Multitech MTCMR-H User manual

MultiModem®iCell
Intelligent Wireless Modem
User Guide

Copyright and Technical Support
2 Multi-Tech Systems, Inc MultiModem iCell Intelligent Modem User Guide
MultiModem® iCell User Guide
Intelligent Wireless Modem
MTCMR-H, MTCMR-E, MTCMR-G-F4
S000455B, 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 © 2009 - 10 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 05/27/09 Initial release.
B 04/09/10 Add Universal IP, USB support, Windows Installer, and a Rev C back panel.
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: [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 iCell Intelligent Wireless Modem User Guide 3
Contents
Chapter 1 – Product Description and Specifications ...............................................................4
Product Description ...................................................................................................................................................................4
Universal IP ........................................................................................................................................................................4
MultiModem MTCMR-H (HSDPA) ......................................................................................................................................5
MultiModem MTCMR-E (EDGE) ........................................................................................................................................5
MultiModem MTCMR-G-F4 (GPRS)...................................................................................................................................5
Safety ........................................................................................................................................................................................6
General Safety ...................................................................................................................................................................6
RF Interference Issues .......................................................................................................................................................6
Vehicle Safety ....................................................................................................................................................................6
Maintenance of the Wireless MultiModem..........................................................................................................................6
Handling Precautions .........................................................................................................................................................6
Front Panel................................................................................................................................................................................7
LEDs ..................................................................................................................................................................................7
Signal LEDs........................................................................................................................................................................7
Back Panels...............................................................................................................................................................................8
Package Contents .....................................................................................................................................................................8
Interfaces...................................................................................................................................................................................8
Specifications ............................................................................................................................................................................9
RF Specifications.....................................................................................................................................................................10
Antenna Specifications ............................................................................................................................................................10
GSM/EGSM Antenna Requirements/Specifications .........................................................................................................10
Antennas Available from Multi-Tech Systems, Inc. ..........................................................................................................10
PTCRB Requirements Note .............................................................................................................................................10
FCC Requirements Note ..................................................................................................................................................10
RS232 9-Pin Functions of the Female End Connector ...............................................................................................................................10
GPIO (General Purpose Input/Output) 6-Pin Connector..........................................................................................................11
GPIO DC Characteristics..................................................................................................................................................11
Chapter 2 – Activation and Installation....................................................................................12
Activate Your Wireless Account...............................................................................................................................................12
Insert the SIM Card into Holder, If required .............................................................................................................................12
Connect the Antenna, Serial Cable, GPIO Cable, and Power .................................................................................................13
Optional – Attach the Modem to a Flat Surface .......................................................................................................................14
UIP USB CDC-ACM Virtual COM Port Installation ..................................................................................................................15
Install the Modem Driver...................................................................................................................................................16
Chapter 3 – Using Your Wireless Modem................................................................................20
Phone Numbers for the Wireless Modem ................................................................................................................................20
Examples of Useful AT Commands.........................................................................................................................................20
Verifying Signal Strength ..................................................................................................................................................20
Checking Network Registration and Roaming Status.......................................................................................................20
Checking the Modem’s Identity ........................................................................................................................................20
Connecting to the Internet .......................................................................................................................................................21
Connecting to a GPRS/EDGE/HSDPA Network for Internet Access................................................................................21
Create Your Dial-Up Connection in Windows Vista and XP .............................................................................................22
Generic Dial-Up Method - Non-Windows..........................................................................................................................23
Appendix A – Regulatory Compliance.....................................................................................24
EMC, Safety, and R&TTE Directive Compliance..............................................................................................................24
International Modem Restrictions .....................................................................................................................................24
FCC Part 15 Class B Statement.......................................................................................................................................24
Industry Canada ...............................................................................................................................................................24
Appendix B – DC Power Cable .................................................................................................25
DC Power Cable Dimensions ...........................................................................................................................................25
Appendix C - Waste Electrical and Electronic Equipment (WEEE) Statement.....................26
Appendix D – ROHS HT/TS Substance Concentration...........................................................27
Restriction of the Use of Hazardous Substances (RoHS) ................................................................................................27

