3Com 005687-03 - User Manual Download

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This manual covers installation and operating instructions for the following 3Com modems:

U.S. Robotics 56 Kbps

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internal and external modems

U.S. Robotics is a registered trademark and

Connections

, RapidComm, and x2 are trademarks of

3Com Corporation and its subsidiaries. Windows is a registered trademark of Microsoft Corp.
CompuServe is a registered trademark of CompuServe Inc. America Online is a registered trademark
of America Online Inc. Any other trademarks, trade names, or service marks used in this manual are
the property of their respective owners.

© 1998 3Com Corporation
7770 North Frontage Road
Skokie, IL 60077-2690
All Rights Reserved

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IMPORTANT!

In accordance with the ITU-T standard for 56K transmissions, this modem is capable

of 56 Kbps downloads. However, due to FCC rules which restrict power output of the service
providers’ modems, current download speeds are limited to 53 Kbps. Actual speeds may vary
depending on line conditions and other factors. Uploads from users to server equipment travel at
speeds up to 31.2 Kbps. An analog phone line compatible with the ITU-T 56K standard or x2
technology, and an Internet provider or corporate host site compatible with the ITU-T 56K standard
or x2 technology are necessary for these high-speed downloads.

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Summary of Contents for 005687-03 -

Page 1: ...f their respective owners 1998 3Com Corporation 7770 North Frontage Road Skokie IL 60077 2690 All Rights Reserved IMPORTANT In accordance with the ITU T standard for 56K transmissions this modem is capable of 56 Kbps downloads However due to FCC rules which restrict power output of the service providers modems current download speeds are limited to 53 Kbps Actual speeds may vary depending on line ...

Page 2: ...13 Internal Modem Installation with Windows 95 21 Plug and Play Installation 21 How to Prepare for Plug and Play Installation 22 Check Your System s Resources 22 Find Out Which Version of Windows 95 You Have 23 Check the Jumpers 24 How to Insert the Modem into the Computer 26 How to Move Through the Screens You See When Windows Restarts 31 If You Have Windows 95 Version 950 or 950a 31 If You Have ...

Page 3: ... If You Have Windows 95 Version 950 or 950a 50 If You Have Windows 95 Version 950b 55 Software Installation 60 Starting the Wizard 61 Installing the RapidComm Fax Data Software 62 Installing Other Fax Data Software 64 Type of Modem 64 Initialization String 64 Flow Control 65 UART External Modems Only 65 Using Modem Station 66 What Does Modem Station Do 66 Why Modem Station 66 Installing Modem Stat...

Page 4: ...es 90 Problems and Solutions 90 Online Help Resources 105 Are You Still Having Problems 108 If You Need to Return the Modem to Us for Repair 109 Glossary 110 Regulatory Information 124 Manufacturer s Declaration of Conformity 124 Caution to the User 125 IC Canada 125 UL Listing CUL Listing 125 Connecting to the Telephone Company 126 Fax Branding 126 Radio and Television Interference 127 For Canadi...

Page 5: ...ology or x2 technology This modem will give you the most compatibility with high speed downloads from service providers that offer the ITU 56K standard technology or x2 technology to their customers 3Com is working with providers everywhere to quickly upgrade their service to the ITU 56K standard Capable of receiving up to 56 Kbps and sending up to 31 2 Kbps Due to FCC regulations receiving speeds...

Page 6: ...ards EIA 578 Class 1 FAX EIA 592 Class 2 0 FAX Front Channel Link Rates 28000 29333 30666 32000 33333 34666 36000 37333 38666 40000 41333 42666 44000 45333 46666 48000 49333 50666 52000 53333 54666 56000 57333 Back Channel Link Rates 4800 7200 9600 12000 14400 16800 19200 21600 24000 26400 28800 31200 33600 V 34 Link Rates 4800 7200 9600 12000 14400 16800 19200 21600 24000 26400 28800 31200 33600 ...

Page 7: ... a special connection through which they can communicate with the computer For some devices this connection is called a communications or COM port Most computers have 1 or 2 COM ports but they can have up to 4 Although internal modems do not connect to COM ports directly they do require a COM port setting which is determined by the setting on the modem s COM jumper pins Each COM port uses an inter...

Page 8: ...nd should not share IRQs When accessories try to share settings they will either not work properly or not work at all 3Com has set your modem to a default Plug and Play setting geared towards Windows 95 users In this configuration the shunts used to set your modem s COM port and IRQ settings are hanging from single jumper pins and will not affect your modem s settings As a Windows 3 x user you nee...

Page 9: ... the program that determines which COM ports and IRQs are available for use by your modem 3 The screen in the next column appears when ComTest starts If there is a modem in your computer which you are replacing with your new U S Robotics modem go to Testing an Installed Modem on page 7 to determine which COM and IRQ settings the older modem is using If a modem is not currently installed in your co...

Page 10: ...e 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 Write down the displayed settings You ll need to know these settings later Click Next If you do not have a free setting you will see a screen like this ...

