Multitech MultiModem MT2834ZDX Series Manual de usuario

MT2834ZDX-Series

External Data/Fax Modem

User's Guide

User Guide

MT2834ZDX-Series

S000309C Rev. C

This publication may not be reproduced, in whole or in part, without prior expressed written permission

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. 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.

Revision Date Description

A 09/15/03 Initial release of the User Guide for CD publication.

B 09/15/04 Update the Warranty and Repairs statement with current URLs.

C 08/22/05 Add WEEE Statement as Appendix D.

Patents

This device is covered by one or more of the following patents: 6,031,867; 6,012,113; 6,009,082;

5,905,794; 5,864,560; 5,815,567; 5,815,503; 5,812,534; 5,809,068; 5,790,532; 5,764,628; 5,764,627;

5,754,589; 5,724,356; 5,673,268; 5,673,257; 5,644,594; 5,628,030; 5,619,508; 5,617,423; 5,600,649;

5,592,586; 5,577,041; 5,574,725; 5,559,793; 5,546,448; 5,546,395; 5,535,204; 5,500,859; 5,471,470;

5,463,616; 5,453,986; 5,452,289; 5,450,425; D353,598; 5,355,365; 5,309,562; 5,301,274. Other patents

pending.

Trademarks

Multi-Tech and the Multi-Tech logo are trademarks of Multi-Tech Systems, Inc. All other brand and

product names mentioned in this publication are trademarks or registered trademarks of their respective

companies.

Technical Support

Country By Email By Phone

U.S. and Canada: [email protected]m (800) 972-2439

World Headquarters

Multi-Tech Systems, Inc.

2205 Woodale Drive

Mounds View, Minnesota 55112 U.S.A.

(763) 785-3500 or (800) 328-9717

Fax (763) 785-9874

http://www.multitech.com

Table of Contents

Multi-Tech Systems, Inc. MT2834ZDX User's Guide 3

Contents

Chapter 1 – Introduction and Installation.................................................................................................4

Getting Started...........................................................................................................................................4

Safety Warnings.........................................................................................................................................4

We Supply..................................................................................................................................................4

Features.....................................................................................................................................................4

Modem Installation.....................................................................................................................................5

Step 1: Attach the Self-Adhesive Feet..................................................................................................5

Step 2: Connect the Modem to Your System........................................................................................5

Step 3: Install the Modem Driver..........................................................................................................6

Step 4: Install Data Communications Software....................................................................................6

Removing Your Old Modem from Windows...............................................................................................6

Chapter 2 – Operation.................................................................................................................................7

Front Panel ................................................................................................................................................7

Chapter 3 – AT Commands, S-Registers and Result Codes ..................................................................8

AT Commands...........................................................................................................................................8

S-Registers..............................................................................................................................................18

Register Unit Range Default Description ............................................................................................18

Result Codes ...........................................................................................................................................19

Chapter 4 – Troubleshooting...................................................................................................................20

Appendix A – Regulatory Compliance....................................................................................................24

Regulatory Compliance ...........................................................................................................................24

Regulatory Requirements for the United States .................................................................................24

Regulatory Requirements for Canada.................................................................................................27

Appendix B – Technical Specifications..................................................................................................29

Appendix C – Warranty and Service .......................................................................................................30

Multi-Tech Warranty Statement ..........................................................................................................30

Repair Procedures for U.S. and Canadian Customers.......................................................................30

Repair Procedures for International Customers (Outside U.S.A. and Canada)..................................31

Repair Procedures for International Distributors.................................................................................31

Replacement Parts..............................................................................................................................31

Appendix D - Waste Electrical and Electronic Equipment (WEEE) Statement...................................32

Index...........................................................................................................................................................33

Chapter 1 – Introduction and Installation

Multi-Tech Systems, Inc. MT2834ZDX User's Guide 4

Chapter 1 – Introduction and

Installation

Getting Started

This guide shows you step-by-step how to set up your Multi-Tech MT2834ZDX–Series modem.

For detailed information on how to install, test, and use your modem, see the User Guide, located on the

MT2834ZDX system CD provided with your modem.

Safety Warnings

•Use this product only with UL- and CUL-listed computers (US).

•Never install phone wiring during a lightning storm.

