODEM NSTALLATION WITH INDOWS 1. Turn off your computer and unplug it from How to Insert the Modem the electrical outlet. into the Computer 2. Unplug any peripheral devices (printer, monitor, keyboard, mouse, etc.) from the computer. NOTE: Before installing your modem, write its serial number in the space provided on the first page of TIP:...
Page 29 NTERNAL ODEM NSTALLATION WITH INDOWS 3. Remove the screws from your computer’s 4. Find an empty ISA expansion slot that’s at cover and then remove the cover, as shown least as long as the gold edge of your in the following diagrams. Your computer modem.
Page 30 NTERNAL ODEM NSTALLATION WITH INDOWS 5. Holding the modem at each corner, with the gold edge facing the slot, push the modem down as gently as possible until it snaps into the expansion slot. (Note: The following diagram shows horizontally aligned expansion slots.
Page 31 NTERNAL ODEM NSTALLATION WITH INDOWS this jack, disconnect the phone’s cord from the jack. WARNING : The phone jack you use must be for an ANALOG phone line (the type found in most homes). Many office buildings have digital phone lines.
Page 32: Installing The Modem Drivers
NTERNAL ODEM NSTALLATION WITH INDOWS Installing the Modem Drivers NOTE: If you wrote “950b” on page 2 of this User’s Guide, got to “Installing Modem Drivers with Windows 95 Version 950b” on page 29. Otherwise, follow these instructions. Installing Modem Drivers with Click Driver from disk provided by Windows 95 Versions 950 and 950a hardware manufacturer.
Page 33 NTERNAL ODEM NSTALLATION WITH INDOWS 2. When you see this screen, insert the 3. Once Windows finishes loading the Connections CD into your CD-ROM information from the CD-ROM, you should drive and type D:\ to replace the A:\. verify that the modem installation was a (NOTE: If your CD-ROM drive has a success.
Page 34 NTERNAL ODEM NSTALLATION WITH INDOWS 4. Double-click the Modems icon (circled in 5. In the “Modems Properties” screen, you the screen image below). should see “Sportster 33600 Fax PC Plug and Play” listed.
Page 35 NTERNAL ODEM NSTALLATION WITH INDOWS This means the installation was a success. Click OK. NOTE: If you do not see your modem listed in the preceding screen, the Plug and Play installation was unsuccessful. Please refer to the “Manual Modem Installation” section on page 49.
Page 36 NTERNAL ODEM NSTALLATION WITH INDOWS Installing Modem Drivers with Windows 95 Version 950b NOTE: If this screen does not 1. When Windows restarts, it should detect appear, go to the section titled “Manual Modem Installation” on page 49. the modem (see following screen image). Insert the Connections CD and click 2.
Page 37 NTERNAL ODEM NSTALLATION WITH INDOWS 3. Once Windows 95 has installed the 4. Once Windows restarts, you should verify modem’s drivers, you will see the following that the modem installation was a success. screen. This screen tells you which When your desktop returns, click the communications port your modem is Windows Start button and point to installed to.
Page 38 NTERNAL ODEM NSTALLATION WITH INDOWS 5. Double-click the Modems icon (circled in 6. In the “Modems Properties” screen, you the screen image below). should see “Sportster 33600 Fax PC Plug and Play” listed.
Page 39 NTERNAL ODEM NSTALLATION WITH INDOWS This means the installation was a success. Click OK. NOTE: If you do not see your modem listed in the preceding screen, the Plug and Play installation was unsuccessful. Please refer to the “Manual Modem Installation” section on page 49.
Page 40: External Modem Installation With Windows 3
® XTERNAL ODEM NSTALLATION WITH INDOWS How to Determine Which You’ll need these items from your ® Sportster modem box: Serial Cable to Buy Before you can begin installation, you need to purchase an RS-232 serial modem cable. This modem phone cord section will help you to determine which serial modem cable to purchase.
Page 41: How To Connect The Modem To The Computer
XTERNAL ODEM NSTALLATION WITH INDOWS If your PC's serial connector looks like this… How to Connect the Modem to the Computer 1. Turn off your computer and any attached devices, such as a printer. 2. Connect the serial cable to the modem and to the computer.
Page 42 XTERNAL ODEM NSTALLATION WITH INDOWS 4. Plug one end of the phone cord into the NOTE: You cannot use the modem TELCO jack (labeled with a wall plug icon and a phone at the same time if they on the bottom of the case) and the other share the same telephone line.
Page 43 XTERNAL ODEM NSTALLATION WITH INDOWS the software, registering the modem, and You are now ready to install the software trying out your modem by faxing U.S. on the Connections CD-ROM (included Robotics. with your Sportster modem). Turn to “Software Installation and Testing” (page 57) for detailed information about installing...
Page 44: External Modem Installation With Windows 95
® XTERNAL ODEM NSTALLATION WITH INDOWS You’ll need these items from your How to Determine Which ® Sportster modem box: Serial Cable to Buy Before you can begin installation, you need to purchase an RS-232 serial modem cable. This modem phone cord section will help you to determine which serial modem cable to purchase.
Page 45: How To Connect The Modem To The Computer
XTERNAL ODEM NSTALLATION WITH INDOWS How to Connect the Modem If your PC's serial connector looks like this… to the Computer 1. Turn off your computer and any attached devices, such as a printer. 2. Connect the serial cable to the modem and to the computer.
Page 46 XTERNAL ODEM NSTALLATION WITH INDOWS WARNING : The phone jack you use must be for an ANALOG phone line (the type found in most homes). Many office buildings have digital phone lines. Be sure you know which type of line you have. The modem will be damaged if you use a digital phone line.
Page 47: Installing The Modem Drivers
XTERNAL ODEM NSTALLATION WITH INDOWS Installing the Modem Drivers NOTE: If you wrote “950b” on page 2 of this User’s Guide, go to “Installing Modem Drivers with Windows 95 Version 950b” on page 44. Otherwise, follow these instructions. Click Driver from disk provided by Installing Modem Drivers with Windows 95 Versions 950 and 950a hardware manufacturer.
Page 48 XTERNAL ODEM NSTALLATION WITH INDOWS 2. When you see this screen, insert the 3. Once Windows 95 finishes loading the Connections CD into your CD-ROM information from the CD-ROM, you should drive and type D:\ to replace the A:\. verify that the modem installation was a (NOTE: If your CD-ROM drive has a success.