Page 11: ... computer you can determine its COM and IRQ settings by selecting the Test an installed modem option Follow the instructions on screen until you see the screen that tells you Testing is complete This screen will also tell you which COM and IRQ settings your present modem is using These are the settings you want to use for your new U S Robotics modem Write the settings down somewhere Shut down Wind...

Page 12: ...ither of these settings While the COM port part of the setting is acceptable ComTest only recommends COM ports that are not being used the IRQ part of the setting is not acceptable When ComTest recommends either COM3 IRQ4 or COM4 IRQ3 the IRQ in the setting is being used by another accessory You could use the suggested IRQ for the modem but you run the risk that the modem and or the other accessor...

Page 13: ...thing plugged into that port find out if you can plug it in somewhere else Any accessory plugged into that port will not work after the port has been disabled Refer to your computer manufacturer s manual to find out how to disable the COM port Then return to this point in this manual to continue After disabling COM2 you can use the COM2 IRQ3 setting Write down COM2 and IRQ3 and go to How to Change...

Page 14: ...both ports are being used you may be able to attach one of the plugged in accessories elsewhere so that you can disable its COM port The accessory will not work once its port is disabled If you ve disabled COM1 you can now use the COM1 IRQ4 setting Go to How to Change the Modem s Settings If you ve disabled COM2 you can now use the COM2 IRQ3 setting Write the setting down somewhere How to Change t...

Page 15: ...INTERNAL MODEM INSTALLATION WITH WINDOWS 3 X 11 modem s jumper pins see the diagram below The jumper shunts will be hanging from single jumper pins as shownto the right ...

Page 16: ...it back and forth as you lift Do not touch any other part of the modem or your computer with the tweezers pliers A shunt needs to be sitting on both jumper pins in order to effectively set the modem to the desired setting 5 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...

Page 17: ... 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 If you ever need to call our customer support department a customer support representative will ask you for the serial number This will help him or her identify your modem ...

Page 18: ...d This can be helpful when you plug things back in later CAUTION To avoid the risk of electric shock make sure your computer and all peripheral devices are turned off and unplugged 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 shoul...

Page 19: ...ur modem ISA slots have black plastic grooves lined with silver metal 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 Be careful not to drop the screw into the computer You will need it later to screw the modem into place ...

Page 20: ...omputers have vertically aligned slots The instructions apply to both styles You need to apply a little pressure to seat the modem properly Sometimes a gentle back and forth motion helps to fit the 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 fast...

Page 21: ... 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 9 Plug one end of the phone cord that came with the modem into the TELCO jack at the rear of the modem Plug the other end of the cord into the wall jack 10 If you want to use a phone through the same phone wall jack as the modem when the modem is no...

Page 22: ...er and turn the computer on 12 Start Windows 13 If you have your modem set to COM1 IRQ4 or COM2 IRQ3 go to Software Installation on page 60 If you have your modem configured to any other setting open Program Manager and double click the Main icon 14 Double click the Control Panel icon 15 Double click the Ports icon ...

Page 23: ...rt for your modem Then click Settings 17 Set the Baud Rate to the highest option and Flow Control to Hardware Then click Advanced 18 In the Interrupt Request Line IRQ box select the IRQ that ComTest recommended 19 Click OK 20 You will see a screen prompting you to restart Windows Click Restart Now ...

Page 24: ...TH WINDOWS 3 X 20 You are now ready to install the Connections CD ROM included with your U S Robotics modem Go to Software Installation on page 60 for instructions on installing the CD and trying out your modem by registering online ...

Page 25: ...nections CD Plus a screwdriver not included Plug and Play Installation With Windows 95 you may be able to simply plug your new modem into your computer power up and be ready to work The operating system should do all the work of recognizing the modem for you This section will guide you through this Plug and Play installation ...

Page 26: ...dem 1 Click the Windows 95 Start button point to Settings and then click Control Panel 2 Double click the System icon 3 When the System Properties screen appears click the Device Manager tab 4 Double click Computer and the Computer Properties screen appears 5 Select the Interrupt request IRQ option at the top of the screen You will see the IRQs your system is currently using If IRQs 3 4 5 and 7 ar...

Page 27: ...stem information This information is circled in the screen shown to the right The number following the text Microsoft Windows 95 will end with 950 950a or 950b This indicates your version of Windows 95 4 Write this number down for later reference Write it where you wrote your modem s serial number Then you ll have both numbers on hand if you ever have to call technical support 5 Click OK ...

Page 28: ...ts 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 When doing a Plug and Play installation the jumper shunts should be placed so that they are hanging from single jumper pins rather than on pairs of pins Your modem s jumper shunts should already be in this Plug and Play configuration If they are...

Page 29: ... WINDOWS 95 25 NOTE If you need to move the shunts grasp them with a tweezers or a needle nosed pliers DO NOT grasp too firmly however or you may crush the shunts If a shunt seems stuck try gently rocking it back and forth as you lift ...

Page 30: ...ort representative will ask you for the serial number This will help him or her identify your modem 1 Shut down Windows 2 Turn off your computer and unplug it from the electrical outlet 3 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 This can be helpful when you plug thi...