•Never install a phone jack in a wet location unless the jack is specifically designed for wet locations.

•Never touch uninsulated phone wires or terminals unless the phone line has been disconnected at the network

interface.

•Use caution when installing or modifying phone lines.

•Avoid using a phone during an electrical storm; there is a risk of electrical shock from lightning.

•Do not use a phone in the vicinity of a gas leak.

•To reduce the risk of fire, use only 26 AWG or larger telephone line cord.

We Supply

•The MT2834ZDX-Series data/fax modem

•A DC power supply module

•One set of four plastic feet

•One telephone cable

•A system CD containing modem drivers, the User Guide, Phone Tools (a data communications program), and

Acrobat Reader

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.34 specification for

data rates up to 33,600 bps. The MT2834ZDX’s features include:

•Support of data rates of 33,600 and 31,200 bps (ZDXb only), 28,800, 26,400, 24,000, 21,600, 19,200,

16,800, 14,400, 12,000, 9600, 7200, 4800, 2400, 1200, and 300 bps for communicating with older modems

as well as with other V.34 modems.

•Automatic fallback to slower speeds in noisy line conditions and fall-forward to faster speeds as conditions

improve.

•ITU-T V.42 LAP-M and MNP Classes 2–4 error correction.

•Data transfer rates up to 115,200 bps with V.42bis data compression.

•Serial port data rates adjustable to 115,200 bps.

•Autodial, redial, pulse (rotary) and touch-tone dial.

•Dial tone and busy signal detection for reliable call progress reporting.

•Compatibility with the standard AT command set used by most communication programs.

•Nonvolatile memory for storage of custom settings and two telephone numbers.

•Sends and receives faxes from your computer at 14,400, 9600, 4800, and 2400 bps.

•Responds to EIA TR29.2 Class 2 fax commands.

Chapter 1 – Introduction and Installation

Multi-Tech Systems, Inc. MT2834ZDX User's Guide 5

Modem Installation

Step 1: Attach the Self-Adhesive Feet

The modem comes with a set of self-adhesive plastic feet, which you can optionally attach to the modem. To

install, simply peel them from their paper strip and press them into the recesses on the bottom of the modem.

Step 2: Connect the Modem to Your System

Turn off your computer. Place the modem in a convenient location, and then connect it to your computer’s serial

port, the phone line, AC power, and your phone.

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 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.

PHONE Connection

You may optionally plug a telephone into the PHONE jack. This jack is provided as a convenience; you

may also plug a telephone into a duplex jack inserted into your wall jack.

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). When you apply

power, the modem performs a diagnostic self-test, indicated by the speed indicators flashing in se-

quence for a second or two, after which the 28 indicator should light. If this does not happen, check that

the power switch is on, the power supply is solidly connected, and the AC outlet is live. If these

measures do not work, see the Troubleshooting chapter..

Chapter 1 – Introduction and Installation

Multi-Tech Systems, Inc. MT2834ZDX User's Guide 6

Step 3: Install the Modem Driver

If you use Windows 98+, you must install the modem driver, which is installed using the Windows Plug and Play

feature. Follow the four-step procedure below. If you use another operating system, see the Appendix.

1. Make sure your modem is connected properly, and then turn on your computer. Windows should detect

your new modem and open the Install New Modem wizard.

1. Insert the system CD, and then click OK.

2. Windows installs and configures the modem.

3. Click Finish to exit.

For Windows NT, the Install New Modem wizard presents one additional prompt before Step 2. At this prompt,

select: Don’t detect my modem; I will select it from a list, and then click Next.

A dialog box with a list of manufacturers and a list of modem models appears. Select your modem. Continue with

Step 2 above.

Note: If Windows cannot identify your modem (for instance, if it identifies your modem as a “Standard Modem”),

click Change. A dialog box with a list of manufacturers and a list of modems appears.

Step 4: Install Data Communications Software

Data communications software is designed to send and receive messages. Multi-Tech includes PhoneTools

communications software with your modem. However, the modem will work with most data communications

software. To install PhoneTools, insert the CD into the CD-ROM drive; click the PhoneTools icon. You will be

asked to choose your language. The software automatically loads onto your PC.

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 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. Click the Start button, point to Settings, and click Control Panel.

