Multitech MultiModem Cell MTCBA-E1 User manual

®
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
S000489D, Revision D
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 © 2012 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
A
07/14/10
Initial release.
B
10/14/10
Updated operating temperatures, added weight, and added a note for the DSR signal on pin6 of the serial
connector.
C
09/21/11
Removed references to product CD.
D
12/12/12
Added pacemaker statement, updated RoHS and other regulatory statements.
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:
[email protected]
+(44) 118 959 7774
U.S., Canada, all others:
[email protected]
[phone] or [phone]
Warranty
To read the warranty statement for your product, please visit: http://www.multitech.com/warranty.go

Contents
Multi-Tech Systems, Inc. MultiModem Cell User Guide 3
Chapter 1 –Product Description and Specifications...........................................................................................5
Product Description ........................................................................................................................................................ 5
Related Documentation .................................................................................................................................................. 5
MultiModem MTCBA-E1 (EDGE)...................................................................................................................................... 5
MultiModem MTCBA-C1 (CDMA) .................................................................................................................................... 6
MultiModem MTCBA-G2 (GPRS)...................................................................................................................................... 6
Safety.............................................................................................................................................................................. 6
General Safety.................................................................................................................................................................. 6
RF Interference Issues...................................................................................................................................................... 6
Interference with Pacemakers and Other Medical Devices............................................................................................. 7
Vehicle Safety................................................................................................................................................................... 7
Maintenance of the Wireless MultiModem..................................................................................................................... 7
Handling Precautions ....................................................................................................................................................... 8
Front Panel...................................................................................................................................................................... 9
LEDs.................................................................................................................................................................................. 9
Package Contents.......................................................................................................................................................... 10
Specifications ................................................................................................................................................................ 10
9-Pin Fem-D Sub Serial Connector ................................................................................................................................. 12
4-Position DIP Switch .................................................................................................................................................... 12
Chapter 2 –Activation and Installation ...........................................................................................................13
Activate Your Wireless Account .................................................................................................................................... 13
Insert the SIM Card into Holder [if required]................................................................................................................. 13
Connect the Antenna, Serial or USB Cable, Power, Optional Power or Voice Cable....................................................... 14
Optional Mounting........................................................................................................................................................ 16
Flat Surface Mounting.................................................................................................................................................... 16
USB CDC-ACM Virtual COM Port Installation................................................................................................................. 17
Install Virtual COM Port ................................................................................................................................................. 17
Install the Modem Driver............................................................................................................................................... 18
Chapter 3 –Using Your Wireless Modem ........................................................................................................24
Phone Numbers for the Wireless Modem ..................................................................................................................... 24
Examples of Useful AT Commands ................................................................................................................................ 24
Verifying Signal Strength................................................................................................................................................ 24
Checking Network Registration and Roaming Status .................................................................................................... 24
Checking the Modem’s Identity ..................................................................................................................................... 25
Connecting to the Internet ............................................................................................................................................ 25
Connecting to a CDMA Network for Internet Access..................................................................................................... 25
Connecting to an EDGE/GPRS Network for Internet Access .......................................................................................... 25
Create Your Dial-Up Connection in Windows Vista and XP ........................................................................................... 27
Generic Dial-Up Method - Non-Windows ...................................................................................................................... 28
Appendix A –Regulatory Compliance .............................................................................................................29
FCC Part 15 Class B Statement....................................................................................................................................... 29
EMC, Safety, and R&TTE Directive Compliance ............................................................................................................. 29
International Modem Restrictions ................................................................................................................................ 29