Page 31: ... your computer manufacturer or review their manual if you need further instructions 5 Find an empty ISA expansion slot that s at least as long as the gold edge of your modem ISA slots are black plastic grooves lined with silver metal 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 Be careful not ...

Page 32: ...he left shows horizontally aligned expansion slots Some computers have vertically aligned slots The instructions apply to both styles You need to apply a little pressure to seat the modem properly Sometimes a gentle back and forth motion helps fit the 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...

Page 33: ...modem If you have a phone plugged into 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 Be sure you know which type of line you have The modem will be damaged if you use a digital phone line 10 Plug one end of the phone cord included with the modem into the...

Page 34: ...one wall jack as the modem when the modem is not in use plug your phone s cord into the modem s PHONE jack NOTE You cannot use the modem and a phone at the same time if they share the same telephone line 12 Plug the power cords cables and peripherals back into the computer and turn the computer on ...

Page 35: ...o the instructions on page 36 If you have Windows 95 version 950 or 950a continue here 1 When Windows 95 restarts it should detect the modem If it does you will see the following screen Click Driver from disk provided by hardware manufacturer Then click OK NOTE If this screen does not appear go to Plug and Play Does Not Detect Your Modem on page 103 ...

Page 36: ...E If your CD ROM drive has a different letter name type that letter instead of D Click OK Windows will load the modem s drivers 3 Once Windows finishes loading the information from the CD ROM 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 37: ...the Modems icon circled in the screen image below 5 In the Modems Properties screen you should see a description for your modem This means the installation was a success NOTE If this screen does not appear go to Plug and Play Does Not Detect Your Modem on page 103 ...

Page 38: ...down the COM port number for your modem Write it where you wrote your modem s serial number and your version of Windows 95 NOTE Your screen may show a different setting than that shown in the screen to the right You will need to know this setting when you install your communications software Click the COM port to highlight it on screen 7 Click More Info ...

Page 39: ...TI7 Options line In the rightmost column of this line your should see V PCM 9 Click OK You are now ready to install the Connections CD ROM included with your U S Robotics modem Go to Software Installation on page 60 for instructions on installing the Connections CD and trying out your modem by registering online ...

Page 40: ... 1 When Windows restarts it should detect the modem and you should see a screen like the one below Insert the Connections CD and click Next NOTE If this screen does not appear go to Plug and Play Does Not Detect Your Modem on page 103 2 When you see the following screen click Finish ...

Page 41: ...ndows finishes loading the information from the CD ROM you should verify that the modem installation was a success When your desktop returns click Start and point to Settings Then click Control Panel 4 Double click the Modems icon circled in the screen below ...

Page 42: ...Detect Your Modem on page 103 6 Next click the Diagnostics tab at the top of the Modems Properties screen If you have not already write down the COM port number for your modem Write it where you wrote your modem s serial number and your version of Windows 95 NOTE Your screen may show a different setting than that shown in the screen on the next page You will need to know this setting when you inst...

Page 43: ...STALLATION WITH WINDOWS 95 39 7 Click the Port and then click More Info 8 When you see screen to the right click the down arrow to move to the ATI7 Options line In the rightmost column of this line your should see V PCM ...

Page 44: ...95 40 9 Click OK You are now ready to install the Connections CD ROM included with your U S Robotics modem Go to Software Installation on page 60 for instructions on installing the Connections CD and trying out your modem by registering online ...

Page 45: ...erial Cable to Buy Before you can begin installation you need to purchase an RS 232 serial modem cable This section will help you to determine which serial modem cable to purchase NOTE Your computer s rear panel may not be identical to the following diagrams However you should look for connectors that match the enlarged portions of the following diagrams If you cannot locate the proper connector r...

Page 46: ...ed a shielded serial modem cable with a 9 pin female to 25 pin male connector also called a DB9 DB25M cable 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 When looking for the serial port label on the back of your computer look for ports labeled COM MODEM RS 232 or SERIAL DO NO...

Page 47: ...of the case and the other end into a phone wall 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 The modem will be damaged if you use a digital phone line 5 If you wish to use your modem and phone through the same phone wall jack plug your phone s cord into t...

Page 48: ...n the front panel 7 Turn on your computer and peripherals 8 Start Windows You are now ready to install the Connections CD ROM included with your U S Robotics modem Go to Software Installation on page 60 for instructions on installing the Connections CD and trying out your modem by registering online ...

Page 49: ...rial Cable to Buy Before you can begin installation you need to purchase an RS 232 serial modem cable This section will help you to determine which serial modem cable to purchase NOTE Your computer s rear panel may not be identical to the following diagrams However you should look for connectors that match the enlarged portions of the following diagrams If you cannot locate the proper connector re...

Page 50: ...like this you need a shielded serial modem cable with a 25 pin female to 25 pin male connector also called a DB25 DB25M cable If your PC s serial connector looks like this you need a shielded serial modem cable with a 9 pin female to 25 pin male connector also called a DB9 DB25M cable ...

