Multi-Tech Systems MTCBA-C User Manual
TM
MultiModem
CDMA
External Wireless Modem
(Data/Fax/Voice)
MTCBA-C
User Guide
User Guide for MultiModem CDMA
External Data/Fax/Voice Wireless Modem
MTCBA-C
P/N S000303D, Revision D
All rights reserved. This publication may not be reproduced, in whole or in part, without prior expressed written
permission from Multi-Tech Systems, Inc.
Copyright © 2004 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.
Revision Date Description
A 7/15/03 Initial Release, Rev A.
B 9/17/03 Revise package contents list & powering drawing.
C 01/20/04 Revise package contents, add RS232 Connector pinout diagram
D 04/12/04 Revised package contents and features lists.
Multi-Tech Systems, Inc. MultiModem CDMA User Guide 2
Contents
CHAPTER 1: DESCRIPTION AND SPECIFICATIONS ......................................................................................4
PRODUCT DESCRIPTION ..............................................................................................................................................4
Package Contents ...................................................................................................................................................4
Basic Package ....................................................................................................................................................................... 4
Bundled Package................................................................................................................................................................... 4
Interfaces ................................................................................................................................................................4
Parts to be Supplied by End User ..........................................................................................................................4
Antenna/RF Specifications ..................................................................................................................................... 4
AT Command Info ..................................................................................................................................................5
Phone Number for the Wireless Modem.................................................................................................................5
Network Access.......................................................................................................................................................5
Features..................................................................................................................................................................5
APPLICATION OVERVIEW............................................................................................................................................6
Application Types ...................................................................................................................................................6
Benefits/Features in Applications...........................................................................................................................7
Functions – CDMA Modes .....................................................................................................................................7
SPECIFICATIONS..........................................................................................................................................................8
General Specifications ...........................................................................................................................................8
Electrical Characteristics.......................................................................................................................................8
Input/output electrical characteristics for external connections............................................................................ 9
LED Indicators .......................................................................................................................................................9
RS232 15-Pin Connector Pinout ..........................................................................................................................10
CHAPTER 2: INSTALLATION..............................................................................................................................11
MECHANICAL MOUNTING.........................................................................................................................................11
ELECTRICAL INSTALLATION & CONFIGURATION ......................................................................................................13
MOBILE PHONETOOLS ..............................................................................................................................................15
DIRECT MODEM INSTALLATION................................................................................................................................15
VERIFYING SIGNAL STRENGTH .................................................................................................................................15
VERIFYING NETWORK REGISTRATION ......................................................................................................................15
TESTING THE CONFIGURATION .................................................................................................................................16
CHAPTER 3: TROUBLESHOOTING ...................................................................................................................17
SITUATION A: THE MODEM DOES NOT ANSWER THROUGH THE SERIAL LINK .............................................................17
SITUATION B: THE MODEM ALWAYS RETURNS «ERROR» WHEN TRYING TO ISSUE A COMMUNICATION ....................18
SITUATION C: THE MODEM ALWAYS RETURNS «NO CARRIER» WHEN TRYING TO ISSUE A COMMUNICATION ............19
CHAPTER 4: SAFETY ............................................................................................................................................20
GENERAL SAFETY.....................................................................................................................................................20
VEHICLE SAFETY ......................................................................................................................................................20
MAINTENANCE OF YOUR MODEM.............................................................................................................................21
YOUR RESPONSIBILITY .............................................................................................................................................21
CHAPTER 5: WARRANTY & REPAIRS POLICIES ........................................................................................22
Multi-Tech Warranty Statement ...........................................................................................................................22
Repair Procedures for U.S. and Canadian Customers ........................................................................................22
Repair Procedures for International Customers (Outside U.S.A. and Canada) ..................................................23
Repair Procedures for International Distributors ...............................................................................................23
Replacement Parts................................................................................................................................................23
CHAPTER 6 - REFERENCE INFORMATION ....................................................................................................24
WIRELESS MODEM REFERENCE INFO........................................................................................................................24
Multi-Tech Systems, Inc. MultiModem CDMA User Guide 3
Chapter 1 - Description and Specifications
Chapter 1: Description and Specifications
Product Description
The Multi-Tech MultiModem CDMA is an external data/fax/voice wireless modem. It also supports mobile
originated short message service (SMS) and mobile-terminated SMS. Designed for global use, it offers
standards-based multi-band CDMA2000 1x performance. This ready-to-deploy, standalone modem allows
developers to add wireless communication to products with a minimum of development time and expense. The
MultiModem CDMA is based on industry-standard open interfaces, and can be desktop or panel mounted.
