56K PROFESSIONAL MESSAGE MODEM User’s Guide and Reference PN 1.024.
This manual covers installation and operating instructions for the following modem: 3Com U.S. Robotics 56K* Professional Message Modem external The material contained in this document is for information purposes only and is subject to change without notice. 3Com makes no representations or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for any particular purpose.
T ABLE OF CONTENTS Welcome to 56K Information Access Product Features Summary of Features Answering Machine Features Personal Greeting Message Secondary Message Voice Message Retrieval Deleting Messages Speakerphone Features Facsimile (Fax) Features Fax Forwarding Manual Reception of a Fax Call Caller ID Feature Toll Saver Feature Modem Push Buttons Front Panel Lights Telephone Handset DTMF Digits for Remote Message Retrieval 1 2 3 5 5 8 9 12 12 13 13 14 14 14 15 16 18
T ABLE OF CONTENTS Installation of the Professional Message Modem with Windows 95 Determining Your Version of Windows 95 How to Connect the Modem to the Computer Installing Modem Drivers with Windows 95: Versions 950 and 950a (Moving Through the "New Hardware Found" Screens) Version 950b (Using the Update Device Driver Wizard Screens) 19 19 20 Installation of the Professional Message Modem with Windows 3.x 31 Software Installation Windows 95 Windows 3.
T ABLE OF CONTENTS Glossary 47 Technical Reference Modem Push Buttons Telephone Handset DTMF Digits for Remote Message Retrieval Front Panel Lights Typing Commands Basic Data Commands Extended Data Commands S-Registers Fax Commands Screen Messages The Serial Interface Serial Interface Pin Definitions 58 58 59 60 61 62 68 76 84 86 87 88 Special Notes - Australian Users Compliance Warning Interconnecting Ports Command Restrictions Australian Safety Instructions 89 89 90 91 92
WELCOME TO 56K* INFORMATION ACCESS The International Telecommunication Union (ITU) decides the technical protocols that communications devices must use to operate with each other. Modems that comply with ITU standards can “talk” to other standards-compliant modems and fax machines worldwide. The ITU has determined a worldwide standard for 56K modem technology, V.90. With a 3Com U.S. Robotics modem, you can get 56K Internet access from any service provider who offers the ITU V.
PRODUCT FEATURES Modulation Schemes ITU-T V.90 3Com 56K technology ITU-T V.34+ ITU-T V.34 ITU-T V.32 bis ITU-T V.32 ITU-T V.23 ITU-T V.22 bis ITU-T V.22 Bell 212A ITU-T V.21 Bell 103 Error Control and Data Compression Schemes ITU-T V.42 ITU-T V.42 bis MNP 2-5 2 Fax Modulation Schemes ITU-T V.17 ITU-T V.29 ITU-T V.27ter ITU-T V.21 Fax Standards EIA 578 Class 1 FAX EIA 592 Class 2.0 FAX V.
PRODUCT FEATURES Summary of Features Key Features of the 56K Professional Message Modem The 56K Professional Message Modem is the first product to incorporate a digital answering machine, built-in speakerphone and external modem into one design. The 56K Professional Message Modem also features a bank of flash memory that allows you to receive fax and voice messages without the intervention of the PC. Voice messages can be received even when the PC is not switched on.
PRODUCT FEATURES • Is capable of receiving and storing incoming fax and voice messages without any DTE (Data Terminal Equipment) intervention. • Allows you to forward your faxes to a predefined phone number. • Has Caller ID. • Can transfer stored messages to the DTE at a later time. • Enables remotely stored voice messages to be accessed through a dial-up connection or by using the push buttons on the top of the modem. • Offers a built-in condenser microphone.
PRODUCT FEATURES Answering Machine Features Before You Begin Your new Professional Message Modem is set up from the factory as an answering machine with the fax capability disabled. In order to use the fax features, a PC is necessary to adjust default settings. Also, you will need to set a password, using a PC, for use with the remote feature of the modem. Refer to the software package to choose your 4-digit password.
PRODUCT FEATURES If the recording limit of 15 seconds is reached, the recording will stop and a dialogue window will display a warning message. If the recording limit of 15 seconds is reached, the recording will stop and a dialogue window will display a warning message. 2. Click Stop when you have finished. 4. Click Stop when you have finished. 3. To listen to your message, press Play from the supplied software application. 4.
