Multitech MultiModem MTCBA-G-U-F4 User manual

MultiModem®GPRS
USB Wireless Modem
MTCBA-G-U-F4
User Guide

Copyright and Technical Support
Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide 2
MultiModem® GPRS
USB Wireless Modem
User Guide
Model MTCBA-G-U-F4
S000444B, Revision B
Copyright
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 © 2008 by Multi-Tech Systems, Inc.
Multi-Tech Systems, Inc. makes no representation 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. Check Multi-Tech’s Web site or product CD for current versions of our product documentation.
Revision History
Revision Date Description
A10/04/07
Initial Release
B 03/20/08 Added Vista Operating System support. Added section on changing the GPRS Band.
Trademarks and Logos
MultiModem, Multi-Tech and the Multi-Tech logo are registered trademarks of Multi-Tech Systems, Inc. Windows is a
registered trademark of Microsoft in the U.S. and other countries. Other trademarks and trade names mentioned in
this publication belong to their respective owners.
World Headquarters
Multi-Tech Systems, Inc.
2205 Woodale Drive
Mounds View, Minnesota 55112
[phone] or [phone]
Fax: [phone]
Internet Address: http://www.multitech.com
Technical Support
Country By Email By Phone
Europe, Middle East, Africa suppor[email protected] +(44) 118 959 7774
U.S., Canada, all others [e-mail] [phone] or +[phone]

Table of Contents
Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide 3
Contents
Chapter 1 – Product Description and Specifications................................................................................................4
Product Description..............................................................................................................................................4
Features.................................................................................................................................................................4
Safety.....................................................................................................................................................................5
General Safety.................................................................................................................................................5
RF Interference Issues.....................................................................................................................................5
Vehicle Safety..................................................................................................................................................5
Maintenance of Your Modem...........................................................................................................................5
Your Responsibility..........................................................................................................................................5
Package Contents.................................................................................................................................................6
General Specifications .........................................................................................................................................7
Functions – GSM/GPRS Modes...........................................................................................................................7
Electrical Specifications.......................................................................................................................................7
RF Specifications..................................................................................................................................................7
Antenna Specifications ........................................................................................................................................8
GSM/EGSM Antenna Requirements/Specifications.........................................................................................8
Antennas Available from Multi-Tech Systems, Inc...........................................................................................8
PTCRB Requirements Note.............................................................................................................................8
FCC Requirements Note..................................................................................................................................8
Interfaces...............................................................................................................................................................8
AT Command Reference Guides .........................................................................................................................8
Chapter 2 – Activation and Installation......................................................................................................................9
Activate Your Wireless Account..........................................................................................................................9
Insert the SIM Card into the Holder.....................................................................................................................9
Connect the Antenna and USB Cable ...............................................................................................................10
Handset Connection (Optional).........................................................................................................................10
Attach the Modem to a Flat Surface..................................................................................................................11
Install the Modem Driver ....................................................................................................................................12
Installing the Modem Driver in Windows Vista...............................................................................................13
Installing the Modem Driver in Windows XP/2003 .........................................................................................20
Installing the Modem Driver in Windows 2000...............................................................................................28
Chapter 3 – Using Your Wireless Modem ................................................................................................................36
Changing the GPRS Band..................................................................................................................................36
Phone Number for the Wireless Modem...........................................................................................................37
Examples of Useful AT Commands...................................................................................................................37
Verifying Signal Strength ...............................................................................................................................37
Checking Network Registration and Roaming Status.....................................................................................37
Checking the Modem’s Identity......................................................................................................................37
Establishing a Voice Call ...............................................................................................................................38
Establishing a Circuit-Switched Data (CSD) Connection ...............................................................................38
Answering a Circuit-Switched Data (CSD) Connection..................................................................................38
Using Short Message Services (SMS)...............................................................................................................39
SMS Examples ..............................................................................................................................................40
Internet Access ...................................................................................................................................................42
Connecting to the GPRS Network for Internet Access...................................................................................42
Chapter 4 – Troubleshooting and Frequently Asked Questions............................................................................44
Troubleshooting Examples................................................................................................................................44
Frequently Asked Questions .............................................................................................................................45
Appendix A – Warranty and Repairs ........................................................................................................................47
Appendix B - Waste Electrical and Electronic Equipment (WEEE) Statement .....................................................49
Appendix C – C-ROHS HT/TS Substance Concentration........................................................................................50
INDEX..........................................................................................................................................................................51

