Multitech MultiModem Cell MTCBA-E1 User manual

MultiModem®Cell
Wireless Modem
User Guide

Copyright and Technical Support
2 Multi-Tech Systems, Inc. MultiModem Cell User Guide
MultiModem® Cell User Guide
Wireless Modem
MTCBA-E1, MTCBA-E1-U, MTCBA-C1, MTCBA-C1-U, MTCBA-G2, MTCBA-G2-U
S000489B, 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 © 2010 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 for current versions of our product documentation.
Revision History
Revision Date Description
A07/14/10 Initial release.
B10/14/10 Updated operating temperatures, added weight, and added a
note for the DSR signal on pin6 of the serial connector.
Trademarks and Logos
The Multi-Tech logo and MultiModem 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.
Contacting Multi-Tech Support
In order to better serve our customers, manage support requests and shorten resolution times, we have created the online web
portal allowing you to submit questions regarding Multi-Tech products directly to our technical support team. Get answers to
your most complex questions, ranging from implementation, troubleshooting, product configuration, firmware upgrades and
much more.
To create an account and submit a Support Case on the Portal, visit https://support.multitech.com
Online Web Portal https://support.multitech.com
The Knowledge Base provides immediate answers to your questions and gives you access to support resolutions for all Multi-
Tech products. Visit our support area on the website for other support services.
Knowledge Base and Support Services www.multitech.com/support.go
World Headquarters
Multi-Tech Systems, Inc.
2205 Woodale Drive
Mounds View, Minnesota 55112
Phone: [phone] or 800-328-9717
Fax: [phone]
Technical Support
Business Hours: M-F, 9am to 5pm CST
Country By Email By Phone
Europe, Middle East, Africa: [e-mail] +(44) 118 959 7774
U.S., Canada, all others: [e-mail] [phone] or [phone]
Warranty
To read the warranty statement for your product, please visit: http://www.multitech.com/warranty.go

Table of Contents
Multi-Tech Systems, Inc. MultiModem Cell User Guide 3
Contents
Chapter 1 – Product Description and Specifications.....................................................5
Product Description .................................................................................................................................................. 5
Related Documentation............................................................................................................................................ 6
MultiModem MTCBA-E1 (EDGE).............................................................................................................................................6
MultiModem MTCBA-C1 (CDMA) ............................................................................................................................................6
MultiModem MTCBA-G2 (GPRS).............................................................................................................................................6
Safety........................................................................................................................................................................ 7
General Safety.........................................................................................................................................................................7
RF Interference Issues.............................................................................................................................................................7
Vehicle Safety..........................................................................................................................................................................7
Maintenance of the Wireless MultiModem ...............................................................................................................................7
Handling Precautions...............................................................................................................................................................7
Front Panel ............................................................................................................................................................... 8
LEDs........................................................................................................................................................................................8
Package Contents .................................................................................................................................................... 8
Specifications............................................................................................................................................................ 9
9-Pin Fem-D Sub Serial Connector........................................................................................................................ 10
4-Position DIP Switch ............................................................................................................................................. 10
Chapter 2 – Activation and Installation ...............................................................................11
Activate Your Wireless Account.............................................................................................................................. 11
Insert the SIM Card into Holder [if required]........................................................................................................... 11
Connect the Antenna, Serial or USB Cable, Power, Optional Power or Voice Cable............................................ 12
Optional Mounting................................................................................................................................................... 13
Flat Surface Mounting............................................................................................................................................................13
USB CDC-ACM Virtual COM Port Installation........................................................................................................ 14
Install Virtual COM Port..........................................................................................................................................................14
Install the Modem Driver........................................................................................................................................................15
Chapter 3 – Using Your Wireless Modem ............................................................................19
Phone Numbers for the Wireless Modem............................................................................................................... 19
Examples of Useful AT Commands........................................................................................................................ 19
Verifying Signal Strength........................................................................................................................................................19
Checking Network Registration and Roaming Status.............................................................................................................19
Checking the Modem’s Identity..............................................................................................................................................19
Connecting to the Internet ...................................................................................................................................... 20
Connecting to a CDMA Network for Internet Access..............................................................................................................20
Connecting to an EDGE Network for Internet Access............................................................................................................20
Create Your Dial-Up Connection in Windows Vista and XP...................................................................................................21
Generic Dial-Up Method - Non-Windows...............................................................................................................................22
Appendix A – Regulatory Compliance.................................................................................. 23
EMC, Safety, and R&TTE Directive Compliance....................................................................................................................23
International Modem Restrictions...........................................................................................................................................23
FCC Part 15 Class B Statement.............................................................................................................................................23
Industry Canada.....................................................................................................................................................................23
4BAppendix B - Cellular Information.........................................................................................24
Antenna System for Cellular Devices..................................................................................................................... 24
FCC Requirements for the Antenna ....................................................................................................................... 24
Antenna Specifications ........................................................................................................................................... 24
CDMA RF Specifications........................................................................................................................................................24
CDMA Antenna Requirements/Specifications........................................................................................................................24
GSM/EGSM RF Specifications...............................................................................................................................................24

