Multitech MT3400ZLX User manual

Model MT3400ZLX
Owner’s Manual

Owner’s Manual
MultiMobileTM
Model # MT3400ZLX
P/N 82065101
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 © 1998 by Multi Tech Systems, Inc.
Multi-Tech Systems, Inc. makes no representations or
warranties with respect to the content 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.
Record of Revisions
Revision Description
B Minor technical, editorial and format
(8/11/97) changes.
TRADEMARKS
Trademarks of Multi-Tech Systems, Inc. are as follows:
MultiMobile, Multi-Tech, and the Multi-Tech logo. All other
trademarks are owned by their respective companies.
Multi-Tech Systems, Inc.
2205 Woodale Drive
Mounds View, Minnesota 55112 U.S.A.
[phone] or [phone]
U. S. FAX [phone]
Fax-Back Service 612-717-5888
Technical Support [phone]
BBS [phone] or [phone]
Internet Address: http://www.multitech.com
Technical Writer: mark@ multitech.com

Contents
Chapter 1 - Introduction and Description
About This Manual....................................................6
About This Product ...................................................6
Specifications ...........................................................7
PC Card Interface..............................................7
Dimensions........................................................7
Weight................................................................7
Power.................................................................7
Power Consumption ..........................................7
Cable and Connector ........................................7
Modem Characteristics .....................................7
Fax .....................................................................7
Features....................................................................8
System Requirements ..............................................8
Ship Kit Contents......................................................8
Chapter 2 - Installation Quick Start
Introduction...............................................................9
Safety Warnings .......................................................9
Installing The MT3400ZLX Card ............................10
Working With Windows 95 .....................................11
Using the .INF File in the Bundled Diskette....12
Installing under Windows NT 4.0 ...........................13
Using the Standard Modem Type (for 28,800
model) ...........................................................13
Using the .INF File in the Bundled Diskette....14
Chapter 3 - AT Commands, S-Registers
and Result Codes
Introduction.............................................................15
How To Use AT Commands....................................15
Basic AT Commands ..............................................16
AT& (Ampersand) Commands ...............................20
AT% (Percent) Commands.....................................22
AT\ (Back Slash) Commands ................................22

S-Registers (ATSn=x).............................................26
Result Codes ..........................................................31
Chapter 4 - Troubleshooting
Introduction.............................................................33
No response to AT commands ........................33
The modem does not execute the command
line .................................................................33
The modem does not give a response after
an AT command was executed .....................34
The modem gives an ‘ERROR’ response
after an AT command was executed ............34
The modem goes off-hook and disables the
telephone line................................................34
The modem does not auto-answer the phone 34
The software does not control the modem
properly or can not detect the modem..........35
The characters on the screen are doubled.....35
No text appears on the screen in Data mode.35
No text appears on the screen when in
Command mode............................................35
The modem does not dial a phone number
after Execution of AT dial command .............36
Communications software dials, but Fails ......36
The modem Connects with some modems,
but not others ................................................36
When dialing another modem, You receive a
‘CONNECT’ response, but nothing else .......36
The modem speaker does not make any
sound when Connecting to another modem 36
The modem loses the connection when
in use.............................................................37
The modem does not connect with another
modem ..........................................................37
Occasionally, the modem gives a burst of
errors. ............................................................37
The modem gets random errors in
transmitted data. ...........................................37
After Downloading a file, the File does not

store on your disk drive.................................38
The text on the screen is not legible...............38
When using V.42bis or MNP5, some features
are disabled...................................................38
When connecting to another modem, the
modem reports a higher Connect baud rate
that it is really using ......................................39
COM Port and IRQ Conflicts ..................................39
Windows 95 .....................................................39
Chapter 5 - Service
Limited Warranty ....................................................40
On-line Warranty Registration................................41
Software User License Agreement ........................41
Tech Support ..........................................................43
Recording Modem Information...............................43
Service ....................................................................44
About the Multi-Tech BBS ......................................45
How to Use the Multi-Tech BBS......................45
About CompuServe/Internet...................................46
About the Multi-Tech Fax-Back System .................47
Appendix A - Specifications
Data: ................................................................48
Fax:..................................................................48
Physical: ..........................................................48
Appendix B - Selecting Hardware
Settings
COMx Ports .....................................................49
Interrupt Requests (IRQs) ...............................49
Appendix C - Regulatory Information
FCC Regulatory Statements ..................................51
Consumer Instructions ....................................51
FCC Fax Update .............................................54
Canadian Limitations Notice ..................................54
Index

