FCC Part 15 This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
82034908
Quick Reference Guide Models MT2834ZDX, MT2834ZDXb, MT2834ZDXI, MT2834DXK P/N 82034908 Revision I (3/5/99) Copyright ©1999 by Multi-Tech Systems, Inc. All rights reserved. This publication may not be reproduced, in whole or in part, without prior expressed written permission from Multi-Tech Systems, Inc. Multi-Tech Systems, Inc.
Quick Reference Guide Chapter 1: Introduction Congratulations .......................................................................................... 3 What Is in My Modem Package? .............................................................. 4 Chapter 2: Quick Start Introduction ................................................................................................ 7 What You’ll Need ....................................................................................... 7 We supply ..........
Contents Communications Software ................................................................. 26 Connections ............................................................................................. 27 Connecting to the Computer (“RS232”) ............................................. 27 Connecting to the Telephone Line (“LINE”) ....................................... 28 Connecting a Telephone Set (“PHONE”) ........................................... 28 Connecting to Power (“POWER”) ................
Quick Reference Guide CTR21 ...................................................................................................... 81 Australian Modem Warning Notice .......................................................... 81 Modem Commands ............................................................................ 81 Call Attempts/Retries ......................................................................... 82 Use of Supplied Power Transformer ..................................................
Contents ix
Quick Reference Guide x
1 Introduction
Quick Reference Guide 2
1 Introduction Congratulations Congratulations on your purchase of the MT2834ZDX fax modem, one of the finest fax modems available today from one of America’s oldest and most respected modem manufacturers. The MT2834ZDX complies with the international V.34 standard for a top speed of 28,800 bits per second (bps). The MT2834ZDXb complies with the enhanced V.34 standard for a top speed of 33,600 bps. Both models are downward compatible with all previous standards, including V.32terbo (19,600 bps), V.
Quick Reference Guide What Is in My Modem Package? Your MT2834ZDX package has several components. Make sure you have them all before trying to operate your modem.
2 Quick Start
Quick Reference Guide 6
2 Quick Start Introduction We know you’re eager to get your Multi-Tech MultiModemZDX fax modem up and running, so we’ll skip the features for now, and show you step-by-step how to set it up, check it out, and make your first calls.
Quick Reference Guide Safety Warnings • • • • • • • • Use this product only with UL- and CUL-listed computers. To reduce the risk of fire, use only 26 AWG or larger telephone wiring. Never install telephone wiring during a lightning storm. Never install a telephone jack in a wet location unless the jack is specifically designed for wet locations. Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the network interface.
2 Quick Start Step 2: Connect the Modem to Your System Placing the MT2834ZDX in a convenient location, connect it to your computer’s serial port, to the telephone line, to AC power, and, optionally, to your telephone. Figure 2-2. MT2834ZDX connections.
Quick Reference Guide RS232 Connection Plug one end of the serial cable into the RS232 connector on the modem, and the other end into a serial port connector on your computer, such as COM1 or COM2. LINE Connection Plug one end of the phone cable into the MT2834ZDX’s LINE jack, and the other end into a phone line wall jack. Note: The ZDX's LINE jack is not interchangeable with the PHONE jack. Do not plug the phone into the LINE jack or the line cable into the PHONE jack.
2 Quick Start POWER Connection Plug the power supply module into an AC power outlet or power strip. Plug the power supply’s cable into the POWER jack on the modem. Note: Use only the power supply supplied with the MT2834ZDX. Use of any other power supply will void the warranty and could damage the modem. Power-On Test Test the modem by turning it on (a power on/off switch is located on the right side).
Quick Reference Guide Step 3: Install the Modem in Windows If you use Windows 95, Windows 98, or Windows NT 4.0, you must install the modem in the operating system. (If you use Windows 3.1 or another operating system, skip to Step 4.) Adding the Modem to Windows 1. Make sure your modem is connected properly, then turn on your computer. Windows should detect your new modem and open the Install New Modem wizard.
2 Quick Start Removing Your Old Modem from Windows When a new modem replaces another modem, the old modem installation remains in Windows after you install the new modem, and the old modem is still selected in HyperTerminal and other Windows 95 or NT applications. Although you can change the application connection descriptions one at a time, it is easier to force Windows applications to use the new modem by removing the old modem from Windows. 1.