Table of Contents
4 Multi-Tech Systems, Inc. MultiModem Cell User Guide
GSM Antenna Requirements/Specifications..........................................................................................................................25
PTCRB Requirements for the Antenna..................................................................................................................................25
Antennas Available from Multi-Tech Systems, Inc.................................................................................................................25
Appendix C – DC Power Cable....................................................................................................26
DC Power Cable Dimensions.................................................................................................................................................26
Appendix D – Environmental Information ...................................................................... 27
Waste Electrical and Electronic Equipment (WEEE) Statement ............................................................................................27
REACH Statement.................................................................................................................................................................27
Restriction of the Use of Hazardous Substances (RoHS)......................................................................................................28
C – RoHS...............................................................................................................................................................................29

Multi-Tech Systems, Inc. MultiModem Cell User Guide 5
Chapter 1 – Product Description and
Specifications
Product Description
The Multi-Tech MultiModem® Cell cellular modems are a ready-to-deploy, standalone modems that provide wireless data
communication and integrate seamlessly with virtually any application. The MultiModem Cell cellular modem is based on
industry-standard open interface and utilizes Multi-Tech’s Universal Socket design. The Cell modem is designed with either a
quad-band GSM/GPRS network or dual-band CDMA2000 1xRTT network and a broad range of interface options including
RS232, RS422, or a USB interface. All MultiModem Cells can be desktop or panel mounted.
Model Description
MTCBA-E1 Quad-band E-GPRS Class 12 performance and either RS232 serial interface or RS422 serial
interface
MTCBA-E1-U Quad-band E-GPRS Class 12 performance and USB connectivity
MTCBA-C1 Multi-band CDMA2000 1xRTT performance and either RS232 serial interface or RS422 serial
interface
MTCBA-C1-U Multi-band CDMA2000 1xRTT performance and USB connectivity
MTCBA-G2 Quad-band GPRS Class 10 performance and either RS232 serial interface or RS422 serial
interface
MTCBA-G2-U Quad-band GPRS Class 10 performance and USB connectivity

Chapter 1 – Product Description and Specifications
6 Multi-Tech Systems, Inc. MultiModem Cell User Guide
Related Documentation
MultiModem MTCBA-E1 (EDGE)
The MultiModem EDGE wireless modem delivers some of the fastest cellular wireless data speeds utilizing EDGE technology. It
allows users to connect to the Internet, send and receive data up to three times faster than possible with an ordinary
GSM/GPRS network making it ideal for highly data-intensive multimedia applications.
AT Commands: The MultiModem MTCBA-E1 wireless modem is configured using the EDGE AT
Commands. These commands are documented in the Reference Guide for the MultiModem Wireless EDGE
Modems, document number S000474x.
MultiModem MTCBA-C1 (CDMA)
The MultiModemCDMA wireless modem offers standards-based multi-band CDMA200 1xRTT performance. The ready-to-
deploy, standalone modem allows developers to add wireless communication to products with a miniumum of development time
and expense. The MultiModem CDMA wireless modem is base on industry-standard open interfaces and can be desktop or
panel mounted.
AT Commands: The MultiModem MTCBA-C1 wireless modem is configured using the CDMA AT
Commands. These commands are documented in the Reference Guide for the MultiModem Wireless CDMA
Modems, document number S000478x.
MultiModem MTCBA-G2 (GPRS)
The MultiModem MTCBA-G2 wireless modem offers standards-based quad-band GPRS Class 10 performance. It allows users
to connect to the Internet and send and receive data faster than possible with an ordinary GSM/GPRS network. Based on
industry-standard open interfaces, the MultiModem MTCBA-G2 wireless modem is equipped with quad-band, high-speed
RS232 technology, which means it can be used worldwide on all existing GSM networks.
AT Commands: The MultiModem MTCBA-G2 wireless modem is configured using the GPRS AT
Commands. These commands are documented in the Reference Guide for the MultiModem Wireless
GPRS Modems, document number S000463x.

