US Robotics 56K Series Manual
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US Robotics 56K Series Manual

Voice internal pci
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3Com U.S. Robotics
56K* Voice Internal PCI
Manual
P/N: 2.024.506

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Summary of Contents for US Robotics 56K Series

  • Page 1 3Com U.S. Robotics 56K* Voice Internal PCI Manual P/N: 2.024.506...
  • Page 2 This manual covers installation and operating instructions for the following modems: ® 3Com U.S. Robotics 56K* Voice Internal PCI 3Com, the 3Com logo, and U.S. Robotics are registered trademarks and x2 is a trademark of 3Com Corporation. Windows is a registered trademark of Microsoft Corp. Other product and brand names may be trademarks or registered trademarks of their respective owners.

  • Page 3: Table Of Contents

    Table of Contents TABLE OF CONTENTS ....................3 WELCOME TO 56K* INFORMATION ACCESS...........1 PRODUCT FEATURES .....................2 ..........2 RROR ONTROL AND OMPRESSION CHEMES ..................2 ODULATION CHEMES ......................2 TANDARDS V.90 F ................2 RONT HANNEL ATES V.90 B ................2 HANNEL ATES V.32 ....................3 ATES ...................3 DDITIONAL ATES...
  • Page 4 ....................... 4 PEAKERPHONE ..................4 ERSONAL OICE HARDWARE INSTALLATION (READ ME FIRST) ..........6 INSTALLING THE MODEM WITH WINDOWS® 95, WINDOWS 98, AND WINDOWS NT 4.0..................... 8 (PNP) I ..............8 LUG AND NSTALLATION ..........8 OW TO NSERT THE ODEM INTO THE OMPUTER 95 ..........13...
  • Page 5 TROUBLESHOOTING ....................26 ! ....................26 IRST GLOSSARY.......................39 TECHNICAL REFERENCE ..................57 ....................57 YPING OMMANDS ..................58 ASIC OMMANDS ................68 XTENDED OMMANDS ......................78 EGISTERS .....................90 OMMANDS ....................93 CREEN ESSAGES COMPLIANCE INFORMATION................94 ..................94 OMPLIANCE ARNING ..................95 NTERCONNECTING ORTS ..................95 OMMAND ESTRICTIONS...
  • Page 6 REGULATORY INFORMATION................97 PC ..............97 NSTALLATION OF MODEM IN HOST ............97 ETWORK OMPATIBILITY ECLARATION : ........................98 CE C ....................98 OMPLIANCE Electromagnetic Compatibility................98 This device complies with the following standards in accordance with the European Directives 89/336/EEC................98 Safety (Low Voltage Directive)................98 ..........99 PERATION OF PAN UROPEAN APPROVED MODEMS...

  • Page 7: Welcome To 56K* Information Access

    Welcome to 56K* Information Access can get 56K Internet access from any service provider who offers the ITU V.90 standard or 3Com 56K technology. 3Com is working with providers everywhere to quickly upgrade their service to the ITU V.90 standard. * IMPORTANT! In accordance with the ITU The International Telecommunication standard for 56K transmissions (V.90), this...

  • Page 8: Product Features

    Product Features Modulation Schemes Fax Modulation Schemes ITU-T V.90 ITU-T V.17 ITU-T V.34 (Inc 33,600) ITU-T V.29 ITU-T V.32bis ITU-T V.27ter ITU-T V.32 ITU-T V.21 ITU-T V.22bis Fax Standards ITU-T V.22 EIA 578 Class 1 FAX ITU-T V 23 EIA 592 Class 2.0 FAX ITU-T V.21 V.90 Front Channel Link Rates 28000, 29333, 30666, 32000, 33333, 34666,...

  • Page 9: Table Of Contents

    V.34 Link Rates 4800, 7200, 9600, 12000, 14400, 16800, 19200, 21600, 24000, 26400, 28800, 31200, 33600 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...

  • Page 10: Voice Product Features

    Voice Product Features to converse normally without annoying If your new modem has voice echoes and distortion. Simply plug the capabilities, the following information speakers into the socket on the modem identified with the and the will apply: microphone into the socket with the icon and you are ready to go.
  • Page 11 custom greetings, receive messages, and set up multiple voice “mailboxes.” You can even access your voice messages remotely. Your modem will automatically detect incoming fax/data/voice calls and route them appropriately.