Quick Reference Guide Step 4: Install and Configure Your Software You must have communications software installed in your computer to use the MT2834ZDX. If you wish to use communications software that is already installed, you should reconfigure it for the MT2834ZDX; otherwise, install the data and fax communications software provided with the MT2834ZDX (see software documentation for installation instructions). 1. Install communications software, if necessary. 2.
2 Quick Start create a default configuration for a Macintosh computer that turns off autoanswer, type AT&F&D0S0=0&W. The new configuration loads automatically whenever the modem is turned on or receives the ATZ command. 6. Select the port the modem is connected to (normally COM1 or COM2). 7. Select your serial port speed. This can be labeled “maximum speed,” “DTE bps,” or “baud rate.
Quick Reference Guide 9. If the software allows you to edit the no-connect messages (NO CARRIER, BUSY, NO ANSWER, NO DIALTONE), make sure there is no space between DIAL and TONE in NO DIALTONE. 10. Refer to the software manual or online Help for other configuration choices; in most cases you can accept the default values. Step 5: Call the Multi-Tech BBS Test the modem’s data functions by calling the Multi-Tech Bulletin Board System (BBS) and downloading ZDXHELP.
2 Quick Start 8. Click OK, and then click Dial. You will know you have reached a modem by the harsh sounds of the modem handshake. 9. When the BBS welcome screen appears in the HyperTerminal window, type your first name, last name, and password following the prompts. If you are a first-time caller, the BBS asks if your name is spelled correctly. If you answer Y, a questionnaire appears. You must complete the questionnaire to use the BBS on your first call. 10. Press ENTER until the main menu appears.
Quick Reference Guide Windows Terminal 1. Open the Accessories program group and double-click on the Terminal icon. 2. Select the Settings menu and make the following changes: Phone Number: Type 1-800-392-2432 if you are in North America, or type an overseas access code and 612-785-3702 if you are outside North America. Communications: Select the COM port the modem is connected to and change the following: Baud rate to 19200; Flow control to Hardware; and Carrier Detect to checked.
2 Quick Start 10. Type X and press ENTER to select the Xmodem transfer protocol. 11. To begin the download in Terminal, click Transfers, then click Receive binary file. Next, select the destination directory, type the file name (zdxhelp.hlp), and click OK. If the download fails, your baud rate may be set too high. Log off, set the COM port baud rate lower, and call again. 12. To log off the BBS, press ENTER, type G for “good-bye,” and press ENTER twice more.
Quick Reference Guide References The World Wide Web is an excellent source of information about modems in general and modem installation, configuration, and troubleshooting in particular. The following Web sites are good places to start: • Costmo’s Other Resources Page: http://modems.rosenet.net/or/ • Curt’s High Speed Modem Page: http://elaine.teleport.com/~curt/modems.html • Data Communications FAQ: http://www.best.com/~malch/comfaq.html • Multi-Tech Systems, Inc.: http://www.multitech.
3 Features
Quick Reference Guide 22
3 Features What Can I Do with My MultiModemZDX? Your MT2834ZDX is the gateway to the exciting world of telecommunications. You can use it to access commercial online information services such as CompuServe, America Online, Genie, and Prodigy. These services provide access to databases, encyclopedias, stock reports, news, weather, and shopping. They provide electronic mail (e-mail) links to subscribers of the same and other services.
Quick Reference Guide Features The MT2834ZDX automatically adjusts to line conditions and to the capabilities of the modem it connects to, resulting in the highest transmission speed, the most accurate error correction, and the most efficient data compression possible for each connection. The MT2834ZDX follows the ITU-T V.34 specification for data rates as high as 28,800 bps over public telephone lines, while the MT2834ZDXb follows the most recent revision of the V.
3 Features Required Equipment In addition to the contents of the MT2834ZDX package, you need the following equipment. Computer The MT2834ZDX can be connected to any computer with an RS-232C/ V.24 serial port, such as the IBM PC, XT, AT, and PS/2 computers, and most PC compatibles. It can also be connected to the RS-422 serial ports on Apple Macintosh computers.
Quick Reference Guide Telephone Line You must have a telephone line with a jack (connector) that accepts the cable that comes with the MT2834ZDX. If you do not have a telephone jack near your computer, you should install one before proceeding. In North America, do-it-yourself telephone extension kits and accessories are available wherever telephones are sold. You may also hire an independent contractor or your local telephone company to do the work.