Chapter 1 – Product Description and Specifications
Multi-Tech Systems, Inc. MultiModem Cell User Guide 7
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) 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 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 MultiModem when around gasoline or diesel-fuel pumps and before filling your vehicle with fuel.
●Switch OFF your 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 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 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 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 the Wireless MultiModem
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 MultiModem to any extreme environment where the temperature or humidity is high.
●Do not attempt to disassemble the MultiModem. There are no user serviceable parts inside.
●Do not expose the MultiModem to water, rain, or spilled beverages. It is not waterproof.
●Do not abuse your MultiModem by dropping, knocking, or violently shaking it. Rough handling can damage it.
●Do not place the MultiModem alongside computer discs, credit or travel cards, or other magnetic media. The
information contained on discs or cards may be affected by the phone.
●The use of accessories not authorized by Multi-Tech or not compliant with Multi-Tech’s accessory specifications may
invalidate the warranty of the MultiModem.
●In the unlikely event of a fault in the MultiModem, contact Multi-Tech Technical Support.
Handling Precautions
All devices must be handled with certain precautions to avoid damage due to the accumulation of static charge. Although input
protection circuitry has been incorporated into the devices to minimize the effect of this static build up, proper precautions should
be taken to avoid exposure to electrostatic discharge during handling and mounting.

Chapter 1 – Product Description and Specifications
8 Multi-Tech Systems, Inc. MultiModem Cell User Guide
Front Panel
The front panel is designed with LEDs that display modem activity. The LEDs display modem activity, such as transmit and
receive data, carrier detection, link status, terminal ready indicating connection to the pc, and the power indicator. The SIM door
on the right side of the modem provides access to the SIM card holder for those configurations.
MTCBA-E1/-U, MTCBA-G2/-U
MTCBA-C1/-U
LEDs
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.
TR Terminal Ready: Lit when modem is transmitting data.
LS Link Status Dependent on Model
-E1 version* (AT^SSYNC=1) -G2 version -C1 version
Permanently off. ME is in one of the
following modes: Power Down mode,
Airplane mode Non-Cyclic Sleep mode
with no temporary wake-up event in
progress.
600 ms on/600 ms off
Limited Network Service: No SIM card
inserted or no PIN entered, or network
search in progress or ongoing user
authentication, or network login in
progress.
75 ms on/3 sec off
Idle mode: The mobile is registered to the
GSM network (monitoring control
channels and user interactions). No call
is in progress.
75 ms on/ 75 ms off/75 ms on/3 sec off
One or more GPRS contexts activated.
500 ms on/ 25 ms off
Packet switched data transfer in
progress.
Permanently on
CSD call – Connected to remote party.
Continuous “on” state
indicates that the wireless
modem is not registered on the
network.
Flashing states:
200 ms on / 2 sec off
Indicates registration on
network.
200 ms on / 600 ms off
Indicates it is registered on a
network and communication is
in progress.
Off state. Modem is off (not
ready) or in download mode.
Continuous “on” state
indicates that the
wireless modem is not
registered on the
network.
Flashing states:
200 ms on / 2 sec off
Indicates registration on
network.
200 ms on / 600 ms off
Indicates it is registered
on a network and
communication is in
progress.
Off state. Modem is off
(not ready) or in
download mode.
PWR Power: Indicates presence of DC power when lit.
Note: The Link Status (LS) LED requires an AT^SSYNC=1 command on power up or Reset in order the LED to perform as
in the above table. For other EDGE AT commands, refer to the EDGE (E1) AT Command Reference Guide on your CD.
Package Contents
Note: Your wireless provider will supply the SIM card (not needed for –C1 versions).
Unbundled Package
with No Accessories Bundled Package With Accessories
1 modem
1 MultiModem CD
Note: You must supply mounting screws, AC or DC power
supply, and an antenna.
1 modem 1 antenna 1 MultiModem CD
1 RS232 or USB cable 1 power supply with serial versions
Note: You must supply mounting screws.

