Multitech MT5634MU User Manual Download

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Model MT5634MU

Portable USB Modem

User Guide

Summary of Contents for MT5634MU

Page 1: ...Model MT5634MU Portable USB Modem User Guide ...

Page 2: ...Wizard 5 13 01 D Added info on PhoneTools 3 13 03 Patents This Product is covered by one or more of the following U S Patent Numbers 5 301 274 5 309 562 5 355 365 5 355 653 5 452 289 5 453 986 Other Patents Pending Trademarks MultiMobileUSB Multi Tech and the Multi Tech logo are trademarks of Multi Tech Systems Inc IBM is a trademark of International Business Machines Corporation MNP and Microcom ...

Page 3: ...System 15 USB Connection 15 Line Connection 15 Step 2 Installing the Modem 16 Installation in Windows 2000 16 Installation in Windows ME 19 Installation in Windows 98 24 Installation in Windows 95 27 Removing Your Old Modem from Windows 27 Step 3 Configuring the Modem for Your Country 28 Using the Global Wizard Utility 28 Using AT Commands 28 Step 4 Installing Data Communications Software 29 Refer...

Page 4: ...8 Canadian Limitations Notice 58 EMC Safety and R TTE Directive Compliance 59 New Zealand Telecom Warning Notice 59 International Modem Restrictions 59 Appendix B V 90 Support 60 Introduction 60 V 90 Troubleshooting 60 Appendix C Loopback Tests 61 Introduction 61 Local Analog Loopback Test V 54 Loop 3 61 Appendix D Warranty Service and Technical Support 64 Limited Warranty 64 Service 64 Technical ...

Page 5: ...Chapter 1 Introduction and Description ...

Page 6: ...izes dial tones and busy signals for reliable call progress detection The modem can detect AT T calling card tones It also has Caller ID remote configuration and incorporates self resetting lightning protection The MT5634MU is FCC registered for connection without notification to the telephone company The MT5634MU is a full duplex intelligent modem with V 42 error correction V 42bis data compressi...

Page 7: ...urers Online services also allow you to upload and download computer programs data files and updated software such as video and printer drivers Your modem can also connect you to the Internet an international computer network of universities libraries businesses and government agencies Like the commercial online services the Internet provides e mail services public message areas and access to info...

Page 8: ...th fax machines Responds to EIA TIA Class 1 and 2 fax commands enabling it to exchange editable and encrypted faxes with Windows 95 computers Sends and receives faxes from your computer at 14 400 bps 9600 bps 7200 bps 4800 bps 2400 bps or 300 bps Required Equipment In addition to the contents of your modem package you need the following equipment Computer Your modem can only be connected to a comp...

Page 9: ...for more information Surge Protectors and Lightning Your modem has self resetting lightning protection to protect it from electrical spikes on the telephone line During an electrical storm your safest course is to unplug your computer equipment from both the power outlet and the telephone line Front Panel The MT5634MU has 4 LEDs on the front panel indicating status configuration and activity Figur...

Page 10: ...l dial pauses auto answer caller ID EIA extended automode adaptive line probing automatic symbol and carrier frequency during start up retrain and rate renegotiation call status display auto parity and data rate selections keyboard controlled modem options non volatile memory on screen displays for modem option parameters command lines of up to 40 characters each help menus remote configuration Co...

Page 11: ...V 17 TCM 1800 Hz originate answer Transmit Level 11 dBm dial up Frequency Stability 0 01 Receiver Sensitivity 43 dBm under worst case conditions AGC Dynamic Range 43 dB Connectors USB connector one RJ 11 phone jack Cables One RJ 11 phone cable Note Any cables connected to the computer should be shielded to reduce interference Diagnostics Power on self test local analog loop local digital loop remo...

Page 12: ...12 MultMobileUSB User Guide ...

Page 13: ...Chapter 2 Installation ...

Page 14: ...CD Figure 2 1 Unpacking You supply A computer with an unused USB port A nearby telephone line jack Safety Warning Telecom 1 Never install telephone wiring during a lightning storm 2 Never install a telephone jack in wet locations unless the jack is specifically designed for wet locations 3 This product is to be used with UL and cUL listed computers 4 Never touch uninsulated telephone wires or term...

