US Robotics x2/56K Istruzioni per gli Interventi

This manual covers installation and operating instructions for the following 3Com modems:U.S. Robotics 56 Kbps∗ Voice internal and external modems3Com

INTERNAL MODEM INSTALLATION WITH WINDOWS 3.X6Each COM port uses an interrupt request(IRQ). An accessory uses an IRQ to get theattention of your comput

GLOSSARY96modemA device that transmits/receives computer datathrough a communications channel such asradio or telephone lines. It also changes signals

GLOSSARY97parityA simple error-detection method that checksthe validity of a transmitted character.Character checking has been surpassed bymore reliab

GLOSSARY98ROMRead Only Memory. Permanent memory, notuser-programmable.serial transmissionThe consecutive flow of data in a singlechannel. Compare to p

GLOSSARY99V.8The ITU-T standard specification that coversthe initial handshaking process.V.17 faxAn ITU-T standard for making facsimileconnections at

GLOSSARY100V.32An ITU-T standard for modemcommunications at 9600 bps and 4800 bps.V.32 modems fall back to 4800 bps when linequality is impaired.V.32

GLOSSARY101XmodemThe first of a family of error control softwareprotocols used to transfer files betweenmodems. These protocols are in the publicdomai

REGULATORY INFORMATION AND LIMITED WARRANTY102Manufacturer’s Declaration ofConformity3Com Corporation7770 North Frontage RoadSkokie, Illinois 60077-26

BEFORE YOU BEGIN (WINDOWS 95 USERS)103This equipment uses the following USOCjacks: RJ11C.This equipment may not be used on coinservice provided by the

BEFORE YOU BEGIN (WINDOWS 95 USERS)104Connecting to the Telephone CompanyIt is not necessary to notify the telephonecompany before installing the mode

BEFORE YOU BEGIN (WINDOWS 95 USERS)105Radio and Television InterferenceThis equipment generates and uses radiofrequency energy and if not installed an

INTERNAL MODEM INSTALLATION WITH WINDOWS 3.X7 NOTE: Some communicationssoftware programs require a particularsetting for your modem (the RapidCommsof

BEFORE YOU BEGIN (WINDOWS 95 USERS)106Washington, DC 20402In accordance with Part 15 of the FCC rules,the user is cautioned that any changes ormodific

BEFORE YOU BEGIN (WINDOWS 95 USERS)107the supplier. Any repairs or alterations madeby the user to this equipment, or equipmentmalfunctions, may give

BEFORE YOU BEGIN (WINDOWS 95 USERS)108WARRANTY AND REPAIR SERVICECENTER:Keating Technologies25 Royal Crest Court, Suite 200Markham, ONT L3R 9X4AVIS:

BEFORE YOU BEGIN (WINDOWS 95 USERS)109particulièrement importante dans les régionsrurales.Avertissment: L’utilisateur ne doit pas tenterde faire ces r

BEFORE YOU BEGIN (WINDOWS 95 USERS)110Robotics’ option, without charge for eitherparts or labor. This limited warranty shallnot apply if the product

BEFORE YOU BEGIN (WINDOWS 95 USERS)111vary from state to state. Some states do notallow limitations on duration of an impliedwarranty, or the exclusio

INTERNAL MODEM INSTALLATION WITH WINDOWS 3.X84. Click Internal Modem. Then click Next.5. If you have a free setting, you will see ascreen like this.(C

INTERNAL MODEM INSTALLATION WITH WINDOWS 3.X96. When you see this screen, click Finish toexit ComTest.If ComTest recommended COM 1/IRQ 4or COM 2/IRQ 3

INTERNAL MODEM INSTALLATION WITH WINDOWS 3.X10What to Do with ComTest’sRecommendation NOTE: If your communicationssoftware requires a modem setting th

INTERNAL MODEM INSTALLATION WITH WINDOWS 3.X11• Find out how to disable the COM port.• Find out which of the sockets on the backof your computer COM 2

INTERNAL MODEM INSTALLATION WITH WINDOWS 3.X12accessories elsewhere so that you candisable its COM port. The accessory willnot work once its port is d

INTERNAL MODEM INSTALLATION WITH WINDOWS 3.X13 TIP: Grasp the jumper shunts witha tweezers or needle-nosed pliers. DONOT grasp too firmly, as you may

INTERNAL MODEM INSTALLATION WITH WINDOWS 3.X14How to Insert the Modem intothe Computer NOTE: Before installing yourmodem, write its serial number in t

INTERNAL MODEM INSTALLATION WITH WINDOWS 3.X153. Remove the screws from your computer’scover and then remove the cover, as shownin the following diagr

TABLE OF CONTENTSWelcome to 56K Information Access 1Product Features 2Before You Begin (Windows 95 Users) 3Determining Available Resources 3Determinin