PRODUCT FEATURES 2. Press STOP/PLAY when you have finished your personal message. 3. Your message will automatically play back after a tone. A tone will sound if the recording limit is reached. Handset mode 1. Pick up your handset before pressing REC/>> >>. 2. Press REC/>> >>, hold for 2 SECONDS, listen for the tone, release the button, and recite your message. 3. Press STOP/PLAY when you have finished your personal message. 4. Your message will automatically play back after a tone.
PRODUCT FEATURES Secondary Message You can record a second message, which will be played instead of your personal greeting message, when your message box is full. This additional message is recorded using the supplied software application. You may use either the internal microphone (handsfree mode) or the connected handset (handset mode from the application software). Hands-free mode 1. Within the Independent Mode Message Full Screen, click Record, and recite your secondary message.
PRODUCT FEATURES 5. To listen to your message, press the Play button from within the application software. 6. Once you have recorded your secondary message, click Download to send your secondary message to the modem. 7. Make sure you have completed your entire message before hanging up the handset or clicking Stop, otherwise your message will not be recorded. Once you have started recording your message with the handset, you cannot switch to hands-free mode.
PRODUCT FEATURES 2. Click Play to play back your message through the internal speaker. 3. Click Stop to end message playback. 4. Playback stops automatically at the end of the message. Handset mode 1. Select Handset as the Input & Output device from within the supplied application software. 2. Pick up your handset before clicking Play. 3. Click Play to playback your message. 4. Hang up the handset to stop the play back of your message.
PRODUCT FEATURES Volume down (∇ ∇ ) to adjust the volume in the hands-free and handset modes. 3) Retrieving voice messages remotely OPTION 9 ACTION Repeat the new message count. 1 Playback all new messages. 1. Pick up the handset of your touch tone telephone and dial the number of the phone line to which your modem is connected. 2 Playback all stored messages, new and old. 3 Skip to next voice message. 2. Enter your 4-digit password after the tone. 6 Repeats current voice message. 3.
PRODUCT FEATURES Deleting Messages The Professional Message Modem memory has limited space to store messages. If this limit is reached during the reception of a message, the message is cut off and flagged. No new messages will be stored until the old messages are erased. You can free up memory space in three ways: 1. Load the supplied application software to retrieve and erase all the voice and/ or fax messages in memory, 2. Press DEL/<< << on the modem buttons for 2 SECONDS, and 3.
PRODUCT FEATURES Facsimile (Fax) Features Fax Forwarding Faxes can be forwarded to a predefined phone number. The faxes will continue to be forwarded until the feature is disabled. The faxes can be redirected to a different number at any time by changing the predefined number through the software application. The fax forwarding feature is controlled through the software application or remotely.
PRODUCT FEATURES at any time by changing the predefined number through the software application. The Independent mode fax forwarding feature is controlled through the software application or remotely. A call answered with the handset or speakerphone button, which turns out to be a fax, will not be aborted, if you press the STOP/PLAY button for 2 SECONDS. This allows the modem to automatically receive the incoming fax.
PRODUCT FEATURES Number of Preset Rings Number of rings with toll saver enabled or with new voice messages 3* 2 4 2 5 3 6 4 *PTT requirement of certain countries requires that the modem answer after 2 rings.
PRODUCT FEATURES DEL/<< << Delete/Repeat Front Panel Lights 1) Erase messages, The PMM has five LEDs—two of which are bicolor (red/green). 2) Repeats the current message. REC/>> >> Record/Fast Forward 1) Record your personal message, 2) Skip to the next message. PWR/MEM (Bicolor LED) Power/Message Memory 1) Constant red indicates that auto answer is off and the modem will not answer any calls when the PC is off.
PRODUCT FEATURES 3) Solid amber indicates that you have retrieved your messages, but that they have not been deleted from memory. RD Received Data Flickers red when the modem is receiving data. SD Send Data Flickers red when the modem is sending data. OH Off Hook Constant red when the modem is off-hook.