Page 15: ...nections USB Connection Plug the USB cable connector on the modem into a USB port connector on your computer Line Connection Plug one end of the phone cable into the modem s LINE jack and the other end into a phone line wall jack Note The Federal Communications Commission FCC and Industry Canada impose certain restrictions on equipment connected to public telephone systems See Appendix A for more ...

Page 16: ...mputer s USB port and connect the telephone line to your MT5634MU and a telephone wall jack 3 Windows will detect that the new modem is present and indicate that it s in the process of installing Then the Welcome screen of the Found New Hardware Wizard appears Click Next 4 The Install Hardware Device Drivers screen appears indicating that it will install the hardware device drivers Verify that the...

Page 17: ...n will say Insert the manufacturer s installation disk into the drive selected and then click OK Click on the Browse button when prompted to insert a disk into drive A click Cancel Navigate to your computer s CD ROM drive Select the folder DRIVERS WIN 2000 Select the file MDMMTUSB INFand click Open 7 Then the Driver Files Search Results screen appears indicating that Windows has found the proper d...

Page 18: ...ontinue installation Although Multi Tech submits all eligible products to Microsoft for certification the turn around time is subject to many factors Not having a digital signature does not affect product performance in any way 9 A transient Copying Files screen appears briefly indicating that driver files are being copied to your computer s hard drive Then a completion screen appears indicating t...

Page 19: ...detects the modem as a new device Then the installation wizard runs again to install the remaining driver files 1 Power up your Windows ME computer 2 Connect the MT5634MU to your computer s USB port Then connect one end of the provided telephone line cord to your MT5634MU and the other end to a telephone wall jack 3 Windows ME will detect that the new modem is present and launch the Add New Hardwa...

Page 20: ...for new drivers screen uncheck the Removable Media button if necessary and check Specify a location 5 Click the Browse button and navigate to the Windows ME subfolder of the Drivers folder on the MT5634MU Installation CD Then click OK Click Cancel if it prompts you for a floppy disk ...

Page 21: ...sient progress screens will appear while files are being copied After the files have been copied to your PC an Add New Hardware Wizard screen will appear indicating that Windows has finished installing this the first of two drivers Click Finish to complete the installation of this first driver The wizard will close ...

Page 22: ...ware Wizard again asking What would you like to do Choose Specify the location of the driver Advanced and click Next 9 At the next screen the Add New Hardware Wizard Windows will search for new drivers screen uncheck the Removable Media button if necessary and check Specify a location Click Next Click Next ...

Page 23: ...creen will appear Click Next 11 After files have been copied a completion screen will appear Click Finish to complete the installation of this the second driver The wizard will close 12 Remove the MT5634MU Installation CD from the computer s CD drive 13 Test the operation of your modem by registering it online at http www multitech com register ...

Page 24: ...lephone wall jack 3 Windows will detect that the new modem is present and launch the Add New Hardware Wizard dialog box 4 Place the MT5634MU Installation CD into your CD drive and click Next to proceed with the installation 5 The Add New Hardware Wizard dialog box is displayed with the message What do you want Windows to do Verify that the Search for the best driver for your device Recommended opt...

Page 25: ...river Verify that the CD ROM drive option is selected and click Next 7 The Add New Hardware Wizard dialog box is displayed indicating that Windows has found an updated driver for this device and also some other drivers that should work with this device Verify that the Updated driver Recommended option is selected and click Next ...

Page 26: ... your PC the Add New Hardware Wizard dialog box is displayed indicating that Windows has finished installing the driver Click Finish to complete the installation and exit the wizard The TR LED on your modem will light when the installation is complete Remove the CD from the computer Once installation is complete you should test the operation of your new MT5634MU by registering your MT5634MU produc...

Page 27: ...splays the driver name for verification Verify that the correct name is displayed and click Finish to install the driver 5 Windows prompts you to insert the CD You have already inserted the CD so click OK to continue 6 The Copy Files dialog box is displayed In the Copy files from field choose D from the drop down list and click OK 7 When driver installation is finished a completion message will ap...

Page 28: ...ands or with the Global Wizard Both methods are described below Using the Global Wizard Utility The Global Wizard configuration utility is recommended for computers running Windows 95 98 ME 2000 The Global Wizard can configure your modem for a specific country with just a few mouse clicks 1 Insert the MT5634MU Installation CD into the CD ROM drive The Autorun dialog box appears 2 Click Initial Set...