6
MT3400ZLX Owner’s Manual
Chapter 1 - Introduction and Description
About This Manual
This manual explains how to install and use your
MT3400ZLX Fax/Modem card. This chapter offers
an overview of the MT3400ZLX. It includes a
product overview, specifications and features ,
systems requirements and ship kit contents.
About This Product
The MT3400ZLX is a multifunction communication
device that lets you perform multiple communication
tasks at the same time:
• transmit and receive data at up to 33,600 bps
(auto-negotiates to the fastest possible speed),
and
• send and receive faxes from computers or fax
machines.
The MT3400ZLX is a credit-card-size Type II
PCMCIA card that complies with the PCMCIA 2.1
and JEIDA 4.1 standards and works with computers
that incorporate a compatible interface.
It is Bell, ITU-T and AT command compatible,
allowing it to be used worldwide with today’s popular
communication software programs. You can send
and receive faxes with any Group 3 fax machine.
Using standard phone lines, the data
communication functions of the MT3400ZLX permits
you access the Internet, transmit E-Mail, send and
receive information and communicate with other
PCs, Bulletin Board Services (BBS) or on-line
computer networks such as CompuServe and
America On line.

7
1 - Introduction and Description
Specifications
PC Card Interface
PCMCIAType II
Dimensions
3.37” X 2.128” X 0.197”
(85.6 mm X 54 mm X 5 mm)
Weight
1.225 oz. (35 g)
Power
+5V ±5%, @220mA
Power Consumption
Sleep Mode: 400mW (80 mA)
Operating Mode: 750mW (150 mA)
Cable and Connector
one 15-pin detachable connector (to PC card)
and one RJ-11 plug for modem PSTN
connection
Modem Characteristics
V.34bis 33600bps, V.34 28800bps, V.32bis
14400bps
V.42 bis & MNP 2-5 data compression and error
correction
AT command set
ETC (Enhanced Throughput Cellular) protocol
for mobile cellular connections
Fax Group 3, V.17 14400bps and V.29 9600bps
Fax Service Class 1 and Class 2 compliant

8
MT3400ZLX Owner’s Manual
Features
• Compatible with most notebook, laptop and
portable computers
• Compatible with Card and Socket Services
• Easy to install and use
• Card is hot swappable
• Supports popular Fax/Modem communication
programs
• Multifunction CIS
• Concurrent, Low Power, and Sleep modes
• Auto-Sync protocol support
• POST and Loopback Tests
• Pulse/Tone and Adaptive Dialing
System Requirements
• An IBM compatible PC or notebook computer
with 386SX or faster processor
• At least one type II PCMCIA socket
• PCMCIA release 2.1 compliant Card Services
and Socket Services
• an RJ11 jack for connecting to a phone
receptacle
• Data and/or Fax communications software
Ship Kit Contents
Your MT3400ZLX is shipped from the factory with
the following:
• an MT3400ZLX PCMCIA Fax/Modem Card
• Phone cord with RJ-11 plug
• User’s Manual (this manual)
• Fax/Modem communications software disk
• One .INF file disk for Windows 95 and Windows
NT 4.x.

9
2 - Installation Quick Start
Chapter 2 - Installation Quick Start
Introduction
This chapter describes how to install your
MT3400ZLX and quick start in Windows 95 and
WindowsNT environment. Proceed to the section
that covers your computer’s operating system.
Safety Warnings
1. Never install telephone wiring during a lightning
storm.
2. Never install telephone jacks in wet locations
unless the jack is specifically designed for wet
locations.
3. This product is to be used with UL and CUL
listed computers.
4. Never touch uninsulated telephone wires or
terminals unless the telephone line has been
disconnected at the network interface.
5. Use caution when installing or modifying
telephone lines.
6. Avoid using a telephone (other than a cordless
type) during an electrical storm. There may be
a remote risk of electrical shock from lightning.
7. Do not use the telephone to report a gas leak in
the vicinity of the leak.

10
MT3400ZLX Owner’s Manual
Installing The MT3400ZLX Card
1. Insert the MT3400ZLX into the computer’s
PCMCIA slot with the 68-pin connector facing
the PCMCIA slot and the label facing up and
slide the card into the slot.
2. Plug the 15 pin connector with the RJ-11
telephone cable into the 15 pin socket of the PC
card; hardware installation is now complete.
3. Connect the MT3400ZLX to the telephone
system using the RJ-11 (6-pin) plug.
Figure 2-1. PC Card Installation