4 Multi-Tech Systems, Inc. MultiModem iCell Intelligent Wireless Modem User Guide
Chapter 1 – Product Description and
Specifications
Product Description
The Multi-Tech MultiModem® iCell is a mid-range wireless modem. It is available in three models that require a SIM. All models
contain an embedded TCP/IP protocol stack for Internet connectivity, serial and USB connectors for modem configuration, and a
General Purpose Input/Output (GPIO) connector for customer interface connection. All MultiModem iCells can be desktop or
panel mounted.
The MultiModem iCell modems are available in four models:
Model Description
MTCMR-H (HSDPA) Standards based tri-band UMTS/HSDPA performance
MTCMR-E (EDGE) Quad-band E-GPRS Class 10 performance
MTCMR-G-F4 (GPRS) Quad-band GSM/GPRS Class 10 performance
All models contain an embedded TCP/IP protocol stack to bring Internet connectivity to any device without making changes to
its hardware design. Using the Internet protocols and the wireless connection to an IP network, the modems send and receive
data over the Internet. The modems offer short message service (SMS) features such as text and PDU, Point-to-point (MT/MO)
and cell broadcast.
The MultiModem iCell modems deliver some of the fastest cellular wireless data speeds using the various Internet protocols.
This is ideal for highly data-intensive applications such as remote video surveillance and other multimedia applications where
you are sending digital images, web pages and photographs.
The MultiModem iCell modems are designed around a wide variety of interface options including serial RS-232, USB, and
General Purpose Input/Output (GPIO). The serial RS-232 and USB connections provide seamless connectivity for configuration
of your application. The GPIO interface provides five user configurable GPIO’s as CMOS input or output ports to be connected
to a customer’s peripheral device. A customer application in which the GPIO interface could be used is one with a monitoring
device connected to the GPIO interface in which the monitoring device triggers an event in the IP stack to establish a TCP or
UPD socket connection or send an email stating that the monitoring device was triggered by high water.
Universal IP
All MultiModem iCell modems are equipped with an embedded TCP/IP protocol stack to automate the connection process
and open a socket for bidirectional data transmission. Multi-Tech’s Universal IP supports Telnet, SMTP/POP, FTP, TCP,
UDP, PPP as well as other automatic call management options.
AT Commands: The embedded TCP/IP stack on the MultiModem iCell modems is configured using the
Universal IP (UIP) AT Commands. These commands are documented in the Reference Guide document
number S000457x.

Chapter 1 – Product Description and Specifications
Multi-Tech Systems, Inc. MultiModem iCell Intelligent Wireless Modem User Guide 5
MultiModem MTCMR-H (HSDPA)
The MultiModem MTCMR-H wireless modem delivers some of the fastest cellular data speeds by utilizing HSDPA
technology. It allows users to connect to the Internet and send and receive data faster than possible with an ordinary
GSM/GPRS network making it ideal for highly data-intensive applications. Based on industry-standard open interfaces, the
MultiModem MTCMR-H 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 MTCMR-H wireless modem is configured using the HSDPA AT
Commands. These commands are documented in the Reference Guide for the MultiModem Wireless
HSDPA Modems, document number S000453x.
MultiModem MTCMR-E (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 MTCMR-E 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 S000371x.
MultiModem MTCMR-G-F4 (GPRS)
The MultiModem GPRS wireless modem offers standards-based quad-band GSM/GPRS Class 10 performance. Ready to
deploy, standalone data modem allows developers to add wireless communication to products with a minimum of
deployment time and expense.
AT Commands: The MultiModem MTCMR-G 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 S000293xand also the Reference Guide for the Universal IP Commands,
document number S000457x.

Chapter 1 – Product Description and Specifications
6 Multi-Tech Systems, Inc MultiModem iCell Intelligent Modem User Guide
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
Multi-Tech Systems, Inc. MultiModem iCell Intelligent Wireless Modem User Guide 7
Front Panel
The front panel is designed with two groups of LEDs that display modem activity and signal strength. The first group of 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 three Signal LEDs display the signal strength level of the wireless connection. The SIM
door on the right side of the modem provides access to the SIM card holder for those configurations.
LEDs
LED Indicators
TD Transmit Data. Lit when modem is transmitting data. Not valid while in USB mode.
RD Receive Data. Lit when modem is receiving data. Not valid while in USB mode.
CD Carrier Detect. Lit when data connection has been established. Not valid while in USB mode.
LS Link Status Dependent on Model
MTCMR-G MTCMR-H MTCMR-E
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.
Continuous “on” state
indicates that the wireless
modem is registered on the
network.
Flashing state Indicates
attempted registration on
network.
Off state. Modem could
not register
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
Depending on type of call:
Voice call – Connected to remote party
Data call – Connected to remote party or
exchange of parameters while setting up or
disconnecting a call.
TR Terminal Ready. Lit when modem is transmitting data. Not valid while in USB mode.
PWR Power. Indicates presence of DC power when lit.
Signal Indicates the wireless signal strength. Refer to Signal Strength LEDs below.
Signal LEDs
In order to verify signal strength, you must use a terminal application such as HyperTerminal. Refer to Examples of Useful AT
Commands in Chapter 3 of this guide.