Chapter 1 – Product Description and Specifications
Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide 4
Chapter 1 – Product Description
and Specifications
Product Description
The Multi-Tech MultiModemGPRS is an external data/fax/voice wireless modem with a USB interface. It supports
mobile originated short message service (SMS) and mobile-terminated SMS. Designed for global use, it offers
standards-based quad-band GSM/GPRS Class 10 performance. This ready-to-deploy, standalone modem allows
developers to add wireless communication to products with a minimum of development time and expense. The
MultiModem GPRS is based on industry-standard open interfaces, is fully type approved, and can be desktop or
panel mounted.
A Note About Documentation:
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. Check Multi-Tech’s Web site for current versions of our product documentation.
Features
•GPRS Class 10 operation
•Quad-band 850/900/1800/1900 MHz
•GSM Class 1 and Class 2 Group 3 FAX
•Desktop or panel mounting
•Short Message Services including text and PDU, point-to-point, cell
broadcast
•14.4K GSM circuit switched data
•SMA antenna connector and SIM socket
•Serial interface supports DTE speeds to 115.2K
•AT command compatible
•MNP2 V.42bis data compression
•Numerous LEDs provide operational status
•ME + SIM phone book management
•Fixed dialing number
•SIM Toolkit Class 2
•SIM, network and service provider locks
•Real time clock
•Alarm management
•UCS2 character set management
•Packet data up to 85K bps
•Embedded TCP/IP stack

Chapter 1 – Product Description and Specifications
Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide 5
Safety
General Safety
The modem is designed for and intended to be used in fixed and mobile applications. “Fixed” means that the device is
physically secured at one location and is not able to be easily moved to another location. “Mobile” means that the
device is designed to be used in other than fixed locations.
Caution: Maintain a separation distance of at least 20 cm (8 inches) is normally maintained
between the transmitter’s antenna and the body of the user or nearby persons. The Modem
is not designed for or intended to be used in portable applications within 20 cm. (8 inches) of
the body of the user.
RF Interference Issues
It is important to follow any special regulations regarding the use of radio equipment due in particular to the possibility
of radio frequency, RF, interference. Please follow the safety advice given below carefully.
•Switch OFF your Wireless MultiModem when in an aircraft. The use of cellular telephones in an aircraft may
endanger the operation of the aircraft, disrupt the cellular network and is illegal. Failure to observe this
instruction may lead to suspension or denial of cellular telephone services to the offender, or legal action or
both.
•Switch OFF your Wireless MultiModem when around gasoline or diesel-fuel pumps and before filling your
vehicle with fuel.
•Switch OFF your Wireless MultiModem in hospitals and any other place where medical equipment may be in
use.
•Respect restrictions on the use of radio equipment in fuel depots, chemical plants or where blasting operations
are in progress.
•There may be a hazard associated with the operation of your Wireless MultiModem close to inadequately
protected personal medical devices such as hearing aids and pacemakers. Consult the manufacturers of the
medical device to determine if it is adequately protected.
•Operation of your Wireless MultiModem close to other electronic equipment may also cause interference if the
equipment is inadequately protected. Observe any warning signs and manufacturers’ recommendations.
Vehicle Safety
•Do not use your MultiModem while driving.
•Respect national regulations on the use of cellular telephones in vehicles. Road safety always comes first.
•If incorrectly installed in a vehicle, the operation of Wireless MultiModem telephone could interfere with the
correct functioning of vehicle electronics. To avoid such problems, be sure that qualified personnel have
performed the installation. Verification of the protection of vehicle electronics should be part of the installation.
•The use of an alert device to operate a vehicle’s lights or horn on public roads is not permitted.
Maintenance of Your Modem
Your Wireless MultiModem is the product of advanced engineering, design and craftsmanship and should be treated
with care. The suggestions below will help you to enjoy this product for many years.
•Do not expose the Wireless MultiModem to any extreme environment where the temperature is above 50ºC or
humidity is above 90% noncondensing.
•Do not attempt to disassemble the Wireless MultiModem. There are no user serviceable parts inside.
•Do not expose the Wireless MultiModem to water, rain, or spilled beverages. It is not waterproof.
•Do not place the Wireless MultiModem alongside computer discs, credit or travel cards, or other magnetic
media. The phone may affect the information contained on discs or cards.
•The use of accessories not authorized by Multi-Tech or not compliant with Multi-Tech's accessory
specifications may invalidate the warranty of the Wireless MultiModem.
•In the unlikely event of a fault in the Wireless MultiModem, contact Multi-Tech Tech Support.
Your Responsibility
This Wireless MultiModem is your responsibility. Please treat it with care respecting all local regulations. It is not a
toy. Therefore, keep it in a safe place at all times and out of the reach of children.
Try to remember your Unlock and PIN codes. Become familiar with and use the security features to block
unauthorized use and theft.