  • Page 12: Hardware Installation (Read Me First)

    Hardware Installation (Read Me First) • Installation of the modem card in a Australian Safety Instructions DTE (computer) which does not require a tool to open the cover • The modem card must only be used (lid), will render the product in data terminal equipment (DTE), approval permit void.
  • Page 13 • Please attach the label provided with the modem card to your DTE (computer). The label reads: Disconnect the telephone line before opening the cover (lid) of the DTE (computer). Do not connect the customer equipment (modem) to the telephone line, while the cover (lid) of the DTE (computer) is open.

  • Page 14: Installing The Modem With Windows® 95, Windows 98, And

    Installing the modem with Windows® 95, Windows 98, and Windows NT 4.0 usage correctly. Your modem requires Plug and Play (PNP) Installation one COM port and one IRQ setting. Simply plug your new modem into your computer, power up, and be ready to work.
  • Page 15 Remove the cover of the To avoid being shocked, make sure your computer and all peripheral devices are computer.Refer to your computer turned off and unplugged. manufacturer’s manual, if you need instructions. Your modem is designed as a PCI Before installing your modem, write its card.
  • Page 16 Find an empty PCI expansion slot that is at least as long as the silver edge of your modem. (PCI slots are white and usually shorter than ISA slots.) Unscrew and remove the expansion slot cover. It is the long narrow piece of metal that keeps dust from entering through the opening perpendicular to the slot.
  • Page 17 expansion slot. Push down gently to use for the modem, disconnect the until the modem snaps into the slot. telephone cord from the socket. You need to apply a little pressure to The phone socket you use must be for seat the modem properly.
  • Page 18 If you want to use a telephone on the You cannot use the modem and a same line as the modem when the phone at the same time if they modem is not in use, plug the share the same telephone line. telephone and modem cable into the As your modem is a voice modem, it telephone adapter supplied with the...

  • Page 19: Installing Modem Drivers With Windows 95

    • Windows 95 - page 13 Installing Modem Drivers with • Windows 98 - page 16 Windows 95 • Windows NT - page 20 When you see this screen, • if you have a CD-ROM that contains your modem’s drivers, insert the CD-ROM into your CD- ROM drive.
  • Page 20 After Windows has finished copying If this screen does not appear, refer to files, the installation wizard will “Plug and Play Does Not Detect Your Modem” on page 36. search for “Wave Device for Voice Modem”. Click on Finish to continue Click Finish.
  • Page 21 setting when you install your Click the Windows Start button and communications software. point to Settings. Then click Control Panel. COM Port_________ Double-click the Modem icon. Click More Info…. The modem’s status screens should appear in the In the “Modems Properties” screen, box.

  • Page 22: Installing Modem Drivers With Windows 98

    After you install your communications Installing Modem Drivers with software, you are ready to use the modem. Windows 98 When you see this screen, Windows has detected the modem. Click Next. If this screen does not appear, go to “Plug and Play Does Not Detect Your Modem”...
  • Page 23 • if you have a disk that contains Make sure the Search for the best driver for your device option is your modem’s drivers, check the checked. Then click Next. Floppy disk drives option and insert the disk into your disk drive. When you see the following screen: •...
  • Page 24 Click Finish. After Windows has finished copying When Windows is finished copying files, the installation wizard will look for files, you should verify that the the “Wave Device for Voice Modem”. modem installation was a success. Click on “Next” to continue and please Click the Windows Start button and repeat process from Step 2.
  • Page 25 In the “Modems Properties” screen, You are ready to install communications you should see a description of your software. Refer to the manual of the modem. This means the installation communications software for instructions on installation. was a success. Click OK. If you do not see your modem listed, the After you install your communications installation was unsuccessful.

  • Page 26: Installing Modem Drivers With Windows Nt

    The resource page contains the Installing Modem Drivers with configuration information of your modem in Windows NT. COM port, Windows NT 4.0 without PNP I/O address, and Interrupt Request Enabled Line are the three resources that may After installing the modem, turn on require adjustment.

  • Page 27: Installing Modem Drivers With Windows Nt 4.0 With Pnp Enabled

    If you need to uninstall the modem, Installing Modem Drivers with rerun the setup.exe program from the Windows NT 4.0 with PNP installation disk. Enabled You are ready to install communications After installing the modem, turn on software. Refer to the manual of the your Windows NT workstation.
  • Page 28 available resources and entered them. Click OK. In the Select Device If you want to use other settings, window your modem’s model name change them now. should appear. Click on your modem and then click When this is complete, click OK. Please select your relevant country A screen will indicate that the files followed by OK.
  • Page 29 You are ready to install communications software. Refer to the manual of the communications software for instructions on installation. After you install your communications software, you are ready to use the modem.

