Model Number MT2834ZPX Owner's Manual
Owner’s Manual 82041404 Revision E — 11/25/96 #MT2834ZPX This publication may not be reproduced, in whole or in part, without prior expressed written permission from Multi-Tech Systems, Inc. All rights reserved. Copyright © 1996, by Multi-Tech Systems, Inc. Multi-Tech Systems, Inc. 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. Furthermore, Multi-Tech Systems, Inc.
Contents Chapter 1 - Introduction and Description Introduction ................................................................................................................ 5 Modem Features ....................................................................................................... 5 Fax Features ............................................................................................................. 6 Product Description ....................................................................
Chapter 5 - Troubleshooting Troubleshooting ....................................................................................................... 49 The Modem Does Not Respond to Commands ............................................ 49 The Modem Dials But Cannot Make a Connection ....................................... 51 The Modem Disconnects While Online .......................................................... 53 The Modem Cannot Connect When Answering ............................................
Chapter 1 - Introduction and Description Chapter 1 - Introduction and Description Introduction Welcome to the world of data communications. You have acquired one of the finest intelligent data and fax modems available today, model MT2834ZPX, from Multi-Tech Systems. This Owner’s Manual will help you install, configure, test and use your MT2834ZPX data/fax modem. Modem Features Your MT2834ZPX modem meets the proposed Enhanced V.34 ITU standard for data signalling rates as high as 33.6/31.
MT2834ZPX Owner's Manual Fax Features Your MT2834ZPX meets the CCITT V.17 standard for sending and receiving faxes. When linked to a compatible fax machine or modem, it can transmit faxes at 14.4 K bps. It also meets the CCITT’s Group 3 Designation for sending and receiving faxes at 9600 bps; and Group 2 Designation for sending and receiving faxes at 4800 bps.
Chapter 1 - Introduction and Description How to Use This Manual This manual is divided into seven chapters and two appendices. The information contained in each chapter and appendix is as follows: Chapter 1 - Introduction and Description Chapter 1 begins with a short product introduction and description; followed by a guide (which you are now reading) to the use of this manual.
MT2834ZPX Owner's Manual Chapter 6 - Testing Your Modem Chapter 6 covers the modem's built-in test features. These are: Power-on Self Test, Local Analog Loopback, Digital Loopback and Remote Digital Loopback Tests. We have included a description of each test and how to use each test procedure.
Chapter 2 - Installation and Configuration Chapter 2 - Installation and Configuration Installation This chapter provides you with the procedures to install the Multi-Tech MT2834ZPX card in your ISA or EISA bus personal computer. Hardware installation involves: 1) Opening your PC. 2) Setting card configuration (determining COM port setting and IRQ level). 3) Installing the card into the PC. Safety Warnings 1. Never install telephone wiring during a lightning storm. 2.
MT2834ZPX Owner's Manual Configuration/Installation Procedure Perform the procedures in Table 2-1 to configure and install the MT2834ZPX card into your ISA or EISA bus host computer. Table 2-1. Configuration and Installation Procedure Step 10 Procedure 1 Make sure your computer and any peripheral equipment connected to it, are turned off. Failure to do so may damage both your modem and your PC.
Chapter 2 - Installation and Configuration Figure 2-1.
MT2834ZPX Owner's Manual Table 2-1 (Cont'd). Configuration and Installation Procedure Step Procedure 5 Install the MT2834ZPX card into the selected expansion slot(s) in the same manner as any other add-on card, as instructed in your computer’s documentation. 6 Fasten the retaining bracket to the computer chassis and replace the cover. 7 Your MT2834ZPX requires a modular LINE JACK. This is typically an RJ11C or RJ11W jack, but could also be an RJ12 or RJ13 jack.
Chapter 2 - Installation and Configuration Operating Your MT2834ZPX You control your MT2834ZPX by issuing AT commands and setting SRegisters. Right now your MT2834ZPX is set up for the most typical user application, that is, as a traditional modem set to make a dial-up call to a remote installation where the call is answered automatically; therefore, you shouldn’t need to change the current default configuration.
