Multitech MultiModem MT2834ZPX Owner's Manual
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Multitech MultiModem MT2834ZPX Owner's Manual

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Summary of Contents for Multitech MultiModem MT2834ZPX

  • Page 1 Model Number MT2834ZPX Owner's Manual...
  • Page 2 Furthermore, Multi-Tech Systems, Inc. reserves the right to revise this publication and to make changes from time to time in the content hereof without obligation of Multi-Tech Systems, Inc. to notify any person or organization of such revisions or changes.

  • Page 3: Table Of Contents

    Chapter 2 - Installation and Configuration Installation ... 9 Safety Warnings ... 9 Configuration/Installation Procedure ... 10 Is Your MT2834ZPX Ready for Use? ... 12 Operating Your MT2834ZPX ... 13 Simple Operations ... 14 Chapter 3 - Software Configuration Introduction ... 15 ConfiguringSoftware for Your Modem ...
  • Page 4 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 ... 54 File Transfer Is Slower Than It Should Be ...

  • Page 5: Chapter 1 - Introduction And Description

    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...

  • Page 6: Fax Features

    The MT2834ZPX is a internal half-length fax/modem card for IBM Personal Computers (PC, XT, AT Pentium or compatible units); and fits into a full- or half-size expansion slot. The MT2834ZPX provides dial-up asynchronous communication capability with other personal computers, terminals, on-line computer services or other types of computer systems.

  • Page 7: How To Use This Manual

    Chapter 2 documents the procedure for connecting the MT2834ZPX to your computer and to the phone line. Details are given, supported by illustrations on determining Base I/O addressing and setting IRQ values as a guide for installing your MT2834ZPX to the point of operation. Chapter 3 - Software Configuration Chapter 3 documents communication software configuration recommended specifically for the MT2834ZPX.
  • Page 8 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.

  • Page 9: 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: Opening your PC. Setting card configuration (determining COM port setting and IRQ level).

  • Page 10: Configuration/Installation Procedure

    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 Make sure your computer and any peripheral equipment connected to it, are turned off.
  • Page 11 Chapter 2 - Installation and Configuration Figure 2-1. MT2834ZPX Printed Circuit Board and Alternate COM Port/IRQ Settings...

  • Page 12: Is Your Mt2834Zpx Ready For Use

    Fasten the retaining bracket to the computer chassis and replace the cover. Your MT2834ZPX requires a modular LINE JACK . This is typically an RJ11C or RJ11W jack, but could also be an RJ12 or RJ13 jack. To connect the modem to the PSTN line, plug one end of...

  • Page 13: Operating Your Mt2834Zpx

    (If however, you know that your application does not follow this profile, please refer to Chapters 3 and 4 for AT Commands and S-Registers.) In operating your MT2834ZPX it is likely that you will use your data communications software to either: •...

  • Page 14: Simple Operations

    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.

  • Page 15: Chapter 3 - Software Configuration

    However, if your MT2834ZPX does not appear on a modem list, you may use the MultiModemII initialization string.

  • Page 16: Pc Initialization Strings

    MT2834ZPX and most communications programs. The carriage return character is defined in the MT2834ZPX in S-register S3; if you change it, you must also change the carriage return character code used in your communications software. If you send a command directly to the...

  • Page 17: Changing Default Parameters

    Configuring Software for Your Computer You must configure your communications software to match your computer’s configuration. If the MT2834ZPX is connected to the COM2 communications port, you must tell the software you are using COM2. Another important parameter is the serial port baud rate. This...

  • Page 18: Configuring Software For The Remote System

    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.

  • Page 19: File Transfer Protocols

    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).

  • Page 20: Disabling Error Correction

    Disabling Error Correction By default, the MT2834ZPX is set to auto-reliable mode. In this mode the MT2834ZPX determines during the handshake whether the other modem is using V.42 error correction. If it is, the MT2834ZPX then switches itself to reliable mode and enables error correction.
  • Page 21 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: 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: After you save SYSTEM.INI you must restart Windows for the change to take effect.