2. Double-click the Modems icon to open the Modems Properties dialog box.

3. In the list box, select the old modem.

4. Click Remove, then click Close.

5. The next time you dial a HyperTerminal connection, it will select your new modem and ask you to confirm the

selection.

Chapter 2 – Operation

Multi-Tech Systems, Inc. MT2834ZDX User's Guide 7

Chapter 2 – Operation

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.24 interface.

Carrier Detect. The CD LED lights when the modem detects a valid carrier signal from another modem. It is on when

the modem is communicating with the other modem and off when the link is broken.

33,600 bps. The 33 LED lights by itself when the modem connects 33,600 bps operation. This LED also lights or

blinks in combination with the 14 LED to indicate speeds between 16,800 and 26,400 bps (see table).

14,400 bps. The 14 LED lights by itself when the modem connects at 14,400 bps. The 14 LED lights or blinks in

combination with the 28 LED to indicate speeds between 16,800 and 26,400 bps. 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. The TR LED lights when a datacomm program initializes the modem. It means the modem is ready

for an outgoing or incoming call. It goes off when the datacomm program disconnects the COM port. When it goes

off, a connected modem will disconnect. The state of the TR LED matches that of the DTR circuit on pin 20 of the RS-

232C/V.24 interface.

Error Correction (V.42). The EC LED lights continuously when the modem is in error correction mode, and blinks

when compression is activated.

Fax. The FX LED lights when the modem is in fax mode.

Note: When you turn on the MT2834ZDX, the speed lights flash briefly as the modem does a self-test, then the LED

for the default modem baud rate lights. The default rate for the MT2834ZDX is 28,800 bps (33,600 bps for the ZDXb)

unless you select and store another baud rate. After a call, the LEDs for the connection’s baud rate remain lit until

another call is made or the modem is reset. If you connect at a rate under 9600 bps, all speed LEDs remain off after

the connection is broken, even though the modem is still turned on.

Speed Indicator Blink Rates

The 33, 14, and 96 speed indicators light singly or in combination to indicate data rates.

Chapter 3 – AT Commands, S-Registers, and Results Codes

Multi-Tech Systems, Inc. MT2834ZDX User's Guide 8

Chapter 3 – AT Commands, S-

Registers and Result Codes

AT Commands

This section summarizes the AT commands for this modem.

Command: AT Attention Code

Values: n/a

Description: The attention code precedes all command lines except A/, A:, and escape codes.

Command: RETURN Key

Values: n/a

Description: Press the RETURN (ENTER) key to execute most commands.

Command: A Force Answer Mode

Values: n/a

Description: Answer call before final ring.

Command: A/ Repeat Last Command

Values: n/a

Description: Do not precede this command with AT. Do not press RETURN to execute.

Command: A: Continuous Redial

Values: n/a

Description: Redial last number until answered (10 redials in DOC modems). Do not precede this command with

AT or press RETURN to execute.

Command: &AnAnswerback

Values: n = 0 or 1

Default: 0

Description: &A0 Disables answerback.

&A1 Enables answerback reply to an ID request.

Command: $AnAuto-Reliable Buffering

Values: n = 0 or 1

Default: 0

Description: $A0 Discard data received during establishment of a reliable connection.

$A1 Buffer data received during establishment of a reliable connection.

Command: #AnAuto Speed Detection in Answer Mode

Values: n = 0–3

Default: 0

Description: #A0 Start at maximum speed and fall back to a lower speed (26400, 24000, 21600, 19200, 16800,

14400, 12000, 9600, 7200, 4800, 2400, 1200, or 300 bps) as line conditions warrant.

#A1 Maximum speed only.

#A2 Start at maximum speed and fall back decrementally to 4800 bps only.

#A3 Start at 2400 bps and fall back to 1200 to 300 bps only.

Command: &BSnMaximum Reliable Block Size

Values: n = 0 or 1

Default: 1

Description: &BS0 Maximum transmit block size of 64 characters.

&BS1 Maximum transmit block size of 256 characters.

Chapter 3 – AT Commands, S-Registers, and Results Codes

Multi-Tech Systems, Inc. MT2834ZDX User's Guide 9

Command: $BAnBaud Adjust

Values: n = 0 or 1

Default: 0

Description: $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.)

