3Com 3CP5610A - U.S. Robotics 56K V90 PCI Performance Pro Faxmodem Dos/NT/Linux User Manual Download

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http://www.usr.com/

U.S. Robotics

Modems:

User’s Guide

Published September 2000

Summary of Contents for 3CP5610A - U.S. Robotics 56K V90 PCI Performance Pro Faxmodem Dos/NT/Linux

Page 1: ...http www usr com U S Robotics Modems User s Guide Published September 2000 ...

Page 2: ...CENSE TXT If you are unable to locate a copy please contact U S Robotics and a copy will be provided to you UNITED STATES GOVERNMENT LEGEND If you are a United States government agency then this documentation and the software described herein are provided to you subject to the following All technical data and computer software are commercial in nature and developed solely at private expense Softwa...

Page 3: ...EXTERNAL MODEMS WITH SPEAKERPHONE Making a Speakerphone Call with a Telephone 5 External Modems with Speakerphone 5 Internal Modems with Speakerphone 5 Making a Speakerphone Call with Communications Software 5 Answering an Incoming Call 5 External Modems with Speakerphone 5 Internal Modems with Speakerphone 6 Speaking Privately to a Caller 6 Adjusting Speaker Volume 6 Muting a Call 6 External Mode...

Page 4: ... Modem as a USB Device 20 If You Are Using This Modem as a Serial Device 21 My software isn t recognizing my modem 22 My modem won t dial out or doesn t answer incoming calls 23 For Both Dialing and Answering Problems 23 Office Users 24 Dialing Problems for Voice Mail Users 24 My modem sounds like it s trying to connect to another modem but fails 24 My modem isn t achieving a 56K Internet connecti...

Page 5: ...ail Users 40 My modem sounds like it s trying to connect to another modem but fails 40 My modem isn t achieving a 56K Internet connection 40 Internal PCI Modems 41 Basic Troubleshooting Steps 41 My computer isn t recognizing my modem 41 My software isn t recognizing my modem 44 My modem won t dial out or doesn t answer incoming calls 45 Office Users 46 Voice Mail Users 46 My modem sounds like it s...

Page 6: ... 64 Basic Data Commands 64 Extended Data Commands 71 S Registers 80 Bit Mapped Registers 84 7 REGULATORY INFORMATION Manufacturer s Declaration of Conformity 89 Tested to comply with FCC Standards for Home and Office Use 89 Part 15 89 Caution to the User 90 Part 68 90 Caution to the User 91 Fax Branding 91 Radio and Television Interference 91 For Canadian Modem Users 91 ...

Page 7: ... Modulation Schemes ITU T V 92s ITU T V 90 x2TM technology ITU T V 34 ITU T V 34 ITU T V 32bis ITU T V 32 ITU T V 22bis ITU T V 22 ITU T V 23 Bell 212A ITU T V 21 Bell 103 models 5686 5687 5609 5610 5605 5613 only s on select models ...

Page 8: ...d V 90 V 92 28000 29333 30666 32000 33333 34666 36000 37333 38666 40000 41333 42666 44000 45333 46666 48000 49333 50666 52000 53333 54666 56000 Back Channel Link Rates upload V 92 28000 29333 30666 32000 33333 34666 36000 37333 38666 40000 41333 42666 44000 45333 46666 48000 Back Channel Link Rates upload V 90 4800 7200 9600 12000 14400 16800 19200 21600 24000 26400 28800 31200 33600 V 34 Link Rat...

Page 9: ... Link Rates 3 V 32bis Link Rates 4800 7200 9600 12000 14400 Additional Link Rates 300 1200 75 V 23 1200 2400 Fax Link Rates 2400 4800 7200 9600 12000 14400 DTE Rates 300 1200 2400 9600 19200 38400 57600 115200 ...

Page 10: ...4 CHAPTER 1 56K FAXMODEM PRODUCT FEATURES ...

Page 11: ...n top of the modem 5 Hang up the handset 6 To end the call press the SPEAKER button again Internal Modems with Speakerphone See your modem s communications software manual for instructions Making a Speakerphone Call with Communications Software 1 Dial the telephone number using your communications software 2 To end the call hang up using your software see the software s Help file for more informat...