Page 51: ...look at the system information under the General tab This information is circled in the screen shown to the right The number following the text Microsoft Windows 95 will end with 950 950a or 950b This indicates your version of Windows 95 3 Write this number down for later reference Write it where you wrote your modem s serial number Then you ll have both numbers on hand if you ever have to call te...

Page 52: ...your computer manufacturer s manual for guidance 3 Plug the power adapter into a standard wall outlet and insert its plug into the power jack on the modem labeled with a power adapter icon on the bottom of the case 4 Plug one end of the phone cord into the TELCO jack labeled with a wall plug icon on the bottom of the case and the other end into a phone wall jack WARNING The phone jack you use must...

Page 53: ...all jack plug your phone s cord into the modem s phone jack labeled with a phone icon on the bottom of the case NOTE You can not use the modem and phone at the same time if they share the same telephone line 6 Turn on your modem the power switch is located on the front panel 7 Turn on your computer and peripherals ...

Page 54: ...o the instructions on page 55 If you have Windows 95 version 950 or 950a continue here 1 When Windows 95 restarts it should detect the modem If it does you will see the following screen Click Driver from disk provided by hardware manufacturer Then click OK NOTE If this screen does not appear go to Plug and Play Does Not Detect Your Modem on page 103 ...

Page 55: ...E If your CD ROM drive has a different letter name type that letter instead of D Click OK Windows will load the modem s drivers 3 Once Windows finishes loading the information from the CD ROM 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 56: ...the Modems icon circled in the screen image below 5 In the Modems Properties screen you should see a description for your modem This means the installation was a success NOTE If this screen does not appear go to Plug and Play Does Not Detect Your Modem on page 103 ...

Page 57: ...down the COM port number for your modem Write it where you wrote your modem s serial number and your version of Windows 95 NOTE Your screen may show a different setting than that shown in the screen to the right You will need to know this setting when you install your communications software Click the COM port to highlight it on screen 7 Click More Info ...

Page 58: ...TI7 Options line In the rightmost column of this line your should see V PCM 9 Click OK You are now ready to install the Connections CD ROM included with your U S Robotics modem Go to Software Installation on page 60 for instructions on installing the Connections CD and trying out your modem by registering online ...

Page 59: ... 1 When Windows restarts it should detect the modem and you should see a screen like the one below Insert the Connections CD and click Next NOTE If this screen does not appear go to Plug and Play Does Not Detect Your Modem on page 103 2 When you see the following screen click Finish ...

Page 60: ...ndows finishes loading the information from the CD ROM you should verify that the modem installation was a success When your desktop returns click Start and point to Settings Then click Control Panel 4 Double click the Modems icon circled in the screen below ...

Page 61: ... not appear go to Plug and Play Does Not Detect Your Modem on page 103 6 Next click the Diagnostics tab at the top of the Modems Properties screen If you have not already write down the COM port number for your modem Write it where you wrote your modem s serial number and your version of Windows 95 NOTE Your screen may show a different setting than that shown in the screen on the next page ...

Page 62: ...5 58 You will need to know this setting when you install your communications software 7 Click More Info 8 When you see this screen click the down arrow to move to the ATI7 Options line In the rightmost column of this line your should see V PCM ...

Page 63: ...95 59 9 Click OK You are now ready to install the Connections CD ROM included with your U S Robotics modem Go to Software Installation on page 60 for instructions on installing the Connections CD and trying out your modem by registering online ...

Page 64: ...uide you through installing the Connections program group and testing your modem by registering online Follow this section s instructions to start the Wizard and then simply follow the Wizard s on screen instructions NOTE The following instructions apply to Windows 3 x and Windows 95 users However only Windows 95 screens are shown ...

Page 65: ...rom 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 Click OK 3 Follow the on screen instructions to run the Wizard ...

Page 66: ...s Installing the RapidComm Fax Data Software The Connections CD contains the RapidComm fax data communications program You can use this program to transfer faxes and data files to remote modems NOTE If you have an older version of RapidComm installed on your system uninstall it before continuing To start the uninstall Windows 3 x users Click on the Uninstall icon in the RapidComm program group Win...

Page 67: ... Start the Connections CD follow the instructions on the previous page 2 On the main Connections menu click the Business Productivity button 3 Click the RapidComm button 4 Follow the on screen instructions to finish the installation The CD also contains an electronic user manual for RapidComm Congratulations you are now ready to start using your U S Robotics modem ...

Page 68: ...elect the type of modem you are using Select a U S Robotics Sportster high speed modem If that selection is not listed pick Courier Dual Standard V 32bis or V 34 KEY POINT Refer to your software manual for the program s installation instructions The software s installation program will ask you questionsaboutthe modemyouareusing Initialization String For hardware flow control a fixed serial port ra...

Page 69: ...ss ENTER Follow the on screen instructions to access the COM port settings panel In this panel you should find the UART chip used Match the UART type listed in MSD with the serial rate listed in the chart below Select this serial rate sometimes called the port rate in any communications software you use Select this If this is your UART serial rate 16550 115 2 or 57 6 kbps 16450 38 4 kbps 8250 19 2...