Chapter 1 – Product Description and Specifications
8 Multi-Tech Systems, Inc MultiModem iCell Intelligent Modem User Guide
Back Panels
The reason for two different back panels is that the Rev B back panel could only support a 5Volt input on pins 1 and 2. The Rev
C and later back panel can support a 24Volt input on pins 1 and 2. The way to distinguish between Rev B and Rev C back
panels is that the RS-232 connector for the Rev B back panel is more to the left side of the back panel. The Rev C and later
back panel is 1.73 inches from the left side of the unit to the center point of the RS-232 connector.
Rev B Rev C and later
Package Contents
Unbundled Package
with No Accessories
Bundled Package
With Accessories
1 modem
1 Quick Start Guide
1 MultiModem CD
Note: You must supply mounting
screws, AC or DC power
supply, and an antenna.
1 modem
1 antenna
1 RS232 cable
1 USB cable
1 GPIO cable
1 power supply
1 Quick Start Guide
1 MultiModem CD
Note: You must supply mounting screws.
Note: Your wireless provider will supply the SIM card.
Interfaces
The MultiModem has several interfaces:
●LED function indicating operating status
●External antenna (via SMA connector)
●Serial and control link (via 9-pin DB9 female)
●USB 2.0 full speed, CDC-ACM Compliant
●General purpose input/output (via 6 pin 2x3 style connector)
●Power supply (via 2.5mm miniature power jack)
●SIM card holder

Chapter 1 – Product Description and Specifications
Multi-Tech Systems, Inc. MultiModem iCell Intelligent Wireless Modem User Guide 9
Specifications
Features MTCMR-H MTCMR-E MTCMR-G-F4
Performance HSDPA/UMTS
EDGE: Class 10
GPRS: Class 10
EDGE: E-GPRS Class 10,
GPRS: Class 12
GPRS: Class 10
Band, Frequency Quad-band
GSM/GPRS/EDGE/HSDPA
850/900/1800/1900 MHz
UMTS FDD: Band I/
Band II/Band V
Quad-band GSM 850/900/1800/1900
MHz
Quad-band GSM
850/900/1800/1900 MHz
Packet Data HSDPA: UE CAT [1-6], 11, 12
supported,compressed mode
according to 3GPP TS5.212
EDGE: Class 10, full
PBCCH support, coding schemes
CS-9, Mobile station Class B
GPRS: Class 10, full PBCCH
support, coding schemes CS1-4,
Mobile station Class B
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 85.6K bps, coding schemes
CS1 to CS4
Circuit-Switched
Data
GSM: Asynchronous, non-
transparent up to 9600bps
UMTS: Asynchronous,non-
transparent up to 64K bps
Up to 14.4K bps, non-transparent Up to 14.4K bps transparent and non-
transparent
Short Message
Services-SMS
Text & PDU,Point-to-Point
(MO/MT), cell broadcast
Text & PDU, Point-to-Point (MO/MT),
cell broadcast
Text & PDU, Point-to-Point, cell
broadcast
Antenna
Connector
RF Antenna: 50 ohm SMA (female
connector)
RF Antenna: 50 ohm SMA (female
connector)
RF Antenna: 50 ohm SMA (female
connector)
SIM Connector Standard 1.8 and 3V SIM receptacle Standard 1.8 and 3V SIM receptacle Standard 1.8 and 3V SIM receptacle
RS232 Connector DE9 DE9 DE9
GPIO Connector 6 pin 2x3 style 6 pin 2x3 style 6 pin 2x3 style
Power Connector 2.5mm miniature(screw-on) 2.5mm miniature(screw-on) 2.5mm miniature(screw-on)
Voltage 9V to 32 VDC 9V to 32 VDC 9V to 32 VDC
Power* Sleep .046A, .43W @ 9V, .021A,.42W @ 20V,
.014A, .45W @ 32V
Typical .325A,.2.99W @ 9V, .152A,3.04W @ 20V;
0.1A, 3.20W @ 32V
Max .532A,4.89W @ 9V, .225A,4.50W @ 20V,
.146A, 4.67W @ 32V
Peak. N/A
Sleep .036A, .33W @ 9V, .023A,.46W @ 20V,
.014A, .45W @ 32V
Typical .120A,.1.11W @ 9V, .060A, 1.20W @ 20V;
.040A, 1.28W @ 32V
Max .345A,3.15W @ 9V, .158A, 3.16W @ 20V,
.102A, 3.26W @ 32V
Peak. 1.90A @9 V, 0.703A @ 20V, 0.468A @32V
Sleep .035A, .32W @ 9V, .017A,.34W @ 20V, .012A,
.38W @ 32V
Typical .103A,.95W @ 9V, .046A,.92W @ 20V; .032A,
1.02W @ 32V
Max .183A,1.69W @ 9V, .086A,1.72W @ 20V,
.056A, 1.79W @ 32V
Peak. 1.180A @9 V, .530A @ 20V, .375A @32V
Physical
Description
4.2” Wx1.1”Hx3.4”D 2lbs
12.5 cmW x2.7cmHx 8.6cmD 0.23Kg
4.2” W x1.1”Hx3.4”D 2 lbs
12.5cmW x2.7cmH x 8.6cmD 0.2Kg
4.2” Wx1.1”Hx3.4”D 2 lbs
12.5cmW x2.7cmH x 8.6cmD 0.205Kg
Operating
Temperature **
-30° to +60° C
UL listed @ 40°
-30° to +50° C
UL listed @ 40°
-30° to +70° C
UL listed @ 40°
Storage Temp -40° to +85° C -40° to +85° C -40° to +85° C
Humidity Relative humidity 20% to 90%
noncondensing
Relative humidity 20% to 90%
noncondensing
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
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
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
*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.”

