Manuale d’uso / di manutenzione del prodotto 3C905B del fabbricante 3Com
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This manual covers installation and operating instructions for the following 3Com ® U.S. Robotics ® modems: Sportster ® Voice 33.6 kbps internal modems 3Com, the 3Com logo, U.
T ABLE OF C ONTENTS ii Before You Begin (Windows 95 Users) 1 Determining Available Resources 1 Determining Your Version of Windows 95 2 Upgrading to x2 Technology 2 Modem Installation with Windows 3.
T ABLE OF C ONTENTS iii Installing Other Fax/Data Software 52 Type of Modem 52 Initialization String 52 Flow Control 52 U.S. Robotics Modem Update Wizard 53 Installation 53 Operation 58 Using Modem St.
T ABLE OF C ONTENTS iv Caution to the User 139 IC (Canada) 139 UL Listing/CUL Listing 139 Connecting to the Telephone Company 140 Fax Branding 140 Radio and Television Interference 141 For Canadian Mo.
B EFORE Y OU B EGIN (W INDOWS ® 95 U SERS ) 1 Determining Available Resources Your Sportster ® Voice modem is a Plug and Play device. Windows ™ 95 can automatically identify a Plug and Play device and determine if your system has the resources necessary to support the device.
B EFORE Y OU B EGIN (W INDOWS 95 U SERS ) 2 Determining Your Version of Windows 95 Follow these steps to determine your version of Windows 95. This information will be important during installation. 1. Click the My Computer icon on your desktop with the right mouse button.
M ODEM I NSTALLATION WITH W INDOWS ® 3. X 3 You’ll need these items from your Sportster ® modem box: modem phone cord Connections ™ CD microphone Plus: a screwdriver (not included) A Word about COM Ports and IRQs Most computer accessories — a mouse, sound card, enhanced graphics card, scanner, etc.
M ODEM I NSTALLATION WITH W INDOWS 3. X 4 processing unit (CPU) so that the accessory can perform a task. The computer stops what it’s doing, depending on the priority of the request, to help the accessory perform its task. When two accessories share an IRQ, it’s like two people asking different questions in unison to a third person.
M ODEM I NSTALLATION WITH W INDOWS 3. X 5 How to Use ComTest to Determine Your Modem’s Settings 1. Insert the Connections CD into your CD- ROM drive.
M ODEM I NSTALLATION WITH W INDOWS 3. X 6 4. Click Internal Modem . Then click Next . 5. If you have a free setting, you will see a screen like this. COM2/IRQ3 is free in this example. ComTest might instead recommend COM1/IRQ4, COM3/IRQ4, or COM4/IRQ3 for your modem.
M ODEM I NSTALLATION WITH W INDOWS 3. X 7 Click Finish to exit ComTest. Go to “What to Do with ComTest’s Recommendation” on page 8. 6. When you see this screen, click Finish to exit ComTest. Go to “What to Do with ComTest’s Recommendation” on page 8.
M ODEM I NSTALLATION WITH W INDOWS 3. X 8 What to Do with ComTest’s Recommendation NOTE: If your communications software requires a modem that ComTest does not recommend, there is a good chance that the setting is being used by another device in your system.
M ODEM I NSTALLATION WITH W INDOWS 3. X 9 If you do not have a sound card, use COM3/IRQ5. Write “COM3” and “IRQ5” somewhere where it will be handy during software installation. You will have to change the settings on your modem. Go to “How to Change the Modem’s Settings” on page 10.
M ODEM I NSTALLATION WITH W INDOWS 3. X 10 • Find out which socket is COM1 and which is COM2. • If nothing is plugged into either port, you may choose either of the ports to disable. Your computer manufacturer’s manual will tell you how to disable the COM port.
M ODEM I NSTALLATION WITH W INDOWS 3. X 11 modem’s jumper pins (see the following diagram). 3. To change the COM port and IRQ settings, you need to reposition the jumper shunts on the COM port and IRQ pins. To do this, lift the jumper shunts off the pins.
M ODEM I NSTALLATION WITH W INDOWS 3. X 12 4. Move the jumper shunt to the new setting. • The COM port setting can involve one to three shunts. The four possible COM port settings are as follows: 0 1 SEL COM 1 0 1 SEL COM 3 0 1 SEL COM 4 0 1 SEL COM 2 • Unlike most COM port settings, the IRQ setting involves only one jumper shunt.
M ODEM I NSTALLATION WITH W INDOWS 3. X 13 1. Turn off your computer and unplug it from the electrical outlet. 2. Unplug any peripheral devices (printer, monitor, keyboard, mouse, etc.) from the computer. TIP : Before you unplug anything, label the cords or make a sketch of how things are connected.