Command: &CnCarrier Detect Control

Values: n = 0, 1, 2, or 4

Default: 1

Description: &C0 Force Carrier Detect high.

&C1 Let Carrier Detect follow carrier signal.

&C2 Let Carrier Detect drop on disconnect, then go high again (for some CBX phone systems).

&C4 Reset modem when Carrier Detect drops.

Command: &CDnCleardown at Disconnect

Values: n = 0, 1

Default: 0

Description: &CD0 Execute a cleardown at disconnect.

&CD1 Do not execute a cleardown at disconnect.

Command: DsDial

Values: s = dial string (phone number and dial modifiers)

Default: none

Description: Dial telephone number s, where s may include up to 60 digits and T, P, R, comma, colon, and

semicolon characters.

Command: DsNdStore Telephone Number

Values: s = dial string (phone number and dial modifiers)

d = 0 or 1

Default: none

Description: To store, enter D followed by dial string s, then N followed by directory number d.

Example: ATDT9,5551212N1.

Command: &DnData Terminal Ready Control

Values: n = 0–3

Default: 2

Description: &D0 Modem ignores DTR signal.

&D1 When DTR drops, the modem hangs up. While DTR is low, the modem accepts commands

but will not dial or auto-answer until DTR goes high again.

&D2 Same as &D1.

&D3 When DTR drops, the modem hangs up and resets as if an ATZ command were issued.

Command: $DnDTR Dialing

Values: n = 0 or 1

Default: 0

Description: $D0 Do not dial when DTR goes high.

$D1 Dial stored number N0 when DTR goes high.

Command: %DCnAT Command Control

Values: n = 0 or 1

Default: 0

Description: %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: %DFnFormat Line Probe Data

Values: n = 0 or 1

Default: 0

Description: %DF0 Display data in graph format. Y axis is gain shown in dBm.

%DF1 Display data in table format. Gain is shown numerically in dBm at 75Hz increments from

150Hz to 3750Hz.

Chapter 3 – AT Commands, S-Registers, and Results Codes

Multi-Tech Systems, Inc. MT2834ZDX User's Guide 10

Command: %DPnRead Line Probe Data

Values: n = 0 or 1

Default: 0

Description: %DP0 Do not read and store line probe information from DSP during handshake.

%DP1 Read and store line probe information from DSP during handshake.

Command: >DTnDTMF Detection

Values: n = 0 or 1

Default: 0

Description: >DT0 The modem will not detect DTMF tones.

>DT1 The modem will detect and report DTMF tones when it is off-hook.

Command: EnEcho Command Mode Characters

Values: n = 0 or 1

Default: 1

Description: E0 Do not echo keyboard input to the terminal.

E1 Do echo keyboard input to the terminal.

Command: &EnV.42 Error Correction Modes

Values: n = 0, 1, or 2

Default: 1

Description: &E0 V.42 non-error correction mode (V.42 disabled).

&E1 V.42 auto-reliable mode.

&E2 V.42 reliable mode (V.42 enabled).

Command: &EnModem-Initiated Flow Control

Values: n = 3, 4, or 5

Defaults: 4

Description: &E3 Flow control disabled.

&E4 CTS/RTS hardware flow control.

&E5 XON/XOFF software flow control.

Command: &EnXON/XOFF Pass-Through

Values: n = 6 or 7

Defaults: 6

Description: &E6 Respond to and discard XON/XOFF characters when &E5 is selected.

&E7 Respond to and pass through XON/XOFF characters when &E5 is selected.

Command: &EnHewlett Packard ENQ/ACK Pacing

Values: n = 8 or 9

Default: 8

Description: &E8 Ignore ENQ/ACK pacing characters.

&E9 Respond to ENQ/ACK pacing characters.

Command: &EnNon-Error Correction Mode Flow Control

Values: n = 10 or 11

Default: 10

Description: &E10 Disable non-error correction mode flow control.

&E11 Enable non-error correction mode flow control.

Command: &EnPacing (Computer-Initiated Flow Control)

Values: n = 12 or 13

Default: 13

Description: &E12 Pacing disabled.

&E13 Pacing enabled.

Command: &EnData Compression

Values: n = 14 or 15

Default: 15

Description: &E14 Data compression disabled.

&E15 Data compression enabled.

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