3 Features Connections All models connect to your computer (“RS232”), to a telephone line (“LINE”), to a power source (“POWER”), and, optionally, to a telephone set (“PHONE”). Figure 3-1. ZDX connectors. Connecting to the Computer (“RS232”) Using a matching serial cable, connect the RS232 connector on the modem to one of the serial port connectors on the back of your computer. On an IBM PC or compatible, there are usually two serial ports named “COM1” and “COM2.
Quick Reference Guide Connecting to the Telephone Line (“LINE”) Plug one end of the cable provided with the MT2834ZDX into the telephone jack in your home or office. Plug the other end into the LINE jack on the MT2834ZDX. Note: The ZDX's LINE jack is not interchangeable with the PHONE jack. Do not plug the telephone into the LINE jack or the line cable into the PHONE jack.
3 Features Connecting to Power (“POWER”) Low voltage DC power is supplied to the MT2834ZDX through a modular power supply included with the modem. Plug the power supply module into a convenient AC power outlet or surge protector. Plug the connector on the other end of the power cord into the POWER jack on the modem. A power on/off switch is located on the right side of the modem. Note: Use only the power supply supplied with the MT2834ZDX.
Quick Reference Guide Front Panel Figure 3-2. ZDX front panel The MT2834ZDX has ten LED indicators on the front panel that indicate status, configuration, and activity: Transmit Data. The TD LED lights when the modem is transmitting data to another modem. The state of the LED matches the TD circuit on pin 2 of the RS-232C/V.24 interface. Receive Data. The RD LED lights when the modem is receiving data from another modem. The state of the LED matches that of the RD circuit on pin 3 of the RS-232C/V.
3 Features 28 LED to indicate speeds between 16,800 and 26,400 bps (see table). It lights together with the 96 LED to indicate a speed of 12,000 bps. 9600 bps. The 96 LED lights when the modem connects at 9600 bps. If no speed LED lights, the modem is operating at less than 9600 bps. Off-Hook. The OH LED lights when the modem is off-hook, which occurs when the modem is dialing, online, or answering a call. The LED flashes when the modem pulse-dials. Terminal Ready.
Quick Reference Guide Speed Indicator Blink Rates The 28 (33), 14, and 96 speed indicators light singly or in combination to indicate data rates. Data rates for the ZDX are shown in the following table. Data rates for the ZDXb are shown on the inside back cover.
4 AT Commands, S-Registers & Result Codes
Quick Reference Guide 34
4 AT Commands, S-Registers, and Result Codes AT Commands This section summarizes your modem’s AT commands. For detailed information on the commands, download the ASCII text or Windows Help versions from the Multi-Tech BBS (see “Step 5: Call the MultiTech BBS” in Chapter 2). Command: Values: Description: AT Attention Code n/a The attention code precedes all command lines except A/, A:, and escape codes. Command: Values: Description: RETURN Key n/a Press the RETURN (ENTER) key to execute most commands.
Quick Reference Guide Command: Values: Default: Description: Command: Values: Default: Description: &An &A0 &A1 $An $A0 $A1 Command: Values: Default: Description: #An #A0 #A1 #A2 #A3 Command: Values: Default: Description: 36 Bn B1 Answerback n = 0 or 1 0 Disables answerback. Enables answerback reply to an ID request. Auto-Reliable Buffering n = 0 or 1 0 Discard data received during establishment of a reliable connection. Buffer data received during establishment of a reliable connection.
4 AT Commands, S-Registers, and Result Codes Command: Values: Default: Description: &BSn Maximum Reliable Block Size n = 0 or 1 1 &BS0 Maximum transmit block size of 64 characters. &BS1 Maximum transmit block size of 256 characters. Command: Values: Default: Description: $BAn Baud Adjust n = 0 or 1 0 $BA0 Set baud adjust off, speed conversion on. (Serial port speed is independent of modem data rate.) $BA1 Set baud adjust on, speed conversion off. (Serial port speed is same as modem data rate.
Quick Reference Guide Command: Values: Default: Description: Ds Command: Values: Ds Nd Store Telephone Number s = dial string (phone number and dial modifiers) d = 0 or 1 none To store, enter D followed by dial string s, then N followed by directory number d. Example: ATDT9,5551212N1.