Chapter 1 – Product Description and Specifications
10 Multi-Tech Systems, Inc MultiModem iCell Intelligent Modem User Guide
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
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 Antenna ANQB-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-band radiation patterns and maintain the same specifications.
FCC Requirements Note
The antenna gain, including cable loss, for the radio you are incorporating into your product design must not exceed the
requirements at 850 MHz and 1900 MHz as specified by the FCC grant for mobile operations and fixed mounted operations
as defined in 2.1091 and 1.1307 of the FCC rules for satisfying RF exposure compliance. The antenna used for transmitting
must be installed to provide a separation distance of at least 20cm from all persons and must not transmit simultaneously
with any other antenna transmitters. User and installers must be provided with antenna installation instructions and
transmitter operating conditions to satisfying RF exposure compliance.
RS232 9-Pin Functions of the Female End Connector
The following table explains the pin functions.
External Power Serial Cable
Female Connector
Signal IN/OUT
Pin 1 CD O
Pin 2 RX O
Pin 3 TX I
Pin 4 DTR I
Pin 5 GND --
Pin 6 DSR O
Pin 7 RTS I
Pin 8 CTS O
Pin 9 RI O

Chapter 1 – Product Description and Specifications
Multi-Tech Systems, Inc. MultiModem iCell Intelligent Wireless Modem User Guide 11
GPIO (General Purpose Input/Output) 6-Pin
Connector
The GPIO pins are configured using Universal IP (UIP) AT Commands. Refer to the Universal IP (UIP) AT Command Reference
Guide on your MultiModem CD. The following table explains the GPIO functions:
Pin
Number
Description GPIO 6-Pin
Connector
Pin 1 DIO 0
Pin 2 DIO 1
Pin 3 DIO 2 / ADC 0
Pin 4 DIO 3 / ADC 1
Pin 5 ADC 2
Pin 6 Gnd
The GPIO pins can be configured independent of each other. An explanation of the difference between the Rev B and Rev C
boards is provided in the Back Panel description in Chapter 1.
●Pin 1 Digital Input (5V tolerant TTL/CMOS levels) for Rev B, 24 Volt tolerent for Rev C and later.
●Pin 2 Digital Input (5V tolerant TTL/CMOS levels) for Rev B, 24 Volt tolerent for Rev C and later.
●Pin 3 can be configured as either Digital Input (5V tolerant TTL/CMOS levels) or Digital Output (3.3V High) or as an
ADC input (0 to 3.3V rail)
●Pin 4 can be configured as either Digital Input (5V tolerant TTL/CMOS levels) or Digital Output (3.3V High) or as an
ADC input (0 to 3.3V rail)
●Pin 5 is configured as an ADC input (0 to 3.3V rail)
●Pin 6 is GND and must be connected to the ground of the attached device
GPIO DC Characteristics
Pins 1,2 - Rev B Board
Input Voltage
Parameter Min Max Units
Input Low-level Voltage -0.3 0.8 V
Input High-level Voltage 2.0 5.5 V
Pins 1,2 - Rev C and later Board
Input Voltage
Parameter Min Max Units
Input Low-level Voltage 0.3 1.0 V
Input High-level Voltage 3.0 24 V
Pins 3,4
Input Voltage
Parameter Min Max Units
Input Low-level Voltage -0.3 0.8 V
Input High-level Voltage 2.0 5.5 V
Pins 3, 4
Output Voltage
Parameter Min Max Units
Output Low-level Voltage 0.0 0.4 V
Output High-level Voltage 2.9 3.3 V
Pins 3,4
Output Current
Parameter Min Max Units
Output Current 2 mA
Pins 1,2 are digital input only
Pin 5 is an analog input only
Pins 1-5 contain ESD protection

12 Multi-Tech Systems, Inc. MultiModem iCell Intelligent Wireless Modem User Guide
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.

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Connect the Antenna, Serial Cable, GPIO Cable,
and Power