Contents
4 Multi-Tech Systems, Inc. MultiModem Cell User Guide
EMC Requirements for Industry Canada........................................................................................................................ 30
Waste Electrical and Electronic Equipment Statement .................................................................................................. 30
WEEE Directive............................................................................................................................................................... 30
Instructions for Disposal of WEEE by Users in the European Union .............................................................................. 30
REACH Statement.......................................................................................................................................................... 31
Restriction of the Use of Hazardous Substances (RoHS) ................................................................................................ 31
Information on HS/TS Substances According to Chinese Standards............................................................................... 33
Information on HS/TS Substances According to Chinese Standards (in Chinese) ........................................................... 34
依照中国标准的有毒有害物质信息............................................................................................................................ 34
Appendix B - Cellular Information...................................................................................................................35
Antenna System for Cellular Devices............................................................................................................................. 35
FCC Requirements for the Antenna ............................................................................................................................... 35
Antenna Specifications.................................................................................................................................................. 35
CDMA RF Specifications ................................................................................................................................................. 35
CDMA Antenna Requirements/Specifications ............................................................................................................... 35
GSM/EGSM RF Specifications ........................................................................................................................................ 35
GSM Antenna Requirements/Specifications.................................................................................................................. 36
PTCRB Requirements for the Antenna........................................................................................................................... 36
Antennas Available from Multi-Tech Systems, Inc. ....................................................................................................... 36
Appendix C –DC Power Cable.........................................................................................................................37
DC Power Cable Dimensions .......................................................................................................................................... 37

Multi-Tech Systems, Inc. MultiModem Cell User Guide 5
Product Description
The Multi-Tech MultiModem® Cell cellular modems are 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 uses 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
Related Documentation
MultiModem MTCBA-E1 (EDGE)
The MultiModem EDGE wireless modem delivers some of the fastest cellular wireless data speeds using 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.

Chapter 1 –Product Description and Specifications
6 Multi-Tech Systems, Inc. MultiModem Cell User Guide
MultiModem MTCBA-C1 (CDMA)
The MultiModem CDMA 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.
Safety
General Safety
The modem is designed for and intended to be used in fixed and mobile applications. Fixed means the device is
physically secured at one location and cannot be easily moved to another location. Mobile means the device is
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 user’s body.
RF Interference Issues
Follow any special regulations regarding the use of radio equipment due to the possibility of radio frequency (RF)
interference. Follow the safety advice given below.
●Switch OFF your wireless device when in an aircraft. Using cellular telephones in an aircraft may endanger
aircraft operation, disrupt the cellular network, and is illegal. Failing to observe this restriction may lead to
suspension or denial of cellular telephone services to the offender, legal action, or both.
●Switch OFF your wireless device when around gasoline or diesel-fuel pumps and before filling your vehicle
with fuel.
●Switch OFF your wireless device 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.
●Operating your wireless device close to other electronic equipment may cause interference if the equipment
is inadequately protected. Observe any warning signs and manufacturers’ recommendations.

Chapter 1 –Product Description and Specifications
Multi-Tech Systems, Inc. MultiModem Cell User Guide 7
Interference with Pacemakers and Other Medical Devices
Potential interference
Radiofrequency energy (RF) from cellular devices can interact with some electronic devices. This is
electromagnetic interference (EMI). The FDA helped develop a detailed test method to measure EMI of implanted
cardiac pacemakers and defibrillators from cellular devices. This test method is part of the Association for the
Advancement of Medical Instrumentation (AAMI) standard. This standard allows manufacturers to ensure that
cardiac pacemakers and defibrillators are safe from cellular device EMI.
The FDA continues to monitor cellular devices for interactions with other medical devices. If harmful interference
occurs, the FDA will assess the interference and work to resolve the problem.
Precautions for pacemaker wearers
If EMI occurs, it could affect a pacemaker in one of three ways:
●Stop the pacemaker from delivering the stimulating pulses that regulate the heart's rhythm.
●Cause the pacemaker to deliver the pulses irregularly.
●Cause the pacemaker to ignore the heart's own rhythm and deliver pulses at a fixed rate.
Based on current research, cellular devices do not pose a significant health problem for most pacemaker wearers.
However, people with pacemakers may want to take simple precautions to be sure that their device doesn't cause
a problem.
●Keep the device on the opposite the side of the body from the pacemaker to add extra distance between the
pacemaker and the device.
●Avoid placing a turned-on device next to the pacemaker (for example, don’t carry the device in a shirt or
jacket pocket directly over the pacemaker).
Vehicle Safety
●Do not use this device while driving.
●Respect national regulations on the use of cellular telephones in vehicles.
●If incorrectly installed in a vehicle, operating the wireless device could interfere with the vehicle’s electronics.
To avoid such problems, use qualified personnel to install the device. The installer should verify that vehicle
electronics are protected from interference.
●Using an alert device to operate a vehicle’s lights or horn is not permitted on public roads.
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.
●Using accessories that Multi-Tech has not authorized or that are no compliant with Multi-Tech’s accessory
specifications may invalidate the MultiModem warranty.