4 AT Commands, S-Registers, and Result Codes Command: Values: Default: Description: %DCn AT Command Control n = 0 or 1 0 %DC0 The modem responds to AT commands. %DC1 The modem ignores AT commands. Note: The modem will respond to AT%DC for 10 seconds after power-up. Command: Values: Default: Description: %DFn Format Line Probe Data n = 0 or 1 0 %DF0 Display data in graph format. Y axis is gain shown in dBm. %DF1 Display data in table format.
Quick Reference Guide Command: Values: Default: Description: Command: Values: Default: Description: Command: Values: Defaults: Description: Command: Values: Defaults: Description: En E0 E1 &En &E0 &E1 &E2 &En &E3 &E4 &E5 &En &E6 &E7 Command: Values: Default: Description: 40 &En &E8 &E9 Echo Command Mode Characters n = 0 or 1 1 Do not echo keyboard input to the terminal. Do echo keyboard input to the terminal. V.42 Error Correction Modes n = 0, 1, or 2 1 V.42 non-error correction mode (V.
4 AT Commands, S-Registers, and Result Codes &En Command: Values: Default: Description: Non-Error Correction Mode Flow Control n = 10 or 11 10 &E10 Disable non-error correction mode flow control. &E11 Enable non-error correction mode flow control. Command: Values: Default: Description: &En Pacing (Computer-Initiated Flow Control) n = 12 or 13 13 &E12 Pacing disabled. &E13 Pacing enabled. Command: Values: Default: Description: &En Data Compression n = 14 or 15 15 &E14 Data compression disabled.
Quick Reference Guide Command: Values: Defaults: Description: %En %E0 %E1 %E2 %E3 %E4 %E5 Command: Values: Default: Description: &Fn &F0 &F8 &F9 Command: $Fn Values: Default: Description: $F0 $F1 42 Escape Sequence Options n = 0–5 1 and 4 Modem won’t escape. +++AT method. AT method. Both +++AT and AT methods. No OK response to +++AT. OK response to +++AT.
4 AT Commands, S-Registers, and Result Codes Command: %Fn Values: Default: Description: %F0 %F1 Command: Values: Default: Description: #Fn #F0 #F1 #F2 Command: Values: Default: Description: &Gn &G0 &G1 &G2 Echo Canceller Frequency Offset Compensation n = 0 or 1 0 Disable echo canceller frequency offset compensation. Enable echo canceller frequency offset compensation. Fallback Modes When On Line n = 0, 1, or 2 2 No fallback when on line.
Quick Reference Guide Command: Values: Default: Description: Command: Values: Default: Description: $Hn $H1 $H2 $H3 In I0 I1 I2 Help Screens n = 1, 2, or 3 None Display Help Screen #1. Display Help Screen #2. Display Help Screen #3. Inquire Product Codes n = 0, 1, or 2 None Display modem ID number. Display firmware version number. Display modem description.
4 AT Commands, S-Registers, and Result Codes L10 L11 List signal to noise ratio information (SNR). List noise information. Note: For L9, L10, and L11, you must first type +++AT (on-line escape command while maintaining command mode), then type the command prefixed by an AT (e.g., ATL10). Command: Values: Default: Description: Command: Values: Default: Description: #Ln #L0 #L1 #L2 #L3 Mn M0 M1 M2 M3 V.42 Mode Selection in Originate Mode n = 0, 1, 2, or 3 0 Modems negotiate V.42 mode.
Quick Reference Guide Command: Values: Default: Description: $MBn Modem Baud Rate n = speed 28800 (ZDX) or 33600 (ZDXb) $MB75 Originate call in ITU-T V.23 mode (ZDXK, ZDXI) $MB300 Originate call at 300 bps. $MB1200 Originate call at 1200 bps. $MB2400 Originate call at 2400 bps. $MB4800 Originate call at 4800 bps. $MB7200 Originate call at 7200 bps. $MB9600 Originate call at 9600 bps. $MB14400 Originate call at 14,400 bps. $MB16800 Originate call at 16, 800 bps. $MB19200 Originate call at 19,200 bps.