MT2834ZPX Owner's Manual Simple Operations You can dial a number by using the ATD command and the phone number of the modem with which you wish to connect, e.g., ATD6127853500. Your modem will dial the number; a “scrambling” noise is heard as the modem negotiates the kind of connection it can make, and once the modems have settled on a common connection, a connect message on your computer’s video is displayed. To hang up a call, enter +++ATH.
Chapter 3 - Software Configuration Chapter 3 - Software Configuration Introduction Communications software must be configured to work with your modem, your computer, and the remote system it is calling. Fortunately, most communications programs make the process easy by providing a default initialization string for your modem as well as defaults for most of the other required parameters.
MT2834ZPX Owner's Manual PC Initialization Strings We recommend the following initialization string for a MT2834ZPX connected to a PC-compatible computer: AT &F X4 S0= 2 ^M This string resets the MT2834ZPX to the factory default settings, selects extended result codes with NO DIAL TONE and BUSY, and turns on auto-answer to answer on the second ring. ^M must end every string sent to the modem from software.
Chapter 3 - Software Configuration Changing Default Parameters The default values for the other parameters in modem configuration menus rarely need changing. They typically include the dialing prefix (ATDT for touch-tone service and ATDP for rotary service), the dialing suffix (^M), the hang-up string (+++ATH0^M), and response messages (RING, NO CARRIER, BUSY, etc.). Communications software with a host mode might also include an auto-answer string (AT S0=1^M).
MT2834ZPX Owner's Manual Configuring Software for the Remote System You must meet the requirements of the remote system for successful communications. Though the MT2834ZPX can automatically match the speed of the other modem, you must specify parameters such as type of flow control, break length, number of data bits, number of stop bits, and parity. If you set these parameters incorrectly with the remote system, gibberish will appear on your screen (See Figure 3-2).
Chapter 3 - Software Configuration File Transfer Protocols When you upload or download files with your modem, the host computer will ask which file transfer protocol you want to use. Most communications programs allow you to choose a default protocol. Your software’s documentation should list the ones it can use (not all communications programs support all protocols). Zmodem is the default protocol in MultiExpress for Windows, and we recommend it for most transfers.
MT2834ZPX Owner's Manual As a general rule, you should try to transmit files in alreadycompressed form rather than relying on V.42bis hardware compression. Because software compression is more efficient than hardware compression, you will have a higher throughput with the former. Of course, this efficiency does not include the time spent compressing and decompressing .ZIP or .SIT files, but it will save on phone bills.
Chapter 3 - Software Configuration To enable the buffer, use Notepad to open the SYSTEM.INI file in your Windows directory, and add the following line to the [386Enh] section: COMnFIFO=1 where n is the number of the COM port the 16550 is installed on. For example, if the 16550 is installed on COM2, the line should be: COM2FIFO=1 After you save SYSTEM.INI you must restart Windows for the change to take effect.
MT2834ZPX Owner's Manual Chapter 4 - AT Commands, S-Registers and Result Codes Dialing/On-Line/Answering There are several basic steps for “originating” and “answering” in data communication mode: 1. Load communication software 2. Dial 3. Establish On-Line connection 4. Terminate Call A simple way to dial is from the keyboard of your computer or terminal. You enter a command on the keyboard to tell the MT2834ZPX to dial. If you use a sophisticated communications software package (e.g.
Chapter 4 - AT Commands, S-Registers and Result Codes The MT2834ZPX responds with “CONNECT” on your video display after the number is dialed and a connection signal is detected (since the MT2834ZPX defaults to Enhanced V.34/V.42/V.42bis, the actual response is "CONNECT LAPM COMPRESSED”). The modem is now in “On-Line” mode, and is ready to communicate with a host site.
MT2834ZPX Owner's Manual COMMAND: VALUES: DEFAULT: DESCRIPTION: A n/a n/a Answer call, even if no ring present. COMMAND: VALUES: DEFAULT: DESCRIPTION: A/ n/a n/a Repeat last command. (Do not precede this command with AT. Do not hit RETURN to execute.) COMMAND: VALUES: DEFAULT: DESCRIPTION: A: n/a n/a Continuous redial (10 redials in DOC units) of last number until answered. (Not used in International Models.