Chapter 1 – Product Description and Specifications
Multi-Tech Systems, Inc. MultiModem Cell User Guide 9
Specifications
Features
MTCBA-E1/-U MTCBA-C1/-U MTCBA-G2/-U
Performance EDGE: E-GPRS Class 12,
GPRS: Class 10
CDMA2000 1xRTT GPRS; Class 10
Band, Frequency Quad-band GSM/GPRS/EDGE
850/900/1800/1900MHz Dual-band 800/1900 MHz CDMA; 800 MHz and 800/1900 MHz Quad-band, GSM/GPRS, 850/900/1800/1900 MHz,
Packet Data
EDGE: E-GPRS Up to 240K bps,
coding scheme MCS-9, mobile station
Class B, LLC layer, 4 time slots
GPRS: Full PBCCH support, coding
scheme 1-4, mobile station Class B
Up to 153.6K bps forward and
reverse
Up to 85.6K bps, coding schemes
CS1 to CS4
Circuit-Switched
Data
Up to 14.4K bps, non-transparent
IS-95A, IS 95B up to 14.4K bps
forward and reverse
GPRS up to 14.4K bps transparent
and non-transparent
Short Message
Services- SMS
Text & PDU, Point-to-Point (MO/MT), cell broadcast
Antenna Connector
RF Antenna: 50 ohm SMA (female connector)
SIM Connector
Standard 1.8 and 3V SIM receptacle - Standard 1.8 & 3V SIM receptacle
RS232 Connector
DE9 only on serial versions
USB Connector***
Type B only on USB versions
Power Connector
2.5mm miniature (screw-on) Serial only
Voltage
9V to 32 VDC Serial only, 5.0V USB input voltage supplied by USB connector
Serial Power* Sleep 0.028A, .26W@9V,0.018A, .36W @
20V,0.013A,0.042W @32V
Typical 0.086A, 0.80W @ 9V,0.045A, .90W
@20V;.032A, 1.02W@32V
Max 0.305A, 2.81W @ 9V,0.42A, 2.84W@
20V,.094A, 3.01W@ 32V
Peak.2.20A @9V,0.850A @ 20V, 0.520A
@32V
Sleep 0.030A,.28W@9V,.018A, 0.36W @
20V,0.013A,0.042W @32V
Typical 0.112A,.1.03W @9V,0.058A,1.16W
@20V;0.041A, 1.31W @32V
Max 0.287A, 2.63W @ 9V,0.171A, 3.42W @
20V,0.113A,3.62W@ 32V
Sleep 0.027A,0.25W @ 9V, 0.017A,
0.34W @ 20V, 0.013A,0.42W@32V
Typical 0.084A, 0.78W @9V, 0.045A,
0.90W@20V,.032A, 1.02W@32V
Max 0.178A,1.64W @ 9V, 0.086A,
1.72W @20V, 0.058A, 1.86W @ 32V
Peak 1.90A @ 9V, 0.840A @ 20V,
0.575A @32V
USB Power*** Sleep 0.035A, 0.181W
Typical 0.136A, 0.68W
Max 0.495A,2.38W
Peak 1.450A
Sleep 0.028A,0.141W
Typical 0.175A, 0.858W
Max 0.510A,2.326W
Sleep 0.070A,0.35W
Typical 0.133A, 0.66W
Max 0.250A,1.23W
Peak 1.000A
Physical Description
4.114” W x1.065”Hx2.350”D 0.4 lbs 12.5cmW x2.7cmH x 8.6cmD 0.175Kg
Operating
Temperature **
-35° to +75° C -40° to 85° C -40° to 85° C
Storage Temp
-40° to +85° C
Humidity
Relative humidity 20% to 90% noncondensing
Certifications EMC Compliance
FCC Part 15
EN55022
EN55024
Radio Compliance
FCC Part 22, 24
RSS132,133
EN301 489-1
EN301 489-7
EN301 511
AS/ACIF S042.1, S042.3
Safety: UL60950-1
cUL60950-1
IEC60950-1
Network: PTCRB
EMC Compliance
FCC Part 15
Radio Compliance
FCC Part 22, 24
RSS132,133
Safety: UL60950-1
cUL60950-1
IEC60950-1
Network: CDG 1&2
CE Mark, R&TTE
EMC Compliance:
FCC Part 5
EN55022,
EN55024
Radio Compliance
FCC Part 22, 24
RSS 132,133
EN 301 511
EN 301 489-1
EN 301 489-7
AS/ACIF S042.1, .3
Safety: UL60950-1
cUL 60950-1
EN 60950-1
AS/NZS 60950-1
Network:
PTCRB, GCF
*Multi-Tech Systems, Inc recommends that the customer incorporate a 10% buffer into their power source when
determining product load.
** UL Listed @ 40° C, limited by power supply. UL Certification does not apply or extend to an ambient above 40° C and
has not been evaluated by UL for ambient greater than 40° C.
“UL has evaluated this device for use in ordinary locations only. Installation in a vehicle or other outdoor locations has
not been evaluated by UL. UL Certification does not apply or extend to use in vehicles or outdoor applications or in
ambient above 40° C.”
*** The USB connector replaces the serial connector on the –U versions.