  • Page 22: Chapter 4 - At Commands, S-Registers And Result Codes

    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., MultiExpress for Windows), the software tells you to enter phone numbers and other information.

  • Page 23: Modem At Commands

    “On-Line” mode, and is ready to communicate with a host site. If no connection signal is detected within 45 seconds (this time period can be adjusted by S-Register S7), the MT2834ZPX goes On Hook/ hangs up and returns to Command mode. At this point, your video displays “...
  • Page 24 MT2834ZPX Owner's Manual COMMAND: VALUES: DEFAULT: DESCRIPTION: Answer call, even if no ring present. COMMAND: VALUES: DEFAULT: DESCRIPTION: Repeat last command. (Do not precede this command with AT. Do not hit RETURN to execute.) COMMAND: VALUES: DEFAULT: DESCRIPTION: Continuous redial (10 redials in DOC units) of last number until answered.
  • Page 25 Chapter 4 - AT Commands, S-Registers and Result Codes COMMAND: #A n VALUES: n = 0 thru 3 DEFAULT: 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.
  • Page 26 MT2834ZPX Owner's Manual COMMAND: &C n 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.
  • Page 27 Chapter 4 - AT Commands, S-Registers and Result Codes COMMAND: %DF n 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: %DP n VALUES: n = 0 or 1...
  • Page 28 MT2834ZPX Owner's Manual COMMAND: &E n (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.
  • Page 29 Chapter 4 - AT Commands, S-Registers and Result Codes COMMAND: $F n VALUES: n = 0 or 1 DEFAULT: DESCRIPTION: $F0 selects do not fall back to normal connect if CR received. $F1 selects fall back to normal connect if CR received. COMMAND: &G n VALUES:...
  • Page 30 MT2834ZPX Owner's Manual COMMAND: VALUES: DEFAULT: Read Only Command DESCRIPTION: The I9 command is a query to display this modem's characteristics when operating within Windows 95. Entering ATI9 <cr> 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.)
  • Page 31 Chapter 4 - AT Commands, S-Registers and Result Codes COMMAND: $MB n 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.
  • Page 32 MT2834ZPX Owner's Manual COMMAND: &P n VALUES: n = 0 or 1 DEFAULT: &P1 DESCRIPTION: &P0 selects 60-40 pulse ratio. &P1 selects 67-33 pulse ratio. COMMAND: VALUES: n = 0, 1 or 2 DEFAULT: DESCRIPTION: Q0 means Result Codes sent.
  • Page 33 Chapter 4 - AT Commands, S-Registers and Result Codes COMMAND: &RF n 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: DESCRIPTION: Sets value of S-Register “r”...
  • Page 34 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.
  • Page 35 Chapter 4 - AT Commands, S-Registers and Result Codes COMMAND: VALUES: n = 0, 1, 2, or 3 DEFAULT: 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.
  • Page 36 MT2834ZPX Owner's Manual COMMAND: VALUES: n = 0, 1, 2, 3 or 4 DEFAULT: 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.
  • Page 37 Chapter 4 - AT Commands, S-Registers and Result Codes COMMAND: ;(Semi-Colon) VALUES: DEFAULT: DESCRIPTION: Causes return to Command Mode after dialing. COMMAND: ! (Exclamation) VALUES: DEFAULT: DESCRIPTION : Causes modem to flash On-Hook. COMMAND: VALUES: DEFAULT: DESCRIPTION : Causes modem to wait for ringback, then 5 seconds of silence before processing next part of command.

  • Page 38: Remote Configuration

    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.

  • Page 39: Password Commands

    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.