Chapter 4 - AT Commands, S-Registers and Result Codes COMMAND: #An VALUES: n = 0 thru 3 DEFAULT: #A0 DESCRIPTION: #A0 selects initial handshake at 33,600 to 31,200 to 28,800 to 24000 to 21,600 to 19,200 to 16,800 to 14,400 to12,000 to9600 to 4800 to 2400 to 1200 to 300 bps. #A1 selects initial handshake at 33,600 bps only. #A2 selects initial handshake at 33,600 to 31,200 to 28,800 to 24000 to 21600 to 19,200 to 16,800 19,200 to 14,400 to 9600 to 4800 bps.
MT2834ZPX Owner's Manual COMMAND: &Cn VALUES: n = 0, 1, 2 or 4 DEFAULT: &C1 DESCRIPTION: &C0 forces Carrier Detect on. &C1 lets Carrier Detect act normally. &C2 lets Carrier Detect drop S24 time on disconnect. &C4 resets modem when Carrier Detect drops. COMMAND: &CDn VALUES: n = 0 or 1 DEFAULT: &CD0 DESCRIPTION: &CD0 execute cleardown on disconnect. &CD1 do not execute cleardown on disconnect.
Chapter 4 - AT Commands, S-Registers and Result Codes COMMAND: %DFn VALUES: n = 0 or 1 DEFAULT: %DF0 DESCRIPTION: %DF0 selects V.34 Line Probe Data in Graph Format. %DF1 selects V.34 Line Probe Data in Table Format. COMMAND: %DPn VALUES: n = 0 or 1 DEFAULT: %DP0 DESCRIPTION: %DP0 selects not to read Line Probe Information from DSP during handshaking. %DP1 selects read Line Probe Information from DSP during handshaking.
MT2834ZPX Owner's Manual COMMAND: &En (Cont'd) &E3 selects no modem-initiated flow control. &E4 selects CTS modem-initiated flow control. &E5 selects Xon/Xoff modem-initiated flow control. &E6 selects Xon/Xoff not passed through. &E7 selects Xon/Xoff passed through. &E8 selects Enq/Ack pacing off. &E9 selects Enq/Ack pacing on. &E10 selects Normal Mode flow control off. &E11 selects Normal Mode flow control on. &E12 selects Pacing off. &E13 means Pacing on. &E14 means data compression disabled.
Chapter 4 - AT Commands, S-Registers and Result Codes COMMAND: $Fn VALUES: n = 0 or 1 DEFAULT: $F1 DESCRIPTION: $F0 selects do not fall back to normal connect if CR received. $F1 selects fall back to normal connect if CR received. COMMAND: &Gn VALUES: n = 0, 1 or 2 DEFAULT: &G0 DESCRIPTION: &G0 turns off CCITT guard tones. &G1 turns on CCITT 550 Hz guard tone. &G2 turns on CCITT 1800 Hz guard tone. (Not used in International models.
MT2834ZPX Owner's Manual COMMAND: I9 VALUES: N/A DEFAULT: Read Only Command DESCRIPTION: The I9 command is a query to display this modem's characteristics when operating within Windows 95. Entering ATI9 invokes ZPX 28800 FAX CT on your video monitor. (The response to the query reveals that this modem is a ZPX, 28.8K, FAX and Class Two capable device.) COMMAND: L VALUES: 5, 6, 7, 8, 9, 10 and 11 DEFAULT: Read Only Command DESCRIPTION: L5 lists all current operating parameters.
Chapter 4 - AT Commands, S-Registers and Result Codes COMMAND: $MBn VALUES: n = speed DEFAULT: $MB33600 bps DESCRIPTION: $MB75 selects CCITT V.23 mode. $MB300 selects 300 bps on-line. $MB1200 selects 1200 bps on-line. $MB2400 selects 2400 bps on-line. $MB4800 selects 4800 bps on-line. $MB9600 selects 9600 bps on-line. $MB14400 selects 14400 bps on-line. $MB19200 selects 19200 bps on-line. $MB28800 selects 28800 bps on-line. $MB33600 selects 33600 bps on-line.