Page 29: ...ions software is designed to send and receive messages about the operation of your modem Multi Tech includes PhoneTools communications software with your modem However the modem will work with most data communications software packages To install PhoneTools insert the Installation CD into the CD ROM drive click on the PhoneTools icon You will be asked to choose your language The software will be l...

Page 30: ...30 MultiMobileUSB User Guide ...

Page 31: ...Chapter 3 AT Commands S Registers and Result Codes ...

Page 32: ... automatically Fortunately communications programs make daily operation of modems effortless by hiding the commands from the user Most users therefore need to use AT commands only when reconfiguring the modem e g to turn autoanswer on or off The format for entering an AT command is ATXn where X is the command and n is the specific value for the command sometimes called the command parameter The va...

Page 33: ...ault 1 Description C0 Transmit carrier always off Not supported C1 Normal transmit carrier switching included for backward compatibility with some software Command Ds Dial Values s dial string phone number and dial modifiers Default none Description Dial telephone number s where s may up to 40 characters long and include the 0 9 A B C and D characters and the L P T V W S comma semicolon and dial s...

Page 34: ...alues n 0 or 1 Default 0 Description H0 Goon hook hangup H1 Go off hook make the phone line busy Command In InformationRequest Values n 0 5 9 11 Default None Description I0 Display default speed and controller firmwareversion I1 Calculate and display ROM checksum e g 12AB I2 Check ROM and verify the checksum displaying OK or ERROR I3 Display default speed and controller firmware version I4 Display...

Page 35: ...pulsed until a T com mand or dial modifier is received Command Qn Result Codes Enable Disable Values n 0 or 1 Default 0 Description Q0 Enable result codes Q1 Disable result codes Q2 Returns an OK for backward compatibility with some software Command Sr n Set Register Value Values r S register number n varies Default None Description Set value of register Sr to value of n where n is entered in deci...

Page 36: ...O DIALTONE and BUSY X6 Extended result codes with NO DIALTONE and BUSY X7 Basic result codes with NO DIALTONE and BUSY Command Yn Long Space Disconnect Values n 0 Default 0 Description Y0 Disable sending or responding to long space break signal on disconnect Y1 Enable sending or responding to long space break signal on disconnect Not supported Command Zn ModemReset Values n 0 or 1 Default None Des...

Page 37: ...o 1800 Hz Note The G command is not used in North America Command Kn Flow Control Selection Values n 0 3 or 4 Defaults 3 Description K0 Disable flow control K3 Enable CTS RTS hardware flow control K4 EnableXON XOFFsoftwareflowcontrol Command Qn AsynchronousCommunicationsMode Values n 0 5 6 8 or 9 Default 5 Description Q0 Asynchronous with data buffering Same as N0 Q5 Error control with data buffer...

Page 38: ...f the factory defaults See also the F command W1 Clears user default settings from nonvolatile memory and causes the factory defaults to be loaded at power on or following the ATZ command Command Yn Select Stored Configuration for Hard Reset Values n 0 Default 0 Description Y0 Select stored configuration 0 on power up For backward compatibility with some software Y1 Notsupported respondsERROR Comm...

Page 39: ...tted data Data mode The modem receives the break from the remote modem K0 Clear data buffers and send break to the computer K1 Same as K0 K2 Send break immediately to the computer K3 Same as K2 K4 Send break to the computer in sequence with the received data K5 Same as K4 Online command mode The modem receives a Bn command from the computer K0 Clear data buffers and send break to the remote modem ...

Page 40: ...s to and passes XON XOFF characters Command Cn Data Calling Tone Values n 0 or 1 Defaults 0 Description C0 Disable V 25 data calling tone to deny remote data fax voice discrimination C1 Enable V 25 data calling tone to allow remote data fax voice discrimination Command A Adaptive Answer Result Code Enable Values n 0 or 1 Defaults 0 Description The A command controls whether the DATA and FAX result...

Page 41: ...Default MTSMODEM Description Enters the remote configuration setup password Command S x StoreSetupPassword Values x password 1 8 characters case sensitive Default MTSMODEM Description Stores a new remote configuration setup password Command AT CR Escape Sequence Values n a Description Puts the modem in command mode and optionally issues a command while remaining online Type AT and up to ten comman...