Page 70: ... Why Modem Station Modem commands can be confusing and difficult to memorize Communications software often requires technical information about your modem You may want to tweak your modem for optimum performance Installing Modem Station If you did not install Modem Station when you first installed the Connections CD please follow these instructions 1 Insert the Connections CD into your CD ROM driv...

Page 71: ...o 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 ...

Page 72: ...fault 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 If this is the first time you ve installed Modem Station you may be asked to restart your computer ...

Page 73: ...access to the following options DETECT NEW MODEMS This option detects US Robotics modems installed on your system and shows what COM port they are using Click this option if you are running Modem Station for the first time if you are changing modems or if you simply need to know what port your modem is using TERMINAL Terminal allows you to send commands directly to your modem and displays the resp...

Page 74: ...m s performance We will discuss Modem Configurator s options in more detail in later sections ABOUT The About option provides copyright and version information CONTACT SUPPORT This option details how to get in touch with 3Com 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 You can download FAQs software and ...

Page 75: ...PC You can scan a specific port s by selecting the checkbox for that port 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 If your modem is installed and configured correctly Modem Station will find the ...

Page 76: ...n or contact the manufacturer of your system for further information 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 This next section details using the Te...

Page 77: ...ll probably want to use a separate full featured Terminal program such as that provided in our RapidComm software On the lower part of the Terminal screen you will see the COM port your modem is currently using To select another modem simply click on the arrow and select that modem s assigned port To the right of the port settings are the port speed settings Port speed is the speed at which your c...

Page 78: ...et an outside line and whether the dialer should wait between dialing that digit and the rest of the number Once you provide this information simply enter the phone number as if you were dialing a telephone Click Dial Now to dial the number You can end a call by clicking Hang Up at the bottom of the screen When you are finished using Terminal click Exit to return to the screen you accessed it from...

Page 79: ...OL SERIAL PORT RATE For information on using these settings please refer to the Glossary at the back of this manual Click Help for quick definitions of the terminology used in this screen In the upper left hand corner of the screen you will see the data control commands currently in use Once you have entered the Data Control settings click Save to Modem This stores the settings so that you do not ...

Page 80: ...P switches these functions are handled by modem commands Click Exit to return to the Modem Configurator menu CONNECTION CONTROL This is where you adjust your modem s connection and transmission settings Click Connection Control to bring up this screen In the upper left hand corner of this screen you will find the current Connection Control settings ...

Page 81: ...ons of this manual TIP On external modems receiving a Data Terminal Ready signal from the PC causes the TR light to light up Click Help for quick definitions of terminology used in this screen Once you have configured your Connection Control settings click Save to Modem to save your settings Using Modem to Computer These settings control how your modem and computer communicate with each other They...

Page 82: ...h 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 For details on using the commands in this screen refer to the Glossary or Technical Quick Reference sections of this manual Click Help to see quick definitions of terminology used in this screen This screen also includes a chart of the ways result codes can be displayed...

Page 83: ...he screen you will see the current connection commands This screen allows you to configure the following settings MODULATIONS V 34 SYMBOL RATES SPEEDS Again once you have selected your settings click Save to Modem to save them When you are finished click Exit to return to the Modem Configurator menu Please refer to the main body of the manual and the Glossary for detailed information about the ter...

Page 84: ...PERATION DIALING METHOD SPEAKER VOLUME STORED NUMBERS The Stored Numbers screen displays the phone numbers currently stored in your modem s memory Use this screen to edit or add numbers stored in the modem s memory 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 Position Zero has a special feature You can set you...

Page 85: ...eady stored in Position 0 If you haven t changed the default typing ATDS0 will automatically dial the 3Com BBS Once you enter the numbers you wish to store click Save to Modem to store them Click Exit to return to the Main menu The last option Restore Defaults resets your modem to factory specifications This option is available from many of the screens within Modem Station TIP Restore Defaults wil...

Page 86: ...nded Information The Extended Information screen provides access to the following information about your modem ROM CHECKSUM PRODUCT ACTIVE PROFILE STORED PROFILE 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 fol...

Page 87: ... 83 modem you are using click Product to bring up the next screen The Product screen displays the make and model of your modem Your modem is able to store two configurations or profiles Only one can be active at any time ...

Page 88: ...rrently 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 They are used to store commands that are too complex to be handled by the standard or AT commands Just below that you will see the last number dialed The next option displays the Stored Profile screen This screen shows the configuration stor...

Page 89: ... fax compatibility Clock Frequency displays the speed of the tiny clock that controls the timing of operations within the modem EPROM displays how much information can be stored in the EPROM or Supervisor chip RAM displays how much memory your modem has for processing commands and internal functions Supervisor Date or EPROM Date displays the version date of the firmware stored in the Supervisor ch...

Page 90: ...t because phone systems and telecommunications laws vary from country to country Click Link Diagnostics to bring up the Link Diagnostics screen The Link Diagnostics screen displays statistics about your last connection This screen is most often used as an aid in diagnosing connection failures but it also can provide information about connection speeds and phone line conditions Modulation displays ...