M ODEM I NSTALLATION WITH W INDOWS 3. X 14 4. Find an empty ISA expansion slot at least as long as the gold edge of your modem. (ISA slots have black plastic grooves lined with silver.) Unscrew and remove the expansion slot cover (the long narrow piece of metal that keeps dust from entering through the opening perpendicular to the slot).
M ODEM I NSTALLATION WITH W INDOWS 3. X 15 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. 6. Once the modem is in place, fasten it firmly using the screw that you removed in step 4.
M ODEM I NSTALLATION WITH W INDOWS 3. X 16 NOTE: You cannot use the modem and a phone at the same time if they share the same telephone line. 11. Plug the microphone included with your modem into the MIC jack on the modem.
M ODEM I NSTALLATION WITH W INDOWS 3. X 17 14. Double-click the Control Panel icon. 15. Double-click the Ports icon. 16. If it’s not already selected, click the COM port for your modem.
M ODEM I NSTALLATION WITH W INDOWS 3. X 18 18. In the Interrupt Request Line (IRQ) box, select the IRQ that ComTest recommended. 19. Click OK . You will see a brief series of screens after the preceding screen. Click OK on each screen until you see a screen with a Close button.
M ODEM I NSTALLATION WITH W INDOWS ® 95 19 You will need these items from your Sportster ™ modem box: modem phone cord Connections ™ CD microphone Plus: a screwdriver (not included) 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.
M ODEM I NSTALLATION WITH W INDOWS 95 20 3. Find the jumper shunts (small black plastic pieces) on the COM port and IRQ jumper pins on your modem. They should be in roughly the area indicated in the following illustration.
M ODEM I NSTALLATION WITH W INDOWS 95 21 How to Insert the Modem into the Computer NOTE: Before installing your modem, write down its serial number. (You’ll find the serial number underneath the bar code on the white sticker on the modem and on the outside of the box the modem came in.
M ODEM I NSTALLATION WITH W INDOWS 95 22 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. Refer to your computer manufacturer’s manual if you need further instructions.
M ODEM I NSTALLATION WITH W INDOWS 95 23 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.
M ODEM I NSTALLATION WITH W INDOWS 95 24 this jack, disconnect the telephone 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. Be sure you know which type of line you have.
M ODEM I NSTALLATION WITH W INDOWS 95 25 13. Plug the power cords, cables, and peripherals back into the computer and turn on the computer. 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 29.
M ODEM I NSTALLATION WITH W INDOWS 95 26 2. When you see this screen, insert the Connections CD into your CD-ROM drive and type D: to replace the A: . (NOTE : If your CD-ROM drive has a different letter name, type that letter instead of D .) Click OK .
M ODEM I NSTALLATION WITH W INDOWS 95 27 4. Double-click the Modems icon (circled in the screen image below). 5. In the “Modems Properties” screen, you should see “ Sportster 33600 Voice Internal PnP” listed.
M ODEM I NSTALLATION WITH W INDOWS 95 28 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 “ When Plug and Play Fails ” on page 95.
M ODEM I NSTALLATION WITH W INDOWS 95 29 Installing Modem Drivers with Windows 95 Version 950b 1. When Windows restarts, it should detect the modem (see following screen image). Insert the Connections CD and click Next . NOTE: If this screen does not appear, go to the section titled “ When Plug and Play Fails ” on page 95.
M ODEM I NSTALLATION WITH W INDOWS 95 30 3. Once Windows 95 has installed the modem’s drivers, you will see the following screen. This screen tells you which communications port your modem is installed to. (NOTE: Your screen may show a different COM port.
M ODEM I NSTALLATION WITH W INDOWS 95 31 5. Double-click the Modems icon (circled in the screen image below). 6. In the “Modems Properties” screen, you should see “ Sportster 33600 Voice Internal PnP” listed.
M ODEM I NSTALLATION WITH W INDOWS 95 32 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 “ When Plug and Play Fails ” on page 95.
S OFTWARE I NSTALLATION AND T ESTING 33 Software Installation and Registration Using the Setup Wizard This section guides you through the U.S. Robotics Setup Wizard, the Connections ™ CD-ROM interface, and the installation of RapidComm ™ Voice fax/data/voice software.
S OFTWARE I NSTALLATION AND T ESTING 34 1. From the Windows 95 desktop, click the Start button and then click Run . 2. In the text box, type D:setup.exe . (If your CD-ROM drive has a letter name other than D , type that letter in place of D .) 3. You will briefly see a screen that looks like this.