Page 12: ...n use a phone handset instead of the speaker by lifting the handset To use the speaker again press the SPEAKER button and then hang up the handset Adjusting Speaker Volume Press the up and down volume buttons on top of the modem marked VOLUME Muting a Call External Modems with Speakerphone If you d like to say something without the receiving party hearing you you can press the MUTE button When you...

Page 13: ...5 1 Click Start point to Settings and then click Control Panel 2 Double click the Add Remove Programs icon 3 Scroll down select your modem and click Add Remove 4 A reminder that your U S Robotics modem will be permanently removed from your system appears Click Remove to proceed 5 Click OK to confirm that the modem has been removed from your system 6 Next verify that you completely uninstalled the ...

Page 14: ... 14 Replace the computer s cover Your modem has now been completely uninstalled Uninstalling an Internal Faxmodem 1 First remove the modem from the Windows operating system From the Start menu point to Settings and then click Control Panel 2 Double click the Modems icon 3 Click to highlight the name of the modem you wish to remove 4 Click the Remove button 5 Shut down Windows and turn off your com...

Page 15: ...5 Click to highlight the name of the modem you wish to remove 6 Click the Remove button 7 Remove the phone cords from the modem s TELCO and PHONE jacks 8 Shut down Windows and turn off your computer CAUTION To avoid the risk of electric shock make sure your computer and all peripheral devices are turned off and unplugged 9 If your modem uses a power adapter unplug it from the outlet or power strip...

Page 16: ...10 CHAPTER 3 UNINSTALLING A U S ROBOTICS MODEM ...

Page 17: ...ht on the front panel will be on 2 Is your power supply connected properly to both your modem and an electrical outlet If it is check the outlet with another electric device like a lamp to be sure that you are getting power Also use the power supply that came with your modem other similar looking power supplies may be of different voltages and could damage your modem 3 Are you using the proper cab...

Page 18: ... cord properly connected The phone cord should be plugged into the jack labelled on the modem and into the wall phone jack Use the phone cord included in your modem s box if possible My computer isn t recognizing my modem Possible solution You may be using a COM port that is either already in use or not configured correctly To work properly this modem needs to be plugged into an enabled serial por...

Page 19: ...o change your BIOS settings if they are incorrect Windows 95 98 Make sure your COM port is not already in use by another modem Click Windows Start Settings and Control Panel and then double click Modems Look for another modem already in the machine If there is another modem installed click the Diagnostics tab to find out which COM port it is using If a previous modem is already using the available...

Page 20: ...with another electric device like a lamp to be sure that you are getting power Also you must use the power supply that came with your modem other similar looking power supplies may be of different voltages and could damage your modem When your modem is properly connected to power and is turned on the CS light on the front panel will be on Possible solution Your software s port settings may be inco...

Page 21: ...ur configuration and make sure you have the correct port selected Click Start point to Settings and click Network and Dial up Connections Make sure that the description in the Connect Using box under the General tab matches the description of the modem you are using If it doesn t match select the proper modem description Windows 95 98 NT If you are using Dial Up Networking it may not be installed ...

Page 22: ...Contact your phone system administrator if you are unsure whether or not your phone line is digital If your phone system requires dialing 9 to access an outside line be sure to add 9 before the number you are dialing Dialing Problems for Voice Mail Users Possible solution If you have voice mail provided by your local phone company your dial tone may be altered when messages are waiting Retrieve yo...

Page 23: ... conversion The 56K signal from your ISP begins as a digital signal Somewhere between the ISP and your modem there will be an analog to digital signal conversion so that your modem can receive the data There must be no more than one analog to digital signal conversion in the path from your ISP to your modem If more than one analog to digital conversion occurs your connect speeds will default to V ...

Page 24: ...o use the power supply that came with your modem other similar looking power supplies may be of different voltages and could damage your modem 3 Are you using the proper cable to connect your modem to your computer If you are using your modem as a USB device you will to need to purchase a USB A to B cable If you are using your modem as a serial device you will need to purchase an RS 232 serial mod...

