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

11
2 - Installation Quick Start
Working With Windows 95
Using Standard Modem Type (for 28.8K model) - No
diskette is needed in this installation.
1. Choose Select from a list of alternate drivers
in the New Hardware Found dialog box.
2. Select Standard Modem Types and Standard
28800 bps Modem in Select Device dialog
box.
3. Click OK button.
4. Connect the MT3400ZLX interface cable and
connect the RJ-11 plug to the telephone line
outlet.
5. Restart Windows 95; your MT3400ZLX is now
ready to go.
* Insert your MT3400ZLX before running any
communication program.
Figure 2-2. Windows 95 “Add New
Hardware” Illustration

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MT3400ZLX Owner’s Manual
Using the .INF File in the Bundled Diskette
1. Turn on your computer.
2. Insert the MT3400ZLX card into a free PCMCIA
slot, and make sure if it is firmly seated.
Windows 95 displays the New Hardware
Found dialog box.
3. In New Hardware Found dialog box, select
Driver from disk provided by hardware
manufacturer , and click OK.
4. Enter the path A:\ , and insert the MT3400ZLX
.INF file disk. Windows 95 will install the modem
.INF file automatically.
5. Connect the MT3400ZLX interface cable and
connect the RJ-11 plug to the telephone line
outlet.
6. Restart Windows 95; your MT3400ZLX is now
ready to go.
* Insert your MT3400ZLX before running any
communication program.
Figure 2-3. Windows 95 MT3400ZLX
.INF file Installation

13
2 - Installation Quick Start
Installing under Windows NT 4.0
There are also two ways to install the PCMCIA
modem for Windows NT 4.0: using the Standard
Modem Type, and using the .INF file in the bundled
diskette.
Using the Standard Modem Type (for 28,800
model)
No .INF file is needed with this method. Proceed as
follows:
1. Make sure the MT3400ZLX card is plugged into
the PCMCIA slot.
2. Run Windows NT 4.0.
3. Double click the Modem icon in Control Panel.
4. Enter Install New Modem and press Next
button to detect the modem automatically.
5. After detection, the Standard modem item
appears.
6. Select Standard modem item and press Next
button.
7. Press Finish button.

14
MT3400ZLX Owner’s Manual
Using the .INF File in the Bundled Diskette
The MODEMNT.INF make you more easy to identify
what card is used in your Windows NT 4.0 system.
Proceed as follows:
1. Make sure the PCMCIA card is plugged into the
PCMCIA slot.
2. Run Windows NT 4.0.
3. Double click the Modem Icon in Control Panel.
4. In Install New Modem window, press Next
button to detect the modem automatically.
5. Press Change button to change the modem
type.
6. Press Have Disk... button.
7. Insert the .INF file disk (bundled with the
MT3400ZLX) into the floppy drive.
8. Enter the path (e.g., A:\) and press OK button.
9. Press OK to install the modem.
10. Press the Finish button.

15
3 - AT Commands, S-Registers and Result Codes
Chapter 3 - AT Commands, S-Registers
and Result Codes
Introduction
This chapter describes how to use MT3400ZLX AT
commands, S-Registers and Result Codes.
How To Use AT Commands
Usually, your fax and data comm software controls
the modem for you. However, you may also want to
use the AT commands. These commands give you
complete control over your modem. You need to be
careful when using these commands, because they
can cause your software to loose its ability to control
the modem. If you do find that an AT command has
caused a problem, then turn the computer off and
then back on. That will reset most AT commands to
the factory default settings. You can also type
AT&F&WZ to go back to the factory default setting.
To use an AT command, you must first:
1. Run your communication software.
2. Configure the software for the appropriate COM
port and
IRQ settings, if necessary.
3. Enter Terminal mode (also i.e., “Command
mode”, “Local mode”, or “Direct mode”). This is
the mode in which most data comm software
packages start up. You can then type the
desired AT command, then press the Enter key.

16
MT3400ZLX Owner’s Manual
For example, type:
ATH0<Enter> to hang up the modem
connection, or
AT&K3<Enter> to enable bi-directional CTS/
RTS hardware flow control.
Most of the AT commands can be entered in
“strings” (i.e., on the same command line) without
spaces between the individual commands. For
example:
AT&K3H0<Enter>
As shown above, it is not necessary to put spaces
between the commands. So, there are no spaces
between AT , &K3 , and H0 .
The modem usually returns a response (or “Result
Code”) at the next line if it understands the
command. The response is usually OK or ERROR
unless the AT command provides other (extended)
messages.
Basic AT Commands
Command OptionsFunction & Description
A/ Re-execute the last command string
<any key> Terminate the current connection
attempt when entered in handshaking
state
All the following commands require an “AT” prefix
A Go off-hook and attempt to establish a
connection without waiting for a ring
Bn Line modulation options
B0 Select ITU-T V.22 mode for 1200 bps
connection and V.21mode for 300 bps