S OFTWARE I NSTALLATION AND T ESTING 35 5. This is the Setup Wizard’s “Welcome” screen. After reading the screen, click Next . 6. When you see the following screen, select your modem from the list and select the correct COM port setting in the Port box.
S OFTWARE I NSTALLATION AND T ESTING 36 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.
S OFTWARE I NSTALLATION AND T ESTING 37 10. The next screen introduces the U.S. Robotics Registration Wizard. After you read the screen, click Next . Read through each of the next two screens and verify or correct the information you typed earlier. Click Next on each screen to move on.
S OFTWARE I NSTALLATION AND T ESTING 38 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.
S OFTWARE I NSTALLATION AND T ESTING 39 • 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). 14. The next screen indicates that the Setup Wizard is finished.
S OFTWARE I NSTALLATION AND T ESTING 40 At the end of the installation process, you will see the following screen. Click Yes . Windows 95 users: Windows will restart and the Connections CD will launch automatically upon restart. Windows 3.x users: Windows will restart.
S OFTWARE I NSTALLATION AND T ESTING 41 15. When the main Connections menu appears, click Business & Productivity on the menu on the left hand side of the screen (circled below). 16. On the Business & Productivity menu is a RapidComm Voice button (circled in the following screen shot).
S OFTWARE I NSTALLATION AND T ESTING 42 17. The next screen contains another menu on the right hand side of the screen. Included on the menu is a Learn More & Get Software button (circled in the screen image below). Click this button. 18. The next screen displays information about the RapidComm Voice software.
S OFTWARE I NSTALLATION AND T ESTING 43 NOTE: If you are using Netscape Navigator to view your Connections CD- ROM, you may be asked to save the application’s installer to your computer when you click the Install button. Note the installer’s file name and its location on your computer.
S OFTWARE I NSTALLATION AND T ESTING 44 21. When you see this screen, click either Yes or No . • If you click Yes , every document you print will be treated as a fax unless you change the printer selection in the program from which you are printing.
S OFTWARE I NSTALLATION AND T ESTING 45 24. Restart Windows by clicking the Windows Start button and pointing to Shut Down . Click Restart the Computer? on the “Shut Down Windows” screen. Then click Yes . 25. When your desktop appears, click Windows Start .
S OFTWARE I NSTALLATION AND T ESTING 46 27. When you see this screen, verify the information shown and then fill in the Data box (if you have a third phone number just for your modem) and the Local Area Code box. Then click Next . 28. After you verify the information on this screen, click Next .
S OFTWARE I NSTALLATION AND T ESTING 47 29. Select the correct modem in the text box on the following screen. Then click Next . 30. The next screen allows you to select single or multiple mailboxes for your personal voice mail system. Click Single or Multiple and then click Next .
S OFTWARE I NSTALLATION AND T ESTING 48 31. When you see this screen… • If you want the RapidComm Voice program to launch at Windows startup, select the box to the left of Run RapidComm Voice at Windows startup . A check will appear in the box. Then click Finish .
S OFTWARE I NSTALLATION AND T ESTING 49 functions, such as sending documents to groups of numbers at assigned times and how to transfer data files. These more advanced functions are explained in the electronic RapidComm Voice manual on your Connections CD.
S OFTWARE I NSTALLATION AND T ESTING 50 5. When you see the following screen, fill in the necessary information in the text boxes. For testing purposes, send your “tester” document to the 3Com fax number, 847- 676-3559.
S OFTWARE I NSTALLATION AND T ESTING 51 Congratulations — you are now ready to start using your Sportster modem! Go to the electronic RapidComm Voice manual on your Connections CD for more detailed instructions on sending faxes and other things you can do using your Sportster modem and RapidComm Voice software.
I NSTALLING O THER F AX /D ATA S OFTWARE 52 Your modem was designed for and tested using a wide range of communications software packages. This section will guide you through some of the details you may need to know when installing communications software packages other than RapidComm Voice (included on the Connections CD-ROM).
U.S. R OBOTICS M ODEM U PDATE W IZARD 53 Your Connections ™ CD-ROM includes the U.S. Robotics Modem Update Wizard. This software is designed to quickly update your modem, whether to a newer version of its current code or to 3Com’s revolutionary new x2 ™ technology.
U.S. R OBOTICS M ODEM U PDATE W IZARD 54 2. Click the Windows Start menu and point to Programs . Point to U.S. Robotics Connections . Then click Connections . NOTE: Windows 3.x users launch the CD-ROM by clicking the Connections icon in the Connections program group.