Page 25: ...ble solution Make sure the modem is plugged in and turned on If it is check the outlet with another electric device like a lamp to be sure that you are getting power Also you must use the power supply that came with your modem other similar looking power supplies may be of different voltages and could damage your modem When your modem is properly connected to power and is turned on the Power light...

Page 26: ...System icon Next click the Device Manager tab If your USB is enabled there will be a USB icon and the words Universal serial bus controller under the Computer icon See the following picture for an example of how the USB icon appears in Device Manager If USB is not enabled you will need to enable USB in the system s BIOS For instructions check with your computer manufacturer s technical support Onc...

Page 27: ... in the machine If there is another modem listed check which COM port it is using If this modem is already using the available COM port you can either use another COM port or uninstall the modem See the modem s manual for uninstallation instructions Right click the My Computer icon on your desktop Click Properties Click Hardware In the Device Manager section click Device Manager Look under Ports C...

Page 28: ...he Installation CD ROM Possible solution Make sure the modem is plugged in and turned on and that you are using the power supply that came with it When your modem is properly connected to power and is turned on the Power light on the front panel will be on Possible solution Your software s port settings may be incorrect Make sure the software s port settings match those for your modem This informa...

Page 29: ...d make sure you have the correct port selected Click Start point to Settings and click Network and Dial up Connections Make sure that the description in the Connect Using box under the General tab matches the description of the modem you are using If it doesn t match select the proper modem description Windows 95 98 NT If you are using Dial Up Networking it may not be installed or configured corre...

Page 30: ...il provided by your local phone company your dial tone may be altered when messages are waiting Retrieve your voice mail to restore your normal dial tone My modem sounds like it s trying to connect to another modem but fails Possible solution You may have a poor connection All calls are routed differently so try placing the call again My modem isn t achieving a 56K Internet connection Possible sol...

Page 31: ...pairments on the local lines between your ISP and your modem These impairments can prevent or limit V 90 connection speeds All telephone calls are routed differently so you should try making your 56K connection several times One way to test this is to dial into a long distance location Long distance lines are often much clearer than local lines It is important to note that telephone companies are ...

Page 32: ...This modem requires a hardware handshaking cable which is packaged with your modem Make sure it is connected to the modem port on the back of your computer and not the printer port My computer isn t recognizing my modem Possible solution Make sure the modem is plugged in and turned on Also you must use the power supply that came with your modem other similar looking power supplies may be of differ...

Page 33: ...power and is turned on the TR and CS lights on the front panel will be on If they are not check your outlet with another electrical device to be sure you are getting power Possible solution Verify that your communications software is set to use the Modem port If this is not the case either change the setting in your software or physically change your modem s connection to your Macintosh computer R...

Page 34: ... your phone system requires dialing 9 to access an outside line be sure to add 9 before the number you are dialing Dialing Problems for Voice Mail Users Possible solution If you have voice mail provided by your local phone company your dial tone may be altered when messages are waiting Retrieve your voice mail to restore your normal dial tone My modem sounds like it s trying to connect to another ...

Page 35: ...rently support 2 The telephone line between your ISP and your modem must be capable of supporting a 56K connection and contain only one analog to digital conversion The 56K signal from your ISP begins as a digital signal Somewhere between the ISP and your modem there will be an analog to digital signal conversion so that your modem can receive the data There must be no more than one analog to digi...

Page 36: ...x to find out which operating systems are supported My computer isn t recognizing my modem Possible solution Make sure that your modem is installed correctly in your computer The modem will fit snugly and you may need to rock it back and forth firmly to properly seat it in its slot When the modem is installed correctly you will no longer see any part of the gold or black connector edge Possible so...

Page 37: ...lick the View Resources tab then click Interrupt request IRQ to make sure that it is selected On the left side of the Computer Properties screen is a list of the system IRQs numbered 0 through 15 On the right side are the devices that are using these IRQs Any IRQ numbers not listed on the left side are not being used Take note of an available IRQ that your modem can use If a usable free IRQ does n...

Page 38: ...em type selected in your software or in Windows Click on Windows Start Settings and Control Panel When Control Panel opens click Phone and Modem Options Click the Modems tab Here you will see a list of installed modems You can also add remove or view the properties of modems from this window The U S Robotics modem you have installed should be present in the list of installed modems If none of the ...