Page 49 XTERNAL ODEM NSTALLATION WITH INDOWS 4. Double-click the Modems icon (circled in 5. In the “Modems Properties” screen, you the screen image below). should see “Sportster 33600 Fax Plug and Play” listed. This means the installation was a success. Click OK.
Page 50 XTERNAL ODEM NSTALLATION WITH INDOWS NOTE: If you do not see your modem listed in the preceding screen, the Plug and Play installation was unsuccessful. Please refer to the “Manual Modem Installation” section on page 49. 6. Next, click the Diagnostics tab at the top of the “Modems Properties”...
Page 51 XTERNAL ODEM NSTALLATION WITH INDOWS Installing Modem Drivers with Windows 95 Version 950b NOTE: If this screen does not 1. When Windows restarts, it should detect appear, go to the section titled “Manual Modem Installation” on page 49. the modem (see following screen image). Insert the Connections CD and click 2.
Page 52 XTERNAL ODEM NSTALLATION WITH INDOWS 3. Once Windows 95 has installed the 4. Once Windows restarts, you should verify modem’s drivers, you will see the following that the modem installation was a success. screen. This screen tells you which When your desktop returns, click the communications port your modem is Windows Start button and point to installed to.
Page 53 XTERNAL ODEM NSTALLATION WITH INDOWS 5. Double-click the Modems icon (circled in 6. In the “Modems Properties” screen, you the screen image below). should see “Sportster 33600 Fax Plug and Play” listed. This means the installation was a success. Click OK.
Page 54 XTERNAL ODEM NSTALLATION WITH INDOWS NOTE: If you do not see your modem listed in the preceding screen, the Plug and Play installation was unsuccessful. Please refer to the “Manual Modem Installation” section on page 49. 7. Next, click the Diagnostics tab at the top of the “Modems Properties”...
Page 55: Manual Modem Installation
ANUAL ODEM NSTALLATION 2. Double-click Add New Hardware. Plug and Play installations are not always successful. If you were directed to this section, Plug and Play installation failed to work properly. Follow these instructions to manually install your new Sportster modem: 1.
Page 56 ANUAL ODEM NSTALLATION 5. Click No and then click Next. 6. Click Modem and then click Next.
Page 57 ANUAL ODEM NSTALLATION 7. When you see this screen, de-select the 8. Click Change. Don’t detect my modem… option if it’s selected (i.e. make sure there is not a check mark in the box next to the selection). Then click Next.
Page 58 ANUAL ODEM NSTALLATION 9. Click Have Disk. 10. When you see this screen, insert the Connections CD into your CD-ROM drive. Type D:\ in the Copy manufacturer’s files from: field.. Then click OK. NOTE: If your CD drive has a letter name other than “D”, type that letter in place of “D”.
Page 59 ANUAL ODEM NSTALLATION 11. When you see this screen, click U.S. 12. Write the COM port setting (in the top line Robotics, Inc. in the first column and of the following screen) here: ____. then click Sportster 33600 Fax PC (NOTE: The following screen shows Plug and Play (in the second column) information for an internal modem installed...
Page 60 ANUAL ODEM NSTALLATION 13. When you see this screen, click Finish. 14. Now you should verify that the modem installation was a success. When your desktop returns, click the Windows Start button and point to Settings. Then click Control Panel.
Page 61 ANUAL ODEM NSTALLATION 15. Double-click the Modems icon (circled in 16. In the “Modems Properties” screen, you the screen image below). should see your modem listed. NOTE: The screen below shows an external 33.6 modem listed. Your screen may show different information, but you should verify that the description is accurate for the product you installed.
Page 62 ANUAL ODEM NSTALLATION NOTE: If you do not see your modem listed in the preceding screen, the installation was unsuccessful. Please refer to the “Troubleshooting and Online Help Resources” section on page 113. Turn to “Software Installation and Testing” (page 57) for detailed information about installing RapidComm, registering the modem, and trying out your modem by faxing U.S.
Page 63: Software Installation And Testing
OFTWARE NSTALLATION AND ESTING Software Installation and Additionally, RapidComm software lets you connect to BBSs and other online data Registration Using the providers. Take advantage of this access to Setup Wizard enter a new world of information and entertainment. This section guides you through the U.S. ™...
Page 64 OFTWARE NSTALLATION AND ESTING 1. From the Windows 95 desktop, click the 3. You will briefly see a screen that looks like Start button and then click Run. this. 4. When you are asked if you wish to run the Setup Wizard, click Yes.
Page 65 OFTWARE NSTALLATION AND ESTING 5. This is the Setup Wizard’s “Welcome” 6. When you see the following screen, select screen. After reading the screen, click your modem from the list, verify that the Next. COM port setting is correct, and then click Next.
Page 66 OFTWARE NSTALLATION AND ESTING 7. When you see the next two screens, fill in the blank boxes with the appropriate information, using the TAB key to move between fields. Click Next on each screen when you have filled in all of the necessary information.
Page 67 OFTWARE NSTALLATION AND ESTING 8. You will see the following screen as the 10. The next screen introduces the U.S. Setup Wizard creates a U.S. Robotics Robotics Registration Wizard. After you Connections program group. read the screen, click Next. Read through each of the next two screens and verify or correct the information you typed earlier.
Page 68 OFTWARE NSTALLATION AND ESTING 11. When you see this screen, you are ready to register your new modem. Click By Modem. We recommend you choose the By Modem option because it’s a great way to verify that your Sportster modem is correctly installed.
Page 69 OFTWARE NSTALLATION AND ESTING 12. When you see this screen… If you do not need to dial a prefix, simply click Dial. 13. You will see a screen indicating that the registration information has been sent (see circled text in the screen below). If you need to dial a prefix (such as 9) to make a call outside your building, type the prefix before the 1 in the Prefix box...
Page 70 OFTWARE NSTALLATION AND ESTING NOTE: If the Setup Wizard detected Internet Explorer on your system during the setup process, your computer will launch the Connections CD-ROM when you click OK. Continue at step 15. If the Setup Wizard DID NOT detect At the end of the installation process, you Internet Explorer on your system earlier in will see the following screen.
Page 71 OFTWARE NSTALLATION AND ESTING Windows 3.x users: Windows will 15. When the main Connections menu restart. When your desktop reappears, you appears, click Business & Productivity will see a Connections icon (shown below) on the left hand side of the screen (circled in the Connections program group.
Page 72 OFTWARE NSTALLATION AND ESTING 16. On the Business & Productivity menu is 17. The next screen contains a menu on the a RapidComm button (circled in the right hand side of the screen. Included on following screen shot). RapidComm is the the menu is a Learn More &...