U.S. R OBOTICS M ODEM U PDATE W IZARD 55 4. When the Customer Support menu appears, click Modem Update Wizard (circled in the following screen shot). 5.
U.S. R OBOTICS M ODEM U PDATE W IZARD 56 6. In the following screen, click Install (circled below). 7. This launches the U.S. Robotics Modem Update Wizard Installer. The screen that follows is the welcome screen for the installer. After you read this screen, click Next .
U.S. R OBOTICS M ODEM U PDATE W IZARD 57 8. The next screen indicates where the installer will store the files for the Update Wizard. If the indicated location is acceptable, click Next .
U.S. R OBOTICS M ODEM U PDATE W IZARD 58 Operation 1. Click the Windows Start button. Point to Programs . Then point to U.S. Robotics Modem Update Wizard . Finally, click Modem Update Wizard . 2. After you read the “Welcome” screen, click Next . 3.
U.S. R OBOTICS M ODEM U PDATE W IZARD 59 4. The software will now detect any modems installed on your system. When the detection phase finishes, you will see the following screen (the modems shown on your screen may differ). Click the modem you wish to upgrade and then click Next to continue.
U.S. R OBOTICS M ODEM U PDATE W IZARD 60 • Click Other to learn more about how to purchase a U.S. Robotics x2 modem. Upgradable Modems If the modem IS software upgradable, you will see the following screen. Click Dial U.S. Robotics (which should be the default selection) in the pull-down menu.
U.S. R OBOTICS M ODEM U PDATE W IZARD 61 7. The following screen dials the U.S. Robotics Update Server. Click Tone or Pulse dialing as necessary. If you normally dial a prefix (such as 9) to dial out on your phone line, type that prefix before the 1 in the Prefix box.
U.S. R OBOTICS M ODEM U PDATE W IZARD 62 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).
U.S. R OBOTICS M ODEM U PDATE W IZARD 63 9. You will see this screen as the Wizard downloads the file for your modem. 10. When the download is complete, the modem disconnects from the server. The words “Downloading file…” change to “Upgrading …” or “Updating …”, depending on whether you are upgrading or updating your modem.
U.S. R OBOTICS M ODEM U PDATE W IZARD 64 12. You will see a “Congratulations!” screen. Click Details . 13. Click OK once you verify that the process was a success.
U SING M ODEM S TATION 65 What Does Modem Station Do? ♦ Modem Station provides a simple to use interface that makes communicating with your modem even easier.
U SING M ODEM S TATION 66 6. You will be asked whether you wish to install Modem Station. Click Yes . 7. Wait a few moments for the Installation Wizard to load. 8. After reading the information on the “Welcome” screen, click Next . 9. When you see this screen, click Next to accept the default directory or click Browse to change directories.
U SING M ODEM S TATION 67 10. Click Next on the following screen to accept the default program folder. You can place Modem Station in an existing folder by selecting one from the list. 11. When you see the following screen, click Finish to complete the installation.
U SING M ODEM S TATION 68 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).
U SING M ODEM S TATION 69 The main menu gives you direct access to the following options: ♦ DETECT NEW MODEMS ♦ TERMINAL ♦ MODEM CONFIGURATOR ♦ ABOUT ♦ CONTACT/SUPPORT DETECT NEW MODEMS This option detects US Robotics modems installed on your system and shows what COM port they are using.
U SING M ODEM S TATION 70 CONTACT/SUPPORT This option details how to get in touch with U.S. Robotics. TIP: For your convenience, we provide many on-line support avenues.
U SING M ODEM S TATION 71 2. Click Scan to have Modem Station check for installed modems. This may take a few moments. 3. When the scan finishes, you will see the following display. Your display may differ depending on the type and number of modems installed.
U SING M ODEM S TATION 72 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.
U SING M ODEM S TATION 73 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.
U SING M ODEM S TATION 74 modem. We will discuss port speed settings in detail later in this section. Terminal includes a basic auto dialer. To have Terminal dial a number for you, click Dial to bring up the “Dial” screen.
U SING M ODEM S TATION 75 The Modem Configurator menu gives you access to the following options: ♦ DATA CONTROL ♦ CONNECTION CONTROL ♦ MODEM TO COMPUTER ♦ CONNECTION RATES ♦ DIALING/ANSWERING ♦ STORED NUMBERS ♦ RESTORE DEFAULTS ♦ EXIT Data Control This is the “Data Control” screen.
U SING M ODEM S TATION 76 Once you have entered the Data Control settings, click Save to Modem . This stores the settings so that you do not have to re-enter them. This screen also displays the default DIP switch settings. TECHNICAL STUFF: DIP switches are tiny switches that control a few basic functions on some external modems.