  • Page 30: Uninstalling The Modem With Windows® 95, Windows 98, And Windows Nt 4.0

    Uninstalling the modem with Windows® 95, Windows 98, and Windows NT 4.0 The process for removing your modem Click on the Port Settings tab. and from your computer differs whether click on Uninstall. your operating system is Windows 95x Click OK to remove the device and or Windows NT.

  • Page 31: Windows Nt 4.0

    Remove the modem from its 6. When your computer is shut down, expansion slot. turn it off. Plug your computer’s power cord 7. Unplug the computer’s power cord back into the computer. from the computer. 8. Remove the computer’s cover. 9.

  • Page 32: Troubleshooting

    Troubleshooting Read This First! Click Windows Start, point to Settings, and click Control Panel. Double-click the Modems icon. Click the Diagnostics tab. Click on the COM port that your modem is assigned to, so that it is highlighted. If you do not see your modem on this screen, you need to shut down the computer and uninstall the modem.
  • Page 33 PROBLEM The computer or software will not recognize the modem. POSSIBLE SOLUTION You may have a COM port/IRQ conflict. Right-click the My Computer icon on your desktop. Click Properties. Click the Device Manager tab. • If you see a yellow exclamation point over your modem, you have a resource conflict, and it is probably an IRQ conflict.
  • Page 34 When the “Confirm Device Removal” screen disappears, shut down Windows and turn off your computer. Unplug the computer from its electrical outlet. Remove the cover of the computer, physically remove the modem from its expansion slot, and replace the cover. Plug the computer back into the electrical outlet, and turn it on.
  • Page 35 After you have made these changes, reinstall your modem following the directions in the “Installing the modem with Windows 95, Windows 98, and Windows NT” chapter. Once your modem is properly installed, make sure you have the correct COM port and IRQ settings in your software and/or in the Windows Device Manager.
  • Page 36 PROBLEM The modem will not go off hook to dial or does not answer the phone. POSSIBLE SOLUTION You may have plugged your modem’s phone cord into a digital line. 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 your phone line is digital.
  • Page 37 POSSIBLE SOLUTION You may have a poor line connection. Place the call again. Calls are routed differently each time. POSSIBLE SOLUTION If you have voice mail, your dial tone may be altered because messages are waiting. Retrieve your voice mail messages to restore your normal dial tone. POSSIBLE SOLUTION Your software may not have auto answer enabled.
  • Page 38 PROBLEM Both modems sound like they are exchanging carrier signals, but fail to establish a connection. POSSIBLE SOLUTION You may have a poor line connection. Place the call again. Calls are routed differently each time.
  • Page 39 PROBLEM Your 56K modem cannot achieve a 56K Internet connection. POSSIBLE SOLUTION This modem is capable of 56 Kbps downloads. However, due to varying line conditions, the actual speeds you experience may be lower. Uploads from users to server equipment travel at speeds up to 31.2 Kbps.
  • Page 40 PROBLEM Errors are constantly occurring in your V.17 fax transmissions. POSSIBLE SOLUTION Your modem initialisation string may be insufficient for fax transmissions. In terminal mode, type the following initialisation string: AT&H3&I2&R2S7=90S36=0 then press ENTER. The standard string for faxing is AT&F1S36=0. POSSIBLE SOLUTION 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.
  • Page 41 POSSIBLE SOLUTION You may be trying to fax a compressed file. Decompress the file using the application with which it was compressed. Then open it in the application with which it was created. Select your fax software as the printer and then print the file. PROBLEM Your communications software fails to initialize the modem.
  • Page 42 PROBLEM Plug and Play (PNP) does not detect your modem. You have installed the modem and Windows has restarted, but you see only your normal desktop. You do not see any screens indicating new hardware has been detected. POSSIBLE SOLUTION The Plug and Play installation was not successful.
  • Page 43 • If you do not see the new hardware screens, continue with step 6. Click Windows Start Point to Settings Click Control Panel. Double-click the System icon. Click the Device Manager tab on the “System Properties” screen. Look for “Other Devices” or “Unknown Devices” in the list that appears. •...
  • Page 44 Restart the computer and continue with the on-screen instructions. If the computer does not detect the modem after this second restart, contact your computer manufacturer for technical assistance.