Chapter 1 – Product Description and Specifications
Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide 6
Package Contents
Unbundled Package
Modem with No Accessories Bundled Package Modem with Accessories
1 modem
1 mounting bracket
1 Quick Start Guide
1 MultiModem CD
Note: You must supply a USB cable,
bracket screws, and an antenna.
1 modem
1 mounting bracket
1 USB cable
1 antenna
4 rubber feet
1 Quick Start Guide
1 MultiModem CD
Note: You must supply bracket
screws.
Part to be Supplied by Your Wireless Service Provider
Subscriber Identity Module (SIM) configuration chip. The SIM contains information specific to your wireless account
and its features.

Chapter 1 – Product Description and Specifications
Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide 7
General Specifications
General Specifications
Mechanical Dimensions & Weight 4.3" L x 2.4" W x 0.94" H; 4.2 oz.
(11 cm x 6.1 cm x 2.4 cm; 119 g)
Connectors & Fasteners Antenna Connection type: SMA jack
Interface Connector: USB Type B
Phone Handset: Modular handset jack
SIM receptacle: Standard 3V SIM receptacle
Operating Temperatures -40° to +85°C
Storage Temperatures -40° to +85°C
Humidity Relative humidity 20% to 90% noncondensing
Certifications and Safety CE Mark, R&TTE
EMC: FCC Part 2, 15, 22, 24, EN 55022 & EN 55024
Safety: cUL, UL 60950, EN 60950
Network: PTCRB
Functions – GSM/GPRS Modes
Mode Description
Standard Quad Band 850/900/1800/1900 MHz
Interface USB interface. USB Type B.
SMS Mobile Originated (MO) and Mobile Terminated (MT) SMS Mode Text & PDU point to point. Cell
broadcast in accordance with GSM 07.05.
Data Data circuit asynchronous, transparent, non-transparent up to 14,400 bits
Fax Class 1 and Class 2 Group 3 compatible.
GPRS Class 10. Coding schemes: CS1 to CS4.
Electrical Specifications
Electrical Characteristics
Switching on/off The device is permanently powered when connected to the USB port.
Voltage Voltage Range: 5 to 32V DC
GND: 0V
Current Requirements
GSM/GPRS 850/900 GSM/GPRS 1800/1900
Parameters Typ. Typ. Unit
Input average supply current in comm. mode at Pmax 360 300 mA
Input average supply current in idle mode 30 30 mA
RF Specifications
GSM 850 EGSM 900 GSM 1800 GSM 1900
Frequency RX 869 to 894 MHz 925 to 960 MHz 1805 to 1800 MHz 1930 to 1990 MHz
Frequency TX 824 to 849 MHz 880 to 915 MHz 1710 to 1785 MHz 1850 to 1910 MHz
RF Power Stand 2W at 12.5% duty
cycle 2W at 12.5% duty cycle 1W at 12.5% duty cycle 1W at 12.5% duty cycle