Chapter 1 – Product Description and Specifications
10 Multi-Tech Systems, Inc. MultiModem Cell User Guide
9-Pin Fem-D Sub Serial Connector
The following table explains the pin functions.
DE9 Pin Assignment
Female Connector
DE9
Pins
RS232 Signals
DCE
RS422 Full
Duplex Signals
Signal
Direction
Pin 1
Data Carrier Detected (DCD)
RxD-
Out
Pin 2
RXD
RxD+
Out
Pin 3
TXD
TxD+
In
Pin 4
Data Terminal Ready (DTR)
TxD-
In
Pin 5
Ground
Ground
N/A
Pin 6 Data Set Ready (DSR) Ready To Send -
(RTS-)
Out – RS232
In – RS422
Pin 7 Ready To Send (RTS)
Ready To Send +
(RTS+)
In
Pin 8 Clear To Send (CTS)
Clear To Send +
(CTS+)
Out
Pin 9 Ring Indicator (RI)
Clear To Send -
(CTS-)
Out
Note: The DSR signal on pin 6 is always asserted by the modem.
4-Position DIP Switch
Switch Position
Up/On
Down/Off
Description
Position 1
Off
DTR Reset Disabled
Position 1
On
DTR Reset Enabled
Positions 2-4
Only valid for serial builds
Position 2
Off
No TXD Termination
Position 2
On
TXD Diff Pair Terminated
Position 3
Off
No RTS Termination
Position 3
On
RTS Diff Pair Terminated
Position 4
Off
RS232 Mode
Position 4
On
RS422 Mode
Note: Positions 2 and 3 should only be used in RS422 Mode. Enabling TXD/RTS termination may be required to avoid
errors at high bit rates or long cable lengths. Multi-Tech Systems tested the cable up to 1,000 feet , but the
maximum may be more with termination enabled and lower data rates.

Multi-Tech Systems, Inc. MultiModem Cell User Guide 11
Chapter 2 – Activation and Installation
Activate Your Wireless Account
Please refer to the wireless account Activation Notices included with your unit and 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 Holder [if required]
The MultiModem requires the power supply connection to begin operation. It also requires a SIM card (Subscriber Identity
Module) to operate on a GSM network. To install the SIM, do the following:
1. Using a small Phillips screwdriver, remove the two SIM door screws and remove the SIM door.
Note: When changing a SIM, ensure that power is removed from the unit.
2. Insert the SIM card into the card holder. The above graphic illustrates the correct SIM card orientation.
3. Verify that the SIM card fits into the holder properly and then replace the cover.