  • Page 45: Glossary

    Glossary analogue signals Cross references are printed in boldface. A variety of signals and wavelengths Cross references with items in the Data that can be transmitted over Commands found in the “Technical communications lines such as the sound Reference” section are printed in italics. of a voice over the phone line.
  • Page 46 application ASCII A computer program designed to American Standard Code for perform a specific function, such as a Information Interchange is a code used word processing or organizing data into to represent letters, numbers, and special a spreadsheet. characters, such as $, !, and /. asynchronous transmission Automatic Repeat reQuest is a general Data transmission in which the length of...
  • Page 47 baud rate auto-answer A term used to measure the speed of an In this setting the modem can pick up analogue transmission from one point to the phone line when it detects a certain another. Although not technically number of rings. See S-register S0 in the accurate, baud rate is commonly used to “Technical Reference”...
  • Page 48 channels using telephone channel to 8-bit units or characters. One modems are established at set bit rates, kilobyte (KB) is equal to 1,024 bytes or commonly 2400, 4800, 9600, 14,400, characters; 640 KB indicates 655,360 28,800 and higher. bytes or characters. bits per second (bps) carrier This is the bits (binary digits) per...
  • Page 49 class 1 and 2.0 character International standards used between fax A representation, coded in binary application programs and faxmodems digits, of a letter, number, or other for sending and receiving faxes. symbol. characters per second (CPS) cyclic redundancy checking (CRC) A data transfer rate generally estimated An error-detection technique consisting from the bit rate and the character...
  • Page 50 A type of communications in which Data Communications (or Circuit- computers are able to exchange data Terminating) Equipment is equipment over an electronic medium. such as dial-up modems that establish and control the data link via the data compression table telephone network.
  • Page 51 detect phase Signals that are discrete and uniform. In In the ITU-T V.42 error-control this manual, the term refers to the protocol, the first stage in establishing if binary digits 0 and 1. These signals are both modems attempting to connect in contrast with analogue signals.
  • Page 52 duplex facsimile Duplex indicates a communications A method for transmitting the image on channel capable of carrying signals in a page from one point to another. This is both directions. See half duplex, full commonly referred to as fax. duplex. fax mode The mode in which the faxmodem is Electronic Industries Association (EIA)
  • Page 53 frame refer to activation of the online local A data communications term for a echo, which causes the modem to send a block of data with header and trailer copy of the transmitted data to the information attached. The added screen of the sending computer.
  • Page 54 LAPM MNP protocols, but the most commonly Link Access Procedure for Modems is used one ensures error-free transmission an error-control protocol defined in through error detection (CRC) and ITU-T Recommendation V.42. Like the retransmission of erred frames. MNP protocols, LAPM uses cyclic redundancy checking (CRC) and modem A device that transmits/receives...
  • Page 55 originate mode The mode used by your modem when off/on hook Modem operations that are the initiating an outgoing call to a equivalent of manually lifting a phone destination modem. The transmit/receive receiver (taking it off-hook) and frequencies are the reverse of the called replacing it (going on-hook).
  • Page 56 A system of rules and procedures governing communications between two Random Access Memory is memory that or more devices. Protocols vary, but is available for use when the modem is communicating devices must follow the turned on, but that clears of all same protocol in order to exchange information when the power is turned data.
  • Page 57 remote echo start/stop bits A copy of the data received by the These signalling bits are attached to a remote system, returned to the sending character before and after the character system, and displayed on the screen. is transmitted during asynchronous Remote echoing is a function of the transmission.
  • Page 58 terminal mode V.17 fax Software mode that allows direct An ITU-T standard for making communication with the modem. This facsimile connections at 14,400 bps, mode is also known as command mode. 12,000 bps, 9600 bps, and 7200 bps. throughput V.21 The amount of actual user data An ITU-T standard for modems transmitted per second without the...
  • Page 59 V.22bis V.29 An ITU-T standard for modem An ITU-T standard for facsimile communications at 2400 bps. The operations that specifies modulation at standard includes an automatic link 9600 bps, with fallback to 7200 bps. negotiation fallback to 1200 bps and V.32 compatibility with Bell 212A/V.22 An ITU-T standard for modem...
  • Page 60 forward (switch back up) when line The ITU-T standard for 56 Kbps conditions improve. modem communications. See online fall back/fall forward. Xmodem V.34 The first of a family of error control An ITU-T standard that currently allows software protocols used to transfer files data rates as high as 33,600 bps.
  • Page 61 Zmodem can use either checksums or CRC for This is similar to Xmodem and error checking. Ymodem, except it includes batch transfer, the ability to recover from a Ymodem G This is similar to the Ymodem, except it partially complete transfer, an autostart relies on the modem for error checking, feature, and improved efficiency.