Chapter 1 –Product Description and Specifications
8 Multi-Tech Systems, Inc. MultiModem Cell User Guide
If the MultiModem is not working properly, contact Multi-Tech Technical Support.
Handling Precautions
Handle all electronic devices with certain precautions to avoid damage due to the static charge accumulation.
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
Multi-Tech Systems, Inc. MultiModem Cell User Guide 9
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.

Chapter 1 –Product Description and Specifications
10 Multi-Tech Systems, Inc. MultiModem Cell User Guide
Package Contents
Note: Your wireless provider supplies the SIM card (not needed for –C1 versions).
Unbundled Package
with No Accessories
Bundled Package
With Accessories
1 modem
Note: You must supply mounting screws, AC or DC power supply,
and an antenna.
1 modem 1 antenna
1 RS232 or USB cable 1 power supply with serial versions
Note: You must supply mounting screws.
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*
Sleep0.028A,.26W@9V,0.018A,.36W@
20V,0.013A,0.042W@32V
Typical0.086A,0.80W@9V,0.045A,.90W
@ 20V;.032A,1.02W @32V
Max0.305A,2.81W@9V,0.42A,2.84W@
20V,.094A,3.01W@32V
Peak.2.20A@9V,0.850A@20V,0.520A
@32V
Sleep0.030A,.28W@9V,.018A,0.36W@
20V,0.013A,0.042W@32V
Typical0.112A,.1.03W@9V,0.058A,1.16W
@ 20V; 0.041A,1.31W@32V
Max0.287A,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

Chapter 1 –Product Description and Specifications
Multi-Tech Systems, Inc. MultiModem Cell User Guide 11
Features
MTCBA-E1/-U
MTCBA-C1/-U
MTCBA-G2/-U
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
12 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.

13 Multi-Tech Systems, Inc. MultiModem Cell User Guide
Activate Your Wireless Account
Please refer to the wireless account Activation Notices included with your unit. 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 has a 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
14 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. The cable is tested 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.
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.

Chapter 2 –Activation and Installation
Multi-Tech Systems, Inc. MultiModem Cell User Guide 15
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
16 Multi-Tech Systems, Inc. MultiModem Cell User Guide
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.

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Multi-Tech Systems, Inc. MultiModem Cell User Guide 17
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: Some versions 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
1. Download the driver for your modem from the Multi-Tech website.
2. For USB versions of the Cell, ensure that the USB cable is connected to your PC.
3. For GSM versions of the Cell, ensure that the SIM card is installed prior to powering up.
4. If any Windows Install Wizard pops up, close or cancel the wizard.
5. Windows may pop-up a User Account Control window. Select the YES button to continue with the driver
installation.
6. Click on the next button to start the driver pre-installation.

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7. There will be a transitory screen, then the process will complete. Click on the Finish button.
8. Next, continue with installing the modem driver.
Install the Modem Driver
1. From the Windows Start button, select Control Panel.
2. The Control Panel opens. Double-click Phone and Modem Options. Then click on the Modems tab.

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Multi-Tech Systems, Inc. MultiModem Cell User Guide 19
3. When the Phone and Modem Options window appears, click Add.
4. On the Install New Modem window, 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 that you
downloaded from the Multi-Tech website.

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Click Next.
6. Browse to the location where you downloaded the driver.
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.