Chapter 1 – Product Description and Specifications
Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide 8
Antenna Specifications
GSM/EGSM Antenna Requirements/Specifications
Frequency Range: 824 – 960 MHz / 1710 – 1990 MHz
Impedance: 50 Ohms
VSWR: <2.0:1
Typical Radiated Gain: 3 dBi on azimuth plane
Radiation: Omni
Polarization: Vertical
Wave: Half Wave Dipole
Antennas Available from Multi-Tech Systems, Inc.
Description Part Number
Hinged Right Angle 900/1800 MHz Cellular Modem Antenna ANF1-1HRA
Hinged Right Angle 800/1900 MHz Cellular Modem Antenna ANF2-1HRA
Hinged Right Angle 850/900/1800/1900 MHz Cellular Modem AntennaANQB-1HRA
PTCRB Requirements Note
There cannot be any alteration to the authorized antenna system. The antenna system must be the same type
with similar in-band and out-of-ban radiation patterns and maintain the same specifications.
FCC Requirements Note
The antenna gain, including cable loss, must not exceed 3.0 dBi at 1900 MHz / 1.6 dBi at 850 MHz for mobile
operating configurations and 7.0 dBi at 1900 MHz / 2.3 dBi at 850 MHz for fixed mounted operations, as defined
in 2.1091 and 1.1307 of the rules for satisfying RF exposure compliance.
Interfaces
The Wireless MultiModem has several interfaces:
•LED function indicating operating status
•External antenna (via SMA connector)
•Serial and control link (via USB connector)
•Microphone and speaker (via handset jack)
•SIM card holder
LED Interface LED Indicators
TD Transmit Data. Lit when modem is transmitting data.
RD Receive Data. Lit when modem is receiving data.
CD Carrier Detect. Lit when data connection has been established.
LS Line Status.
Continuous “on” state indicates that the wireless modem is not registered on the network.
Flashing state indicates registration on network.
Off state. Modem is off (not ready) or in download mode.
TR Terminal Ready. Commonly called “Data Terminal Ready.” This is a readiness signal from the PC.
PWR Power. Indicates presence of DC power when lit.
AT Command Reference Guides
AT commands for the GPRS USB wireless modem are published in a separate GPRS AT Commands Reference
Guide included on the MultiModem CD and posted on the Multi-Tech web site.

Chapter 2 – Activation and Installation
Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide 9
Chapter 2 – Activation and
Installation
Activate Your Wireless Account
Please see the wireless account Activation Notices located on the MultiModem CD. Choose the one for your
wireless network provider and follow the directions to activate your account.
Phone Numbers for the Wireless Modem
Every wireless modem will have its own unique phone number. The phone number may simply be given to you by
your wireless service provider or it may be on the SIM card or both. Wireless provider implementations may vary.
Insert the SIM Card into the Holder
The wireless MultiModem requires a SIM card (Subscriber Identity Module) to operate on a GSM network. To install
the card, do the following:
1. Using your fingernail or a small wedging tool (e.g., a small screwdriver), pry off the SIM cover.
2. Insert the SIM card into the holder.
3. Verify that the SIM card fits into the holder properly and then replace the cover.

Chapter 2 – Activation and Installation
Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide 10
Connect the Antenna and USB Cable
•Antenna. Connect a suitable antenna to the SMA connector (See antenna specifications in Chapter 1).
•USB Cable. Connect the Series B end of the USB cable to the modem and the other end to the PC.
,
Handset Connection (Optional)
If you intend to use a phone handset, connect it to the MultiModem now.

Chapter 2 – Activation and Installation
Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide 11
Attach the Modem to a Flat Surface
This is an optional step.
To mount the Wireless MultiModem, do the following:
1. Obtain mounting screws (two are needed) that are appropriate for the surface on which you will mount
the MultiModem. For example, one might use two 6-32 self-tapping screws 5/8” in length to mount the
unit in a truck to the wall of the cab behind the passenger’s seat.
2. Typically, the unit is mounted against a flat surface into which holes can be drilled. The mounting holes
(center-to-center) must be separated by 125mm or 4 -15/16 inches.
Drill the mounting holes at the desired mounting location (if applicable).
3. Slide the mounting brackets into the corresponding slots on the backside of the MultiModem chassis.
4. Attach the MultiModem with two screws to the mounting surface at the desired location on the
equipment.

Chapter 2 – Activation and Installation
Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide 12
Install the Modem Driver
Introduction
Compatibility: This wireless MultiModem is compatible with Windows Operating Systems Vista/XP/2003/2000
and Linux.
Windows Drivers: The wireless MultiModem USB driver must be installed in your computer’s program directory.
The Windows USB drivers are located on the MultiModem CD in the Drivers I Windows Drivers folder. A
complete set of drivers for each operating system is organized into Vista and XP with either 32-bit or 64-bit
processor. Most users will select either the 32-bit Vista or 32-bit XP drivers (Windows 2003 also use the XP
drivers). Windows 2000 users must select the drivers from the Drivers I Windows_2000 directory. For 64-bit
operating systems, go to Start I All Programs I Accessories I System Tools I Computer and click on the
System Properties button. Under System you will see System Type: 64-bit Operating System.
When installing the 64-bit version of the Vista driver, a person will have to disable the “signed” driver check in
order to install it. Two methods are available, choose one:
•First Method
Boot your PC, press F8 and choose “Disable driver signature enforcement option”.
•Second Method
•Create a shortcut on the desktop to cmd.exe using the following steps:
•Right click on an empty space on the desktop to open the context menu
•Select New
•Select Shortcut with a left-click
•In the Location box type cmd /k
•Right-click on the shortcut and select Run as administrator
•When the command window opens, type or paste the following and press ENTER:
•Bcdedit /set loadoptions DDISABLE_INTEGRITY_CHECKS
•Reboot your PC and install the driver
Linux Drivers: Linux Operating System drivers are also located on the CD in the Drivers I Linux Folder. Refer
to the Readme file (also in the Linux directory) for the correct driver file and installation guide for your
distribution/version of Linux.
Overview of Windows Driver Installation: Three install wizards guide you through the software Installation in
this order: •Part A installs the USB Driver.
•Part B associates the PC port with the USB Driver, and finally
•Part C installs the modem driver.