  • Page 63: Technical Reference

    Technical Reference Typing Commands • In terminal mode, type commands in either upper or lower case, not a combination. Use the Backspace key to delete errors. (You cannot delete the original AT command because it is stored in the modem buffer.) •...

  • Page 64: Basic Data Commands

    redial. This does not require the Basic Data Commands AT prefix or a Carriage Return. <control key>S A> Re-executes the last issued Stop or restart help command continuously, until screens. the user intervenes or the <control key>C or command is executed forever. Does not require the AT prefix <control key>K Stop help screens.
  • Page 65 at position n (n = 0−3). U.S./ITU-T answer Phone numbers are sequence stored with the &Zn=s ITU-T answer sequence command U.S. answer tone Tone dial (Comma) Pause, see the Dials the specified phone definition of the S8 number, includes the register to which it is following: linked...
  • Page 66 Sets online local echo of Waits for second dial transmitted data tone (X2 or X4); linked ON/OFF to S6 register Local echo ON; (At Symbol) Dials, waits modem sends a copy of for quiet answer, and data, it sends to the continues (X3 or higher) remote system to your (Dollar Sign) Displays a...
  • Page 67 Controls speaker Displays the following volume (available on information: internal modems only) Four-digit product code Lowest volume Results of ROM Low volume checksum Medium volume Results of RAM High volume checksum Product type Operates speaker Current modem settings Speaker always Nonvolatile memory (NVRAM) settings Speaker ON until...
  • Page 68 Returns online and Sr.b=n Sets bit .b of register r retrains to n (0/OFF or 1/ON) Displays/suppresses result Sr=n Sets register r to n codes Displays contents of S- Displays result Register r codes Quiet mode; no result Displays a list of the S- codes Registers Displays result codes...
  • Page 69 Sets result code displayed, default is X4 Xn Setting Result Codes • • • • • 0/OK • • • • • 1/CONNECT • • • • • 2/RING • • • • • 3/NO CARRIER • • • • •...
  • Page 70 Xn (Continued) Xn Setting Result Codes • • • • 91/CONNECT 21600 • • • • 99/CONNECT 24000 • • • • 103/CONNECT 26400 • • • • 107/CONNECT 28800 • • • • 151/CONNECT 31200 • • • • 155/CONNECT 33600 •...
  • Page 71 Xn (Continued) Xn Setting Result Codes • • • • 280/CONNECT 38666 • • • • 284/CONNECT 40000 • • • • 188/CONNECT 41333 • • • • 192/CONNECT 42666 • • • • 196/CONNECT 44000 • • • • 200/CONNECT 45333 •...
  • Page 72 Xn (Continued) Xn Setting Result Codes • • • Adaptive Dialling • • Wait for 2nd Dial Tone (W) • • Wait for Answer (@) • • Fast Dial...
  • Page 73 Resets modem to Selects power-on/reset NVRAM profile 1 default configuration Resets modem to Use profile 0 setting in factory default profile 0 NVRAM (&F0) Default is profile 1 Resets modem to setting in NVRAM factory default profile 1 Use factory (&F1) configuration 0 Resets modem to...