Page 42: ...1 255 50 Sets the time the modem waits for a carrier signal before aborting a call Also sets the wait for silence time for the dial modifier S8 seconds 0 65 2 Sets the length of a pause caused by a comma character in a dialing command S9 decimal 0 1 127 37 Sets ASCII code for remote configuration escape character S9 0 disables remote configuration S10 100 ms 1 254 20 Sets how long a carrier signal...

Page 43: ... 000 to 56 000 in 2 000 bps increments V 90 provides rates of 28 000 to 56 000 bps in increments of 1 333 bps 0 V 90 disabled 1 V 90 autorate K56flex rates 2 28 000 bps 2 32 000 bps 3 29 333 bps 3 34 000 bps 4 30 666 bps 4 36 000 bps 5 32 000 bps 5 38 000 bps 6 33 333 bps 6 40 000 bps 7 34 666 bps 7 42 000 bps 8 36 000 bps 8 44 000 bps 9 37 333 bps 9 46 000 bps 10 38 666 bps 10 48 000 bps 11 40 00...

Page 44: ...for certain types of connections S48 7 S48 128 LAPM or async Async LAPM or hangup Do not use LAPM MNP or aysnc LAPM MNP or hangup MNP or hangup MNP or async S36 0 2 S36 1 3 S36 4 6 S36 5 7 S89 seconds 0 5 255 10 Sets the length of time in the off line command mode before the modem goes into standby mode A value of zero prevents standby mode a value of 1 4 sets the value to 5 S109 decimal 0 2 1 Set...

Page 45: ...ate 72 CONNECT 36000 Connected at 36000 bps 56K rate 73 CONNECT 38000 Connected at 38000 bps 56K rate 74 CONNECT 40000 Connected at 40000 bps 56K rate 75 CONNECT 42000 Connected at 42000 bps 56K rate 76 CONNECT 44000 Connected at 44000 bps 56K rate 77 CONNECT 46000 Connected at 46000 bps 56K rate 78 CONNECT 48000 Connected at 48000 bps 56K rate 79 CONNECT 50000 Connected at 50000 bps 56K rate 80 C...

Page 46: ...n is enabled EC is replaced by one of the following codes depending on the type of error control connection V42bis V 42 error control LAP M and V 42bis data compression V42 V 42 error control LAP M only MNP5 MNP 4 error control and MNP 5 data compression MNP4 MNP 4 error control only NoEC No error control protocol ...

Page 47: ...Chapter 4 Remote Configuration ...

Page 48: ...ION If you hang up while you are in remote configuration mode it may lock up the remote modem Setup Multi Tech modems are shipped with a default setup password MTSMODEM Because anyone who has an owner s manual knows the default setup password for security you should change the password and possibly also the remote configuration escape character Changing the Setup Password 1 Open a data communicati...

Page 49: ... ASCII code for the percent character Setting S9 to 0 zero disables remote configuration entirely but if you do this remotely you won t be able to change it back remotely 1 Establish a remote configuration link with the remote modem as described in Basic Procedure 2 Type ATS9 n where n is the ASCII code for the new remote configuration escape character then press ENTER 3 Save the new value by typi...

Page 50: ...50 MultiMobileUSB User Guide ...

Page 51: ...Chapter 5 Troubleshooting ...

Page 52: ... plug in the modem the operating system detects and configures the modem and the TR LED should come on If the TR LED does not come on check to see that the software from the MT5634MU Installation CD has been installed see Chapter 2 Step 2 Installing the Modem The Modem Does Not Respond to Commands Make sure you are issuing the modem commands from the data communications software either manually in...

Page 53: ...ialization string to replace X4 with X3 which will cause the modem to ignore dial tones note however that X3 is not allowed in some countries such as France and Spain If the modem reports BUSY the other number might be busy in which case you should try again later or it might indicate that you have failed to add a 9 prefix to the phone number if you must dial 9 for an outside line If you must dial...

Page 54: ...r and the telephone jack You might have had a poor connection because of line conditions or the problem might have originated on the other end of the line Try again If you were online with an online service it might have hung up on you because of lack of activity on your part or because you exceeded your time limit for the day Try again The Modem Cannot Connect When Answering Autoanswer might be d...