Page 39: ...fax machines or other devices between the modem and the wall jack Office Users Possible solution You may have plugged your modem s phone cord into a digital line which can damage your modem Contact your phone system administrator if you are unsure whether or not your phone line is digital If your phone system requires dialing 9 to access an outside line be sure to add 9 before the number you are d...

Page 40: ...onnections currently support 2 The telephone line between your ISP and your modem must be capable of supporting a 56K connection and contain only one analog to digital conversion The 56K signal from your ISP begins as a digital signal Somewhere between the ISP and your modem there will be an analog to digital signal conversion so that your modem can receive the data There must be no more than one ...

Page 41: ... modem s jumpers to Plug and Play mode Windows should locate a free IRQ if one exists for your modem to use If Plug and Play fails to install the modem you need to determine IRQ availability Right click the My Computer icon on your desktop Click Properties and then the Hardware tab In the Device Manager section click Device Manager From the View menu select Resources by type Click Interrupt Reques...

Page 42: ... list of devices If a yellow exclamation point appears over the modem s description your modem is in conflict with another device Either your modem or the other device will have to be reinstalled to another IRQ in order to resolve your conflict If a usable free IRQ does not exist you may need to remove disable or relocate another device Refer to that device s documentation for more information abo...

Page 43: ... exclamation points or red Xs over them your COM ports may be configured incorrectly If this is the case you may need to contact your computer manufacturer Windows 95 98 Make sure your COM port is not already in use by another device Click Windows Start Settings and Control Panel and then double click Modems Look for another modem already installed in your computer If there is another modem instal...

Page 44: ...oftware or in Windows Click on Windows Start Settings and Control Panel When Control Panel opens click Phone and Modem Options Click the Modems tab Here you will see a list of installed modems You can also add remove or view the properties of modems from this window The U S Robotics modem you have installed should be present in the list of installed modems If none of the modem descriptions in the ...

Page 45: ...x matches the description of the modem you are using If it doesn t match select the proper modem description My modem won t dial out or doesn t answer incoming calls For both Dialing and Answering Problems Possible solution You may have a bad phone cord connection to your modem or your phone cord may be plugged into the wrong jack The phone cord should be plugged into the jack labelled on the mode...

Page 46: ...itions may affect the actual speeds during a given connection Due to unusual telephone line configurations some users will not be able to take full advantage of V 90 technology at this time In order to achieve a V 90 connection the following must occur 1 The server you re dialing in to must support and provide a digital V 90 signal Your ISP can provide you with a list of dial up connections and in...

Page 47: ...he modem and reinstall it in another slot if possible When the modem is installed correctly you will no longer see any part of the connector edge which may be gold or black You will need to press the modem in firmly so that it is seated properly in its slot See the Installation Guide that came with your modem for instructions more specific to your modem My computer isn t recognizing my modem Possi...

Page 48: ... devices to which they are assigned If an IRQ is not present in this list it indicates that Windows is not currently using it and the IRQ is considered available Locate your modem in the list of devices If a yellow exclamation point appears over the modem s description your modem is in conflict with another device Either your modem or the other device will have to be reinstalled to another IRQ in ...

Page 49: ... Ports are configured correctly Right click the My Computer icon on your desktop Click Properties Click the Hardware tab In the Device Manager section click the Device Manager button Look under Ports COM LPT If the COM Ports have yellow exclamation points or red Xs over them your COM ports may be configured incorrectly If this is the case you may need to contact your computer manufacturer Windows ...

Page 50: ...match those for your modem The Installation Guide that came with your modem explains how to determine your modem s port settings Check your communication software s documentation for instructions on adjusting the port settings in your software Possible solution Windows 2000 You may not have the correct modem type selected in your software or in Windows Click on Windows Start Settings and Control P...

Page 51: ...ows 95 98 NT If you are using Dial Up Networking it may not be installed or configured correctly Check your configuration and make sure you have the correct modem selected Double click My Computer double click Dial Up Networking right click the connection you are trying to use and click Properties Make sure that the description in the modem box matches the description of the modem you are using If...