  • Page 74: Extended Data Commands

    V42bis/MNP5 (data Extended Data Commands compression) &$ Displays a list of &Bn Manages modem’s serial port ampersand (&) rate commands &B0 Variable, follows connection rate &An Enables/disables additional result code subsets, see Xn &B1 Fixed serial port &A0 ARQ result codes rate disabled &B2...
  • Page 75 &Dn Controls Data Terminal &Gn Sets Guard Tone Ready (DTR) &G0 No guard tone, operations U.S. and Canada &D0 DTR override &G1 550 Hz guard tone, &D1 DTR toggle causes some European online Command mode countries, requires B0 &D2 Normal DTR operations setting &G2 1800 Hz guard tone, U.K., requires B0...
  • Page 76 &H3 Hardware and software &Kn Enables/disables data flow control compression &In Sets Receive Data (RD) &K0 Data compression software flow control, disabled see also &Rn &K1 Auto &I0 Software flow control enable/disable disabled &K2 Data compression &I1 XON/XOFF signals to enabled your modem and remote &K3 MNP5 compression...
  • Page 77 &M4 Normal/ARQ &N3 2400 bps &M5 ARQ mode &N4 4800 bps &N5 7200 bps &N6 9600 bps &Nn Sets connect speed, if &N7 12,000 bps connection cannot be made at &N8 14,400 bps this speed, the modem will &N9 16,800 bps hang up.
  • Page 78 &N22 34,666 bps &Pn Sets pulse (rotary) dial &N23 36,000 bps make/break ratio &N24 37,333 bps &P0 U.S./Canada ratio, &N25 38,666 bps 39%/61% &N26 40,000 bps &P1 U.K. ratio, &N27 41,333 bps 33%/67% &N28 42,666 bps &N29 44,000 bps &N30 45,333 bps &N31 46,666 bps &N32 48,000 bps &N33 49,333 bps...
  • Page 79 &Rn Sets Receive Data (RD) &Tn Begins test modes hardware flow control, &T0 Ends testing Request to Send (RTS), see &T1 Analog Loopback also &Hn &T2 Reserved &R0 Reserved &T3 Local Digital Loopback &R1 Modem ignores &T4 Enables Remote Digital Loopback &R2 Received Data to &T5...
  • Page 80 &Un When set above 0, the value chosen from the table sets the floor connect speed (the lowest acceptable connect speed). If a connection cannot be made at or above this speed, the modem will hang up. This command can also be used in conjunction with &Nn.
  • Page 81 &U0 No restrictions on &U16 33,600 bps the minimum &U17 28000 bps speed for the &U18 29333 bps connection &U19 30666 bps &U1 300 bps &U20 32000 bps &U2 1200 bps &U21 33,333 bps &U3 2400 bps &U22 34666 bps &U4 4800 bps &U23 36000 bps &U5 7200 bps...
  • Page 82 &Yn Sets break handling &Un (Continued) &Y0 Destructive, but does &U33 49333 bps not send break &U34 50666 bps &Y1 Destructive, expedited &U35 52000 bps &Y2 Nondestructive, &U36 53333 bps expedited &U37 54666 bps &Y3 Nondestructive, &U38 56000 bps unexpedited &U39 57333 bps &Zn=sWrites phone number &Wn Writes current...
  • Page 83 &Zn? Displays the phone number stored at position n (n = 0− − 3) &ZL? Displays the last executed dial string Escapes to online- command mode...