PRODUCT FEATURES Telephone Handset DTMF Digits for Remote Message Retrieval Digit(s) Function 1 2 3 44 5 6 7 8 9 0 * # 18 Starts playback of all new voice messages Starts playback of all stored voice messages (new and old) Skips to the next voice message Deletes all old voice messages in memory Enables/disables fax forwarding feature Repeats the current voice message Records personal message Not used Repeats the new message count 1) Stops playback of all voice messages 2) Stops the recording of your per
INSTALLATION OF THE PROFESSIONAL MESSAGE MODEM WITH WINDOWS 95 You will need these items from your 3Com U.S. Robotics Professional Message Modem box: Determining Your Version of Windows 95 1. Click the My Computer icon on your desktop with the right mouse button. modem power adaptor phone lead serial cable 2. Click Properties. 3. In the “System Properties” screen, look at the system information under the General tab (circled in the screen image).
INSTALLATION OF THE PROFESSIONAL MESSAGE MODEM WITH WINDOWS 95 Write down your version of Windows. Windows 95 version __________ Click OK. How to Connect the Modem to the Computer 1. Turn off your computer and any attached devices, such as a printer, monitor, keyboard, and mouse. 2. Connect the serial cable to the modem and to the computer. When looking for your serial port on the back of your computer, look for ports labeled COM, MODEM, RS-232, or SERIAL. Do not select AUX, GAME, LPT, or PARALLEL.
INSTALLATION OF THE PROFESSIONAL MESSAGE MODEM WITH WINDOWS 95 Installing Modem Drivers with Windows 95: Versions 950 and 950a Moving Through the “New Hardware Found” Screens 6. Plug the power cords, cables, and peripherals back into the computer and turn on the computer. 1. When Windows 95 restarts, it should detect the modem. If it does, you will see the following screen. 7. Start Windows 95.
INSTALLATION OF THE PROFESSIONAL MESSAGE MODEM WITH WINDOWS 95 Click Driver from disk provided by hardware manufacturer. Then click OK. If this screen does not appear, refer to “If Plug and Play Does Not Detect Your Modem” on page 45. 2. When you see the Install from Disk screen, • If you have a disk that contains your modem’s drivers, insert the disk into your disk drive, usually A. • If you have a CD-ROM that contains your modem’s drivers, insert the CD-ROM into your CD-ROM drive, usually D.
INSTALLATION OF THE PROFESSIONAL MESSAGE MODEM WITH WINDOWS 95 3. Once Windows finishes loading the information from your disk or CD-ROM, verify that the modem installation was a success. When your desktop returns, click the Windows Start button and point to Settings. Then click Control Panel. 4. Double-click the Modems icon (circled in the screen image below).
INSTALLATION OF THE PROFESSIONAL MESSAGE MODEM WITH WINDOWS 95 5. In the “Modems Properties” screen, you should see 56K Professional Message Modem listed. This indicates that your new Professional Message Modem is installed correctly. If this screen does not appear, refer to “If Plug and Play Does Not Detect Your Modem” on page 45. 6. Next, click the Diagnostics tab at the top of the “Modems Properties” screen. Write down the COM setting for your modem in the space below.
INSTALLATION OF THE PROFESSIONAL MESSAGE MODEM WITH WINDOWS 95 7. Click More Info…. The modem’s status screens should appear in the box. Click OK. Be sure to install software after the modem is installed. Turn to “Software Installation” on page 34 for information about installing communications software. Congratulations! You are ready to start using your 3Com U.S.
INSTALLATION OF THE PROFESSIONAL MESSAGE MODEM WITH WINDOWS 95 Installing Modem Drivers with Windows 95: Version 950b Using the Update Device Driver Wizard Screens 1. When you see the following screen, • If you have a disk that contains your modem’s drivers, insert the disk into your disk drive, usually A. • If you have a CD-ROM that contains your modem’s drivers, insert the CD-ROM into your CD-ROM drive, usually D.
INSTALLATION OF THE PROFESSIONAL MESSAGE MODEM WITH WINDOWS 95 2. When you see the following screen, click Finish. Windows will copy files to your hard drive. 3. When Windows is finished copying files, verify that the modem installation was a success. Click the Windows Start button and point to Settings. Then click Control Panel.
INSTALLATION OF THE PROFESSIONAL MESSAGE MODEM WITH WINDOWS 95 4. Double-click the Modems icon (circled in the screen image below). 28 5. In the “Modems Properties” screen, you should see 56K Professional Message Modem listed. This means that your modem is installed correctly.
INSTALLATION OF THE PROFESSIONAL MESSAGE MODEM WITH WINDOWS 95 If this screen does not appear, refer to “If Plug and Play Does Not Detect Your Modem” on page 45. 7. Click More Info…. The modem’s status screens should appear in the box. Click OK. 6. Next, click the Diagnostics tab at the top of the “Modems Properties” screen. Write down the COM setting for your modem in the space. You may need to know this setting when you install your communications software. COM Port_________ Click OK.