Chapter 2 – Activation and Installation
12 Multi-Tech Systems, Inc. MultiModem Cell User Guide
Connect the Antenna, Serial or USB Cable, Power, Optional
Power or Voice Cable
1. Connect a suitable antenna to the ANT connector on the right side of the unit (see antenna specifications in Chapter 1).
2. If you are connecting to a serial interface, connect a serial cable to the RS232 connector on the back of the unit and
connect the other end of the serial cable to the serial port on your PC.
If you are connecting to an USB interface, connect an USB cable to the USB connector on the back of the unit and the
other end to the USB port on your PC.
3. Set the 4-position DIP Switch on the back of the unit to the configuration of your unit.
Switch Position
Up/On
Down/Off
Description
Position 1
Off
DTR Reset Disabled
Position 1
On
DTR Reset Enabled
Positions 2-4
Only valid for serial builds
Position 2
Off
No TXD Terminiation
Position 2
On
TXD Diff Pair Terminated
Position 3
Off
No RTS Termination
Position 3
On
RTS Diff Pair Terminated
Position 4
Off
RS232 Mode
Position 4
On
RS422 Mode
Note: Positions 2 and 3 should only be used in RS422 Mode. Enabling TXD/RTS termination may be required
to avoid errors at high bit rates or long cable lengths. Multi-Tech Systems tested the cable up to 1,000 feet , but
the maximum may be more with termination enable and lower data rates.
4. If you are connecting a hand set to the unit for voice communication, connect an RJ11 cable from the hand set to the
VOICE connector on the back of the unit. To adjust the volume of the hand set, refer to the appropriate AT Command
Reference Guide on your product CD.
5. Depending on the power source, connect either the power supply module with the appropriate blade or the optional DC
power cable. If you are using the power supply module, remove the protective shipping cover. Attach the appropriate
interchangeable blade piece to the power supply module.
Screw-on the power lead from the power supply module to the power connection on the modem. Now, plug the
power supply into your power source.
For Optional Direct DC Power
●Screw-on the DC power cable to the power connector on the modem.
●Then attach the two wires at the other end of the DC power cable to a DC fuse/terminal block.
●Connect the red wire to the "+" (positive) terminal and the black wire to the "–" (negative) terminal. Be sure the
GND connection is correct.
Warning: Over-voltage protection is provided on the device. To ensure complete protection, you may want to add
additional filtering to the DC input.
Note: For automotive application: according to the type of application, you can use permanent “+” or key-switched
“+” source. Connect the power supply to its source (for example, in a mobile situation, to the vehicle’s DC
fuse/terminal block).

Chapter 2 – Activation and Installation
Multi-Tech Systems, Inc. MultiModem Cell User Guide 13
Optional Mounting
The Cell can be panel mounted with screws spaced according to the measurement shown.
Flat Surface Mounting
The Cell can be panel mounted with screws spaced according to the measurements showing.
Note: Use either #4 or #6 pan head screws for all four mount locations.

Chapter 2 – Activation and Installation
14 Multi-Tech Systems, Inc. MultiModem Cell User Guide
USB CDC-ACM Virtual COM Port Installation
Windows XP (SP3 or greater), VISTA, 2003 Server, Windows 7 (32-bit or 64-bit), Linux (Kernel 2.6.xx using CDC-ACM module)
are supported.
For Linux, a 2.6.28 kernel or greater is required. The standard CDC-ACM driver will work.
Note: Certain levels of Windows have an issue with their CDC-ACM driver (Usbser.sys). If you are having connection problems
(file download, web pages not loading) your version of Usbser.sys must be updated. Microsoft article 925681 documents this
issue and provides a fix.
After installing the virtual com port, the correct modem driver may be installed to the com port (for the USB versions, make sure
the USB port of the Cell is connected with a SIM card before the modem driver is installed).
Install Virtual COM Port
Your product CD contains an installer program for current Windows operating systems (Windows XP and newer only) . For
Windows, run the automatic installer from your product CD or run install.bat from the VCOM_autoinstall directory on your
product CD.
1. For USB versions of the Cell, ensure that the USB cable is connected to your PC.
2. For GSM versions of the Cell, ensure that the SIM card is installed prior to powering up.
3. If any Windows Install Wizard pops up, close or cancel the wizard.
4. Insert the product CD into a compatible drive.
5. Click on the Preinstall Windows Drivers button from the main splash screen of the CD.
6. Windows may pop-up a User Account Control window. Select the YES button to continue with the driver installation.
7. Click on the next button to start the driver pre-installation.