MT2834ZPX Owner's Manual COMMAND: &Pn VALUES: n = 0 or 1 DEFAULT: &P1 DESCRIPTION: &P0 selects 60-40 pulse ratio. &P1 selects 67-33 pulse ratio. COMMAND: Qn VALUES: n = 0, 1 or 2 DEFAULT: Q0 DESCRIPTION: Q0 means Result Codes sent. Q1 means Result Codes will be suppressed (quiet). Q2 means Dumb Answer Mode. COMMAND: &Qn VALUES: n = 0 or 1 DEFAULT: &Q0 DESCRIPTION: &Q0 selects Multi-Tech command set. &Q1 selects AT command set.
Chapter 4 - AT Commands, S-Registers and Result Codes COMMAND: &RFn VALUES: n = 0 or 1 DEFAULT: &RF1 DESCRIPTION: &RF0 selects CTS follows RTS. &RF1 selects CTS to act independently COMMAND: Sr=n VALUES: r = 0-11, 13, 15-17, 24-26, 29, 30, 32, 34, 36, 37, 48 DEFAULT: n/a DESCRIPTION: Sets value of S-Register “r” to value of “n”, where “n” is entered in decimal format.
MT2834ZPX Owner's Manual COMMAND: &Sn VALUES: n = 0, 1 or 2 DEFAULT: &S1 DESCRIPTION: &S0 forces Data Set Ready On. &S1 lets Data Set Ready act normally. &S2 Data Set Ready drop is regulated by S24 on disconnect. COMMAND: T VALUES: n/a DEFAULT: Tone Dial DESCRIPTION: Modem will tone-dial numbers following the T. COMMAND: &Tn VALUES: n = 4 or 5 DEFAULT: &T5 DESCRIPTION: &T4 selects Enable Response to Request for Remote Digital Loopback. &T5 selects Disable Response to Request for Remote Digital Loopback.
Chapter 4 - AT Commands, S-Registers and Result Codes COMMAND: Un VALUES: n = 0, 1, 2, or 3 DEFAULT: n/a DESCRIPTION: U0 places modem in Analog Loop Originate Mode. U1 places modem in Analog Loop Answer Mode. U2 places modem in Remote Digital Loopback test mode. U3 places modem in Local Digital Loopback Test Mode. COMMAND: Vn VALUES: n = 0 or 1 DEFAULT: V1 DESCRIPTION: V0 selects Result Codes sent as digits(terse response). V1 selects Result Codes sent as words (verbose response).
MT2834ZPX Owner's Manual COMMAND: Xn VALUES: n = 0, 1, 2, 3 or 4 DEFAULT: X0 DESCRIPTION: X0 selects Basic Result Codes (w/o CONNECT 1200, CONNECT 2400). X1 selects Extended Result Codes (w/CONNECT 1200, CONNECT 2400). X2 selects Standard AT Command set with NO DIAL TONE. X3 selects Standard AT Command set with BUSY. X4 selects Standard AT Command set with NO DIAL TONE and BUSY. COMMAND: #Xn VALUES: n = 0 or 1 DEFAULT: #X0 DESCRIPTION: #X0 selects single XOFF character sent until XON level returns.
Chapter 4 - AT Commands, S-Registers and Result Codes COMMAND: ;(Semi-Colon) VALUES: n/a DEFAULT: n/a DESCRIPTION: Causes return to Command Mode after dialing. COMMAND: ! (Exclamation) VALUES: n/a DEFAULT: n/a DESCRIPTION: Causes modem to flash On-Hook. COMMAND: @ VALUES: n/a DEFAULT: n/a DESCRIPTION: Causes modem to wait for ringback, then 5 seconds of silence before processing next part of command. COMMAND: +++AT VALUES: n/a DEFAULT: n/a DESCRIPTION: In-band Escape Sequence.
MT2834ZPX Owner's Manual Remote Configuration The Remote Configuration feature is a network management tool that allows you to configure modems remotely. This means you could configure modems anywhere in your network from one location without having to visit the sites or rely on remote users to follow your instructions. With Remote Configuration, which is protected by two level security, you can downline load new parameters, program new V.42 capabilities and implement new features.