Package Contents
Basic Package
• one modem
• two holding bridles (mounting brackets)
• one fused power cable
• one Quick Start Guide
Bundled Package
• All Basic Package items except the fused power cable, plus
• one RS232 15-to-9 pin cable
• four adhesive-backed rubber feet for table-top mounting
• one antenna
• one universal power supply with power cord
• one product CD
Interfaces
The Wireless MultiModem has several interfaces:
• LED function indicating operating status
• External antenna (via SMA connector)
• Serial and control link (via 15 pins SUB D)
• Power supply (via 2.5mm miniature power jack)
Parts to be Supplied by End User
• Mounting screws (screw shaft diameter = .17” max.)
• Antenna
• The Wireless MultiModem is shipped with an antenna suited for it. However, if the antenna supplied does not
meet your application requirements (for size, shape, mounting style, etc.), you must supply an antenna
yourself. In general, the antenna used must be both of the correct frequency and of a style appropriate to
the application. See the Antenna/RF Specifications section below.
Antenna/RF Specifications
Frequency
Impedance
VSWR
Typical Radiated
Gain
CDMA 800 CDMA 1900
824 to 894 MHz 1850 to 1990 MHz
50 ohms
<1.5
0 dBi on azimuth plane
Multi-Tech Systems, Inc. MultiModem CDMA User Guide 4
Chapter 1 - Description and Specifications
AT Command Info
AT commands for the CDMA wireless modem are published in a separate Reference Guide included on
the product CD and posted on the Multi-Tech web site.
Phone Number for the Wireless Modem
Every wireless modem will have its own unique phone number.
Network Access
The network access arrangements to be specified in Windows Dial-Up Networking (of the computer that
the wireless modem is serving) will vary according to the type of wireless service used.
• For point to point data, a circuit-switched data connection is used. The user can set up DUN to make
a conventional V.32bis modem connection to any terminating modem at the other end. The phone
number specified in DUN can be one supplied by the wireless service provider or another phone
number related to a different dialup modem service (e.g., a dialup modem service phone number from
any commercial or private dialup network).
• For CDMA 1x data, a single DUN number is generally used by all of a wireless provider’s subscribers
throughout its area of coverage (regional, nationwide, continental, etc.). Rather than being a literal
phone directory number, as in conventional DUN, this is a code that gives the modem Internet
access.
Features
• CDMA2000 1xRTT operation
• Dual-band 800/1900 CDMA
• 800 MHz with R-UIM support
• Class 2.0 Group 3 FAX
• Desktop or panel mounting
• Short Message Service features including SMS mobile originated, SMS mobile
terminated, cell broadcast, Over the Air Activation (OTA), OTASP, OTAPA
• Voice features include DTMF, telephony, OCELP 13K, echo cancellation
• SMA antenna connector
• Serial interface supports DTE speeds to 230K
• AT command compatible
• CDMA IS-95-A, IS-95B; backwards compatible
• Packet data up to 153K bps forward and reverse
• Circuit-switched data up to 14.4K bps
• Phone book management and Personal Information Management (PIM)
• Fixed dialing number
• Supplementary services including call forwarding, call barring, multiparty, call
waiting and call hold, calling line identification, closed user group, call transfer
• Numerous LEDs present operational status
• Real time clock
• Alarm management
Multi-Tech Systems, Inc. MultiModem CDMA User Guide 5
Chapter 1 - Description and Specifications
Application Overview
Application Types
With packet data speeds up to 153K bps, the MultiModem CDMA is targeted at applications that periodically
need to send or receive data over a wireless network. It is an ideal solution for:
Appliances Remote Diagnostics
ATM Terminals Remote Metering
Automotive Security Systems
Data Collection Vending/Gaming Machines
Gas Pumps Other devices requiring wireless
connectivity.