Chapter 2 – Activation and Installation
Multi-Tech Systems, Inc. MultiModem Cell User Guide 15
8. There will be a transitory screen, then the process will complete. Click on the Finish button.
9. Next, continue with installing the modem driver.
Install the Modem Driver
1. Click on the Control Panel button from the main splash screen on the CD.
2. The Control Panel is displayed, double-click on Phone and Modem Options icon. Then click on the Modems tab.

Chapter 2 – Activation and Installation
16 Multi-Tech Systems, Inc. MultiModem Cell User Guide
3. When this Phone and Modem Options screen appears, click on the Add button.
4. On the Install New Modem screen, click Don’t detect my modem, I will select it from a list. Then click Next >.
5. On the Install New Modem screen, click the Have Disk button to browse for the driver file on the MultiModem CD.
Then click Next>.

Chapter 2 – Activation and Installation
Multi-Tech Systems, Inc. MultiModem Cell User Guide 17
6. Make sure that the MultiModem CD is inserted into your CD-ROM, browse to your MultiModem CD.
7. Select the MTSMCIP_MTCMRIP.INF file.
Then click OK.
8. In the Models window, scroll down the list of Models and select the model that is applicable to your modem.
Once you have selected your model, click on Next>.

Chapter 2 – Activation and Installation
18 Multi-Tech Systems, Inc. MultiModem Cell User Guide
9. You will now have to choose which com port the MultiModem is connected to.
If you know exactly which port your modem is on, click on that port; otherwise, go to Device Manager > Ports (COM &
LPT) to verify which port the MultiModem Cell MTCBA-X-U is installed on. Click Next >.
10. To finish the install, click on Finish.
You have now successfully installed the MultiModem driver to your PC.
Verifying That Your Modem Has Been Installed Successfully
1. After you have successfully installed the MultiModem driver as stated above, you should be brought back to the Phone
and Modems Options screen. Make sure that the modem is now listed under the columns Modem and Attached To
(the correct com port).
2. Highlight the modem and then click on Properties.
3. A Properties screen will open for the Multi-Tech modem. Click on the tab labeled Diagnostics.
4. In the middle of the screen, click on the Query Modem button. Windows will now try to query the Multi-Tech modem. If
this process passes, the second box on this screen will show the columns Command and Response.
Note: To make sure that the modem is correctly being queried, look at the LED lights of the modem after you click on
Query Modem. The TR light should come on and the TD and RD lights should flicker.
5. If this process passes, then the modem should be properly installed and ready for use. Click OK to close the modem
Properties window. Then click on OK to close the Phone and Modem Options window.