Chapter 4 - AT Commands, S-Registers and Result Codes TABLE 4-1 (Cont'd). Remote Configuration Operation Procedures You can now use any AT commands of the modem being remotely configured as if they were being entered locally. You cannot change the Set-up of the LOGIN Password until you enter the proper LOGIN Password. Step 4. Procedure When you are done entering AT commands and you want to exit, type AT0 and hit RETURN. The modem responds with: 1. DATA Mode 2. COMMAND Mode 5.
MT2834ZPX Owner's Manual S-Registers Certain Command Mode configurations are stored in memory registers called, S-Registers. The S command is used to assign a value to, and to read the current value of an S-Register. To assign a value to an SRegister, enter the letter S, followed by the S-Register number and an equals sign (=). To read an S-Register value, enter the letter S followed by the S-Register number and a question mark (?), then hit RETURN.
Chapter 4 - AT Commands, S-Registers and Result Codes S3 Return Character Unit: Range: Default: Description: ASCII Character 0-127 13 Defines the character recognized as Carriage Return (RETURN) or “Enter”. S4 Line Feed Character Unit: Range: Default: Description: ASCII Character 0-127 10 Defines the character recognized as LINE FEED. S5 Backspace Character Unit: Range: Default: Description: ASCII Character 0-127 8 Defines the character recognized as BACKSPACE.
MT2834ZPX Owner's Manual S8 Pause Time for Comma Unit: Range: Default: Description: 1 second 0-255, 4-255** 2, 4** Sets the length of the pause caused by a comma inserted in a dialing command. S9 Carrier Detect Response Time Unit: Range: Default: Description: 100 mSec. 1-255 6 Sets the time delay for when the modem first detects a valid incoming carrier signal and when the modem turns on its Carrier Detect circuit. S10 Carrier Loss Disconnect Delay Time Unit: Range: Default: Description: 100 mSec.
Chapter 4 - AT Commands, S-Registers and Result Codes S13 Remote Configuration Escape Character Unit: Range: Default: Description: ASCII Character 0-127 37 (% sign) Defines the remote configuration escape character. S17 Changing Break Time Unit: Range: Default: Description: 10 mSec. 0-2.5 sec 250 S17 defines the break time (space) to local PC. S24 PBX/CBX Disconnect Drop Time for DSR/CTS/CD Unit: Range: Default: Description: 50 mSec. 0-255 20 Defines DSR/CTS/CD dropout time.
MT2834ZPX Owner's Manual S29 Local Inactivity Timer Unit: Range: Default: Description: minutes 1-255 20 Defines the amount of idle time that can elapse between AT commands after the SETUP password has been entered. S30 Inactivity Timer Unit: Range: Default: Description: 1 minute 0-255 0 Inactivity timer used to disconnect the modem.
Chapter 4 - AT Commands, S-Registers and Result Codes S36 Time Between DTR Inactive and Modem Off-Hook Unit: Range: Default: Description: 1 Second 0-255 seconds 0 Sets the time between DTR inactive (low) and the modem going off-hook. The DTR Busy-out feature is disabled with S36=0. S37 Time Between DTR Active and Modem On-Hook Unit: Range: Default: Description: 1 Second 0-255 seconds 5 Sets the time between DTR being active and the modem going on-hook (not busy). S48 Program V.
MT2834ZPX Owner's Manual Result Codes The MT2834ZPX Command mode provides you with several responses, or “Result Codes”, that can aid you in Command mode operation. These Result Codes are displayed on your video monitor. AT&Q0 selects Multi-Tech responses with Reliable/LAP-M/ Compressed modifiers. The terse result code for CONNECT 2400 is 9. AT&Q1 selects Standard AT command set responses. The terse result code for CONNECT 2400 is 10. The following tables list result codes generated by the &Q command.