4 AT Commands, S-Registers, and Result Codes Command: Values: Default: Description: P Pulse Dial n/a Yes The modem pulse-dials numbers that follow P in the dialing command. Command: Values: Default: Description: &Pn Set Pulse Dial Ratios n = 0 or 1 0 60:40 break/make pulse ratio. 67:33 break/make pulse ratio. &P0 &P1 Note: The ZDXK is locked to a 67:33 pulse ratio (&P1).
Quick Reference Guide Command: Values: Default: Description: Rn Command: Values: Default: Description: &Rn R0 R1 &R0 &R1 &R2 Reverse Originate/Answer Modes n = 0 or 1 0 Modem will not reverse modes. Modem will reverse modes when R is added to the dial string. Clear to Send Control n = 0, 1, or 2 1 Let CTS state follow RTS state when on line. Force CTS high (on). Let CTS drop on disconnect for time set by S24, then go high again.
4 AT Commands, S-Registers, and Result Codes Command: Values: Description: &RN Rate Negotiation n/a Forces the modem to perform a rate renegotiation while on line. You must escape to command mode to issue this command. Command: Values: Description: &RP Immediate Line Probe n/a Initiates a retrain that makes the processor read line probe information if %DP1 is selected. Valid only when on line in V.34 mode.
Quick Reference Guide Command: Values: Default: Description: Sr ? Read Register Value r = S-register number None Read value of register Sr and display value in 3digit decimal form. Command: Values: Default: Description: &Sn Data Set Ready Control n = 0, 1, or 2 1 Force DSR high (on). Let DSR follow CD. DSR drops on disconnect, then goes high again. (Used by some CBX phone systems.
4 AT Commands, S-Registers, and Result Codes Command: Values: Default: Description: #Sy Command: Values: Default: Description: #S=y Store Setup Password y= password (6–10 characters) MODEMSETUP Stores a new remote configuration setup password. Command: Values: Default: Description: T Tone-Dial n/a P command Modem will tone-dial numbers following a T in the dialing command.
Quick Reference Guide Command: Values: Default: Description: Command: Values: Default: Description: Command: Values: Default: Description: Un U0 U1 U2 U3 Vn V0 V1 #Vn #V0 #V1 Loopback Test Modes n = 0, 1, 2, or 3 None Enable local nalog loopback originate mode. Enable local analog loopback answer mode. Enable remote digital loopback mode. Enable local digital loopback mode. Result Codes (Verbose/Terse) n = 0 or 1 1 Result codes sent as digits (terse response).
4 AT Commands, S-Registers, and Result Codes Command: Values: Default: Description: Xn X0 X1 X2 X3 X4 Command: Values: Default: Description: Command: Values: Default: Description: #Xn #X0 #X1 Yn Y0 Y1 Result Codes and Call Progress Selection n = 0–4 0 Basic result codes (CONNECT only); does not look for dial tone or busy signal. Extended result codes (CONNECT 28800, CONNECT 33600, etc.); does not look for dial tone or busy signal.
Quick Reference Guide Command: Values: Description: Z Modem Reset n/a Reset modem to default values. Defaults come from user NVRAM if &W0 is set, from factory ROM if &W1 is set. Command: Values: Description: , Dialing Pause n/a Placed in dialing command, comma causes dialing pause for time set by S8. Command: Values: Description: : Continuous Redial n/a Placed at end of dial command, a colon causes continuous redial of a number (10 in DOC modems) until answered. Not used in ZDXK or ZDXI modems.
4 AT Commands, S-Registers, and Result Codes Command: Values: Description: $ Call Card Tone Detect n/a Placed in dial command, causes modem to wait for a call card tone before processing next part of command (such as a call card number). Command: %%%AT Remote Configuration Escape Sequence Values: n/a Description: Initiates remote configuration mode while online with remote modem. The remote configuration escape character (%) is defined in register S13.
Quick Reference Guide S-Registers Certain modem values, or parameters, are stored in memory locations called S-registers. Use the S command to read or to alter the contents of S-registers (see previous section). Register Unit Range Default Description S0 1 ring 0, 1–255 1 Sets the number of rings until the modem answers. ATS0=0 disables autoanswer completely. S1 1 ring 0–255 0 Counts the rings that have occurred. S2 decimal 0–127 43 (+) Sets ASCII code for the escape code character.