U SING M ODEM S TATION 77 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.
U SING M ODEM S TATION 78 If you look in the upper left hand corner of the display, you will see the commands currently in use. The “Modem to Computer” screen allows you to configure the following.
U SING M ODEM S TATION 79 CONNECTION RATES The “Connection Rates” screen allows you to configure modem speeds and protocols. WARNING! Use caution when changing connection settings. Improper settings may cause your modem to function incorrectly, disconnect, or fail to connect at all.
U SING M ODEM S TATION 80 DIALING/ANSWERING The next screen allows you to adjust how your modem initiates and receives calls. Using this screen, you can configure the following dial settings: ♦ WAIT.
U SING M ODEM S TATION 81 To store a number in your modem’s memory, simply click in one of the entry boxes. Type in the phone number exactly as you would dial it. NOTE: Position Zero has a special feature. You can set your modem to automatically dial this number when your computer is turned on or when it is reset.
U SING M ODEM S TATION 82 available from many of the screens within Modem Station. When you click Restore Defaults , you will see a confirmation screen asking if you are sure you want to restore defaults. Click OK to proceed. TIP: Restore Defaults will set your modem back to factory specifications.
U SING M ODEM S TATION 83 ♦ 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.
U SING M ODEM S TATION 84 The “Product” screen displays the make and model of your modem. It is the equivalent of the ATI3 command. Your modem is able to store two configurations or “profiles.” Only one can be active at any time. To see information about the profile in use, click Active Profile to bring up the next screen.
U SING M ODEM S TATION 85 The two lines below the connection settings are the advanced commands currently in use. Below them is a display of the contents of the ‘S-Registers’ for your modem. These registers are special programmable areas of your modem’s memory.
U SING M ODEM S TATION 86 The “Configuration” screen displays the following information about your modem. • Product Type displays the information relating to the make and model of your modem. • Options displays the protocols available to your modem.
U SING M ODEM S TATION 87 • DAA Country displays the countries your modem is designed for. This is important because phone systems and telecommunications laws vary from country to country. Click Link Diagnostics to bring up the “Link Diagnostics” screen.
U SING M ODEM S TATION 88 The rest of the screen contains information about CRC errors, Block Errors ( Blers), resent data, and other data. This information is very important if you experience problems transmitting or receiving data or if you suspect problems with your phone service.
T ROUBLESHOOTING AND O NLINE H ELP R ESOURCES 89 PROBLEM DIAGNOSIS POSSIBLE SOLUTION The computer or software will not recognize the modem. Your modem might not be turned on. You may not be entering modem commands in the proper manner while in terminal mode.
T ROUBLESHOOTING AND O NLINE H ELP R ESOURCES 90 PROBLEM DIAGNOSIS POSSIBLE SOLUTION The computer or software will not recognize the modem (cont.). The modem displays double characters on your monitor. The modem won’t go off hook to dial or doesn’t answer the phone.
T ROUBLESHOOTING AND O NLINE H ELP R ESOURCES 91 PROBLEM DIAGNOSIS POSSIBLE SOLUTION The modem won’t go off hook to dial or doesn’t answer the phone (cont.) Both modems exchange carrier signals but fail to establish a link. Your 33.6 kbps modem cannot achieve a 33.
T ROUBLESHOOTING AND O NLINE H ELP R ESOURCES 92 PROBLEM DIAGNOSIS POSSIBLE SOLUTION Your modem won’t connect at 2400 bps with a 2400 bps modem. Your screen keeps displaying random garbage characters. The modem you’re trying to connect with could be an older model that doesn’t support error control.
T ROUBLESHOOTING AND O NLINE H ELP R ESOURCES 93 PROBLEM DIAGNOSIS POSSIBLE SOLUTION Your communications software is reporting many cyclic redundancy check (CRC) errors and low characters per second (CPS). You may have a bad phone line. Optimum flow control settings may not be enabled on your modem.
T ROUBLESHOOTING AND O NLINE H ELP R ESOURCES 94 PROBLEM DIAGNOSIS POSSIBLE SOLUTION Your communications software is reporting many cyclic redundancy check (CRC) errors and low characters per second (CPS) (cont.). Errors are constantly occurring in your V.
T ROUBLESHOOTING AND O NLINE H ELP R ESOURCES 95 When Plug and Play Fails If you have been directed to this section, your Plug and Play installation was not successful. Try the following possible solutions: 1. Click Windows 95 Start and click Shut Down .