Chapter 4 - AT Commands, S-Registers and Result Codes Table 4-3 &Q1 "Standard AT" Result Codes TERSE 0 1 2 3 4 5 6 7 8 10 11 12 13 19 21 24 26 28 31 33 VERBOSE OK CONNECT RING NO CARRIER ERROR CONNECT 1200 NO DIAL TONE BUSY NO ANSWER CONNECT 2400 CONNECT 4800 CONNECT 9600 CONNECT 14400 CONNECT 19200 CONNECT 21600 CONNECT 24000 CONNECT 26400 CONNECT 28800 CONNECT 31200 CONNECT 33600 *Error Correction/Data Compressed modifiers are not displayed with Standard AT Result Codes.
MT2834ZPX Owner's Manual AT Commands and S-Register Summary The vast majority of installations are similar, with the MT2834ZPX being used to dial up a remote installation where the call is automatically answered. Your MT2834ZPX has a default configuration to dial another 33,600 bps modem that support error correction, data compression and flow control. If the answering modem is not compatible, the MT2834ZPX can match protocols, provided the protocols are industry standard (i.e.
Chapter 5 - Troubleshooting Chapter 5 - Troubleshooting Troubleshooting Your MT2834ZPX 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. Problems you may encounter include the following: • The modem does not respond to commands.
MT2834ZPX Owner's Manual Some connect when the software loads and remain connected until the program terminates. Others, like MultiExpress Terminal, can disconnect without exiting the program (make sure the Connect icon looks plugged in). MultiExpress Terminal also allows multiple terminals to be open, but only one can access the modem at a time. If MultiExpress Terminal reports that it cannot make a connection, click on the Window menu to see if more than one terminal is open.
Chapter 5 - Troubleshooting Uncheck Use Automatic Settings to change the port’s settings so they do not conflict with the other device, or select the port the conflicting device is on and change it instead. If you need to open your computer to change switches or jumpers on the conflicting device; refer to the device’s documentation. • The modem may be defective. If you have another Multi-Tech modem, try swapping modems. If the problem goes away, the first modem is possibly defective.
MT2834ZPX Owner's Manual • If the modem reports BUSY, the other number may be busy, in which case you should try again later, or it may indicate that you have failed to add a 9, prefix to the phone number if you must dial 9 for an outside line. If you must dial 9 to get an outside line, the easiest way to dial it automatically is to include it in the modem’s dial prefix, e.g., ATDT9,. Note the comma, which inserts a pause before the number is dialed.
Chapter 5 - Troubleshooting The Modem Disconnects While Online • If you have call waiting on the same phone line as your modem, it may interrupt your connection when someone tries to call you. If you have call waiting, disable it before each call. In most telephone areas, you can disable call waiting by preceding the telephone number with *70 (check with your local telephone company). You can automatically disable call waiting by including the disabling code in the modem’s dial prefix (e.g.
MT2834ZPX Owner's Manual The Modem Cannot Connect When Answering • Auto-answer may be disabled. Turn on auto-answer in your datacomm program or send the command ATS0=1 to your modem in terminal mode. File Transfer Is Slower Than It Should Be • If you are using a slow transfer protocol, such as Xmodem or Kermit, try Zmodem or Ymodem/G instead. • Is your line noisy? If there is static on your line, the modem has to resend many blocks of data to insure accuracy.
Chapter 5 - Troubleshooting Getting Garbage Characters on the Monitor • Your computer and the remote computer may be set to different word lengths, stop bits, or parities. If you have connected at 8-N1, try changing to 7-E-1, or vice-versa, using your communications software. • You may be experiencing line noise. Enable error correction, if it is disabled, or hang up and call again; you may get a better connection.
MT2834ZPX Owner's Manual Chapter 6 - Testing Your Modem Local Analog Loopback Test/V.54 Loop 3 In this test, data from your computer or terminal is sent to your modem's transmitter, converted into analog form, looped back to the receiver, converted into digital form and then received back at your monitor for verification. No connection to the phone line is required. See Figure 6-1. Figure 6-1. Local Analog Loopback Test The test procedure is as follows: 56 1. Connect the modem to your computer.
Chapter 6 - Testing Your Modem 5. Your modem passes this test if the data entered from your keyboard are the same as the data received on your monitor. If different data is appearing on your monitor, your modem is probably causing the problem, although it could also be your computer. If your modem passes this test, but you are receiving errors while On-line, the remote modem or the phone line could be at fault.