1. Connect a suitable antenna to the SMA connector (see antenna specifications in Chapter 1).
2. If you are connecting to a serial interface, connect the DE9 connector (9-pin) of the RS232 cable to the RS232
connector on the modem and connect the other end to 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. Connect the GPIO cable to the I/O connector on the modem and the other end to the external device that the modem
is monitoring.
4. 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 on a vehicle in
which you are mounting the MultiModem.
•Connect red wire to the "+" (positive) terminal and 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).

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14 Multi-Tech Systems, Inc MultiModem iCell Intelligent Modem User Guide
Optional – Attach the Modem to a Flat Surface
Before you mount your modem to a permanent surface, verify signal strength, refer to Using Your Wireless Modem, Verify
Signal Strength in Chapter 3.
The modem can be panel mounted with screws spaced according to the measurement shown.
Note: Use either #4 or #6 pan head screws for all four mount locations.

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Multi-Tech Systems, Inc. MultiModem iCell Intelligent Wireless Modem User Guide 15
UIP USB CDC-ACM Virtual COM Port Installation
Windows XP, VISTA, 2003 Server, 2008 Server, Windows 7 (32-bit or 64-bit), Linux (Kernel 2.6.xx using CDC-ACM module) are
supported.
For Linux, a 2.6 kernel is required. The standard CDC-ACM driver will work.
For Windows XP, VISTA, 2003 Server, 2008 Server, and Windows 7, run the automatic installer from your product CD or run
install.bat from the UIP_VCOM_autoinstall directory on your product CD and proceed with the procedure below.
Note: Certain levels of Windows has 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. http://suport.microsoft.com/kg/925681
After installing the virtual com port, the correct modem driver may be installed to the com port (make sure the USB port of the
MTCMR is connected with a SIM card before the modem driver installation.
1. Power on the MTCMR ensuring that the SIM card is installed prior to powering up.
2. Ensure that the USB cable is connected to your pc.
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 Continue button to continue with the driver
installation.
7. Click on the Next button to start the driver pre-installation.

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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.

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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>.

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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>.

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Multi-Tech Systems, Inc. MultiModem iCell Intelligent Wireless Modem User Guide 19
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; other wise, choose COM2 (most common). 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.
4. 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.

20 Multi-Tech Systems, Inc. MultiModem iCell Intelligent Wireless Modem User Guide
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 iCells 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 LED Bars
0 - 10 Weak or Insufficient 1 Bar LED is lit
11 - 20 Average 1 Bar and 2 Bar LEDs are lit
21 – 31 Exceptional 1 Bar, 2 Bar, 3 Bar LEDs are lit
99 No signal No light
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
V
alue 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.