T ROUBLESHOOTING AND O NLINE H ELP R ESOURCES 96 reading to learn about our support options. Online Help Resources Connecting to the 3Com BBS To connect to the 3Com Bulletin Board System, follow these steps: 1. Start the RapidComm Voice program. The software settings for the BBS are: ANSI terminal emulation Data Bits: 8 Parity: None Stop Bits: 1 2.
T ROUBLESHOOTING AND O NLINE H ELP R ESOURCES 97 The preceding screen shot is what the introduction screen of the 3Com BBS will look like. The BBS gives you access to customer and technical support documents and the BBS library which contains hundreds of helpful files and tips to help simplify using your modem.
T ROUBLESHOOTING AND O NLINE H ELP R ESOURCES 98 3. Type the name of the file you wish to receive. You have three manual formats from which to choose: • VOICE336.EXE—The guide in a self- extracting Word for Windows v6.0 format. • VOICE336.PDF—The guide in .
T ROUBLESHOOTING AND O NLINE H ELP R ESOURCES 99 Internet FTP Provides free library containing the same files as the BBS site. FTP to ftp.usr.com. Internet on Demand Provides automatic technical support through a library containing product information, quick reference cards, and installation help.
T ROUBLESHOOTING AND O NLINE H ELP R ESOURCES 100 call. In order to save both time and expense, you should do the following before calling: 1. Click the Windows 95 Start button. 2. Point to Programs and then click RapidComm Voice . (If you have not installed RapidComm Voice, see the section title “Software Installation and Testing” on page 33.
T ROUBLESHOOTING AND O NLINE H ELP R ESOURCES 101 more efficient and time-saving than returning the modem to U.S. Robotics. • If your dealer can't help you, contact 3Com Customer Support.
T ROUBLESHOOTING AND O NLINE H ELP R ESOURCES 102 RapidComm Troubleshooting Tips PROBLEM: The lights in the RapidComm Voice software’s modem light monitor do not correspond to the actual lights on an external modem. DIAGNOSIS: Under certain circumstances, the modem light monitor does not correctly report the activity of the modem.
G LOSSARY 103 Cross references are printed in boldface . Cross references with items in the Command Summary, found in the Technical Quick Reference (Section D), are printed in italics.
G LOSSARY 104 auto answer Sets the modem to pick up the phone line when it detects a certain number of rings. See S-register S0 in the “Technical Quick Reference.
G LOSSARY 105 carrier The basic signal altered or modulated by the modem in order to carry information. character A representation, coded in binary digits , of a letter, number, or other symbol. characters per second (CPS) A data transfer rate generally estimated from the bit rate and the character length.
G LOSSARY 106 data mode Mode used by a modem when sending and receiving data files. DCE Data Communications (or Circuit-Terminating) Equipment, such as dial-up modems that establish and control the data link via the telephone network. default Any setting assumed, at startup or reset, by the computer's software and attached devices.
G LOSSARY 107 Electronic Industries Association (EIA) Group which defines electronic standards in the U.S. error control Various techniques that check the reliability of characters ( parity ) or blocks of data. V.42 and MNP error-control protocols use error detection ( CRC ) and retransmission of flawed frames ( ARQ ).
G LOSSARY 108 Hz Hertz, a frequency measurement unit used internationally to indicate cycles per second. ITU-T An international organization that defines standards for telegraphic and telephone equipment. For example, the Bell 212A standard for 1200-bps communication in North America is observed internationally as ITU-T V.
G LOSSARY 109 online fall back/fall forward A feature that allows high-speed, error-control modems to monitor line quality and fall back to the next lower speed in a defined range if line quality diminishes. As line conditions improve, the modems switch up to the next higher speed.
G LOSSARY 110 ROM Read Only Memory. Permanent memory, not user- programmable. serial transmission The consecutive flow of data in a single channel. Compare to parallel transmissions where data flows simultaneously in multiple channels.
G LOSSARY 111 V.22 bis An ITU-T standard for modem communications at 2400 bps. The standard includes an automatic link negotiation fallback to 1200 bps and compatibility with Bell 212A/V.22 modems. V.27 ter An ITU-T standard for facsimile operations that specifies modulation at 4800 bps, with fallback to 2400 bps.
G LOSSARY 112 Xmodem The first of a family of error control software protocols used to transfer files between modems. These protocols are in the public domain and are available from many bulletin board services. XON/XOFF Standard ASCII control characters used to tell an intelligent device to stop/resume transmitting data.
T ECHNICAL Q UICK R EFERENCE 113 This section includes information about: • AT Command Summary • S-Registers.