INSTALLATION OF THE PROFESSIONAL MESSAGE MODEM WITH WINDOWS 95 Be sure to install software after the modem is installed. Turn to “Software Installation” on page 34 for information about installing communications software. Congratulations! You are ready to start using your 3Com U.S.
INSTALLATION OF THE PROFESSIONAL MESSAGE MODEM WITH WINDOWS 3.X You will need these items from your 3Com U.S. Robotics Professional Message Modem box: modem serial cable phone lead power adaptor How to Connect the Modem to the Computer 1. Turn off your computer and any attached devices, such as a printer, monitor, keyboard, mouse. 2. Connect the serial cable to the modem and to the computer.
INSTALLATION OF THE PROFESSIONAL MESSAGE MODEM WITH WINDOWS 3. X The phone jack you use must be for an ANALOGUE phone line. Most office phones are wired through DIGITAL lines. Be sure you know which type of line you have. The modem will be damaged if you use a digital phone line. 4. Plug the power adaptor that came with the modem into a standard wall jack and insert its plug into the power jack on the modem. 5.
INSTALLATION OF THE PROFESSIONAL MESSAGE MODEM WITH WINDOWS 3. X You are ready to start using your 3Com U.S.
SOFTWARE INSTALLATION Voice Fax, and Data Software (communications software) allows you to send and receive faxes directly from your computer desktop. You can build your own fax directory, send faxes to specified groups of fax numbers, select individual cover pages when necessary, and send individual faxes without exiting your word processing program. Communications software allows you to change settings and issue commands to your modem.
S OFTWARE INSTALLATION Refer to your software manual for the specific installation instructions. The software’s installation program will ask you questions about the modem you are using. You may need the following information when installing a communications software package. Type of Modem Most communications software programs will ask you to select the type of modem you are using. Select a 3Com U.S. Robotics high speed modem. If that selection is not listed, pick Courier Dual Standard, V.32 bis, or V.34.
S OFTWARE INSTALLATION Follow the on-screen instructions to access the COM port settings panel. In this panel you should find the UART chip used. Match the UART type listed in MSD with the serial rate listed in the chart. Select this serial rate in any fax/data programs you use. If this is your UART... Select this serial rate 16550 16450 8250 115.2 or 57.6 Kbps 38.4 Kbps 19.2 Kbps Do not select a 28,800, 14,400, or 12,000 bps serial port rate if offered.
U.S. ROBOTICS MODEM UPDATE WIZARD Your CD-ROM includes the U.S. Robotics Modem Update Wizard. This software is designed to quickly update your modem to a newer version of its current code You can also obtain this software from our World Wide Web page http://www.3com.com.au Complete the instructions in the “Software Installation" section on page 34 of this manual before installing the Modem Update Wizard. Installation 1. Insert the CD into your CD-ROM drive. 2.
U.S. R OBOTICS MODEM U PDATE WIZARD Updating 1. Click the Windows Start button. Point to Programs. Then point to U.S. Robotics Modem Update Wizard and click the Modem Update Wizard selection. (Note: The number that the software dials to connect to the Modem Update Wizard may not be free of charge.) 2. Follow the on-screen instructions to complete the update process. WARNING! To avoid the risk of damaging your modem, do not turn off the modem while it is being updated.
TROUBLESHOOTING Read This First! 1. Click Windows Start, point to Settings, and click Control Panel. 2. Double-click the Modems icon. 3. Click the Diagnostics tab. 4. Click 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. Exit out of the Modems Properties screen by clicking Cancel. Click Start, Shut Down, select the Shut down the computer? option, and then click Yes.
TROUBLESHOOTING PROBLEM The computer or software will not recognise the modem. POSSIBLE SOLUTION Make sure the modem is plugged in and turned on. Use only the power adaptor included with your modem. POSSIBLE SOLUTION You may not be entering modem commands in the proper manner. Type in all upper case (AT) or all lower case (at). POSSIBLE SOLUTION The COM port may not be enabled.
TROUBLESHOOTING 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. POSSIBLE SOLUTION You may have plugged your modem’s phone cord into the wrong jack on the modem. Make sure the phone cord is plugged into a jack labeled with .