Page 73 OFTWARE NSTALLATION AND ESTING 18. The next screen displays information about the RapidComm software. When you are NOTE: If you are using Netscape ready to install the RapidComm software, Navigator to view your Connections CD- click Install (circled in the lower left hand ROM, you may be asked to save the corner of the following screen image).
Page 74 OFTWARE NSTALLATION AND ESTING 20. You will see this screen as files are copied. 19. The next screen is the first of the “RapidComm Setup” screens. When this screen appears, make sure the location shown in the text box is where you would like the files copied to and then click Install.
Page 75 OFTWARE NSTALLATION AND ESTING want to send a fax, you must select RapidComm as the printer in the program from which you are printing. 22. This screen marks the end of the RapidComm installation. Click OK. 23. Click OK to return to Connections. Click Exit (circled in the following screen image).
Page 76 OFTWARE NSTALLATION AND ESTING 24. Restart Windows by clicking the Windows 26. The following is the first RapidComm Start button and pointing to Shut Down. Setup Wizard screen. After you read the Click Restart the Computer? on the Shut screen, click Next. Down Windows screen.
Page 77 OFTWARE NSTALLATION AND ESTING 27. When you see this screen, verify the 28. After you verify the information on this information shown and then fill in the Data screen, click Next. box (if you have a third phone number just for your modem) and the Local Area Code box.
Page 78 OFTWARE NSTALLATION AND ESTING 29. Select the correct modem in the text box 30. When you see this screen… on the following screen. Then click Next. If you want the RapidComm program to launch with every Windows startup, select the Run RapidComm at Windows startup check box.
Page 79: Sending Your First Fax
OFTWARE NSTALLATION AND ESTING Sending Your First Fax 31. You will see this screen. Using RapidComm software, you can send and receive faxes directly from your computer and eliminate the need for a fax machine. Once you learn the basics of sending faxes, you can learn more involved fax functions, such as sending documents to groups of numbers at assigned times and how to transfer data files.
Page 80 OFTWARE NSTALLATION AND ESTING document to the 3Com fax number, 847- 676-3559. NOTE: If you need to enter a prefix (such as 9) to dial a number outside your building, type the prefix before the fax number in the Fax number field.
Page 81 OFTWARE NSTALLATION AND ESTING 6. You will see a series of screens as the fax is Congratulations —you are being transmitted. When the fax has been now ready to start using successfully transmitted, you will see a your Sportster modem! screen that looks like this.
Page 82: Installing Other Fax/Data Software
NSTALLING THER OFTWARE You do not have to use the RapidComm KEY POINT: Refer to the manual fax/data software included with your new that came with your software for its Sportster modem. Your modem was designed installation instructions. The for and tested using a wide range of software’s installation program will ask communications software packages.
Page 83: Uart (External Modems Only)
NSTALLING THER OFTWARE serial rate in any communications software you use. NOTE: You may need to disable Select this the flow control (hardware or software) If this is your UART... serial rate that you are not using. UART (External Modems) 16550* 115.2 or 57.6 kbps...
Page 84: Using Modem Station
SING ODEM TATION What Does Modem Station You may want to “tweak” your modem for optimum performance. You’d rather be surfing the Internet. Modem Station provides a simple to use Installing Modem Station interface that makes communicating with your modem even easier. If you did not install Modem Station when you Modem Station allows you to point and first installed the Connections CD, please...
Page 85 SING ODEM TATION 6. You will be asked whether you wish to 9. When you see this screen, click Next to install Modem Station. Click Yes. accept the default directory or click Browse to change directories. 7. Wait a few moments for the Installation Wizard to load.
Page 86 SING ODEM TATION 10. Click Next on the following screen to 11. When you see the following screen, click accept the default program folder. You can Finish to complete the installation. place Modem Station in an existing folder by selecting one from the list. If this is the first time you’ve installed Modem Station, you may be asked to restart your computer.
Page 87: Starting Modem Station
SING ODEM TATION Starting Modem Station 1. If you didn’t start Modem Station from the Setup program, please start it now. 2. Click Windows Start button and then point to Programs. Click U.S. Robotics Modem Station (or the folder you selected during installation).
Page 88 Use Modem Configurator for DETECT NEW MODEMS troubleshooting, initial configuration, and tuning This option detects US Robotics modems your modem for optimum performance. Using installed on your system and shows what the options available in Modem Configurator, COM port they are using.
Page 89: Using Detect New Modems
SING ODEM TATION CONTACT/SUPPORT Using Detect New Modems This option details how to get in touch with 1. Click Detect New Modems to bring up U.S. Robotics. the following screen. TIP: For your convenience, we provide many on-line support avenues. For specific questions, our fax-on-demand service is a good place to start.
Page 90 SING ODEM TATION 2. Click Scan to have Modem Station check If your modem is installed and configured for installed modems. This may take a few correctly, Modem Station will find the moments. modem and display make and model 3. When the scan finishes, you will see the information under the assigned port.
Page 91: Using Terminal
SING ODEM TATION If you look at the information for the port your modem is using, you will see three buttons. These allow you to access Terminal and Modem Configurator without going back to the main menu. Extended Information provides detailed information about your modem, previous connections, firmware dates, etc.
Page 92 SING ODEM TATION NOTE: Modem Station’s Terminal window is provided primarily for troubleshooting convenience. If you frequently use BBSs, you will probably want to use a separate, full-featured Terminal program like the one provided in our RapidComm software. On the lower part of the Terminal screen, you will see the COM port your modem is currently using.
Page 93: Using Modem Configurator
SING ODEM TATION modem. We will discuss port speed settings in When you are finished using Terminal, click detail later in this section. Exit to return to the screen you accessed it from. Terminal includes a basic auto dialer. To have Terminal dial a number for you, click Using Modem Configurator Dial to bring up the “Dial”...
Page 94 SING ODEM TATION The Modem Configurator menu gives you The “Data Control” screen allows you to access to the following options: assign the following basic communications settings: DATA CONTROL CONNECTION CONTROL PORT SPEED MODEM TO COMPUTER PARITY CONNECTION RATES STOP BITS DIALING/ANSWERING WORD STORED NUMBERS...
Page 95 SING ODEM TATION CONNECTION CONTROL Once you have entered the Data Control settings, click Save to Modem. This stores This is where you adjust your modem’s the settings so that you do not have to re-enter connection and transmission settings. them.