  • Page 84: S-Registers

    S-Registers To change a setting, use the ATSr=n command, where r is the register and n is a decimal value from 0 − 255 (unless otherwise indicated). Register Default Function Sets the number of rings on which to answer in Auto Answer Mode When set to 0, Auto Answer is disabled Counts and stores the number of rings from an incoming call S0 must be greater than 0...
  • Page 85 Register Default Function Sets the number of seconds the modem waits before dialling If Xn is set to X2 or X4, this is the time-out length if there is not a dial tone Sets the number of seconds the modem waits for a carrier May be set for much longer duration if, for example, the modem is originating an international connection Sets the duration, in seconds, for the pause (,) option in the Dial...
  • Page 86 Register Default Function Dropping DTR hangs up the modem Sets the duration and spacing, in milliseconds, for tone dialling Sets the duration, in fiftieths of a second, of the guard time for the escape code sequence (+++) 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 16) Value...
  • Page 87 Register Default Function S13 (Continued) At power on/reset, Auto Dial the number stored in NVRAM at position 0 Reserved Disable quick retrains Disconnect on escape code *The 1.5K-byte non-ARQ buffer allows data transfer with Xmodem- and Ymodem- type file transfer protocols without using flow control. The 128-byte option lets remote users with slower modems keep data you are sending from scrolling off their screens When remote users send your computer an XOFF (Ctrl-S) and you...
  • Page 88 Register Default Function Bit-mapped register setup To set the register, see instructions for S13 Value Result Disable ARQ/MNP for V.22 Disable ARQ/MNP for V.22bis Disable ARQ/MNP V.32/V.32bis Disable MNP handshake Disable MNP level 4 Disable MNP level 3 MNP incompatibility Disable V.42 operation To disable V.42 detect phase, select the total of the values for bits 3 and 7.
  • Page 89 Register Default Function Test timer for &T loopback testing Sets the time in seconds of testing before the modem automatically times out and terminates the test When set to 0, the timer is disabled Valid range is 1-255 Sets the duration, in minutes, for the inactivity timer The timer activates when there is no data activity on the phone line;...
  • Page 90 Register Default Function Sets the duration, in hundredths of a second, that DTR must be dropped so that the modem does not interpret a random glitch as a DTR loss Most users will want to use the default This register is useful for setting compatibility with older systems running under older operating software Reserved Bit-mapped register setup...
  • Page 91 Register Default Function S27 (Continued) Value Result Disables 2100 Hz answer tone to allow two V.42 modems to connect faster Enables V.23 fallback mode Disables V.32bis mode Disable V.42 selective reject Software compatibility mode This setting disables the codes and displays the 9600 code instead The actual rate of the call can be viewed on the ATI6 screen...
  • Page 92 Register Default Function Eliminates the V.32 answer tones for a faster connection Default item, all times are in tenths of seconds Disables all connections except V.32 at 9600 bps Sets the duration, in tenths of a second, of the V.21 answer mode fallback timer Reserved Reserved...
  • Page 93 Register Default Function S28 (Continued) Disable V.90 modulation. Reserved. Bit-mapped register setup To set the register, see the instructions for S13 Value Result Disable 2400 symbol rate Disable 2743 symbol rate Disable 2800 symbol rate Disable 3000 symbol rate Disable 3200 symbol rate Disable 3429 symbol rate Reserved Disable shaping...
  • Page 94 Register Default Function S34 (Continued) Value Result Disable 8S-2D trellis encoding Disable 16S-4D trellis encoding Disable 32S-2D trellis encoding Disable 64S-4D trellis encoding Disable non-linear coding Disable TX level deviation Disable Pre-emphasis Disable Pre-coding S35-S37 Reserved...
  • Page 95 Register Default Function 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.

  • Page 96: Fax Commands

    Fax Commands +FCLASS=n Sets the mode of operation FCLASS=0 Data mode FCLASS=1 Group 3 Facsimile Service Class 1mode FCLASS=2.0 Group 3 Facsimile Service Class 2.0 mode FCLASS? Displays the current FCLASS mode (see mode descriptions above) +FCLASS=? Displays the FCLASS mode options (see mode descriptions above) +FTS=n Stops the fax transmission.
  • Page 97 Fax Commands (Continued) +FRS=n Makes the modem wait for a specified length of silence before sending OK to the screen. The pause is set in10 millisecond intervals. n is the number of 10 millisecond intervals that pass before OK appears.(n=0-255) Note: This command terminates with OK when either the specified amount of silence is detected or when the user types anything (which is ignored).

  • Page 98: Screen Messages

    Fax Commands (Continued) +FRM=n Receives data using the modulation specified byn.(n = 3, 24, 48, 72, 97, 98, 121, 122, 145, or 146) Note: See the “Screen Messages” table at the end of this section for explanation of messages that appear in response to this command.
  • Page 99 Message Message Description The previous command has been processed successfully. CONNECT The modem has just connected to another modem. RING Reports the receipt of a network altering ring. NO CARRIER No carrier is being received from the modem. ERROR The previous command line has not been recognized or was completed abnormally.

  • Page 100: Compliance Information

    Compliance Information Compliance Warning Applications software shall be configured so that no more than 3 attempts are made to establish a connection to a given number. (Note: If the modem can detect service tones, up to ten attempts can be made.) There must be at least 2 seconds between call attempts.

  • Page 101: Interconnecting Ports

    Interconnecting Ports Interconnection circuits should be such that the equipment continues to comply with the requirements of AS3260 1.2.8.5 for SELV circuits. Command Restrictions The modem commands shown below have their default values and range limits set to meet ACA approval requirements.
  • Page 102 Command Description Default Range Bell/ITU-T B0 only &G Guard Tone &G2 &G2 only &P Pulse Dial Ratio &P2 &P2 only Auto Answer 0, 2-5 Pre-Dial Pause Wait for Carrier 20-255 Dial Pause 2-255 Tone Dial Speed 75-255 Bit-Mapped Register 0-255...