Page 52: ...cs 56K modems are capable of receiving downloads at up to 56 Kbps and sending at 31 2 Kbps Actual download speeds you experience may be lower due to varying line conditions Maximum download speeds in U S and Canada are limited to 53K due to regulatory limits on power output Our research has shown that the vast majority of telephone lines in North America can and do support 56K Installation The V 9...

Page 53: ...uld try making your 56K connection several times One way to test this is to dial into a long distance location Long distance lines are often much clearer than local lines It is important to note that telephone companies are constantly upgrading their systems Lines that do not support 56K today may support 56K in the near future 3 Your modem must be connecting to a V 90 56K server A pair of 56K mod...

Page 54: ...ave a 2 50 per minute charge Customer Support via the Phone Technical questions about U S Robotics modems can be answered by technical support specialists If you can have your ati7 information written down on a piece of paper before you call tech support In the United States Regular Phone Service 847 262 5151 8 00 am 6 00 pm CST Monday Friday Automated service is available 24 hours a day 7 days a ...

Page 55: ...p 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 shipping label as well as inside the package Send the package insured or via a courier capable of tracking the progress of the shipment Ship to ...

Page 56: ...50 CHAPTER 4 TROUBLESHOOTING AND HELP RESOURCES ...

Page 57: ...ode 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 ARQ Automatic Repeat reQuest A function that allows your modem to detect ...

Page 58: ...s used to dial voice numbers See basic data command Dn in the Technical Reference chapter of this manual 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 recognizes either of two...

Page 59: ...th For example at 2400 bps 8 bit characters with start stop bits for a total of ten bits per character will be transmitted at a rate of approximately 240 characters per second cps Some protocols such as error control protocols employ advanced techniques such as longer transmission frames and data compression to increase cps class 1 and 2 0 International standards used by fax application programs a...

Page 60: ...tablish and control the data link via the telephone network default Any setting assumed at startup or reset by the computer s software and attached devices The computer or software will use these settings until changed by the user or other software 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 ...

Page 61: ...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 extended data commands Hn In Rn in the Technical Reference chapter of this manual frame A data communications term for a block of data with header and ...

Page 62: ...ial up modem access to the Internet for a fee 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 Access Procedure for Modems An error control protocol def...

Page 63: ...grammable random access memory whose data is retained when power is turned off On the U S Robotics modem it includes four stored phone numbers and the modem settings off on hook Modem operations that are the equivalent of manually lifting a phone receiver taking it off hook and replacing it going on hook online fall back fall forward A feature that allows high speed error control modems to monitor...

Page 64: ...or correction are some of the operations that may be defined in protocols RAM Random Access Memory Memory that is available for use when the modem is turned on but that clears of all information when the power is turned off The modem s RAM holds the current operational settings a flow control buffer and a command buffer remote digital loopback A test that checks the phone link and a remote modem s...

Page 65: ...communication with the modem Also known as command 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 USB Universal Serial Bus V 8 The ITU T standard specification that covers the initial handshaking process V 17 fax An ITU T standard for making f...

Page 66: ... 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 modems fall back to the next lower speed when line quality is impaired fall...

Page 67: ...s modem communications This technology offers three new features to enhance the V 90 standard The first feature is V PCM Upstream which allows a modem s upstream communication to reach speeds of 48 000 bps The second feature provides quicker connection times by allowing the modem to remember the line conditions of a V 92 supported service provider The third feature is the Modem On Hold technology ...

Page 68: ... connections x2 connections require a modem with x2 technology calling a digitally connected Internet Service Provider or corporate host site compatible with x2 technology XON XOFF Standard ASCII control characters used to tell an intelligent device to stop resume transmitting data Zmodem Similar to Xmodem and Ymodem except it includes batch transfer the ability to recover from a partially complet...

Page 69: ...a valid data signal carrier from a remote modem indicating that data transmission is possible Always ON if CD override is ON C0 RD Received Data Flashes when modem sends result codes or passes received data bits from remote SD Send Data Flashes when computer sends a data bit to modem TR Data Terminal Ready ON if modem receives a DTR signal from computer Always ON modem ignores DTR if the DTR overr...