T ECHNICAL Q UICK R EFERENCE 114 AT 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.
T ECHNICAL Q UICK R EFERENCE 115 Command Set $ Use in conjunction with D, S, or & commands (or just AT) to display a basic command list; online help. A Manual Answer: goes off hook in answer mode. Pressing any key aborts the operations. A/ Re-executes the last issued command.
T ECHNICAL Q UICK R EFERENCE 116 Sn Dials the phone number string stored in NVRAM at position n (n = 0 − 3). Phone numbers are stored with the & Zn=s command. T Tone dial , (Comma) Pause, See S8 definition; which it’s linked to. ; (Semicolon) Return to Command mode after dialing.
T ECHNICAL Q UICK R EFERENCE 117 F n Sets online local echo of transmitted data ON/OFF. F0 Local echo ON. Modem sends a copy of data it sends to the remote system to your screen. F1 Local echo OFF. Receiving system may send a remote echo of data it receives.
T ECHNICAL Q UICK R EFERENCE 118 M n Operates speaker. M0 Speaker always OFF. M1 Speaker ON until CONNECT. M2 Speaker always ON. M3 Speaker ON after dial, until CONNECT. O n Returns online. O0 Returns online. O1 Returns onlin e and retrains. P Sets pulse dial (for phone lines that don’t support touch-tone dialing).
T ECHNICAL Q UICK R EFERENCE 119 X n Sets result code displayed. Default is X4. Xn Setting Result Codes X0 X1 X2 X3 X4 0/OK ••••• 1/CONNECT ••••• 2/RING ••••• 3/NO CARRIE.
T ECHNICAL Q UICK R EFERENCE 120 X n (continued) Xn Result Codes (cont.) X0 X1 X2 X3 X4 Adaptive Dialing ••• Wait for 2nd Dial Tone (W) • • Wait for Answer (@) • • Fast Dial • • *Req.
T ECHNICAL Q UICK R EFERENCE 121 Y n Selects power-on/reset default configuration. Y0 Default is profile 0 setting in NVRAM Y1 Default is profile 1 setting in NVRAM Z Resets modem.
T ECHNICAL Q UICK R EFERENCE 122 &A3 Protocol indicators added LAPM/MNP/NONE (error control) and V42bis/MNP5 (data compression) & B n Manages mod em’s serial port rate.
T ECHNICAL Q UICK R EFERENCE 123 & G n Sets Guard Tone. &G0 No guard tone, U.S. and Canada &G1 550 Hz guard tone, some European countries, requires B0 setting. &G2 1800 Hz guard tone, U.K., requires B0 setting. & H n Sets Transmit Data (TD) flow control (see also & R n ).
T ECHNICAL Q UICK R EFERENCE 124 &K3 MNP5 compression disabled & M n Sets Error Control (ARQ) for connections at 1200 bps and higher. &M0 Normal mode, error control disabled &M1 Reserved &M2 Reserved &M3 Reserved &M4 Normal/ARQ &M5 ARQ mode & N n Sets connect speed.
T ECHNICAL Q UICK R EFERENCE 125 & P n Sets pulse (rotary) dial make/break ratio. &P0 U.S./Canada ratio, 39%/61% &P1 U.K. ratio, 33%/67% & R n Sets Receive Data (RD) hardware flow control, Request to Send (RTS) (see also & H n ) .
T ECHNICAL Q UICK R EFERENCE 126 &T8 Analog Loopback with self-test and error detector & U n Sets floor connect speed when & U n is set greater than 0.
T ECHNICAL Q UICK R EFERENCE 127 &Y3 Nondestructive, unexpedited & Z n = s Writes phone number string s to NVRAM at position n (n = 0 − 3). & Z n =L Writes last executed dial string to NVRAM at position n (n = 0 − 3). & Z n ? Displays the phone number stored at position n (n = 0 − 3).
T ECHNICAL Q UICK R EFERENCE 128 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 S0 0 Sets the number of rings on which to answer in Auto Answer Mode.
T ECHNICAL Q UICK R EFERENCE 129 Register Default Function S6 2 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. S7 60 Sets the number of seconds the modem waits for a carrier.
T ECHNICAL Q UICK R EFERENCE 130 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.
T ECHNICAL Q UICK R EFERENCE 131 Register Default Function S13 (cont.) Bit Value Result 4 16 At power on/rese t, Auto Dial the number stored in NVRAM at position 0.
T ECHNICAL Q UICK R EFERENCE 132 Register Default Function S15 (cont.) Bit Value Result 6 64 MNP incompatibility. 7 128 Disable V.42 operation. To disable V.42 detect phase, select the total of the values for bits 3 and 7. S16 0 Bit-mapped register setup.