INTERNAL MODEM INSTALLATION WITH WINDOWS 3.X165. Holding the modem at each corner, with thegold edge facing the slot, push the modemdown as gently as

INTERNAL MODEM INSTALLATION WITH WINDOWS 3.X17 WARNING: The phone jack youuse must be for an ANALOG phone line(the type found in most homes). Manyoff

INTERNAL MODEM INSTALLATION WITH WINDOWS 3.X1813. Plug the power cords, cables, andperipherals back into the computer and turnthe computer on.14. Star

INTERNAL MODEM INSTALLATION WITH WINDOWS 3.X1918. If it’s not already selected, click the COMport for your modem. Then click Settings.19. Click Advanc

INTERNAL MODEM INSTALLATION WITH WINDOWS 3.X20When Windows restarts, you are ready toinstall the Connections program group andregister your modem onli

INTERNAL MODEM INSTALLATION WITH WINDOWS® 9521You will need these items from yourU.S. Robotics modem box: modem phone cord Connections™

INTERNAL MODEM INSTALLATION WITH WINDOWS 9522How to Prepare for Plug andPlay Installation1. Touch an unpainted metal part of yourcomputer (the back is

INTERNAL MODEM INSTALLATION WITH WINDOWS 9523 NOTE: If you need to move thejumper shunts, grasp them with atweezers or a needle-nosed pliers. DONOT g

INTERNAL MODEM INSTALLATION WITH WINDOWS 95241. Turn off your computer and unplug it fromthe electrical outlet.2. Unplug any peripheral devices (print

INTERNAL MODEM INSTALLATION WITH WINDOWS 95254. Find an empty ISA expansion slot that’s atleast as long as the gold edge of yourmodem. (ISA slots are

TABLE OF CONTENTSSoftware Installation 47Running the Setup Wizard 47Using Connections 48Installing the RapidComm™ Voice Fax/Data/Voice Software 48Ins

INTERNAL MODEM INSTALLATION WITH WINDOWS 95266. Once the modem is in the slot, fasten itfirmly into place using the screw that youremoved in step 4.7.

INTERNAL MODEM INSTALLATION WITH WINDOWS 9527 NOTE: You cannot use the modemand a phone at the same time if theyshare the same telephone line.11. Plug

INTERNAL MODEM INSTALLATION WITH WINDOWS 9528Click Driver from disk provided byhardware manufacturer. Then click OK. NOTE: If this screen does notappe

INTERNAL MODEM INSTALLATION WITH WINDOWS 95293. Once Windows finishes loading theinformation from the CD-ROM, you shouldverify that the modem installa

INTERNAL MODEM INSTALLATION WITH WINDOWS 95305. In the “Modems Properties” screen, youshould see a description of your modem.This means the installati

INTERNAL MODEM INSTALLATION WITH WINDOWS 9531You are now ready to install the Connectionsprogram group and register your modemonline. Turn to “Softwar

INTERNAL MODEM INSTALLATION WITH WINDOWS 9532 NOTE: If this screen does notappear, go to “If Plug and Play Does NotDetect Your Modem” on page 83.2. Wh

INTERNAL MODEM INSTALLATION WITH WINDOWS 95334. Double-click the Modems icon (circled inthe screen image below).5. In the “Modems Properties” screen,

INTERNAL MODEM INSTALLATION WITH WINDOWS 9534 NOTE: If you do not see yourmodem listed in the precedingscreen, the Plug and Play installationwas unsuc

EXTERNAL MODEM INSTALLATION WITH WINDOWS 9535You’ll need these items from your U.S.Robotics box:modem phone cord Connections CD power adapterPlus:RS

TABLE OF CONTENTSU.S. Robotics Modem Update Wizard 74Installing the Wizard 74Updating Your Modem 75Troubleshooting and Online Help Resources 76RapidC

EXTERNAL MODEM INSTALLATION WITH WINDOWS 9536 NOTE: Your computer’s rear panelmay not be identical to the followingdiagrams. However, you should look

EXTERNAL MODEM INSTALLATION WITH WINDOWS 9537Connecting the Modem to theComputer1. Turn off your computer and any attachedperipherals.2. Connect the s

EXTERNAL MODEM INSTALLATION WITH WINDOWS 9538If you wish to use your modem and phonethrough the same phone wall jack, plug yourphone's cord into

EXTERNAL MODEM INSTALLATION WITH WINDOWS 9539Installing the Modem Drivers NOTE: If you wrote “950b” onpage 4 of this User’s Guide, go to“Installing Mo

EXTERNAL MODEM INSTALLATION WITH WINDOWS 95402. When you see this screen, insert theConnections CD into your CD-ROMdrive and type D:\ to replace the A

EXTERNAL MODEM INSTALLATION WITH WINDOWS 95414. Double-click the Modems icon (circled inthe screen image below).5. In the “Modems Properties” screen,

EXTERNAL MODEM INSTALLATION WITH WINDOWS 95426. Next, click the Diagnostics tab at the topof the “Modems Properties” screen. Writedown the COM setting

EXTERNAL MODEM INSTALLATION WITH WINDOWS 9543Installing Modem Drivers withWindows 95 Version 950b1. When Windows restarts, it should detectthe modem.