Page 70: ...are Flow Control template loaded in NVRAM when the modem is shipped Defaults are listed in italics Basic Data Commands control key S Stop or restart help screens ARQ Error Control FAX Fax Operations Data Mode Error Control ON if modem is set to M4 or M5 and successfully establishes an error control connection Flashes when modem retransmits data to remote modem Fax Mode flashes to indicate fax mode...

Page 71: ...or the command is executed forever Does not require the AT prefix or a Carriage Return Escapes to online command mode Any key Aborts off hook dial answer operation and hangs up AT Required command prefix except with A and A Use alone to test for OK result code Bn U S ITU T answer sequence B0 ITU T answer sequence B1 U S answer tone Dn Dials the specified phone number Includes the following 0 9 Num...

Page 72: ...s for quiet answer and continues X3 or higher Displays a list of Dial commands En Sets local echo E0 Echo OFF E1 Modem displays keyboard commands Fn Sets online local echo of transmitted data ON OFF F0 Local echo ON Modem sends a copy of the data it sends to the remote system to your screen F1 Local echo OFF Receiving system may send a remote echo of data it receives Hn Controls ON OFF hook H0 Han...

Page 73: ... Ln Controls speaker volume internals only L0 Low volume L1 Low volume L2 Medium volume L3 High volume Mn Operates speaker M0 Speaker always OFF M1 Speaker ON until CONNECT M2 Speaker always ON M3 Speaker ON after dial until CONNECT On Returns online O0 Returns online O1 Returns online and retrains P Sets pulse dial for phone lines that don t support touch tone dialing Qn Displays suppresses resul...

Page 74: ...isters T Sets tone dial Vn Displays verbal numeric result codes V0 Numeric codes V1 Verbal codes Xn Sets result code displayed Default is X4 NOTE Result codes 0 155 are for 33 6 products and V 90 products Result codes above 155 apply only to V 90 Result Codes X0 X1 X2 X3 X4 Table6 1 Result Codes X0 X1 X2 X3 X4 0 OK 1 CONNECT 2 RING 3 NO CARRIER 4 ERROR 5 CONNECT 1200 6 NO DIAL TONE 7 BUSY 8 NO ANS...

Page 75: ... 28800 151 CONNECT 31200 155 CONNECT 33600 256 CONNECT 28000 260 CONNECT 29333 264 CONNECT 30666 268 CONNECT 32000 180 CONNECT 33333 272 CONNECT 34666 276 CONNECT 36000 184 CONNECT 37333 280 CONNECT 38666 284 CONNECT 40000 188 CONNECT 41333 192 CONNECT 42666 196 CONNECT 44000 200 CONNECT 45333 204 CONNECT 46666 208 CONNECT 48000 212 CONNECT 49333 216 CONNECT 50666 Table6 1 Result Codes X0 X1 X2 X3...

Page 76: ...ration 2 Z Resets modem Z0 Resets modem to NVRAM profile selected by Y command or dip 7 Z1 Resets modem to NVRAM profile 0 Z2 Resets modem to NVRAM profile 1 Z3 Resets modem to factory default profile 0 F0 Z4 Resets modem to factory default profile 1 F1 Z5 Resets modem to factory default profile 2 F2 220 CONNECT 52000 224 CONNECT 53333 228 CONNECT 54666 232 CONNECT 56000 Adaptive Dialing Wait for ...

Page 77: ...data compression Bn Manages modem s serial port rate B0 Variable follows connection rate B1 Fixed serial port rate B2 Fixed in ARQ mode variable in non ARQ mode Cn Controls Carrier Detect CD signal C0 CD override C1 Normal CD operations Dn Controls Data Terminal Ready DTR operations D0 DTR override D1 DTR toggle causes online Command mode D2 Normal DTR operations D3 Resets on receipt of DTR Fn Loa...

Page 78: ...Clear to Send CTS H2 Software flow control XON XOFF H3 Hardware and software flow control In Sets Receive Data RD software flow control see also Rn I0 Software flow control disabled I1 XON XOFFsignals to your modem and remote system I2 XON XOFFsignals to your modem only Kn Enables disables data compression K0 Data compression disabled K1 Auto enable disable K2 Data compression enabled K3 MNP5 comp...