4 AT Commands, S-Registers, and Result Codes Register Unit Range Default Description S8 1 sec. 0–255 4–255† 4–7‡ 2 4† 4‡ Sets the length of a pause caused by a comma character in a dialing command. S9 100 ms 1–255 6 Sets delay between when the modem detects a valid carrier signal and when it turns on its CD circuit. S10 100 ms 1–254, 255 7 Sets how long a carrier signal must be lost before the modem disconnects. S10= 255 causes the modem to not disconnect with loss of carrier.
Quick Reference Guide Register Unit Range Default Description disconnects. The 0 default equals 50 ms. S30 1 min. 0, 1–255 0 Sets how long the modem waits after the last character is received or transmitted before it disconnects. The 0 default disables the timer. S32 100 ms 0–255 20 Sets the time the modem will wait for a RETURN to be entered during escape sequence execution. S34 1 character 0–60 10 Sets the number of command characters allowed after +++AT. S36 1 sec.
4 AT Commands, S-Registers, and Result Codes Result Codes In command mode the MT2834ZDX can send responses, or result codes, to your computer. Result codes are used by communications programs and can also appear on your monitor. AT&Q0 selects Multi-Tech result codes with RELIABLE, LAPM, and COMPRESSED modifiers (default). AT&Q1 selects standard AT result codes without modifiers.
Quick Reference Guide 60
5 Solving Problems
Quick Reference Guide 62
5 Solving Problems Introduction Your MultiModemZDX modem was thoroughly tested at the factory before it was shipped. If you are unable to make a successful connection, or if you experience data loss or garbled characters during your connection, it is possible that the modem is defective. However, it is more likely that the source of your problem lies elsewhere. The following symptoms are typical of problems you may encounter: • None of the LEDs light when the modem is on.
Quick Reference Guide 4 4 4 4 Make sure the power supply module is firmly connected to the modem and to the wall outlet or power strip. If the power strip is on and the modem switch is on, try moving the modem power supply to another outlet on the power strip. Test that the outlet is live by plugging a lamp into it. The modem or power supply may be defective. If you have another Multi-Tech modem, try swapping modems. If the problem goes away, the first modem or power supply may be defective.
5 Solving Problems 4 4 4 4 4 tialization string includes &F as the first command, to cancel any “leftover’ command that could affect the modem’s operation. If you don’t get an OK, the problem may still be in the communication program. Make sure you have done whatever is necessary in your software to make a port connection. Not all communication programs connect to the COM port automatically. Some connect when the software loads and remain connected until the program terminates.
Quick Reference Guide Then select Mouse, COM Ports, and IRQ Status and note the addresses and IRQs that are in use. If you find an IRQ conflict, note which IRQs are not being used, then change one of the conflicting devices to use one of the unused IRQs. If you find an address conflict, change the address of one of the conflicting devices. To change a port address or IRQ in Windows 3.1x, double-click the Control Panel icon, then the Ports icon.
5 Solving Problems 4 The modem might be defective. If you have another Multi-Tech modem, try swapping modems. If the problem goes away, the first modem is possibly defective. Call Technical Support for assistance (see Appendix C). The Modem Dials But Cannot Connect There can be several reasons the ZDX fails to make a connection. Possibilities include: • lack of a physical connection to the telephone line. • • • • • • a wrong dial tone. a busy signal. a wrong number. no modem at the other end.
Quick Reference Guide 4 as an error. Make sure your modem’s square wave ring detection is turned on (&RD1). Check the PBX manual to see if you can change the internal dial tone; if you can’t, change your modem’s initialization string to replace X4 with X3, which will cause the modem to ignore dial tones. (Note, however, that X3 is not allowed in some countries, such as France and Spain.
5 Solving Problems The Modem Disconnects While Online 4 4 4 4 4 If you have Call Waiting on the same line as your modem, it can interrupt your connection each time someone tries to call you. If you have Call Waiting, disable it before each call. In most telephone areas in North America, you can disable Call Waiting by preceding the telephone number with *70 (check with your local telephone company).
Quick Reference Guide The Modem Cannot Connect When Answering 4 Autoanswer might be disabled. Turn on autoanswer in your datacomm program or send the command ATS0=1 to your modem in terminal mode. File Transfer Is Slower Than It Should Be 4 4 4 4 4 4 70 You might have an older UART. For best throughput, install a 16550AFN UART or a Multi-Tech ISI serial port card. See the “Quick Start” chapter for information on how to identify your UART. If you are running under Windows 3.