Page 96: Using Modem To Computer
SING ODEM TATION Use the “Connections Control” screen to configure the following settings: DATA TERMINAL READY (DTR) ERROR CORRECTION DATA COMPRESSION CARRIER DETECT For detailed information about these settings, refer to the “Glossary” or the “Technical Quick Reference” sections of this manual. Once you have configured your Connection Control settings, click Save to Modem to TIP:...
Page 97 SING ODEM TATION TIP: If you type ATDT and see ‘AATTDDTT’ on your screen, it is possible that both your software and modem have Local Echo set to ‘ON’. Turn Local Echo ‘OFF’ on EITHER the modem or the software to solve this problem.
Page 98 SING ODEM TATION CONNECTION RATES In the upper left hand corner of the screen you will see the current connection commands. The “Connection Rates” screen allows you to configure modem speeds and protocols. This screen allows you to configure the following settings: WARNING! Use caution...
Page 99 SING ODEM TATION DIALING/ANSWERING The next screen allows you to adjust how your TECHNICAL STUFF: modem initiates and receives calls. “Negotiation” is the noise we hear when two modems connect. The modems exchange information about their respective protocols and configurations. Once they agree on the fastest protocol they can both handle, transmission begins.
Page 100 SING ODEM TATION You can change stored numbers by highlighting them and then typing the new numbers in their place. Once you store your numbers, you can dial them by entering this command from Terminal Mode: ATDS0, ATDS1, ATDS2, etc. Your U.S.
Page 101: Using The Extended Information Screens
SING ODEM TATION available from many of the screens within We devote a separate section to the Extended Modem Station. When you click Restore Information screens so that we can explain Defaults, you will see a confirmation screen what you’ll see (and why it is important to you) asking if you are as fully as possible.
Page 102 SING ODEM TATION CONFIGURATION PROFILE LINK DIAGNOSTICS VxD CONFIGURATION DIAL/SECURITY Winmodem users will have access to VxD information via these screens. Courier users will have access to Dial/Security information. Click ROM Checksum to bring up the following screen. Technicians use the ROM Checksum to verify information stored in the modem’s Read Only Memory.
Page 103 SING ODEM TATION To see information about the profile in use, click Active Profile to bring up the next screen. The “Product” screen displays the make and model of your modem. It is the equivalent of This screen contains information about your the ATI3 command.
Page 104 SING ODEM TATION The two lines below the connection settings are same format as the “Active Profile” screen with the advanced commands currently in use. the addition of stored phone numbers. Below them is a display of the contents of the The next two screens contain information that ‘S-Registers’...
Page 105 SING ODEM TATION The “Configuration” screen displays the stored in the Supervisor chip. (The following information about your modem. Supervisor chip contains the special Product Type displays the information software used to control your modem’s relating to the make and model of your functions.) If a support representative asks modem.
Page 106 SING ODEM TATION DAA Country displays the countries your The “Link Diagnostics” screen displays modem is designed for. This is important statistics about your last connection. This because phone systems and screen is most often used as an aid in telecommunications laws vary from country diagnosing connection failures, but it also can to country.
Page 107 SING ODEM TATION The rest of the screen contains information the functions handled by hardware in our other about CRC errors, Block Errors (Blers), modems. If you are using a Winmodem, the resent data, and other data. This information is Extended Information menu will offer you the very important if you experience problems option of clicking on VxD to view information...
Page 108: Robotics Modem Update Wizard
U.S. R OBOTICS ODEM PDATE IZARD ™ Your Connections CD-ROM includes the U.S. Robotics Modem Update Wizard. This software NOTE: Complete the instructions in is designed to quickly update your modem, the Software Installation and Testing whether to a newer version of its current code or section of this manual before installing ™...
Page 109 U.S. R OBOTICS ODEM PDATE IZARD 3. From the main Connections menu, click 2. Click the Windows Start menu and point to Customer Support (circled in the following Programs. Point to U.S. Robotics screen shot). Connections. Then click Connections. NOTE: Windows 3.x users launch the CD-ROM by clicking the Connections icon in the Connections program group.
Page 110 U.S. R OBOTICS ODEM PDATE IZARD 4. When the Customer Support menu appears, 5. Next, click Learn More & Get Software click Modem Update Wizard (circled in the (circled in the following screen shot). following screen shot).
Page 111 U.S. R OBOTICS ODEM PDATE IZARD 6. In the following screen, click Install. NOTE: If you use Netscape to view the Connections interface, you will be asked to save the setup program for the Update Wizard to your hard drive. Save the utility to your hard drive and exit Connections.
Page 112 U.S. R OBOTICS ODEM PDATE IZARD 8. The next screen indicates where the installer will store the files for the Update Wizard. If the indicated location is acceptable, click Next. Otherwise, click Browse to find an acceptable directory.
Page 113: Operation
U.S. R OBOTICS ODEM PDATE IZARD 9. You will see the following screen for a moment Operation as the installer creates the Modem Update 1. Click the Windows Start button. Point to Wizard program group. Programs. Then point to U.S. Robotics Modem Update Wizard.
Page 114 U.S. R OBOTICS ODEM PDATE IZARD 3. This brings up the license agreement. After 4. The software will now detect any modems reading the license agreement, click Accept to installed on your system. When the detection continue. phase finishes, you will see the following screen (the modems shown on your screen may differ).
Page 115 U.S. R OBOTICS ODEM PDATE IZARD 5. The program will now determine if the selected Click Other to learn more about how to modem is software upgradable. purchase a U.S. Robotics x2 modem. Non-Upgradable Modems Upgradable Modems If the modem IS software upgradable, you will If your modem IS NOT software upgradable, see the following screen.
Page 116 U.S. R OBOTICS ODEM PDATE IZARD 7. The following screen dials the U.S. Robotics to upgrade a 33.6 kbps modem to 56 kbps code or click Update my modem’s code to Update Server. Click Tone or Pulse dialing as update your modem with the most recent necessary.
Page 117 U.S. R OBOTICS ODEM PDATE IZARD 8. Once connected, the server will compare available upgrades with the current code in your modem. If they differ, the server will automatically initiate the download procedure. NOTE: Users purchasing a 56K upgrade are asked if the charge is acceptable (see the following screen image).
Page 118 U.S. R OBOTICS ODEM PDATE IZARD NOTE: If you do not have the most up to date .inf file for your modem (the file that helps Windows correctly identify your modem), you will see the following screen as the Modem Update Wizard automatically downloads the file.