17
3 - AT Commands, S-Registers and Result Codes
Command OptionsFunction & Description
B1 Select Bell 212A for 1200 bps
connection and Bell 103 for 300 bps
B2 Deselect s V.23 reverse channel
B3 Same as B2
B16 * Selects V.21 when the modem is at
300 bps.
Selects Bell 103J when the modem is
at 300 bps.
Dn Dial command, beginning the dialing
sequence. The string “n” (telephone
number and modifiers) listed as
follows is entered after the “D”
command
P Pulse dial. Only digits 0 to 9 can be
dialed
R Reverse dial. Originate call in answer
mode (go on-line in answer mode)
Sn Dial the phone number stored in
NVRAM at location “n” (n=0, 1, 2, 3)
T DTMF tone dial. Any digit 0 to 9, *, #,
A, B, C… may be dialed as a tone
W Wait for second dial tone. The modem
waits for the second dial tone before
processing the dial string
, Pause. Cause the modem to pause for
a time before processing the dial
string (designed by S8 register)
! Flash hook (for call transfer). Cause
the modem to go on-hook for 0.5
second then return off-hook
@ Wait for 5 seconds of silence after
dialing number
; Return to command state after dialing
a number without disconnecting the
call
En AT command echo options
* Factory default setting

18
MT3400ZLX Owner’s Manual
Command OptionsFunction & Description
E0 Echo disabled
E1* Echo enabled
Hn Switch-hook control
H0 Modem goes on-hook
H1 Modem goes off-hook
Mn Speaker control
M0 Speaker always off
M1 * Speaker on until carrier present
M2 Speaker always on
M3 Speaker off during dialing and on until
carrier present
Nn Select negotiate handshake
N0 When originating or answering,
handshake only at the communication
rate specified by S37 register and
“ATBn” and no fallback
N1 * When originating or answering, start
handshaking only at the
communication standard specified by
S37 register and “ATBn” During
handshake, fallback to a lower speed
may occur except in “AT\N1” mode
On Go on-line
O0 Return modem to a previously
established state
O1 Begin an equalizer retrain sequence,
then return to on-line state
O3 to O14 Force modem to a new rate that is
user defined. New rates are defined in
S62 register
P Enable pulse dialing
Qn Result code display options
Q0 * Result code enabled
Q1 Result code disabled
* Factory default setting

19
3 - AT Commands, S-Registers and Result Codes
Command OptionsFunction & Description
T Enable tone dialing
Vn Result code form
V0 Display result code in numeric form
(see also the result code options table)
V1 * Display result code in verbose form
Wn Select extended result codes
W0 * CONNECT result code reports DTE
speed (see also the “Result Code
Options Table”)
W1 CONNECT result code reports DTE
speed; enable the CARRIER,
COMPRESSION, and PROTOCOL
extended result code
W2 CONNECT result code reports DCE
speed
Xn Select result codes/call progress
options
X0 Display CONNECT or “1” for all
speeds
X1 Display connect message according to
“ATW” and “AT\V”, blind dial, ignore
busy tone
X2 Display connect message according to
“ATW” and “AT\V”, wait for dial tone,
ignore busy tone
X3 Display connect message according to
“ATW” and “AT\V”, blind dial, check
busy tone after dialing
X4 * Display connect message according to
“ATW” and “AT\V”, wait for dial tone,
check busy tone after dialing
Zn Recall stored profile
Z0 Reset and recall user profile 0
Z1 Reset and recall user profile 1
* Factory default setting

20
MT3400ZLX Owner’s Manual
AT& (Ampersand) Commands
Command OptionsFunction & Description
&Bn Auto-retrain
&B1 * Retrain on a poor received signal.
Hang up if condition persists longer
than the threshold set in S7 register
&B2 Don’t hang up; do not retrain (tolerate
any line)
&Cn Data carrier detect option
&C0 State of carrier from remote modem is
ignored. RLSD (Receive Line Signal
Detect) circuit is always on
&C1 * State of carrier from remote modem is
tracked. RLSD circuit reflects the state
of carrier
&Dn Data Terminal Ready (DTR) option.
&D0 DTR ignored
&D1 Go to command mode on on-to-off
DTR transition
&D2 * Hang up and go to command mode on
on-to-off DTR transition. Auto-answer
is disabled if DTR is low
&D3 Hang up and reset from user profile 0
on on-to-off DTR transition
&F Recall factory default setting as active
configuration
&Gn Guard tone option
&G0 * No guard tone
&G1 550 Hz guard tone
&G2 1800 Hz guard tone
&Jn Dummy command for AutoSync
compatibility
&J0 Send OK to DTE
&Kn Set flow control
&K0 Disable flow control
* Factory default setting