MT2834ZPX Owner's Manual 5. Data is typed from the remote keyboard. For this test, typing multiple upper case "U" characters is a good way to send an alternating test pattern of ones and zeros. The data received by the local modem will enter its analog receiver, be converted to digital data, be reconverted into analog, and then looped through its transmitter back to the remote modem.
Chapter 6 - Testing Your Modem Note: The &T4 command must be set on the remote modem to run this test. 3. Type the Escape Sequence (+++AT or AT) which brings your modem into Command mode, while still maintaining the connection with the remote modem. 4. Type ATU2 and hit ENTER. The local modem responds to this command by transmitting an unscrambled marking signal, which causes the remote modem to place itself in Digital Loopback mode.
MT2834ZPX Owner's Manual Chapter 7 - Service, Warranty and Tech Support Introduction This chapter starts out with statements about your modem's 10-year warranty. The next section, Tech Support, should be read carefully if you have questions or problems with your modem. It includes the technical support telephone numbers, space for recording your modem information, and an explanation of how to send in your modem should you require service.
Chapter 7 - Service, Warranty and Tech Support On-line Warranty Registration To register your Multi-Tech product on-line, click on the following link: http://www.multitech.com/support/register.htm Tech Support Multi-Tech has an excellent staff of technical support personnel available to help you get the most out of your Multi-Tech product. If you have any questions about the operation of this unit, call 1-800972-2439. Please fill out the modem information (below), and have it available when you call.
MT2834ZPX Owner's Manual Service If your tech support specialist decides that service is required, modems may be sent (freight prepaid) to our factory. Return shipping charges will be paid by Multi-Tech Systems (within North America). Include the following with your modem: • a description of the problem. • return billing and return shipping addresses. • contact name and phone number. • check or purchase order number for payment if the modem is out of warranty.
Chapter 7 - Service, Warranty and Tech Support About 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. The phone number for the Multi-Tech BBS is (800) 392-2432 (USA and Canada) or (612) 7853702 (international and local).
MT2834ZPX Owner's Manual 7. When the download is complete, press ENTER to return to the File Menu. 8. To exit the BBS, type G and press ENTER. If you don’t know the file name 64 1. From the Main Menu, type F to access the Files Menu. For a list of file areas, type L, press ENTER, then type L and press ENTER again. (If you do not type the second L, you will list all of the files on the BBS.) 2. Mark each file area you would like to examine by typing its list number and pressing ENTER. 3.
Chapter 7 - Service, Warranty and Tech Support About CompuServe/Internet In addition to the BBS, Multi-Tech provides support through CompuServe's Modem Vendor Forum (GOMODEMVEN) under GO MULTITECH. Refer to your CompuServe documentation for special operating procedures. Multi-Tech is a commercial provider on the Internet, and we retrieve e-mail messages from the following mailboxes on a periodic basis: mtsmktg@multitech.com mtssales@multitech.com international@multitech.com writers@multitech.
MT2834ZPX Owner's Manual Appendix A - Technical Specifications Your MT2834ZPX data/fax modem meets the specifications listed below: Model Numbers MT2834ZPX Data Rates (modem) 33,600, 31,200, 28,800, 26,400, 24,000, 21,600, 19,200, 16,800, 14,400, 12,000, 9600, 7200, 4800, 2400, 1200, 0-300 bps Data Rates (fax) 14,400, 9600, 7200, 4800 bps Data Format Serial, binary, asynchronous at 0-300, 1200, 2400, 4800, 7200, 9600, 14,400, 16,800 or 19,200, 21,600, 24,000, 26,400, 28,800, 31,200, 33,600 bps Comp
Appendix A - Technical Specifications Intelligent Features Fully “AT command” compatible, microprocessor controlled remote configuration, EIA extended Automode, adaptive line probing, automatic symbol rate and carrier frequency during startup, retrain and rate renegotiation, autodial, redial, repeat dial, dial linking, pulse or tone dial, dial pauses, call status display, auto-parity and data rate selection, keyboard-controlled modem options, non-volatile memory and onscreen displays for modem option para
MT2834ZPX Owner's Manual Carrier Frequencies(Data) 1800 Hz V.32/V.32bis/V.32terbo/ Enhanced V.34 33.6K/31.2K/28.8K/26.4K/24K/21.6K/ 19.2K/16.8K/14.4K/12K/9.6K/4.8K Carrier Frequencies 2400 & 1200 bps (V.22bis/V.