  • Page 40: S-Registers

    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 S- Register, enter the letter S , followed by the S-Register number and an equals sign ( = ) .
  • Page 41 Chapter 4 - AT Commands, S-Registers and Result Codes Return Character Unit: ASCII Character Range: 0-127 Default: 13 Description: Defines the character recognized as Carriage Return (RE- TURN) or “Enter”. Line Feed Character Unit: ASCII Character Range: 0-127 Default: 10 Description: Defines the character recognized as LINE FEED.
  • Page 42 MT2834ZPX Owner's Manual Pause Time for Comma Unit: 1 second Range: 0-255, 4-255** Default: 2, 4** Description: Sets the length of the pause caused by a comma inserted in a dialing command. Carrier Detect Response Time Unit: 100 mSec. Range: 1-255...
  • Page 43 Chapter 4 - AT Commands, S-Registers and Result Codes Remote Configuration Escape Character Unit: ASCII Character Range: 0-127 Default: 37 ( % sign ) Description: Defines the remote configuration escape character. Changing Break Time Unit: 10 mSec. Range: 0-2.5 sec Default: 250 Description: S17 defines the break time (space) to local PC.
  • Page 44 MT2834ZPX Owner's Manual Local Inactivity Timer Unit: minutes Range: 1-255 Default: 20 Description: Defines the amount of idle time that can elapse between AT commands after the SETUP password has been entered. Inactivity Timer Unit: 1 minute Range: 0-255 Default: 0 Description: Inactivity timer used to disconnect the modem.
  • Page 45 Chapter 4 - AT Commands, S-Registers and Result Codes Time Between DTR Inactive and Modem Off-Hook Unit: 1 Second Range: 0-255 seconds Default: 0 Description: Sets the time between DTR inactive (low) and the modem going off-hook . The DTR Busy-out feature is disabled with S36=0. Time Between DTR Active and Modem On-Hook Unit: 1 Second Range: 0-255 seconds...

  • Page 46: Result Codes

    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.
  • Page 47 Chapter 4 - AT Commands, S-Registers and Result Codes Table 4-3 &Q1 "Standard AT" Result Codes TERSE VERBOSE 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...

  • Page 48: At Commands And S-Register Summary

    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.

  • Page 49: 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.
  • Page 50 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.

  • Page 51: The Modem Dials But Cannot Make A Connection

    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;...
  • Page 52 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.

  • Page 53: The Modem Disconnects While Online

    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).

  • Page 54: The Modem Cannot Connect When Answering

    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 •...

  • Page 55: Getting Garbage Characters On The Monitor

    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-N- 1, try changing to 7-E-1, or vice-versa, using your communications software.

  • Page 56: Chapter 6 - Testing Your Modem

    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.

  • Page 57: Digital Loopback Test/V.54 Loop 2 (Local/Manual)

    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.

  • Page 58: Digital Loopback Test/V.54 Loop 2 (Remote/Automatic)

    MT2834ZPX Owner's Manual 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.
  • Page 59 Note: The &T4 command must be set on the remote modem to run this test. Type the Escape Sequence ( +++AT<CR> or <BREAK>AT<CR> ) which brings your modem into Command mode, while still maintaining the connection with the remote modem. Type ATU2 and hit ENTER.

  • Page 60: Chapter 7 - Service, Warranty And Tech Support Introduction

    CompuServe/Internet Forums. Limited Warranty Multi-Tech Systems, Inc. ( “MTS” ) warrants that its products will be free from defects in material or workmanship for a period of ten years from the date of purchase, or if proof of purchase is not provided, ten years from date of shipment.

  • Page 61: On-Line Warranty Registration

    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 1-800- 972-2439.

  • Page 62: Service

    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.

  • Page 63: About The Multi-Tech Bbs

    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) 785- 3702 (international and local).
  • Page 64 MT2834ZPX Owner's Manual When the download is complete, press ENTER to return to the File Menu. To exit the BBS, type G and press ENTER. If you don’t know the file name 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.

  • Page 65: About Compuserve/Internet

    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...