TROUBLESHOOTING POSSIBLE SOLUTION You may be using the wrong power adaptor for your modem. Use only the power adaptor that came with your modem. PROBLEM Both modems sound like they are exchange 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. PROBLEM Your 56K modem cannot achieve a 56K Internet connection.
TROUBLESHOOTING POSSIBLE SOLUTION You may have devices between the modem and the phone jack. There should be no line splitters, fax machines, or other devices between the modem and the wall jack. 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&F&H3&I2&R2S7=90 then press ENTER.
TROUBLESHOOTING PROBLEM Your communications software fails to initialise the modem. POSSIBLE SOLUTION Your software’s port settings may be incorrect. Make sure the software’s port settings match those for your modem. POSSIBLE SOLUTION Make sure the modem is plugged in and turned on. Use only the power adaptor included with the modem. POSSIBLE SOLUTION (External modems only) Make sure that you are using an RS-232 modem cable.
TROUBLESHOOTING PROBLEM If 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. Try the following: 1. Click Start and click Shut Down. 2. When asked if you wish to shut down your computer, click Yes. 3. When Windows indicates that it is safe to turn off your computer, turn it off.
TROUBLESHOOTING 8. Click Control Panel. 9. Double-click the System icon. 10.Click the Device Manager tab on the “System Properties” screen. 11. Look for “Other Devices” or “Unknown Devices” in the list that appears. • If you do not see either of these options in the list, contact customer support for technical assistance. • If you do see one of these options, double-click the option and continue with step 12. 12. If the description that appears matches the modem you are trying to install, click Remove.
GLOSSARY Cross references are printed in boldface. Cross references with items in the Data Commands found in the “Technical Reference” section, are printed in italics. application A computer program designed to perform a specific function, such as a word processing or organizing data into a spreadsheet.
GLOSSARY asynchronous transmission Data transmission in which the length of time between transmitted characters may vary. Since the time lapses between transmitted characters are not uniform, the receiving modem must be signaled as to when the data bits of a character begin and then they end. The addition of start/stop bits to each character serves this purpose. auto answer In this setting the modem can pick up the phone line when it detects a certain number of rings.
GLOSSARY buffer A memory area set aside to be used as temporary storage during input and output operations. An example is the modem's command buffer. byte A group of binary digits stored and operated upon as a unit. In user documentation, the term usually refers to 8-bit units or characters. One kilobyte (KB) is equal to 1,024 bytes or characters; 640 KB indicates 655,360 bytes or characters. carrier A tone signifying a connection the modem can alter to communicate data across telephone lines.
GLOSSARY cyclic redundancy checking (CRC) An error-detection technique consisting of a test performed on each block, or frame, of data by both sending and receiving modems. The sending modem inserts the results of its tests in each data block in the form of a CRC code. The receiving modem compares its results with the received CRC code and responds with either a positive or negative acknowledgment.
GLOSSARY dictionary The term used for compression codes built by the V.42 bis data compression algorithm. digital loopback A test that checks the modem's RS-232 interface and the cable that connects the terminal (computer) and the modem. The modem receives data (in the form of digital signals) from the computer or terminal, and immediately returns the data to the screen for verification. digital signals Signals that are discrete and uniform. In this manual, the term refers to the binary digits 0 and 1.
GLOSSARY fax mode The mode in which the faxmodem is capable of sending and receiving files in a facsimile format. See definitions for V.17, V.27ter, V.29. flow control A mechanism that compensates for differences in the flow of data into and out of a modem or other device. See commands &Hn, &In, &Rn. frame A data communications term for a block of data with header and trailer information attached.
GLOSSARY LAPM Link Access Procedure for Modems is an errorcontrol protocol defined in ITU-T Recommendation V.42. Like the MNP protocols, LAPM uses cyclic redundancy checking (CRC) and retransmission of corrupted data (ARQ) to ensure data reliability. local echo A modem feature that enables the modem to display keyboard commands and transmitted data on the screen. See command En. MNP Microcom Networking Protocol is an error-control protocol developed by Microcom, Inc., and now in the public domain.
GLOSSARY parity A simple error-detection method that checks the validity of a transmitted character. Character checking has been surpassed by more reliable and efficient forms of error checking, including V.42 and MNP 2-4 protocols. Either the same type of parity must be used by two communicating computers, or both may omit parity. protocol A system of rules and procedures governing communications between two or more devices.