Multi-Tech Systems, Inc. MultiModem Cell User Guide 19
Chapter 3 – Using Your Wireless Modem
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.
Examples of Useful AT Commands
A Note About HyperTerminal
In order to verify signal strength and roaming status, you must use a terminal application such as HyperTerminal. To open this
program in Windows Vista or XP, go to Start > All Programs > Accessories > Communications > HyperTerminal. Other
Windows operating systems have similar paths to HyperTerminal. See your system’s online Help if you cannot find it.
A Note About AT Commands
AT commands can be used to operate, configure, and query your modem. AT commands for the MultiModem Cells are
published in separate Reference Guides included on the MultiModem CD and posted on the Multi-Tech web site.
The following two commands let you query signal strength and roaming status.
Verifying Signal Strength
Using HyperTerminal, type AT+CSQ
The modem responds with the received signal strength (rssi).
The modem responds with the received signal strength (rssi) and the channel bit error rate (ber).
RSSI ranges from 0 to 31.
Signal Strength Verification – RSSI
AT+CSQ xx Values
Signal Strength
0 - 10
Weak or Insufficient
11 - 20
Average
21 – 31
Exceptional
99
No signal
BER ranges from 0 to 7 (Seven is the highest error rate).
Checking Network Registration and Roaming Status
In this procedure, you will verify that the MultiModem has been registered on the wireless network. Using
HyperTerminal, type AT+CREG?
The modem will respond in one of the following ways:
Network Registration Verification
Value
Network Registration Status
0,0
The modem is not registered on any network
0,1
The modem is registered on the home network
0,5
The modem is registered on a network and it is roaming
Note: If the modem indicates that it is not registered, verify the signal strength to determine if the problem is the
strength of the received signal.
Checking the Modem’s Identity
Use the ATI command (Note: This command is illustrated using the capital letter I after AT)
●Type ATI0 (Note: The command ends in a zero)
The manufacturing data displays. For example: Wavecom Modem Multiband G850 1900
●Type ATI3
The software version displays. For example: 651_09gg...
●Type ATI6
Displays modem data features. For example: data rates, data modes, fax classes.

Chapter 3 – Using your Wireless Modem
20 Multi-Tech Systems, Inc. MultiModem Cell User Guide
Connecting to the Internet
Internet access can be setup in Windows Dial-Up Networking (DUN) of the computer that the MultiModem Cell is serving. For a
GPRS network, you have to create an Access Point Name in the Phone and Modem Options dialog in Windows Control Panel
and then create your Windows Dial-Up Connection (DUN).
Connecting to a CDMA Network for Internet Access
Once you have activated your wireless account, you can establish your Internet connection through a Windows dial-up session.
Setup procedures will vary according to the type of wireless service provider used.
Requirements
●One CDMA capable MultiModem Cell modem
●The modem must be getting a proper signal and be showing a network registration through the wireless provider’s
network
●A PC running Windows 7, Vista or XP with the Multi-Tech drivers installed for your particular model
The following instructions are for Windows Vista or XP. Every PC may have slight differences which may cause the instructions
to be different. Use these instructions as a guide to help you understand what is required to set up an Internet connection
through your wireless service provider for all operating systems.
Connecting to an EDGE/GPRS Network for Internet Access
After you have inserted the SIM card and all other setup steps are complete, you can establish an Internet connection through a
Windows dial-up session.
Requirements
●One EDGE capable MultiModem Cell modem
●The MultiModem Cell modem should have an EDGE capable network and an active SIM card
●The modem must be getting a proper signal and be showing a network registration through the wireless provider’s
network
●A PC running Windows 7, Vista or XP with the Multi-Tech drivers installed
The following instructions are for Windows 7, Vista and XP. Every PC may have slight differences which may cause the
instructions to be different. Use these instructions as a guide to help you understand what is required to set up an Internet
connection through your wireless service provider for all operating systems.
Set the Access Point Name (APN) into the Modem’s Properties on your PC
In order for your EDGE modem to connect to your provider’s network, you must tell the modem the APN to which it will
connect. The APN is a server name that your account is setup on with your provider. Your APN will be given to you by your
provider. Here are some well known APNs:
●AT&T; PROXY, or INTERNET, or PUBLIC
●T-Mobile: INTERNET2. VOICESTREAM.COM, or INTERNET3.VOICESTREAM.COM, or WAP.VOICESTREAM.COM
●Rogers AT&T of Canada: INTERNET.COM
Setting up an Access Point Name (APN)
●Click on the Start button and then Control Panel.
●In Control Panel, double-click on Phone and Modem Options.
●In the Phone and Modem Options screen, click on the Modems tab. Highlight your Cell modem listed in the table
and then click on Properties.
●A Properties window for your modem will display. For Windows Vista and later operating systems, click on the
Change Settings button.
●Click on the Advanced tab. You should see an Extra Settings box. In the Extra initialization commands text box,
enter:
AT+CGDCONT=1,”IP”,”<APN>”
For <APN>, enter in the correct APN for your account.
For example: AT+CGDCONT=1”IP”,”ISP.AT&T”
●Click OK to close the Properties window. Then click OK to close the Phone and Modems Options window.