  • Page 66: Appendix A - Technical Specifications

    MT2834ZPX Owner's Manual Appendix A - Technical Specifications Your MT2834ZPX data/fax modem meets the specifications listed below: Model Numbers Data Rates (modem) Data Rates (fax) Data Format Compatibility Error Correction Data Compression Speed Conversion Flow Control Options Mode of Operation...
  • Page 67 Intelligent Features Command Buffer Modulation Fax Modulations Fax Carrier Frequencies Appendix A - Technical Specifications Fully “AT command” compatible, microprocessor controlled remote configuration, EIA extended Automode, adaptive line probing, automatic symbol rate and carrier frequency during start- up, retrain and rate renegotiation, autodial, redial, repeat dial, dial linking, pulse or tone dial, dial pauses, call status display, auto-parity and data rate...
  • Page 68 MT2834ZPX Owner's Manual Carrier Frequencies(Data) Carrier Frequencies 2400 & 1200 bps (V.22bis/V.22 or Bell 212A Standard) Carrier Frequencies, 300 bps(Bell Standard) Carrier Frequencies V.21 1800 Hz V.32/V.32 bis /V.32 terbo / 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 Transmit Originate: Transmit Answer: Receive Originate:...
  • Page 69 V.23 Transmit Level Frequency Stability Receiver Sensitivity AGC Dynamic Range Serial Interface Bus Type Berg Jumpers Berg Jumpers Connectors Diagnostics Operating Temperature Power Consumption Dimensions Weight Warranty Appendix A - Technical Specifications 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...

  • Page 70: Appendix B - Tone Dial Frequencies

    MT2834ZPX Owner's Manual Appendix B - Tone Dial Frequencies 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. The four horizontal...

  • Page 71: Appendix C - Fcc And Canadian Regulations

    Appendix C - FCC and Canadian Regulations FCC Regulations for Telephone Line Interconnection 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).
  • Page 72 MT2834ZPX Owner's Manual 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.
  • Page 73 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.

  • Page 74: Canadian Limitations Notice

    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.

  • Page 75: Index

    Symbols &E0 ... 20 &E1 ... 20 &E14 ... 19 10/11 bit mode selection 16550 UART and Windows 3.1 Abort Timer ... 41 About CompuServe About the Multi-Tech BBS AGC Dynamic Range Alternate COM Port/IRQ Settings ASCII code ... 16 AT command set ...
  • Page 76 MT2834ZPX Owner's Manual Cannot Make a Connection Carrier Detect ... 26 Carrier Detect Response Time Carrier Frequencies (Data) Carrier Loss Disconnect Delay Time Changing Break Time Clear to Send ... 32 Cleardown on disconnect COM ports ... 17, 21 COMM.DRV ...21, 54...
  • Page 77 Dialing a stored telephone Dimensions ... 69 DSR follows CD ... 33 DTR Control ... 26 DTR Dialing ... 26 DTR Dropout Time Enq/Ack pacing ... 28 Error Correction ... 66 Error correction ... 20 Escape Code Character Escape modes selection Exit Command Mode Extended DTMF characters Factory default values...
  • Page 78 MT2834ZPX Owner's Manual Intelligent Features Interface ... 69 Internet ... 65 ...54, 55 Limited Warranty ... 60 Line Feed Character ... 41 Line Probe ... 27 List operating parameters Login Password ... 39 Long space “break ... 36 Loopback Test Enabled...
  • Page 79 Negotiate V.42 Mode Noise Information ... 30 Non-volatile RAM ... 35 Number Linking ... 31 Number of Rings Until Modem Answers ... 40 Off Hook control ... 29 Operating Temperature Out-of-band Escape Sequence Pacing ... 28 Parameters ...15, 17 Changing defaults Parity ...
  • Page 80 MT2834ZPX Owner's Manual Rreset default values Result Codes ...32, 36 Result codes ... 16, 51 Result Codes Terse/Verbose selection Retransmit ... 32 Return Character ... 41 Return character ... 16 Return to Command Mode after dialing Rings Which Have Occurred ...
  • Page 81 Transmission speed Transmit buffer size Transmit Level ... 69 Trellis Coded Modulation selection UARTs ... 20, 21, 54 16450 ... 20 16550 ... 20, 21, 54 8250A ... 20 Buffers ... 20, 21 V.32terbo handshaking process V.34 Line Probe ... 27 V.42 ...

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