Chapter 2 – Activation and Installation
Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide 13
Installing the Modem Driver in Windows Vista
Preliminaries
1. Power up your computer.
2. Windows will detect that the new modem is present.
Driver Installation of your TUSB3410 Serial Port
3. The Found New Hardware screen appears with Windows needs to install driver software for
your TUSB3410 Serial Port.
Click on Locate and install driver software (recommended). Windows will guide you
through the process of installing driver software for your device.
4. The next screen prompts you to insert the disc that came with your MultiModem. If you have the
disc that came with your device, insert it now. Then, click on I don’t have the disc. Show me
other options. Windows may prompt you to search online, but this is not necessary.

Chapter 2 – Activation and Installation
Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide 14
5. Choose Browse my computer for driver software (advanced).
6. At the Browse for driver software on your computer screen, click the Browse button.
7. Browse to the Drivers folder on your MultiModem CD, then select the Windows_Drivers folder
and then the Vista32 folder. If you were installing drivers on a Vista 64-bit Operating System,
you would browse to the Vista64 folder. Click OK, then Click Next.
8. Windows can’t verify the publisher of this driver software screen appears.
Select Install this driver software anyway.

Chapter 2 – Activation and Installation
Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide 15
9. Installing driver software… screen appears.
10. When the software for this device has been successfully installed screen appears with Windows
has finished installing the driver software for this device: GSM Device.
Click Close.

Chapter 2 – Activation and Installation
Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide 16
Installation of the Communications Port
11. The Found New Hardware – Texas Instrument UMP Serial Port 00 screen appears. If you
have the disc that came with your device, insert it now.
The MultiModem CD is still in the CD ROM drive. Click Next.
12. Searching disc for software screen appears.

Chapter 2 – Activation and Installation
Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide 17
13. Windows can’t verify the publisher of this driver software screen appears.
Select Install this driver software anyway.
14. Installing driver software progress screen appears.

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Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide 18
15. The software for this device has been successfully installed screen appears with Windows
has finished installing the driver software for this device: USB - Serial Port.
Click Close.
Installation of the Modem
16. The Found New Hardware – MultiTech GSM Modem screen appears. If you have the disc
that came with your device, insert it now.
The MultiModem CD is still in the CD ROM drive. Click Next.

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Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide 19
17. Windows can’t verify the publisher of this driver software screen appears.
Select Install this driver software anyway.
18. Installing driver software progress screen appears.
19. The software for this device has been successfully installed screen appears. Windows has
finished installing the driver software for this device: Multi-Tech Systems USB GSM_GPRS
Wireless Modem
19. Click Close. The installation of drivers is now complete.

Chapter 2 – Activation and Installation
Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide 20
Installing the Modem Driver in Windows XP/2003
This installation assumes a Windows XP or Windows 2003 operating system. Windows XP/2003 are identical in
the methods they use for installing modem drivers.
Part A for Windows XP/2003: Installing the USB Driver
1. Connect the USB cable between the MultiModem and the PC.
2. Insert the MultiModem CD into your CD-ROM drive. The CD uses the Autorun feature, and
after a brief delay, the MultiModem Setup – Welcome screen appears. Close the Welcome
screen.
In some situations the operating system will display a Found New Hardware Wizard screen and
asks you: Can Windows connect to Windows Update to search for software?
Select No, not this time. Then click Next.
3. The Found New Hardware Wizard screen now displays the GSM Device. This is the first of
three New Hardware Wizards that will appear.
4. Click on Install from a list or specific location (Advanced), and then click Next..