Page 119 U.S. R OBOTICS ODEM PDATE IZARD 9. You will see this screen as the Wizard WARNING! To avoid the risk of downloads the file for your modem. damaging your modem, DO NOT turn off the modem while it is being updated. 11.
Page 120 U.S. R OBOTICS ODEM PDATE IZARD 13. Click OK once you verify that the process was 12. You will see a “Congratulations!” screen. a success. When you return to the Click Details. “Congratulations!” screen, click Finished. Congratulations! Enjoy the benefits of your updated Sportster modem!
Page 121: Troubleshooting And Online Help Resources
ROUBLESHOOTING AND NLINE ESOURCES PROBLEM DIAGNOSIS POSSIBLE SOLUTION The computer Your modem Make sure the modem is turned on. The power switch is on top of external modems. or software might not be The CS light on the front panel should be lit. If you installed an internal modem, it will not turned on.
Page 122 ROUBLESHOOTING AND NLINE ESOURCES PROBLEM DIAGNOSIS POSSIBLE SOLUTION The computer or You may have a COM Make sure you have the correct COM port and IRQ settings in your software will not port/IRQ conflict (cont.). software and/or in the Windows Device Manager. recognize the modem (cont.).
Page 123 ROUBLESHOOTING AND NLINE ESOURCES PROBLEM DIAGNOSIS POSSIBLE SOLUTION The modem won’t If you have voice mail, Answer your voice mail to restore your normal dial tone. go off hook to dial your dial tone may be or doesn’t answer altered when messages are the phone (cont.) waiting.
Page 124 ROUBLESHOOTING AND NLINE ESOURCES PROBLEM DIAGNOSIS POSSIBLE SOLUTION Your modem won’t The modem you’re trying You can disable error control on your modem by typing AT&M0 in connect at 2400 to connect with could be terminal mode and pressing ENTER. Now try placing the call to the bps with a 2400 an older model that remote modem again.
Page 125 ROUBLESHOOTING AND NLINE ESOURCES PROBLEM DIAGNOSIS POSSIBLE SOLUTION Your You may have a bad Try placing the call again. The phone company routes calls differently each communications phone line. time. software is Optimum flow control In terminal mode, type AT&F1 and press ENTER to load the optimum reporting many settings may not be hardware flow control settings.
Page 126 ROUBLESHOOTING AND NLINE ESOURCES PROBLEM DIAGNOSIS POSSIBLE SOLUTION Your You may be trying to Download to an uncompressed area on your hard drive. communications download a file to a software is compressed area of your reporting many hard disk. cyclic redundancy check (CRC) errors and low characters In terminal mode, type AT&H3&I2&R2S7=90 and press ENTER.
Page 127: Online Help Resources
ROUBLESHOOTING AND NLINE ESOURCES Online Help Resources Connecting to the 3Com BBS To connect to the 3Com Bulletin Board System, follow these steps: 1. Start the RapidComm program. The software settings for the BBS are: ANSI terminal emulation Data Bits: 8 3.
Page 128 ROUBLESHOOTING AND NLINE ESOURCES Downloading the Technical Reference create a password of your choice, and to fill Guide out a questionnaire. To download the Technical Reference Guide, follow these steps: 1. In the main menu, type D for Download a file.
Page 129 ROUBLESHOOTING AND NLINE ESOURCES 2. A Filename to Download: text box PKUNZIP.EXE is also available on appears on the screen. the BBS. 336_HELP.ZIP—The Guide in a zipped Windows Help format. 336_ASCI.TXT—The Guide in an uncompressed ASCII format. 4. Protocol Type for Transfer. Your selection depends on what your software supports.
Page 130: America Online
ROUBLESHOOTING AND NLINE ESOURCES World Wide Web U.S. Robotics offers a number of other online technical support options. Choose any one of A U.S. Robotics Home Page containing the the following options if you need help with or same information as the Internet on Demand want to learn more about your new modem.
Page 131: Are You Still Having Problems
ROUBLESHOOTING AND NLINE ESOURCES Are You Still Having Technical Support Hotline Problems? Technical questions about U.S. Robotics modems can also be answered by technical Review this manual. support representatives. Call or visit your modem dealer. They Hotline (847) 982-5151 may be able to assist you. This is much (Hours: 8:00 am - 6:00 pm CST) more efficient and time-saving than returning the modem to U.S.
Page 132: If You Need To Return The Modem To Us
ROUBLESHOOTING AND NLINE ESOURCES Ship to the following address: If You Need to Return the 3Com Modem to Us Attn: RMA Contact 3Com Customer Support. If the SRO# 6201 W. Oakton, East Dock support representative determines that you Morton Grove, IL 60053 need to return the modem, you will receive an SRO (Service Repair Order) number.
Page 133: A Note To Users With Older Versions Of Rapidcomm On Their Systems
ROUBLESHOOTING AND NLINE ESOURCES PROBLEM: The station ID works A Note to User’s with Older intermittently. Versions of RapidComm on DIAGNOSIS: Under certain circumstances Their Systems (including receiving a fax), the station ID may not work properly. You must uninstall older versions of RapidComm from your system before PROBLEM: RapidComm does not work installing the most recent version (contained...
Page 134: Glossary
LOSSARY answer mode Cross references are printed in boldface. Cross references with items in the Command The mode used by your modem when Summary, found in the Technical Quick answering an incoming call from an originating Reference (Section D), are printed in italics. modem.
Page 135: Auto Answer
LOSSARY ASCII auto answer American Standard Code for Information Sets the modem to pick up the phone line Interchange. A code used to represent letters, when it detects a certain number of rings. See numbers, and special characters such as $, !, S-register S0 in the “Technical Quick and /.
Page 136: Baud Rate
LOSSARY baud rate bits per second (bps) A term used to measure the speed of an analog The bits (binary digits) per second rate. transmission from one point to another. Thousands of bits per second are expressed as Although not technically accurate, baud rate is kilobits per second (kbps).
Page 137 LOSSARY carrier class 1 and 2.0 The basic signal altered or modulated by the International standards used by fax modem in order to carry information. application programs and faxmodems for sending and receiving faxes. character cyclic redundancy checking (CRC) A representation, coded in binary digits, of a An error-detection technique consisting of a letter, number, or other symbol.
Page 138 LOSSARY data compression table default A table containing values assigned for each Any setting assumed, at startup or reset, by the character during a call under MNP5 data computer's software and attached devices. The compression. Default values in the table are computer or software will use these settings continually altered and built during each call: until changed by the user or other software.