Page 79: ...nction with Un and Un is greater than 0 Nn sets the ceiling connect speed Un sets the floor connect speed see also the table in the Un section N0 Connection speed is determined by the remote modem N1 300 bps N2 1200 bps N3 2400 bps N4 4800 bps N5 7200 bps N6 9600 bps N7 12 000 bps N8 14 400 bps N9 16 800 bps N10 19 200 bps N11 21 600 bps N12 24 000 bps N13 26 400 bps N14 28 800 bps ...

Page 80: ...92 products N17 28 000 bps N18 29 333 bps N19 30 666 bps N20 32 000 bps N21 33 333 bps N22 34 666 bps N23 36 000 bps N24 37 333 bps N25 38 666 bps N26 40 000 bps N27 41 333 bps N28 42 666 bps N29 44 000 bps N30 45 333 bps N31 46 666 bps N32 48 000 bps N33 49 333 bps N34 50 666 bps N35 52 000 bps N36 53 333 bps ...

Page 81: ...ores RTS R2 Received Data to computer only on RTS Sn Controls Data Set Ready DSR operations S0 DSR override always ON S1 Modem controls DSR Tn Begins test modes T0 Ends testing T1 Analog Loopback T2 Reserved T3 Local Digital Loopback T4 Enables Remote Digital Loopback T5 Prohibits Remote Digital Loopback T6 Initiates Remote Digital Loopback T7 Remote Digital with self test and error detector T8 An...

Page 82: ...Connects at highest available speed Note This default setting should be sufficient for most users N 0Connects at fixed speed U 0Connects at highest speed above Un N 0 U 0Connects at highest speed between Nn and Un U0 No minimum connection speed U1 300 bps U2 1200 bps U3 2400 bps U4 4800 bps U5 7200 bps U6 9600 bps U7 12 000 bps U8 14 400 bps U9 16 800 bps U10 19 200 bps U11 21 600 bps U12 24 000 b...

Page 83: ...roducts U17 28 000 bps U18 29 333 bps U19 30 666 bps U20 32 000 bps U21 33 333 bps U22 34 666 bps U23 36 000 bps U24 37 333 bps U25 38 666 bps U26 40 000 bps U27 41 333 bps U28 42 666 bps U29 44 000 bps U30 45 333 bps U31 46 666 bps U32 48 000 bps U33 49 333 bps U34 50 666 bps U35 52 000 bps U36 53 333 bps ...

Page 84: ...ondestructive unexpedited Zn s Writes phone number string s to NVRAM at position n n 03 Zn L Writes last executed dial string to NVRAM at position n n 03 Zn Displays phone number stored at position n n 03 ZL Displays the last executed dial string Table6 2 Switch Default Function 1 OFF Data Terminal Ready DTR Override OFF Normal DTR operations computer must provide DTR signal for the modem to accep...

Page 85: ...er if specified in NVRAM ON Disables auto answer 6 OFF Carrier Detect CD Override OFF Modem sends CD signal when it connects with another modem drops CD on disconnect ON CD always ON Override 7 OFF Power on and ATZ Reset Software Defaults OFF Loads Y0 Y4 configuration from user defined nonvolatile memory NVRAM ON Loads F0 Generic template from read only memory ROM 8 ON AT Command Set Recognition O...

Page 86: ... for the Carriage Return character Valid range is 0 127 S4 10 Stores ASCII decimal code for the Line Feed character Valid range is 0 127 S5 8 Stores ASCII decimal code for the Backspace character A value of 128 255 disables Backspace key s delete function S6 2 Sets number of seconds modem waits before dialing If Xn is set to X2 or X4 this is time out length if no dial tone S7 60 Sets number of sec...

Page 87: ...will not hang up when carrier is lost Dropping DTR hangs up the modem S11 70 Sets duration and spacing in milliseconds for tone dialing S12 50 Sets duration in fiftieths of a second of guard time for escape code sequence S13 0 Bit mapped register Select the bit s you want on and set S13 to the total of the values in the Value column For example ATS13 17 enables bit 0 value is 1 and bit 4 value is ...