Page 91: ...ving connection problems go directly to this screen to get this information If you save anything to the modem between the last connection and this screen the modem will not save these settings Only our U S Robotics Winmodems use VxDs or Virtual Device Drivers The Winmodem uses special software called a driver to manage many of the functions handled by hardware in our other modems If you are using ...

Page 92: ...em to the newest code NOTE You can also obtain this software from our BBS 847 982 5092 or from our World Wide Web page http www 3Com com 56k NOTE Complete the instructions in the Software Installation chapter starting on page 60 before installing the Modem Update Wizard NOTE The following instructions apply to Windows 3 x and Windows 95 users However only Windows 95 screens are shown ...

Page 93: ...6 Click the Modem Update Wizard button 7 Follow the on screen instructions to complete the installation 8 When you see the screen below the setup is complete Click OK NOTE For more detailed instructions see our World Wide Web page http www 3Com com 56k Updating Your Modem 1 Click Start Point to Programs Then point to U S Robotics Modem Update Wizard Finally point to the Modem Update Wizard selecti...

Page 94: ...the front panel should be lit An internal modem should turn on automatically when the computer is turned on Diagnosis You may not be entering modem commands in the proper manner Possible Solution Type in all upper case AT or lower case at Diagnosis If you are using an external modem the COM port may not be enabled Possible Solution Refer to your computer s manual for information concerning enablin...

Page 95: ...our modem s jumper pins to these free settings using the diagrams on the right as a guide If no IRQ setting is available you may need to move a device off of an IRQ in order to free it for use by your modem 0 1 SEL COM 1 0 1 SEL COM 3 0 1 SEL COM 4 0 1 SEL COM 2 IRQ 2 3 4 5 7 Also make sure you have the correct COM port and IRQ settings in your software and or in the Windows Device Manager PROBLEM...

Page 96: ...re s terminal mode To turn the local echo setting off in the software refer to its documentation PROBLEM The modem won t go off hook to dial or doesn t answer the phone Diagnosis You may have plugged your modem s phone cord into a digital line Possible Solution Plugging your modem s phone cord into a digital phone line can damage the modem Call your phone company if you are unsure whether or not y...

Page 97: ...d be plugged into the TELCO jack on the modem and the wall phone jack The phone cord should be no longer than 12 feet in length Use the phone cord included in your U S Robotics box if possible Diagnosis The phone jack may have been wired incorrectly Possible Solution Contact the telephone company Ask them to make sure the tip and ring are on the inside pair of wires Diagnosis You may have devices ...

Page 98: ...owing a connection if the modem is functioning properly Diagnosis If you have voice mail your dial tone may be altered when messages are waiting Possible Solution Answer your voice mail to restore your normal dial tone Diagnosis Your software may not have auto answer enabled Possible Solution Enable the auto answer feature In RapidComm s Terminal mode type ATS0 1 and press ENTER NOTE You need to e...

Page 99: ...8479855092 and press ENTER the phone number is the 3Com BBS This string bypasses the dial tone allowing a connection if the modem is functioning properly Diagnosis The phone line might be wired incorrectly Possible Solution Contact the telephone company and ask them to make sure the tip and ring are on the inside pair of wires PROBLEM Your modem cannot achieve a 56K Internet connection Diagnosis Y...

Page 100: ...ompatible with the ITU T standard for 56K and or is x2 compatible You can also run the U S Robotics Line Test utility to determine if your line is compatible To run the test visit http www 3com com 56k PROBLEM Your modem won t connect at 2400 bps with a 2400 bps modem Diagnosis The modem you re trying to connect with could be an older model that doesn t support error control Possible Solution You ...

Page 101: ...modem s settings for word length parity and stop bits Possible Solution Set your modem s word length parity and stop bits the same as the remote modem or BBS you are calling Diagnosis Your software and modem might not be set to the same flow control settings Possible Solution Make sure the software and modem have the same flow control settings hardware RTS CTS and software xon xoff Diagnosis The b...

Page 102: ...Possible Solution Try placing the call again The phone company routes calls differently each time Diagnosis Optimum flow control settings may not be enabled on your modem Possible Solution In terminal mode type AT F1 and press ENTER to set hardware flow control Diagnosis If your communications program is DOS based you re running it under Windows and other software is running conflicts between prog...

Page 103: ...fer protocol Do not use Xmodem if other protocols are available Zmodem is the preferred protocol Diagnosis There may be a Terminate and Stay Resident TSR program such as a screen saver or virus scanner running in the background disrupting data communications Possible Solution Disable any Terminate and Stay Resident TSR programs running in the background If you have software running as a TSR check ...

Page 104: ... ENTER This is an initialization string The standard string for faxing is AT F1S36 0 Diagnosis There may be a Terminate and Stay Resident TSR program such as a screen saver or virus scanner running in the background disrupting data communications Possible Solution Disable any Terminate and Stay Resident TSR programs running in the background If you have software running as a TSR check the software...