Industrial and Medical Remote
Monitoring Systems
Note: The Wireless MultiModem
must be mounted with at least 8
inches (20 cm) of clearance from the
human body.
RS2 32
Wireless MultiModem used in
remote ATM application.
Multi-Tech Systems, Inc. MultiModem CDMA User Guide 6
Chapter 1 - Description and Specifications
Benefits/Features in Applications
Short Development Time. The MultiModem CDMA can make your existing and next generation device,
machine, or system, communication-ready without requiring any hardware changes to its design. It actually
provides faster time-to-market because it relieves the burden and expense of obtaining network and RF
approvals. This complete, ready-to-deploy wireless modem allows you to enhance your product while you
focus on developing its core features.
Voice Features. The MultiModem CDMA provides telephony and Dual Tone Multi Frequency (DTMF)
functionality as well as QCELP (13K) and echo cancellation.
Short Message Services. The MultiModem CDMA offers SMS features such cell broadcast, Over the Air
Activation (OTA), OTASP, and OTAPA. The MultiModem CDMA is SMS Mobile Originated and SMS Mobile
Terminated.
Compatible Supplementary Services. The MultiModem CDMA is compatible with supplementary services
such as call forwarding, call barring, multiparty, call waiting and call hold, calling line identification, closed user
group and call transfer.
Management Features. The MultiModem CDMA provides advanced management features including phone
book management, fixed dialing number, real time clock and alarm management.
Industry-standard Modem Commands. The MultiModem CDMA provides industry-standard AT-style
commands for ease of integration into your existing software application.
Industrial Chassis. The MultiModem CDMA is packaged in a rugged, water resistant, industrial chassis. The
chassis has an RS-232 DE-15 Voice/Data interface connector and a permanent screw-type power connector. It
also has an SMA antenna connector. The chassis can be side-mounted on a panel or top-mounted on a
desktop or other surface. A set of LEDs indicate the modem’s operational status.
Functions – CDMA Modes
MODE DESCRIPTION
Standard Dual Band 800/1900 CDMA
Interface Serial interface RS232. V.24/V.28 Autobauding
SMS Mobile Originated (MO) and Mobile Terminated (MT),
Data Asynchronous 2400, 4800, 9600 and 14400 bps.
Fax 2400/4800/7200/9600 bps
function. AT command set based on TIA/EIA/IS707.3,
V.25ter and GSM 07.05 & 07.07
Over the Air Activation (OTA), OTASP, and OTAPA.
Data Transparent and Non Transparent modes.
Mode 3.1 KHz (PSTN) and V110 (ISDN).
Class 2. Group 3 compatible.
Multi-Tech Systems, Inc. MultiModem CDMA User Guide 7
Specifications
Power Requirements 5 V to 32VDC; 400mA Average @5V,
Mechanical Dimensions &
Weight
Connectors & Fasteners
Operating Temperatures -30 to +70°C
Certifications EMC: FCC Part 2, 15, 22, 24, EN 55022 &
Chapter 1 - Description and Specifications
General Specifications
700mA Maximum @ 5V
4.3" w x 2.4" h x 0.94" d; 4.2 oz.
(11 cm x 6.1 cm x 2.4 cm; 120 g)
Antenna Connection type: SMA jack
Serial Connector: 15-pin RS232 SUB D
female (DE15S)
Pins: RS232 link, audio link, RESET
Power Connector: 2.5mm miniature power
jack
EN 55024
Safety: UL 60950, EN 60950
Switching the modem
on/off
Voltage Range Voltage range: 5 to 32V DC
Overvoltage and
Undervoltage
INSTALLATION/ START- UP
The device is permanently powered (when
connected to the power supply).
GND : 0V
Correct operation of the Wireless
MultiModem in communication mode
is not guaranteed if input voltage falls
below 5V.
Multi-Tech Systems, Inc. MultiModem CDMA User Guide 8
Electrical Characteristics
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