Appendix A - Technical Specifications V.23 390 Hz Mark, 450 Hz Space for Transmit Originate 1300 Hz Mark, 2100 Hz Space for Transmit Answer 1300 Hz Mark, 2100 Hz Space for Receive Originate 390 Hz Mark, 450 Hz Space for Receive Answer Transmit Level -10dBm (dial-up) Frequency Stability ±0.01% Receiver Sensitivity -43 dBm under worst case conditions AGC Dynamic Range 43 dB Serial Interface EIA RS232C/ITU V.
MT2834ZPX Owner's Manual Appendix B - Tone Dial Frequencies Hz Digits 697 1 2 3 A 770 4 5 6 B 852 7 8 9 C * 0 # D 1336 1477 1633 941 Hz 1209 The tone-dialing method combines two frequencies for each of the twelve digits found on a Touch Tone dial pad. This method is referred to as Dual-Tone Multi-Frequency (DTMF) dialing.
Appendix C - FCC and Canadian Regulations Appendix C - FCC and Canadian Regulations FCC Regulations for Telephone Line Interconnection 1. This equipment complies with Part 68 of the Federal Communications Commission (FCC) rules. On the outside surface of this equipment is a label that contains, among other information, the FCC registration number and ringer equivalence number (REN). If requested, this information must be provided to the telephone company. 2.
MT2834ZPX Owner's Manual 6. 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 telephone network, the telephone company may request you remove the equipment from the network until the problem is resolved. 7. No repairs are to be made by you. Repairs are to be made only by Multi-Tech Systems or its licensees.
Appendix C - FCC and Canadian Regulations NOTE: 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 when the equipment is operated in a residential installation.
MT2834ZPX Owner's Manual 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 of a 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 certificated equipment.
Index Index Symbols &E0 .......................................................................................... 20 &E1 .......................................................................................... 20 &E14 ........................................................................................ 19 10/11 bit mode selection .......................................................... 27 16550 UART and Windows 3.1 ................................................ 20 A Abort Timer S7 ..............
MT2834ZPX Owner's Manual Cannot Make a Connection ..................................................... 51 Carrier Detect .......................................................................... 26 Carrier Detect Response Time ................................................ 42 Carrier Frequencies (Data) ...................................................... 68 Carrier Loss Disconnect Delay Time ....................................... 42 Changing Break Time ...............................................
Index Dialing a stored telephone ....................................................... 31 Dimensions .............................................................................. 69 DSR follows CD ....................................................................... 33 DTR Control ............................................................................. 26 DTR Dialing ............................................................................. 26 DTR Dropout Time .................................
MT2834ZPX Owner's Manual Intelligent Features .................................................................. 67 Interface ................................................................................... 69 Internet .................................................................................... 65 L L8 .......................................................................................54, 55 Limited Warranty ......................................................................
Index N Negotiate V.42 Mode ............................................................... 30 Noise Information .................................................................... 30 Non-volatile RAM ..................................................................... 35 Number Linking ....................................................................... 31 Number of Rings Until Modem Answers .................................. 45 S0 .....................................................................
MT2834ZPX Owner's Manual Rreset default values .............................................................. 36 Result Codes .....................................................................32, 36 Result codes ...................................................................... 16, 51 Result Codes Terse/Verbose selection .................................... 35 Retransmit ............................................................................... 32 Return Character ..............................
Index Transmission speed ................................................................. 17 Transmit buffer size ................................................................. 25 Transmit Level ......................................................................... 69 Trellis Coded Modulation selection .......................................... 34 U UARTs 16450 16550 8250A Buffers ........................................................................ 20, 21, 54 ..................................