Page 139 LOSSARY digital loopback duplex A test that checks the modem's RS-232 Indicates a communications channel capable of interface and the cable that connects the carrying signals in both directions. See half terminal or computer and the modem. The duplex, full duplex. modem receives data (in the form of digital Electronic Industries Association (EIA) signals) from the computer or terminal, and...
Page 140 LOSSARY fax mode full duplex The mode used by a modem to send and Signals can flow in both directions at the same receive data in facsimile format. See time over one line. In microcomputer definitions for V.17, V.27ter, V.29. communications, may refer to the suppression of the online local echo.
Page 141 LOSSARY LAPM Hertz, a frequency measurement unit used Link Access Procedure for Modems. An internationally to indicate cycles per second. error-control protocol defined in ITU-T Recommendation V.42. Like the MNP ITU-T protocols, LAPM uses cyclic redundancy An international organization that defines checking (CRC) and retransmission of standards for telegraphic and telephone corrupted data (ARQ) to ensure data...
Page 142 LOSSARY off. On the Sportster modem, it includes four Microcom Networking Protocol, an error- stored phone numbers and the modem settings. control protocol developed by Microcom, off/on hook Inc., and now in the public domain. There are Modem operations that are the equivalent of several different MNP protocols, but the most manually lifting a phone receiver (taking it off- commonly used one ensures error-free...
Page 143 LOSSARY parity A simple error-detection method that checks Random Access Memory. Memory that is the validity of a transmitted character. available for use when the modem is turned on, Character checking has been surpassed by but that clears of all information when the more reliable and efficient forms of error power is turned off.
Page 144 LOSSARY terminal Read Only Memory. Permanent memory, not A device whose keyboard and display are user-programmable. used for sending and receiving data over a communications link. Differs from a serial transmission microcomputer or a mainframe in that it has The consecutive flow of data in a single little or no internal processing capabilities.
Page 145 LOSSARY throughput V.21 The amount of actual user data transmitted per An ITU-T standard for modems operating in second without the overhead of protocol asynchronous mode at speeds up to 300 bps, information such as start/stop bits or frame full-duplex, on public switched telephone headers and trailers.
Page 146 LOSSARY V.22 bis V.32 modems fall back to 4800 bps when line An ITU-T standard for modem quality is impaired. communications at 2400 bps. The standard V.32 bis includes an automatic link negotiation fallback An ITU-T standard that extends the V.32 to 1200 bps and compatibility with Bell connection range: 4800, 7200, 9600, 12,000, 212A/V.22 modems.
Page 147 LOSSARY V.42 XON/XOFF An ITU-T standard for modem Standard ASCII control characters used to communications that defines a two-stage tell an intelligent device to stop/resume process of detection and negotiation for transmitting data. LAPM error control. Ymodem V.42 bis An error-checking protocol that can send An extension of ITU-T V.42 that defines a several files of data at a time in 1024-byte specific data compression scheme for use...
Page 148: Technical Quick Reference
ECHNICAL UICK EFERENCE This section includes information about: Front Panel Lights Command Summary DIP Switches S-Registers The Serial Interface (cable information)
Page 149: Front Panel Lights (External Modems)
ECHNICAL UICK EFERENCE Front Panel Lights (External Modems) Symbol Meaning Status AA ..Auto Answer....Answer mode: ON when register S0 is set to 1 or higher (Auto Answer), and when answering a call; OFF when modem originates a call. Light flashes when there is an incoming call. CD..
Page 150: Command Summary
ECHNICAL UICK EFERENCE Command Summary Type commands in either upper or lower case, not a combination. Use the Backspace key to delete errors. (You cannot delete the original AT command since it is stored in the modem buffer.) If a command has numeric options and you don’t include a number, zero is assumed.
Page 151 ECHNICAL UICK EFERENCE Command Set U.S./ITU-T answer sequence. Use in conjunction with D, S, or & commands (or just AT) ITU-T answer to display a basic command sequence list; online help. U.S. answer tone Manual Answer: goes off hook Dials the specified phone in answer mode.
Page 152 ECHNICAL UICK EFERENCE numbers are stored Wait for second dial with the &Zn=s tone (X2 or X4); command. linked to S6 register. Tone dial Dials, waits for quiet (Comma) Pause, See answer, and continues S8 definition; which (X3 or higher). it’s linked to.
Page 153 ECHNICAL UICK EFERENCE remote system to your Results of RAM screen. checksum Local echo OFF. Product type Receiving system Current modem may send a remote settings echo of data it Nonvolatile memory receives. (NVRAM) settings Link diagnostics Controls ON/OFF hook. Product configuration Hangs up (goes on Controls speaker volume...
Page 154 ECHNICAL UICK EFERENCE Speaker ON until Displays result codes CONNECT. only in Originate Speaker always ON. mode. Speaker ON after dial, Sr.b=n Sets bit .b of register r to n until CONNECT. (0/OFF or 1/ON). Returns online. Sr=n Sets register r to n. Returns online.
Page 155 ECHNICAL UICK EFERENCE Sets result code displayed. Default is X4. Xn Setting Result Codes 0/OK 1/CONNECT 2/RING 3/NO CARRIER 4/ERROR 5/CONNECT 1200 6/NO DIAL TONE 7/BUSY 8/NO ANSWER* 9/Reserved 10/CONNECT 2400 11/RINGING 13/CONNECT 9600 18/CONNECT 4800 20/CONNECT 7200 21/CONNECT 12000 25/CONNECT 14400 43/CONNECT 16800 85/CONNECT 19200...
Page 156 ECHNICAL UICK EFERENCE Xn (continued) Result Codes (cont.) Adaptive Dialing Wait for 2nd Dial Tone (W) Wait for Answer (@) Fast Dial *Requires @ in dial string; replaces NO CARRIER...
Page 157 ECHNICAL UICK EFERENCE Resets modem to Selects power-on/reset factory default profile default configuration. 1 (&F1) Default is profile 0 Resets modem to setting in NVRAM factory default profile Default is profile 1 2 (&F2) setting in NVRAM &$ Displays a list of Resets modem.
Page 158 ECHNICAL UICK EFERENCE &A3 Protocol indicators &C1 Normal CD added operations LAPM/MNP/NONE &Dn Controls Data Terminal (error control) and Ready (DTR) operations. V42bis/MNP5 (data &D0 DTR override compression) &D1 DTR toggle causes &Bn Manages modem’s serial online Command port rate. mode &B0 Variable, follows...