Page 88: ...units of breaks sent from the modem to the computer applies to MNP or V 42 mode only S22 17 Stores ASCII decimal code for the XON character S23 19 Stores ASCII decimal code for the XOFF character S24 0 Reserved S25 20 Sets duration in hundredths of a second of a true DTR drop Prevents modem from interpreting random glitches as DTR loss Most users will use the default this register is useful for co...

Page 89: ...o Table 6 8 S34 0 S35 S37 Reserved S38 0 Sets an optional delay in seconds before a forced hang up and clearing of the Transmit buffer when DTR drops during an ARQ call This allows time for a remote modem to acknowledge receipt of all transmitted data before it is disconnected The modem immediately hangs up when DTR drops This option only applies to connections terminated by dropping DTR If the mo...

Page 90: ...Reset non MNP transmit buffer from 1 5K to 128 bytes 2 4 Set backspace key to delete 3 8 On DTR signal autodial the number stored in NVRAM at position 0 4 16 At power on reset autodial the number stored in NVRAM at position 0 5 32 Reserved 6 64 Disable quick retrains 7 128 Disconnect on escape code Table6 5 Settings for S15 Bit Value Result 0 1 Disable ARQ MNP for V 22 1 2 Disable ARQ MNP for V 22...

Page 91: ...ables unencoded non trellis coded modulation in V 32 mode 2 4 Disables V 32 modulation 3 8 Disables 2100 Hz answer tone to allow two V 42 modems to connect faster 4 16 Enables V 23 fallback mode 5 32 Disables V 32bis mode 6 64 Disable V 42 selective reject 7 128 Software compatibility mode This setting disables the codes and displays the 9600 code instead The actual rate of the call can be viewed ...

Page 92: ...ble6 8 Settings for S33 Bit Value Results 0 1 Disable 2400 symbol rate 1 2 Disable 2743 symbol rate 2 4 Disable 2800 symbol rate 3 8 Disable 3000 symbol rate 4 16 Disable 3200 symbol rate 5 32 Disable 3429 symbol rate 6 64 Reserved 7 128 Disable shaping Table6 9 Settings for S41 Bit Value Results 0 1 Distinctive ring enabled 1 2 Speakerphone connect message override voice products only 2 4 Disable...

Page 93: ...Bit Mapped Registers 87 4 16 Reserved 5 32 Reserved 6 64 Reserved 7 128 Reserved Table6 9 Settings for S41 Bit Value Results ...

Page 94: ...88 CHAPTER 6 TECHNICAL REFERENCE ...

Page 95: ...l Communications Commission 47 CFR part 15 subpart B 15 107 e Class B conducted limits 15 109 g Class B Radiated Emissions Limits U S Robotics Corporation 3800 Golf Road Rolling Meadows IL 60008 U S A Products marked CE indicate This device complies with the requirements of European Directive 1995 5 EC Tested to comply with FCC Standards for Home and Office Use Part 15 Operation is subject to the ...

Page 96: ...hould contact your telephone company to determine the maximum REN for your calling area This equipment uses the following USOC jacks RJ11C This equipment may not be used on coin service provided by the telephone company Connection to party lines is subject to state tariffs An FCC compliant telephone cord and modular plug are provided with this equipment which is designed to connect to the telephon...

Page 97: ...modem If you are using a different communication software program refer to its manual Radio and Television Interference This equipment generates and uses radio frequency energy and if not installed and used properly in strict accordance with the manufacturer s instructions may cause interference to radio and television reception The modem has been tested and found to comply with the limits for a C...

Page 98: ...ompany s inside wiring associated with a single line individual service may be extended by means of a certified connector assembly telephone extension cord The customer should be aware that compliance with the above conditions may not prevent degradation of service in some situations Currently telecommunication companies do not allow users to connect their equipment to jacks except in precise situ...

Page 99: ...e raccordement L abonné ne doit pas oublier qu il est possible que la conformité aux conditions énoncées cidessus n empÍche pas la dégradation du service dans certaines situations Les réparations de matériel homologué doivent être coordonnées par un représentant désigné par le fournisseur L entreprise de télécommunications peut demander à l utilisateur de débrancher un appareil à la suite de répar...

Page 100: ...94 CHAPTER 7 REGULATORY INFORMATION ...

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