EXTERNAL MODEM INSTALLATION WITH WINDOWS 95443. Now you should verify that the modeminstallation was a success. When yourdesktop returns, click the Wi

EXTERNAL MODEM INSTALLATION WITH WINDOWS 95455. In the “Modems Properties” screen, youshould see your modem listed.This means the installation was a s

WELCOME TO 56K* INFORMATION ACCESS1The International Telecommunications Union(ITU) determines the technical protocolscommunications devices must use t

EXTERNAL MODEM INSTALLATION WITH WINDOWS 9546You are now ready to install the Connectionsprogram group and register your modemonline. Turn to “Softwar

SOFTWARE INSTALLATION47This section explains running theU.S. Robotics Setup Wizard on theConnections™ CD.The Wizard will guide you through installing

SOFTWARE INSTALLATION482. In the text box, type D:\setup.exe.(If your CD-ROM drive has a letter nameother than D, type that letter in place of D.)Then

SOFTWARE INSTALLATION49The Connections CD contains theRapidComm Voice fax/data/voicecommunications program. You can use thissoftware to transfer faxes

INSTALLING OTHER FAX/DATA SOFTWARE50You can use fax/data/voice software other thanRapidComm Voice (the fax/data/voicesoftware on the Connections CD).

INSTALLING OTHER FAX/DATA SOFTWARE51Flow Control• For hardware flow control (highlyrecommended), select RTS/CTS.• For software flow control, selectXON

USING MODEM STATION52What Does Modem Station Do?♦ Modem Station provides a simple to useinterface that makes communicating withyour modem easy.♦ Modem

USING MODEM STATION536. You will be asked whether you wish toinstall Modem Station. Click Yes.7. Wait a few moments for the InstallationWizard to load

USING MODEM STATION5410. Click Next on the following screen toaccept the default program folder. You canplace Modem Station in an existing folderby se

USING MODEM STATION55Starting Modem Station1. If you did not start Modem Station from theSetup program, please start it now.2. Click Windows Start but

PRODUCT FEATURES2Modulation Schemes56K ITU-T standardx2™ technologyITU-T V.34+ITU-T V.34ITU-T V.32bisITU-T V.32ITU-T V.22bisITU-T V.22ITU-T V.23Bell 2

USING MODEM STATION56MODEM CONFIGURATORModem Configurator provides an easy-to-useinterface for entering hard-to-remembercommands. Use Modem Configurat

USING MODEM STATION57Using Detect New Modems1. Click Detect New Modems to bring upthe following screen.The screen consists of four columns, one foreac

USING MODEM STATION58modem and display make and modelinformation under the assigned port. Allcurrently active ports should display “PortOK” under the

USING MODEM STATION59you to dial into Bulletin Boards, listing services,and other online services. NOTE: Modem Station’sTerminal window is providedpri

USING MODEM STATION60modem. We will discuss port speed settings indetail later in this section.Terminal includes a basic auto dialer.To have Terminal

USING MODEM STATION61The Modem Configurator menu gives youaccess to the following options:Data ControlThis is the “Data Control” screen.The “Data Cont

USING MODEM STATION62 TECHNICAL STUFF: DIPswitches are tiny switches thatcontrol a few basic functions onsome external modems. Onmodems without DIP s

USING MODEM STATION63For detailed information about these settings,refer to the “Glossary” or the “Technical QuickReference” sections of this manual.

USING MODEM STATION64If you look in the upper left hand corner of thedisplay, you will see the commands currently inuse.The “Modem to Computer” screen

USING MODEM STATION65CONNECTION RATESThe “Connection Rates” screen allows you toconfigure modem speeds and protocols. WARNING! Use cautionwhen changi

BEFORE YOU BEGIN (WINDOWS® 95 USERS)3Determining AvailableResourcesYour U.S. Robotics® Voice modem is a Plugand Play device. Windows® 95 canautomatica

USING MODEM STATION66DIALING/ANSWERINGThe next screen allows you to adjust how yourmodem initiates and receives calls.Using this screen, you can confi

USING MODEM STATION67number when your computer is turned on orwhen it is reset. This is very useful if you areusing your modem with a “dumb terminal”

USING MODEM STATION68what you’ll see (and why it is important to you)as fully as possible.There are a series of commands used to obtaindetailed inform

USING MODEM STATION69modem you are using, click Product to bringup the next screen.The “Product” screen displays the make andmodel of your modem.Your