Page 55: ...Appendices ...

Page 56: ...aed to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help This device complies with Part 15 of the FCC ru...

Page 57: ...fy you in advance that temporary discontinuance of service may be required But if advance notice is not practical the telephone company will notify the customer as soon as possible Also you will be advised of your right to file a complaint with the FCC if you believe it is necessary 6 The telephone company may make changes in its facilities equipment operations or procedures that could affect the ...

Page 58: ...irement that the sum of the ringer equivalence numbers of all the devices does not exceed 5 NOTICE The Industry Canada label identifies certified equipment This certification means that the equipment meets certain telecommunications network protective operational and safety requirements The Department does not guarantee the equipment will operate to the user s satisfaction Before installing this e...

Page 59: ...tandard is DTMF tone dialing There is no guarantee that Telecom lines will always continue to support pulse dialing Use of pulse dialing when this equipment is connected to the same line as other equipment may give rise to bell tinkle or noise and may also cause a false answer condition Should such problems occur the user should NOT contact the Telecom Faults Service The preferred method of dialin...

Page 60: ...ech web site in Portable Document Format PDF files at http www multitech com support manuals IDCfiles manuals idc You can download the Acrobat Reader to view PDF files you may want to bookmark http www adobe com prodindex acrobat readstep html before following the download link For files with a ZIP extension you can download PKUNZIP EXE to extract the zipped files from the Multi Tech FTP site at f...

Page 61: ...te All loopback tests operate at all speeds except 300 bps Local Analog Loopback Test V 54 Loop 3 In this test data from your computer or terminal is sent to your modem s transmitter converted into analog form looped back to the modem s receiver converted into digital form and then sent to your monitor for verification No connection to the phone line is required Computer or Terminal Local MultiMod...

Page 62: ...est Procedure 1 Arrange to have T6 set on the remote test modem 2 Open your communications software and go into terminal mode Type AT and press ENTER you should get an OK message Type AT N and press ENTER to disable error correction 3 Dial the remote modem and establish your online connection 4 Type the escape sequence AT and press ENTER to bring your modem into online command mode 5 Type AT T6 an...

Page 63: ...cape sequence AT and press ENTER to bring your modem into online command mode 4 Type AT T3 and press ENTER Once you receive an OK message from your modem if responses are enabled your modem is placed in digital loopback mode 5 Have someone enter data from the remote keyboard For this test typing multiple uppercase U characters is a good way to send an alternating test pattern of binary ones and ze...

Page 64: ... be limited at MTS s option to repair or replacement of any products that prove to be defective within the warranty period or at MTS s option issuance of a refund of the purchase price Defective products must be returned by Customer to MTS s factory with transportation prepaid MTS WILL NOT BE LIABLE FOR CONSEQUENTIAL DAMAGESAND UNDER NO CIRCUMSTANCES WILL ITS LIABILITY EXCEED THE PURCHASE PRICE FO...

Page 65: ...upplies replacement transformers cables and connectors for select Multi Tech products You can place an order with SupplyNet via mail phone fax or the Internet at Mail SupplyNet Inc 614 Corporate Way Valley Cottage NY 10989 Phone 800 826 0279 Fax 914 267 2420 Email info thesupplynet com Internet http www thesupplynet com SupplyNet Online Ordering Instructions 1 Browse to http www thesupplynet com I...

Page 66: ...censed sublicensed distributed transferred or made available in any form in whole or in part to others without expressed written permission of Multi Tech Systems Inc Copies of the Software may be made to replace worn or deteriorated copies for archival or backup procedures Licensee agrees to implement sufficient security measures to protect Multi Tech Systems Inc proprietary interests and not to a...

Page 67: ...ddress for your computer If your ISP provides an IP address for your computer or for their Domain Name Server DNS you ll need to enter these addresses when you configure the Dial Up connection Many ISPs use dynamic IP addresses which means they issue your computer a new IP address each time you log into their system If your ISP uses dynamic IP addresses you do not need to configure an IP address w...

Page 68: ...his connection In the Select a device list box select your Multi Tech System modem from the list Click Next 4 The Make New Connection dialog box is displayed Enter the Area Code Telephone number and Country Code for the computer you will be calling with this connection your ISP s access phone number Click Next ...