Page 105: ...00 Diagnosis You may be trying to fax a compressed file Possible Solution Open the file in the application in which it was created Select RapidComm as the printer and then print the file PROBLEM RapidComm fails to initialize the modem Diagnosis RapidComm s port settings may be incorrect Possible Solution Make sure RapidComm s port settings are correctly set for your modem ...

Page 106: ...tions CD ROM that came with your new modem Otherwise system conflicts may hamper RapidComm s ability to work properly Diagnosis If you are using an external modem the modem might not be turned on Possible Solution Make sure the modem is turned on The power switch is on top of external modems The CS light on the front panel should be lit An internal modem should turn on automatically when the compu...

Page 107: ... was not successful Possible Solution Try the following 1 Click Windows 95 Start and click Shut Down When asked if you wish to shut down your computer click Yes When Windows 95 indicates that it is safe to turn off your computer turn it off and wait 15 seconds Then turn the computer back on Windows 95 may detect your modem upon this restart even if it did not detect the modem during the initial in...

Page 108: ...nknown Devices in the list that appears If you do not see either of these options in the list continue with the next section to learn about our support options If you do see one of these options double click the option If the description that appears matches the modem you are trying to install click the Remove button Click OK when Windows asks if you wish to remove the device Next restart the comp...

Page 109: ...ware settings for our BBS are ANSI terminal emulation Data Bits 8 Parity None Stop Bits 1 2 Put the program in Terminal mode 3 Type ATDS0 the last digit is a zero and press ENTER NOTE ATDS0 the last digit is a zero automatically dials 1 847 982 5092 the 3Com BBS If this is your first time connecting to our BBS you will be asked to enter your name create a password of your choice and to fill out a ...

Page 110: ... 3Com offers a number of other online technical support options Choose any one of the following options for help with and or more information on your new modem 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 ...

Page 111: ...om through America Online Go to the Keyword field and type 3Com to connect to various 3Com resources such as file libraries message boards online customer support and product announcements Customer Support via the Phone Technical questions about 3Com modems can also be answered by technical support specialists NOTE Before calling please have the diagnostic program Modem Station installed on your s...

Page 112: ...en the cost of the call Regular Service 847 982 5151 8 00 am 6 00 pm CST Priority No Hold Service 3Com also staffs its own fee based 900 number for immediate assistance These lines are staffed from 8 a m 6 p m CST Monday through Friday No Hold line 900 555 USR1 For a no hold call a 1 50 per minute charge will appear on your local phone bill You must be 18 or older or have parental permission Servi...

Page 113: ...urn the modem for repair you will receive an SRO Service Repair Order number You must have an SRO number before returning the modem to us Ship the unit postage paid in a strong box made of corrugated cardboard with plenty of packing material DO NOT send the modem back in the original box Send ONLY the modem NOT the power supply manuals CD ROM etc Include your SRO number name and address on the shi...

Page 114: ...lines such as the sound of a voice over the phone line answer mode The mode used by your modem when answering an incoming call from an originating modem The transmit receive frequencies are the reverse of the originating modem which is in originate mode application A computer program designed to perform a specific task or set of tasks Examples include word processing and spreadsheet applications A...

Page 115: ...T dial tone or ATDP dial pulse command followed by the telephone number Auto dial is used to dial voice numbers See command Dn baud rate A term used to measure the speed of an analog transmission from one point to another Although not technically accurate baud rate is commonly used to mean bit rate binary digit A 0 or 1 reflecting the use of the binary numbering system Used because the computer re...

Page 116: ...B is equal to 655 360 bytes or characters 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 For example at 2400 bps 8 bit characters with start stop bits for a total ...

Page 117: ...ed CRC code and responds with either a positive or negative acknowledgment data communications The transmission or sharing of data between computers via an electronic medium data compression table A table containing values assigned for each character during a call under MNP5 data compression Default values in the table are continually altered and built during each call The longer the table the mor...

Page 118: ...rm used for compression codes built by the V 42 bis data compression algorithm digital loopback A test that checks the modem s RS 232 interface and the cable that connects the terminal or computer and the modem The modem receives data in the form of digital signals from the computer or terminal and immediately returns the data to the screen for verification digital signals Discrete uniform signals...

Page 119: ... of flawed frames ARQ facsimile A method for transmitting the image on a page from one point to another Commonly referred to as fax fax mode The mode used by a modem to send and receive data in facsimile format See definitions for V 17 V 27ter V 29 flow control A mechanism that compensates for differences in the flow of data into and out of a modem or other device See commands Hn In Rn frame A dat...

Page 120: ...ding computer 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 22 For 2400 bps communication most U S manufacturers observe V 22 bis LAPM Link ...

Page 121: ...ssion of flawed frames modem A device that transmits receives computer data through a communications channel such as radio or telephone lines It also changes signals received from the phone line back to digital signals before passing them to the receiving computer nonvolatile memory NVRAM User programmable random access memory whose data is retained when power is turned off On the U S Robotics mod...