5 Solving Problems Data Is Being Lost 4 4 4 4 4 If you are using data compression and a high speed serial port, set the serial port baud rate to four times the data rate. Your UART might not be reliable at serial port speeds over 9600 bps or 19,200 bps. Turn off data compression, reset your serial port speed to a lower rate, or replace your serial port with a faster one. Make sure the flow control method you selected in software matches the method selected in the modem.
Quick Reference Guide 4 4 At speeds above 2400 bps, the remote modem might not use the same transmission or error correction standards as your modem. Try connecting at a slower speed or disabling error correction. (With no error correction, however, line noise can cause garbage characters.) Try entering the L8 (List Online Diagnostics) command in online mode, making a screen print of the diagnostics listing, and checking for parameters that may be unacceptable (number of retrains, round trip delay, etc.
Appendixes
Quick Reference Guide 74
A Regulatory Compliance Appendix A: Regulatory Compliance FCC Part 68 Telecom 1. This equipment complies with part 68 of the Federal Communications Commission Rules. On the outside surface of this equipment is a label that contains, among other information, the FCC registration number. This information must be provided to the telephone company. 2. The suitable USOC jack (Universal Service Order Code connecting arrangement) for this equipment is shown below.
Quick Reference Guide tice in order for you to make necessary modifications in order to maintain uninterrupted service. 7. If trouble is experienced with this equipment (the model of which is indicated below) please contact Multi-Tech Systems, Inc. at the address shown below for details of how to have repairs made. If the equipment is causing harm to the network, the telephone company may request you remove the equipment from the network until the problem is resolved. 8. No repairs are to be made by you.
A Regulatory Compliance Fax Branding Statement The Telephone Consumer Protection Act of 1991 makes it unlawful for any person to use a computer or other electronic device, including fax machines, to send any message unless such message clearly contains the following information: • Date and time the message is sent • Identification of the business or other entity, or other individual sending the message • Telephone number of the sending machine or such business, other entity, or individual This information
Quick Reference Guide Canadian Limitations Notice Notice: The ringer equivalence number (REN) assigned to each terminal device provides an indication of the maximum number of terminals allowed to be connected to a telephone interface. The termination on an interface may consist of any combination of devices subject only to the requirement that the sum of the ringer equivalence numbers of all the devices does not exceed 5. Notice: The Industry Canada label identifies certified equipment.
A Regulatory Compliance Compliance with BABT Requirements Approved for connection to telecommunications system specified in the instructions for use subject to the conditions set out in them. Warning: Interconnection directly, or by way of other apparatus, of ports marked “SAFETY WARNING see instructions for use” with ports marked or not so marked may produce hazardous conditions on the network. Advice should be obtained from a competent engineer before such a connection is made.
Quick Reference Guide European Low Voltage Directive When correctly installed, the modem will present no hazard to the user. When correctly installed, the modem will be connected to the PSTN or a PW and to a Data Terminal Equipment (DTE), whose modem connections comply with ITU-T recommendation V.28. The DTE connections are therefore taken to be safe voltages (less than ±30 volts). Ports that are capable of connecting to other apparatus are defined as SELV.
A Regulatory Compliance CTR21* This equipment has been approved by Commission Decision CTR21 for pan-European single terminal connection to the public switched telephone network (PSTN). However, due to differences between the individual PSTNs provided in different countries, the approval does not, of itself, give an unconditional assurance of successful operation on every PSTN network termination point. In the event of problems, you should contact your equipment supplier first.
Quick Reference Guide Call Attempts/Retries 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 10 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.
A Regulatory Compliance New Zealand Telecom Warning Notice Use of pulse dialing, when this equipment is connected to the same line as other equipment, may give rise to ‘bell tinkle’ or noise and may also cause a false answer condition. Should such problems occur, the user should NOT contact the Telecom Faults Service. The preferred method of dialing is to use DTMF tones, as this is faster than pulse (decadic) dialing and is readily available on almost all New Zealand telephone exchanges.