  • Page 103: Regulatory Information

    Regulatory Information Installation of modem in host PC Network Compatibility Declaration The user should ensure that the power drawn by the modem together with any auxiliary This equipment is designed to work apparatus drawing power from the host lies satisfactorily on all European Union PSTN within the rating of the host power supply.

  • Page 104: Note

    Note: CE Compliance Although this equipment can use either loop For connection to the Public Switched disconnect or DTMF signaling, only the Telephone Network performance of the DTMF signaling is subject to regulatory requirements for correct operation. It Electromagnetic Compatibility is therefore strongly recommended that the This device complies with the following equipment is set to use DTMF signaling, which...

  • Page 105: Operation Of Pan-European Approved Modems

    The ports on this modem have the CE0560X (prior to April 8, 2001) following safety status: Telephone line connector = TNV-3 (after April 8, 2001) All other ports = SELV then the following notice should be These definitions are classified as per observed: safety standard: EN 60950/A4 3/97 This equipment has been approved to CTR...

  • Page 106: Warranty

    Warranty HARDWARE: 3Com Corporation warrants its hardware products to be free from defects in workmanship and materials, under normal use and service, for the following lengths of time from the date of purchase from 3Com or its authorized reseller: 56K Voice Internal PCI 5 years Other hardware products One year*...
  • Page 107 SOFTWARE: 3Com Corporation warrants that the software programs licensed from it will perform in substantial conformance to the program specifications therefor for a period of ninety (90) days from the date of purchase from 3Com or its authorized reseller. 3Com warrants the media containing software against failure during the warranty period.
  • Page 108 A product is considered a “Heritage 3Com product” if it is a member of a product family which was manufactured by 3Com prior to its merger with US Robotics Corporation. This Year 2000 limited warranty does not apply to Heritage US Robotics Corporation products.
  • Page 109 product, deliver to Customer an equivalent product to replace such product, or if none of the foregoing is feasible, refund to Customer the purchase price paid for such product. Any software update or replaced or repaired product will carry a Year 2000 Warranty for ninety (90) days or until April 1, 2000, whichever is later.
  • Page 110 verified by 3Com, it will be considered dead- or defective-on-arrival (DOA) and a replacement shall be provided by advance replacement. The replacement product will normally be shipped not later than three (3) business days after 3Com’s verification of the DOA product, but may be delayed due to export or import procedures. When an advance replacement is provided and Customer fails to return the defective product to 3Com within fifteen (15) days after shipment of the replacement, 3Com will charge Customer for the replacement product, at list price.
  • Page 111 WARRANTIES EXCLUSIVE: IF A 3COM PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, CUSTOMER'S SOLE REMEDY FOR BREACH OF THAT WARRANTY SHALL BE REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE PAID, AT 3COM'S OPTION. TO THE FULL EXTENT ALLOWED BY LAW, THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES, TERMS, OR CONDITIONS, EXPRESS OR IMPLIED, EITHER IN FACT OR BY OPERATION OF LAW, STATUTORY OR OTHERWISE,...
  • Page 112 LIMITATION OF LIABILITY. TO THE FULL EXTENT ALLOWED BY LAW, 3COM ALSO EXCLUDES FOR ITSELF AND ITS SUPPLIERS ANY LIABILITY, WHETHER BASED IN CONTRACT OR TORT (INCLUDING NEGLIGENCE), FOR INCIDENTAL, CONSEQUENTIAL, INDIRECT, SPECIAL, OR PUNITIVE DAMAGES OF ANY KIND, OR FOR LOSS OF REVENUE OR PROFITS, LOSS OF BUSINESS, LOSS OF INFORMATION OR DATA, OR OTHER FINANCIAL LOSS ARISING OUT OF OR IN CONNECTION WITH THE SALE, INSTALLATION, MAINTENANCE, USE, PERFORMANCE, FAILURE,...
  • Page 113 DISCLAIMER: Some countries, states, or provinces do not allow the exclusion or limitation of implied warranties or the limitation of incidental or consequential damages for certain products supplied to consumers or the limitation of liability for personal injury, so the above limitations and exclusions may be limited in their application to you. When the implied warranties are not allowed to be excluded in their entirety, they will be limited to the duration of the applicable written warranty.

  • Page 114: Contact Details

    Contact details Phone : +44 (0) 870 844 4546 Fax : +44 (0) 870 844 4547 BBS : +44 (0) 118 969 2200 E-Mail : uk_modemsupport@3com.com WWW : http://www.3com.co.uk...

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