GLOSSARY start/stop bits These signaling bits are attached to a character before and after the character is transmitted during asynchronous transmission. terminal A device whose keyboard and display are used for sending and receiving data over a communications link. This device differs from a microcomputer or a mainframe in that it has little or no internal processing capabilities. terminal mode Software mode that allows direct communication with the modem. This mode is also known as command mode.
GLOSSARY V.23 An ITU-T standard for modem communication at 1200 bps with a 75 bps back channel. This standard is used in the U.K. V.27ter An ITU-T standard for facsimile operations that specifies modulation at 4800 bps, with fallback to 2400 bps. V.29 An ITU-T standard for facsimile operations that specifies modulation at 9600 bps, with fallback to 7200 bps. V.32 An ITU-T standard for modem communications at 9600 bps and 4800 bps. V.32 modems fall back to 4800 bps when line quality is impaired. 56 V.
GLOSSARY V.42 bis An extension of ITU-T V.42 that defines a specific data compression scheme for use during V.42 connections. V.90 The ITU-T standard for 56 Kbps modem communications. Xmodem The first of a family of error control software protocols used to transfer files between modems. These protocols are in the public domain and are available from many bulletin board services. Xon/Xoff Standard ASCII control characters used to tell an intelligent device to stop/resume transmitting data.
TECHNICAL REFERENCE Modem Push Buttons Symbol Meaning Function SPKR Speakerphone 1) Answer incoming calls as a speakerphone 2) Switch between speakerphone and handset modes 3) Switch between hands-free and handset modes during playback STOP/ PLAY Stop/Play 1) Start and stop the playback of voice messages 2) Stop recording your personal message 3) Stop playback of your personal message 4) Initiates fax session DEL/<< << Delete/Repeat 1) Erase the messages 2) Repeats the current message REC/>> >> Re
T ECHNICAL R EFERENCE Telephone Handset DTMF Digits for Remote Message Retrieval Digit(s) 1 2 3 44 5 6 7 8 9 0 * # Function Starts playback of all new voice messages Starts playback of all stored voice messages (new and old) Skips to the next voice message Deletes old voice messages in memory Enables/disables fax forwarding feature Repeats the current voice message Records personal message Not used Repeats the new message count 1) Stops playback of all voice messages 2) Stops the recording of your person
T ECHNICAL R EFERENCE Front Panel Lights Symbol Meaning Status PWR/ MEM Power/ Message Memory Bicolor LED: 1) Constant red indicates that auto-answer is off and the modem will not answer any calls when the PC is off. 2) Constant green indicates that auto-answer is on and the modem is ready to receive voice and fax messages when the PC is off. 3) Flashes green or red rapidly to indicate that the message memory is full. MSG Message Bicolor LED: 1) Blinks red once for each new fax message.
T ECHNICAL R EFERENCE 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.) If a command has numeric options and you do not include a number, zero is assumed. For example, if you type ATB, the command ATB0 is assumed. Every command except A/, +++, and A> must begin with the AT prefix and be entered by pressing ENTER.
T ECHNICAL R EFERENCE Basic Data Commands Any key Aborts off-hook dial/answer operation and hangs up. S 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.
T ECHNICAL R EFERENCE Dn (Continued) , (Comma) Pause, see the definition of the S8 register to which it is linked ; (Semicolon) Return to Command mode after dialing “ (Quotation Marks) Dials the letters that follow (in an alphabetical phone number) ! (Exclamation point) Flashes the switch hook / (Back Slash) Delays for 125 ms.
T ECHNICAL R EFERENCE In Mn On 64 Displays the following information: I0 Four-digit product code I1 Results of ROM checksum I2 Results of RAM checksum I3 Product type I4 Current modem settings I5 Stored memory settings I6 Link diagnostics I7 Product configuration I9 Plug and Play information I11 Extended link diagnostics Operates speaker M0 Speaker always OFF M1 Speaker ON until CONNECT M2 Speaker always ON M3 Speaker ON after dial, until CONNECT Returns online O0 Returns online O1 Returns online and re
T ECHNICAL R EFERENCE Xn Sets result code displayed, default is X4 (Note: Result codes 0 through 155 are for 33.6 products and V.90 products. Result codes above 155 apply only to V.90 products.