Quick Reference Guide 84
B Technical Specifications Appendix B: Technical Specifications Your MT2834ZDX fax modem meets the following specifications: Model Numbers MT2834ZDX, MT2834ZDXb, MT2834ZDXI, MT2834ZDXK Data Rates (Modem) 33.6K and 31.2K (ZDXb only), 28.8, 26.4K, 24K, 19.2K, 16.8K, 14.4K, 12K, 9600, 7200, 4800, 2400, 1200 and 0-300 bps Data Rates (Fax) 14,400, 9600, 4800 and 2400 bps Data Format (Modem) Serial, Binary, Asynchronous Compatibility (Modem) ITU-T V.34, AT&T V.32terbo, ITU-T V.32bis, V.
Quick Reference Guide Flow Control XON/XOFF, hardware (RTS/CTS), HP (ENQ/ACK) Intelligent Features Fully AT command compatible, autodial, redial, repeat dial, pulse or tone dial, dial pauses, call status display, auto parity and data rate selections, keyboard-controlled modem options, on-screen displays for modem option parameters, command lines of up to 60 digits each, and help menus Command Buffer 60 characters Modem Modulations FSK at 300 bps, PSK at 1200 bps, QAM at 2400, 4800, and 9600 bps (non-
B Technical Specifications Carrier Frequencies V.22bis/V.22 or Bell 212A Standard (2400 & 1200 bps) Transmit originate: Transmit answer: Receive originate: Receive answer: 1200 2400 2400 1200 Carrier Frequencies Bell 103/113 (300 bps) Transmit originate: 1270 Hz mark 1070 Hz space 2225 Hz mark 2025 Hz space 2225 Hz mark 2025 Hz space 1270 Hz mark 1070 Hz space Receive originate: Transmit answer: Receive answer: Hz Hz Hz Hz Fax Carrier Frequencies V.
Quick Reference Guide Cables One 14-foot RJ-11 phone cable (USA); country-specific cord for UK and International models; external power transformer and cord Note: Any cables connected to the computer should be shielded to reduce interference. Diagnostics Power-on self test, local analog loop, local digital loop, remote digital loop Indicators LEDs for Transmit Data, Receive Data, Carrier Detect, 28.8K bps, 14.
C Warranty, Service, and Technical Support Appendix C: Warranty, Service, and Technical Support Limited Warranty Multi-Tech Systems, Inc. (MTS) warrants that this product will be free from defects in material or workmanship for a period of ten years from the date of purchase or, if date of purchase is not provided, ten years from the date of shipment (limited to customers in the U.S., Canada, Mexico, and United Kingdom).
Quick Reference Guide Service If you are outside the USA, your local distributor of Multi-Tech products normally offers the quickest and most economical repair option. If necessary, you may send your modem to our Mounds View factory in the USA. A modem that is shipped to us from outside the USA must have a Returned Materials Authorization (RMA) and shipping instructions. To return a modem for repair from inside the USA, no RMA is required; simply send it to us freight prepaid.
C Warranty, Service, and Technical Support Online Warranty Registration If you have access to the World Wide Web, you can register your MultiTech product online at the following URL: http://www.multitech.com/register/ The Multi-Tech BBS For customers who do not have Internet access, Multi-Tech maintains a bulletin board system (BBS) that mirrors its FTP site. Information available from the BBS includes new product information, product upgrade files, and problem-solving tips.
Quick Reference Guide To Download a File If you know the file name 1. From the Main Menu, type F to access the File Menu, then type D. 2. Enter the name of the file you wish to download from the BBS. 3. If a password is required, enter the password. 4. Select a file transfer protocol by typing the indicated letter, such as Z for Zmodem (the recommended protocol). 5. If you select Zmodem, the transfer will begin automatically. If you select another protocol, you may have to initiate the transfer yourself.
C Warranty, Service, and Technical Support 5. Type D and press ENTER. You will see a list of the files you have marked. Type E if you would like to edit the list; otherwise type D again to start the download process. 6. Select a file transfer protocol by typing the indicated letter, such as Z for Zmodem (the recommended protocol). 7. If you select Zmodem, the file will transfer automatically. If you select another protocol, you may have to initiate the transfer yourself.
Quick Reference Guide About the Multi-Tech Fax-Back Service Multi-Tech's fax-back system provides 24-hour access to sales, marketing, and technical literature for customers in the U.S.A. Dial (612) 7175888, follow the voice prompts, and enter the document number for either the Sales and Marketing catalog or the Technical Support catalog of documents. For convenience, write your fax number in the following space: __________________________________________.
MT2834ZDXb Data Rates