Page 69: ... created and select Properties to open the Modem Properties dialog box 7 The Modem Properties dialog box is displayed For Windows 95 98 click the Server Types tab to display the server property screen Select the appropriate Server Type Log on options and protocol selections for the device to which you are connecting e g your ISP For Windows ME go to the Networking tab to choose these same server r...

Page 70: ...to save the TCP IP values and return to the Server Types tab When you have completed customizing the modem properties for this connection click OK To use this connection double click the Dial Up Connection icon within the Dial Up Networking folder If prompted enter your Internet account User Name and Password and click Connect Windows 2000 Dial Up Networking The following instructions describe all...

Page 71: ...ch best describes the type of connection you are creating with this definition Click Next The process for completing your Dial Up Networking connection will vary based on the connection type selected in the previous step If you select Dial up to private network and have only one modem installed a The Phone Number to Dial dialog box is displayed Enter the phone number of the computer network or Int...

Page 72: ...lick the Advanced tab to access options for selecting your connection type and logon procedures Your ISP should provide this information for your account If you are not sure which connection type to choose try PPP Although many ISPs automatically provide an IP address for your machine and their Domain Name Server DNS each time you connect to them some ISPs do not If your ISP provided IP addresses ...

Page 73: ...the boxes next to the name of each networking component you want to enable for incoming connections Click Next e The Completing the Network Connection Wizard dialog box is displayed In the box provided enter a meaningful name for this connection and click Finish If you select Connect directly to another computer This connection option is designed to allow a connection between two computers using a...

Page 74: ... the modem s firmware using the HEX file and the flash upgrade program 7 Restore your parameters Step 1 Identify the Modem Firmware You must know the model number and firmware version of your Multi Tech modem to know whether or not you should update it 1 Run your favorite terminal program You can use HyperTerminal for Windows 95 98 ME 2000 or Windows NT 2 In the program s terminal window type AT F...

Page 75: ...p 4 Extract the Upgrade Files 1 Install the Flash Wizard utility by double clicking the file name in Windows Explorer 2 Extract the upgrade files by double clicking the file name The extracted files include a HEX file which contains the upgrade data and a Readme file 3 Copy the upgrade HEX file into the Flash Wizard folder which in a default installation is at C Program Files MultiTech Systems Fla...

Page 76: ...tly and securely attached 2 Click the modem to be upgraded and then click Next to proceed 3 Select the port to be upgraded from the Port list select the appropriate HEX file from the Hex File list and then click Next to continue Note Do not use FLASHLDR HEX This file is used internally by Flash Wizard 4 The Progress dialog box appears showing a status bar that indicates the progress of the upgrade...

Page 77: ... for your country 28 Connect messages 45 Connecting the modem 9 15 country configuration 28 D Data Buffer Control command 39 Data buffering 37 Data calling tone 42 Data Calling Tone command 40 Data Carrier Detect command 36 data communications software installing 29 Data compression 8 Data Compression Control command 41 Data LED 9 Data mode 32 35 62 Data rates 8 Data Set Ready Control command 37 D...

Page 78: ...ftware 29 ISP setting up 67 K K56flex protocol 6 L LED indicators 9 Lightning protection 9 Line connection 15 Line feed character 42 LINE jack 9 Load Factory Settings command 37 Long Space Disconnect command 36 Loopback tests Local analog loopback 61 Local digital loopback 63 Remote digital loopback 62 M Messages 45 MNP 5 data compression 8 41 MNP error correction 8 39 Modem compatibility 10 Modem...

Page 79: ... Data transmission 8 Fax transmission 8 Maximum 43 Speed conversion data buffer 37 39 Standby mode delay time 44 Store Current Configuration command 38 Store Setup Password command 41 Surge protectors 9 T Technical specifications 10 Technical support 65 Telephone line 8 9 53 Terminal mode 52 62 Terminal ready LED 9 Testing the modem 38 53 Loopback tests 61 Tone Dialing command 35 Tones dialing 42 ...

Page 80: ...60 View Numbers in Blacklist command 40 W Wait time for dial tone 42 Warranty 8 64 Windows 2000 uninstalling a modem 27 Windows 95 uninstalling a modem 27 Windows 98 uninstalling a modem 27 Windows ME uninstalling a modem 27 28 World Wide Web 29 X XON XOFF Pass Through command 40 ...

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