T ECHNICAL Q UICK R EFERENCE 133 Register Default Function S22 17 Stores the ASCII decimal code for the XON character. S23 19 Stores the ASCII decimal code for the XOFF character. S25 20 Sets the duration, in hu ndredths of a second, that DTR must be dropped so that the modem doesn’t interpret a random glitch as a DTR loss.
T ECHNICAL Q UICK R EFERENCE 134 Register Default Function S27 (cont.) Bit Value Result 7 128 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.
T ECHNICAL Q UICK R EFERENCE 135 Register Default Function S32 (cont.) Bit Value Result 2 4 Reserved. 3 8 Disable V.34 modulation. 4 16 Disable V.34+ modulation. 5-7 32-128 Reserved. S33 0 Bit-mapped register setup. To set the register, see the instructions for S13.
T ECHNICAL Q UICK R EFERENCE 136 Register Default Function S34 (cont.) Bit Value Result 2 4 Disable 32S-2D trellis encoding. 3 8 Disable 64S-4D trellis encoding. 4 16 Disable non-linear coding. 5 32 Disable TX level deviation. 6 64 Disable Pre-emphasis.
T ECHNICAL Q UICK R EFERENCE 137 Register Default Function S38 0 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.
R EGULATORY I NFORMATION 138 Manufacturer’s Declaration of Conformity 3Com 7770 North Frontage Road Skokie, Illinois 60077-2690 U.S.A. declares that the product U.
R EGULATORY I NFORMATION 139 This equipment uses the following USOC jacks: RJ-11C. This equipment may not be used on coin service provided by the telephone company.
R EGULATORY I NFORMATION 140 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 telepho.
R EGULATORY I NFORMATION 141 your modem. If you’re using a different communications software program, refer to its manual. Radio and Television Interference This equipment generates and uses radio f.
R EGULATORY I NFORMATION 142 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.
R EGULATORY I NFORMATION 143 equipment to jacks except in precise situations that are spelled out in tariffing arrangements with those companies. Repairs to certified equipment should be coordinated by a representative designated by the supplier.
R EGULATORY I NFORMATION 144 Keating Technologies 25 Royal Crest Court, Suite 200 Markham, ONT L3R 9X4 « AVIS : L'étiquette d'Industrie Canada identifie le matériel homologué.
R EGULATORY I NFORMATION 145 ensemble. Cette précaution est particulièrement importante dans les régions rurales. Avertissement: L'utilisateur ne doit pas tenter de faire ces raccordements lui même; il doit avoir recours à un service d'inspection des installations électriques, ou à un électricien, selon le cas.
R EGULATORY I NFORMATION 146 tampered with, misused, or subjected to abnormal working conditions (including, but not limited to, lightning and water damage). THIS LIMITED WARRANTY DOES NOT GUARANTEE YOU UNINTERRUPTED SERVICE. REPAIR OR REPLACEMENT AS PROVIDED UNDER THIS LIMITED WARRANTY IS THE EXCLUSIVE REMEDY OF THE PURCHASER.
R EGULATORY I NFORMATION 147 exclusion or limitation of incidental or consequential damages, so the above exclusion or limitation may not apply to you. To obtain service under this limited warranty, contact the 3Com Technical Support Department at 847-982-5151 or by mail at 3Com, 7770 N.
INDEX 148 A America Online, U.S. Robotics online support and, 99 analog phone lines, vs. digital, 15, 24 AOL. See America Online, U.S. Robotics online support and B BBS, 3Com, 96-98 C characters per second ( cps) low, errors and, 93-94 COM ports conflicts, 89-90 and Plug and Play installations, 19-20 CompuServe, U.
Index 149 I IRQs, 1, 3-12, 20 conflicts, 89-90 ISA expansion slots, 14, 22 J jumper pins, 10-12, 20 jumper shunts, 10-12, 20 M microphone installation, 16, 24 modem installation Plug and Play, 19-32 With Windows 3.
Index 150 T Technical Support Hotline, 99 terminal mode, 96, 99 Terminate and Stay Resident programs, errors and, 93, 94 troubleshooting, 89-94 RapidComm Voice software, 101-102 TSR. See Terminate and Stay Resident programs U upgrading/updating modems, 53-64 V V.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il 3Com 3C905B è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del 3Com 3C905B - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso 3Com 3C905B imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul 3Com 3C905B ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il 3Com 3C905B, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del 3Com 3C905B.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il 3Com 3C905B. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo 3Com 3C905B insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