T ECHNICAL R EFERENCE Xn (Continued) Result Codes 91/CONNECT 21600 99/CONNECT 24000 103/CONNECT 26400 107/CONNECT 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 66 X0 Xn Setting X1 X2 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • X3 X4 • • • • • • • • • • • • • • • • • • • • • • • • • • •
T ECHNICAL R EFERENCE Xn (Continued) Result Codes 192/CONNECT 42666 196/CONNECT 44000 200/CONNECT 45333 204/CONNECT 46666 208/CONNECT 48000 212/CONNECT 49333 216/CONNECT 50666 220/CONNECT 52000 224/CONNECT 53333 228/CONNECT 54666 232/CONNECT 56000 Adaptive Dialing Wait for 2nd Dial Tone (W) Wait for Answer (@) Fast Dial X0 Xn Setting X1 X2 • • • • • • • • • • • X3 X4 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 67
T ECHNICAL R EFERENCE Yn Z 68 Selects power-on/reset default configuration Y0 Use profile 0 setting Y1 Use profile 1 setting Y2 Use factory configuration 0 Y3 Use factory configuration 1 Y4 Use factory configuration 2 Resets modem Z0 Resets modem to profile selected by Y command or dip 7 Z1 Resets modem to profile 0 Z2 Resets modem to 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) Extended
T ECHNICAL R EFERENCE &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 Loads a read-only (nonprogrammable) factory configuration &F0 Generic template &F1 Hardware flow control template &F2 Software flow control template &Gn Sets Guard Tone &G0 No guard tone, U.S.
T ECHNICAL R EFERENCE &In Sets Receive Data (RD) software flow control, see also &Rn &I0 Software flow control disabled &I1 Xon/Xoff signals to your modem and remote system &I2 Xon/Xoff signals to your modem only &Kn Enables/disables data compression &K0 Data compression disabled &K1 Auto enable/disable &K2 Data compression enabled &K3 MNP5 compression disabled &Mn Sets Error Control (ARQ) for connections at 1200 bps and higher &M0 Normal mode, error control disabled &M1 Reserved &M2 Reserved &M3 Reser
T ECHNICAL R EFERENCE &Nn (Continued) &N13 26,400 bps &N14 28,800 bps &N15 31,200 bps &N16 33,600 bps &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 &N36 &N37 &N38 52,000 bps 53,333 bps 54,666 bps 56,000 bps &Pn Sets pulse (rotary) dial make/break ratio &P0 U.S.
T ECHNICAL R EFERENCE &Tn 72 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 Analog Loopback with self-test and error detector
T ECHNICAL R EFERENCE &Un &U=0 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. Note: &U17 through &U39 apply only to V.90 products. &N=0 &N>0 Connects at best possible speed between your modem and the remote modem. Connects at a speed at or below &Nn.
T ECHNICAL R EFERENCE &Un (Continued) &U0 No restrictions on the minimum speed for the connection &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 bps &U13 26,400 bps &U14 28,800 bps &U15 31,200 bps &U16 33,600 bps &U17 28,000 bps &U18 29,333 bps &U19 30,666 bps 74 &U20 &U21 &U22 &U23 &U24 &U25 &U26 &U27 &U28 &U29 &U30 &U31 &U32 &U33 &U34 &U35 &U36 &U37 &U38 32,000 bps 33,333 bps 34,666 bps
T ECHNICAL R EFERENCE &Wn &Yn Writes current configuration &W0 Modifies the storage 0 template (Y0) &W1 Modifies the storage 1 template (Y1) Sets break handling &Y0 Destructive, but does not send break &Y1 Destructive, expedited &Y2 Nondestructive, expedited &Y3 Nondestructive, unexpedited &Zn? Displays the phone number stored at position n (n = 0− − 3) &ZL? Displays the last executed dial string #CID=n +++ Controls Caller ID feature #CID=0 Caller ID disabled #CID=1 Caller ID enabled with formatted i
T ECHNICAL R EFERENCE 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).
T ECHNICAL R EFERENCE Register Default S7 60 S8 S9 2 6 S10 14 S11 S12 S13 70 50 0 Function 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 command Sets the required duration, in tenths of a second, of the remote modem’s carrier signal before recognition by the modem Sets the duration, in tenths of a second, that the mo
T ECHNICAL R EFERENCE Register Default S13 (Continued) S14 S15 0 0 Function Bit Value Result 5 32 Reserved 6 64 Disable quick retrains 7 128 Disconnect on escape code *The 1.