USING MODEM STATION70The two lines below the connection settings arethe advanced commands currently in use.Below them is a display of the contents of

USING MODEM STATION71• Options displays the protocols available toyour modem.• Fax Options displays your faxcompatibility.• Clock Frequency displays t

USING MODEM STATION72The “Link Diagnostics” screen displaysstatistics about your last connection. Thisscreen is most often used as an aid indiagnosing

USING MODEM STATION73last connection and this screen, the modem willnot save these settings.Only our U.S. Robotics Winmodems useVxDs, or Virtual Devic

U.S. ROBOTICS MODEM UPDATE WIZARD74The Connections CD-ROM includes theU.S. Robotics Modem Update Wizard. Thissoftware is designed to quickly update y

U.S. ROBOTICS MODEM UPDATE WIZARD755. From the main Connections menu, click theCustomer Support button.6. Click the Modem Update Wizard button.7. Foll

BEFORE YOU BEGIN (WINDOWS 95 USERS)4Determining Your Version ofWindows 95Follow these steps to determine your versionof Windows 95. This information w

TROUBLESHOOTING AND ONLINE HELP RESOURCES76PROBLEM DIAGNOSIS POSSIBLE SOLUTIONThe computer or software willnot recognize the modem.If you are using an

TROUBLESHOOTING AND ONLINE HELP RESOURCES77PROBLEM DIAGNOSIS POSSIBLE SOLUTIONThe modem displays doublecharacters on your monitor.The modem won’t go o

TROUBLESHOOTING AND ONLINE HELP RESOURCES78PROBLEM DIAGNOSIS POSSIBLE SOLUTIONThe modem won’t go off hookto dial or doesn’t answer thephone.Both modem

TROUBLESHOOTING AND ONLINE HELP RESOURCES79PROBLEM DIAGNOSIS POSSIBLE SOLUTIONYour modem won’t connect at2400 bps with a 2400 bpsmodem.Your screen kee

TROUBLESHOOTING AND ONLINE HELP RESOURCES80PROBLEM DIAGNOSIS POSSIBLE SOLUTIONYour communicationssoftware is reporting manycyclic redundancy check(CRC

TROUBLESHOOTING AND ONLINE HELP RESOURCES81PROBLEM DIAGNOSIS POSSIBLE SOLUTIONYour communicationssoftware is reporting manycyclic redundancy checkerro

TROUBLESHOOTING AND ONLINE HELP RESOURCES82RapidComm Voice SoftwareTroubleshooting TipsPROBLEM: The lights in the RapidCommVoice software’s modem lig

TROUBLESHOOTING AND ONLINE HELP RESOURCES83If Plug and Play Does Not DetectYour Modem1. Click Windows 95 Start and click ShutDown. When asked if you w

TROUBLESHOOTING AND ONLINE HELP RESOURCES84Online Help ResourcesConnecting to the 3Com BBSTo connect to the 3Com Bulletin Board System,follow these st

TROUBLESHOOTING AND ONLINE HELP RESOURCES85The BBS gives you access to customer andtechnical support documents and the BBS librarywhich contains hundr

INTERNAL MODEM INSTALLATION WITH WINDOWS®3.X5You will need these items from yourU.S. Robotics® modem box: modem phone cord Connection

TROUBLESHOOTING AND ONLINE HELP RESOURCES86America OnlineGo to the Keyword field and type 3COM toconnect to various 3Com resources, such as filelibrar

TROUBLESHOOTING AND ONLINE HELP RESOURCES87Are You Still Having Problems?• Review this manual.• Call or visit your modem dealer. They may beable to as

GLOSSARY88Cross references are printed in boldface. Crossreferences to items also found in the “TechnicalQuick Reference” chapter are printed in itali

GLOSSARY89ASCIIAmerican Standard Code for InformationInterchange. A code used to represent letters,numbers, and special characters such as $, !,and /.

GLOSSARY90bit rateAlso referred to as transmission rate. Thenumber of binary digits, or bits, transmittedper second (bps). Communications channelsusin

GLOSSARY91characters per second (CPS)A data transfer rate generally estimated fromthe bit rate and the character length. Forexample, at 2400 bps, 8-bi

GLOSSARY92data compression tableA table containing values assigned for eachcharacter during a call under MNP5 datacompression. Default values in the t

GLOSSARY93digital loopbackA test that checks the modem's RS-232interface and the cable that connects theterminal or computer and the modem. Themo

GLOSSARY94fax modeThe mode used by a modem to send andreceive data in facsimile format. Seedefinitions for V.17, V.27ter, V.29.flow controlA mechanism

GLOSSARY95ITU-TAn international organization that definesstandards for telegraphic and telephoneequipment. For example, the Bell 212Astandard for 1200