Page 122: ... mode parity A simple error detection method that checks the validity of a transmitted character Character checking has been surpassed by more reliable and efficient forms of error checking including V 42 and MNP 2 4 protocols Either the same type of parity must be used by two communicating computers or both may omit parity protocol A system of rules and procedures governing communications between...

Page 123: ...nsmitter and receiver remote echo A copy of the data received by the remote system returned to the sending system and displayed on the screen Remote echoing is a function of the remote system 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 c...

Page 124: ... mode throughput The amount of actual user data transmitted per second without the overhead of protocol information such as start stop bits or frame headers and trailers Compare with characters per second V 8 The ITU T standard specification that covers the initial handshaking process V 17 fax An ITU T standard for making facsimile connections at 14 400 bps 12 000 bps 9 600 bps 7 200 bps V 21 An I...

Page 125: ...n at 4800 bps with fallback to 2400 bps V 29 An ITU T standard for facsimile operations that specifies modulation at 9600 bps with fallback to 7200 bps V 32 An ITU T standard for modem communications at 9600 bps and 4800 bps V 32 modems fall back to 4800 bps when line quality is impaired V 32 bis An ITU T standard that extends the V 32 connection range 4800 7200 9600 12 000 and 14 400 bps V 32 bis...

Page 126: ...defines a specific data compression scheme for use during V 42 connections 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 Ymodem An error ch...

Page 127: ...odem except it includes no error checking which makes it faster Zmodem Similar to Xmodem and Ymodem except it includes batch transfer the ability to recover from a partially complete transfer an autostart feature and improved efficiency ...

Page 128: ...cept any interference received including interference that may cause undesired operations Part 68 This equipment complies with FCC Rules Part 68 Located on the bottom of the modem is the FCC Registration Number and Ringer Equivalence Number REN You must provide this information to the telephone company if requested The REN is used to determine the number of devices you may legally connect to your ...

Page 129: ...y responsible for compliance could void the user s authority to operate the equipment IC Canada This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the interference causing equipment standard entitled Digital Apparatus ICES 003 of Industry Canada Cet appareil numérique respecte les limites de bruits radioélectriques applicables aux ...

Page 130: ...ced Fax Branding The Telephone Consumer Protection Act of 1991 makes it unlawful for any person to use a computer or other electronic device including fax machines to send any message unless such message clearly contains in a margin at the top or bottom of each transmitted page or on the first page of the transmission the date and time it is sent an identification of the business or other entity o...

Page 131: ...in a residential installation However there is no guarantee that interference will not occur in a particular installation If this device does cause interference to radio or television reception which you can determine by monitoring reception when the modem is installed and when it is removed from the computer try to correct the problem with one or more of the following measures Re orient the recei...

Page 132: ...e operational and safety requirements as prescribed in the appropriate Terminal Equipment Technical Requirements document s The Department does not guarantee the equipment will operate to the user s satisfaction Before installing this equipment users should ensure that it is permissible to be connected to the facilities of the local telecommunications company The equipment must also be installed u...

Page 133: ...al metallic water pipe system if present are connected together This precaution may be particularly important in rural areas CAUTION Do NOT attempt to make such connections yourself Instead contact an electric inspection authority or electrician as appropriate NOTICE The Ringer Equivalence Number REN assigned to each terminal device provides an indication of the maximum number of terminals allowed...

Page 134: ...é en suivant une méthode acceptée de raccordment L abonné ne doit pas oublier qu il est possible que la conformité aux conditions énoncées ci dessus n empêche pas le dégradation du service dans certaines situations Les réparations de matériel homologué doivent être effectuées par un centre d entretien canadien autorisé désigné par le fournissuer La compagnie de télécommunications peut demander à l...

Page 135: ...ivalence de la Sonnerie IES est situé au revers du modem modems externes ou sur le circuit imprimé modems internes Centre de guarantie et de service après vente Keating Technologies 25 Royal Crest Court Suite 200 Markham ONT L3R 9X4 Limited Warranty U S Robotics Access Corp a subsidiary of 3Com Corporation warrants to the original end user purchaser that this product will be free from defects in m...

Page 136: ...LITY OR FITNESS FOR A PARTICULAR USE OR PURPOSE U S ROBOTICS SHALL IN NO EVENT BE LIABLE FOR ANY SPECIAL INDIRECT INCIDENTAL PUNITIVE OR CONSEQUENTIAL DAMAGES OF ANY KIND OR CHARACTER INCLUDING WITHOUT LIMITATION LOSS OF REVENUE OR PROFITS FAILURE TO REALIZE SAVINGS OR OTHER BENEFITS LOSS OF DATA OR USE DAMAGE TO EQUIPMENT AND CLAIMS AGAINST THE PURCHASER BY ANY THIRD PERSON EVEN IF U S ROBOTICS H...

Page 137: ...ed warranty request Once you have received your SRO number take or send the product postage prepaid and insured to the following address 3Com Attn RMA your SRO 6201 W Oakton East Dock Morton Grove IL 60053 Pack the modem in a strong 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 s...

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