T ECHNICAL R EFERENCE Register Default S15 (Continued) S16 S17 S18 0 0 0 S19 0 S20 S21 0 10 Function Bit Value Result 3 8 Disable MNP handshake 4 16 Disable MNP level 4 5 32 Disable MNP level 3 6 64 MNP incompatibility 7 128 Disable V.42 operation To disable V.42 detect phase, select the total of the values for bits 3 and 7.
T ECHNICAL R EFERENCE Register Default 80 S22 S23 S24 S25 17 19 0 20 S26 S27 0 0 Function Stores the ASCII decimal code for the Xon character Stores the ASCII decimal code for the Xoff character Reserved 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-ma
T ECHNICAL R EFERENCE Register Default S27 (Continued) S28 S29 S30 S31 S32 0 8 255 20 0 128 2 Function Bit 6 7 Value 64 128 Result 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 Used for unusual software incompatibilities Some software may not accept 7200, 12,000, and 14,400 bps or greater result codes Eliminates the V.
T ECHNICAL R EFERENCE Register Default S32 (Continued) S33 S34 0 0 Function Bit Value Result 4 16 Disable V.34+ modulation 5 32 Disable 56K modulation 6 64 Disable V.90 modulation. 7 128 Reserved.
T ECHNICAL R EFERENCE Register Default S34 (Continued) S35-S37 S38 0 S39-S40 S41 S42 0 0 Function Bit Value Result 2 4 Disable 32S-2D trellis encoding 3 8 Disable 64S-4D trellis encoding 4 16 Disable non-linear coding 5 32 Disable TX level deviation 6 64 Disable Pre-emphasis 7 128 Disable Pre-coding Reserved Sets an optional delay, in seconds, before a forced hang-up and clearing of the Transmit buffer when DTR drops during an ARQ call.
T ECHNICAL R EFERENCE 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 Then the modem waits for a specified time before OK appears on screen. The pause is set in 10 millisecond intervals.
T ECHNICAL R EFERENCE Fax Commands (Continued) +FTM=n Transmits data using the modulation specified by n (n = 3, 24, 48, 72, 96, 97, 98, 121, 122, 145, or 146) Note: See the “Screen Messages” table at the end of this section for an explanation of messages that appear in response to this command.
T ECHNICAL R EFERENCE Screen Messages Numeric Message 86 Text Message Description 0 OK The previous command has been processed successfully. 1 CONNECT The modem has just connected to another modem. 2 RING Reports the receipt of a network altering ring. 3 4 NO CARRIER ERROR No carrier is being received from the modem. The previous command line has not been recognized or was completed abnormally. 5 NO DIAL TONE (Optional) Dial tone was not received within the time-out period.
T ECHNICAL R EFERENCE The Serial Interface The serial interface is a standard developed by the Electronic Industries Association (EIA). It defines the signals and voltages used when data is exchanged between a computer and a modem or serial printer. The entire standard covers many more functions than are used in most data communications applications.
T ECHNICAL R EFERENCE Serial Interface Pin Definitions DB-25 1 2 3 4 5 6 7 8 12 20 22 88 DB-9 — 3 2 7 8 6 5 1 — 4 9 Circuit Function Signal Source Computer/Modem AA BA BB CA CB CC AB CF SCF CD CE Chassis Ground Transmitted Data Received Data Request to Send Clear to Send Data Set Ready Signal Ground Carrier Detect Speed Indicate Data Terminal Ready Ring Indicate Both Computer Modem Computer Modem Modem Both Modem Modem Computer Modem
SPECIAL NOTES - AUSTRALIAN USERS 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. If the call sequence is unsuccessful, there shall be a delay of at least 30 minutes before attempting to call the number again.
SPECIAL NOTES - AUSTRALIAN USERS 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.
SPECIAL NOTES - AUSTRALIAN USERS S7 Command Restrictions The modem commands shown below have their default values and range limits set to meet Austel approval requirements. These settings are different from the ones listed in the “Technical Quick Reference” section of the User’s Guide & Reference found on our support Web page.
SPECIAL NOTES - AUSTRALIAN USERS Australian Safety Instructions 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 (Internal Modems Only) DTE (computer) is open • The modem card must only be used in data terminal equipment (DTE), e.g., computer, that has a screw down cover/lid.