Page 159 ECHNICAL UICK EFERENCE &Hn Sets Transmit Data (TD) &Fn Loads a read-only (non- flow control (see also &Rn). programmable) factory &H0 Flow control disabled configuration. &H1 Hardware flow &F0 Generic template control, Clear to &F1 Hardware flow Send (CTS) control template &H2 Software flow control, &F2 Software flow control...
Page 160 ECHNICAL UICK EFERENCE &K3 MNP5 compression &In Sets Receive Data (RD) disabled software flow control (see also &Rn). &Mn Sets Error Control (ARQ) for connections at 1200 bps &I0 Software flow and higher. control disabled &I1 XON/XOFF signals to &M0 Normal mode, error your modem and control disabled remote system...
Page 161 ECHNICAL UICK EFERENCE &N0 Variable rate &Nn Sets connect speed. If &N1 300 bps connection cannot be &N2 1200 bps established at this speed, &N3 2400 bps the modem will hang up. &N4 4800 bps Sets ceiling connect speed if &N5 7200 bps &Un is greater than 0.
Page 162 ECHNICAL UICK EFERENCE &Pn Sets pulse (rotary) dial &S1 Modem controls DSR make/break ratio. &Tn Begins test modes (used in &P0 U.S./Canada ratio, conjunction with s register 39%/61% 18). &P1 U.K. ratio, 33%/67% &T0 Ends testing &Rn Sets Receive Data (RD) &T1 Analog Loopback hardware flow control,...
Page 163 ECHNICAL UICK EFERENCE &T8 Analog Loopback with &U12 24,000 bps self-test and error &U13 26,400 bps detector &U14 28,800 bps &U15 31,200 bps &Un Sets floor connect speed &U16 33,600 bps when &Un is set greater than 0. &Nn is the ceiling &Wn Writes current connect speed.
Page 164 ECHNICAL UICK EFERENCE &Zn? Displays the phone number &Yn Sets break handling. stored at position n (n = 0 &Y0 Destructive, but doesn’t send break &Y1 Destructive, &ZL? Displays the last executed expedited dial string. &Y2 Nondestructive, #CID=n Controls Caller ID expedited feature.
Page 165: Dip Switches (Modems With Dip Switches Only)
ECHNICAL UICK EFERENCE DIP Switches (Modems with DIP Switches Only) Note: If a DIP switch is on, it is down. If a DIP switch is off, it is up. Defaults are in italics. DIP switches which control a modem function override related modem commands written to the modem (i.e.
Page 166 ECHNICAL UICK EFERENCE Factory Switch Setting Function Carrier Detect (CD) Override OFF Modem sends CD signal when it connects with another modem, drops CD on disconnect CD always ON (Override) Power-on and ATZ Reset Software Defaults OFF Loads Y or Y1 configuration from user-defined nonvolatile memory (NVRAM) Loads &F0 Generic template from read only memory (ROM) AT Command Set Recognition OFF Disables command recognition (Dumb Mode)
Page 167: S-Registers
ECHNICAL UICK EFERENCE S-Registers To change a setting, use the ATSr=n command, where r is the register and n is a decimal value from 0 255 (unless otherwise indicated). Register Default Function Sets the number of rings on which to answer in Auto Answer Mode. When set to 0, Auto Answer is disabled.
Page 168 ECHNICAL UICK EFERENCE Register Default Function Sets the number of seconds the modem waits before dialing. If Xn is set to X2 or X4, this is the time-out length if there isn' t a dial tone. Sets the number of seconds the modem waits for a carrier. May be set for much longer duration if, for example, the modem is originating an international connection.
Page 169 ECHNICAL UICK EFERENCE Register Default Function S10 (cont.) A better alternative is to ask your phone company how to temporarily disable call waiting (usually *70W). For example: ATDT *70W phone number. Note: If you set S10 = 255, the modem will not hang up when carrier is lost. Dropping DTR hangs up the modem.
Page 170 ECHNICAL UICK EFERENCE Register Default Function S13 (cont.) Value Result At power on/reset, Auto Dial the number stored in NVRAM at position 0. Reserved Disable quick retrains. Disconnect on escape code. The 1.5K-byte non-ARQ buffer allows data transfer with Xmodem- and Ymodem-type file transfer protocols without using flow control.
Page 171 ECHNICAL UICK EFERENCE Register Default Function S15 (cont.) Value Result MNP incompatibility. Disable V.42 operation. To disable V.42 detect phase, select the total of the values for bits 3 and 7. Bit-mapped register setup. To set the register, see instructions for S13. Value Result Reserved...
Page 172 ECHNICAL UICK EFERENCE Register Default Function Stores the ASCII decimal code for the XON character. Stores the ASCII decimal code for the XOFF character. Sets the duration, in hundredths of a second, that DTR must be dropped so that the modem doesn’t interpret a random glitch as a DTR loss.
Page 173 ECHNICAL UICK EFERENCE Register Default Function S27 (cont.) Value Result Software compatibility mode. This setting disables the codes and displays the 9600 code instead. The actual rate of the call can be viewed on the ATI6 screen. Used for unusual software incompatibilities. Some software may not accept 7200, 12,000, and 14,400 bps or greater result codes.
Page 174 ECHNICAL UICK EFERENCE Register Default Function S32 (cont.) Value Result Reserved. Disable V.34 modulation. Disable V.34+ modulation. 32-128 Reserved. Bit-mapped register setup. To set the register, see the instructions for S13. Value Result Disable 2400 symbol rate. Disable 2743 symbol rate. Disable 2800 symbol rate.
Page 175 ECHNICAL UICK EFERENCE Register Default Function S34 (cont.) Value Result Disable 32S-2D trellis encoding. Disable 64S-4D trellis encoding. Disable non-linear coding. Disable TX level deviation. Disable Pre-emphasis. Disable Pre-coding. Bit-mapped register setup. To set registers, see instructions for S13. Value Result Limit back channel rate.
Page 176 ECHNICAL UICK EFERENCE Register Default Function Sets an optional delay, in seconds, before a forced hang-up and clearing of the Transmit buffer when DTR drops during an ARQ call. This allows time for a remote modem to acknowledge receipt of all transmitted data before it is disconnected.
Page 177: The Serial Interface
ECHNICAL UICK EFERENCE The Serial Interface The serial interface is a standard developed by the Electronic Industries Association (EIA). It defines the signals and voltages used when data is exchanged between a computer and a modem or serial printer. The entire standard covers many more functions than are used in most data communications applications.
Page 178: Serial Interface Pin Definitions
ECHNICAL UICK EFERENCE Serial Interface Pin Definitions Signal Source DB-25 DB-9 Circuit Function Computer/Modem — Chassis Ground Both Transmitted Data Computer Received Data Modem Request to Send Computer Clear to Send Modem Data Set Ready Modem Signal Ground Both Carrier Detect Modem —...
Page 179: Regulatory Information
EGULATORY NFORMATION Manufacturer’s Declaration Part 68: This equipment complies with FCC Rules Part of Conformity 68. Located on the bottom of the modem is 3Com the FCC Registration Number and Ringer 7770 North Frontage Road Equivalence Number (REN). You must Skokie, Illinois 60077-2690 provide this information to the telephone U.S.A.
Page 180: Caution To The User
EGULATORY NFORMATION Connection to party lines is subject to state Cet appareil numérique respecte les limites de tariffs. bruits radioélectriques applicables aux appareils numériques de Classe B préscrites An FCC compliant telephone cord and dans la norme sur le matériel brouilleur: modular plug are provided with this equipment, Appareils Numériques, NMB-003 édictée which is designed to connect to the telephone...
Page 181: Fax Branding
EGULATORY NFORMATION Be sure that the telephone line you are sending machine or of such business, other connecting the modem to is a standard entity, or individual. (The telephone number analog line and not a digital (PBX), party, or provided may not be a 900 number or any coin telephone line.
Page 182 EGULATORY NFORMATION device in accordance with the specifications in Relocate the computer and/or the receiver Part 15 of FCC rules, which are designed to so that they are on separate branch circuits. provide reasonable protection against such If necessary, consult your dealer or an interference in a residential installation.
Page 183: For Canadian Modem Users
EGULATORY NFORMATION For Canadian Modem Users of a certified connector assembly (telephone NOTICE: The Industry Canada (IC) label extension cord.) The customer should be identifies certified equipment. This certification aware that compliance with the above means the equipment meets certain conditions may not prevent degradation of telecommunications network protective, service in some situations.
Page 184 EGULATORY NFORMATION water pipe system, if present, are connected modems) or on the modem’s circuit board together. This precaution may be particularly (internal modems). important in rural areas. WARRANTY AND REPAIR SERVICE CENTER: CAUTION: Do NOT attempt to make such connections yourself.
Page 185 EGULATORY NFORMATION télécommunication. Le matériel doit également métalliques, s’il y en a, sont raccordé être installé en suivant une méthode acceptée ensemble. Cette précaution est de raccordment. L’abonné ne doit pas oublier particulièrement importante dans les régions qu’il est possible que la conformité aux rurales.
Page 186: Limited Warranty
EGULATORY NFORMATION L'Indice d'Equivalence de la Sonnerie (IES) which may be a refurbished model) at est situé au revers du modem (modems 3Com’s option, without charge for either externes), ou sur le circuit imprimé (modems parts or labor. This limited warranty shall internes).
Page 187 EGULATORY NFORMATION MERCHANTABILITY OR FITNESS vary from state to state. Some states do not FOR A PARTICULAR USE OR allow limitations on duration of an implied PURPOSE. U.S. ROBOTICS SHALL IN warranty, or the exclusion or limitation of NO EVENT BE LIABLE FOR ANY incidental or consequential damages, so the SPECIAL, INDIRECT, INCIDENTAL, above exclusion or limitation may not apply...
Page 188 EGULATORY NFORMATION corrugated cardboard box with plenty of packing material. DO NOT send the modem back in its original box. DO NOT send anything but the modem (do not send back the power supply, CD-ROM, documentation, etc.). If possible, send the modem via a courier capable of tracking the progress of the shipment.
Page 189: Index
Index Automatic Repeat reQuest (ARQ) light, 138 America Online, U.S. Robotics online support and, American Standard Code for Information baud rate, 130 Interchange. See ASCII BBS, U.S. Robotics, 119-120 analog loopback, 127 binary digit, 128 analog phone lines, vs. digital, 15, 24, 35, 39 bit rate, 128 analog signals, 127 bits per second (bps), 128...
Page 190 Index class 1 and 2.0 faxing standards, 129 Cyclic Redundancy Checking (CRC), 117- clear to send (CS) light, 138 118, 129 COM ports conflicts, 113-114 and Plug and play installations, 4, 19-20 data compression table, 129 command summary, 140-152 data mode, 130 communications software data terminal (terminating) equipment (DTE), and flow control, 116-117...
Page 191 Index duplex, 130 fax operations (FAX) light, 138 faxing with RapidComm software, 72-74 flow control, 75-76, 116-117, 131 frame, 131 EIA. See Electronic Industries Association front panel lights, summary, 138 Electronic Industries Association (EIA), 131 FTP, U.S. Robotics online support and, 122 error control, 131 full duplex, 131 disabling, 116...
Page 192 Index internal modems LAPM. See Link Access Procedure for faxing with, 72-74 Modems hardware installation Link Access Procedure for Modems (LAPM), Windows 3.x, 3-18 Windows 95, 19-32 local echo, 132 and Plug and Play installation, 4, 19-20 turning off, 114 International Telegraph and Telephone Consultative Committee (ITU-T), 132...
Page 193 Index nonvolatile memory (NVRAM), 132 RAM (random access memory), 133 NVRAM. See nonvolatile memory random access memory. See RAM RapidComm software faxing with, 72-74 installing, 57-74 troubleshooting, 124-125 off/on hook, 132 read only memory (ROM), 134 online fallback/fall forward, 133 received data (RD) light, 138 online help resources, 119-126 remote digital loopback, 133...
Page 194 Index serial number, modem, 15, 23 serial (COM) ports, 3-12, 19-20, 34, 38 UART, 76 conflicts, 113-114 upgrading/updating modems, 101-112 serial transmission, 134 U.S. Robotics shunts, jumper, 4, 10-12, 20 BBS, 119-120 start/stop bits, 116, 119, 134 online help resources, 119-126 Technical Reference Guide, downloading, 120-121...
Page 195 Index Windows 95 Ymodem, 136 determining your version, 2 Ymodem G, 136 World Wide Web (WWW), U.S. Robotics online support and, 122 Zmodem, 136 x2 technology, 2, 101-112 Xmodem, 136 xon/xoff, 136...

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