Specifications

Chapter 1 – Product Description and Specifications
Wireless ModemModule GSM/GPRS Developer’s Guide 8
Feature Descriptions
Integration Reduces Space, Power and Cost. The ModemModule GSM/GPRS integrates the controller, RF
transceiver, and antenna interface in one compact unit. This integration requires low power, occupies very
little space, and provides an overall reduction in costs.
Reduces Development Time. The ModemModule GSM/GPRS can make your existing and next generation
device, machine, or system, communication-ready without requiring significant 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-integrate wireless module allows you to enhance your
product while you focus on developing its core features.
Voice Features. The ModemModule GSM/GPRS provides telephony and Dual Tone Multi Frequency (DTMF)
functionality. It also allows for emergency calls as well as full rate, enhanced Full Rate and Half Rate
(FR/EFR/HR).
Short Message Services. The ModemModule GSM/ GPRS offers SMS features such as text and PDU, point-to-
point (MT/MO) and cell broadcast.
Compatible Supplementary Services. The ModemModule GSM/GPRS is compatible with supplementary services
such as call forwarding, call barring, multiparty, call waiting and call hold, calling line identification, advice of
charge, USSD, closed user group and explicit call transfer.
Management Features. The ModemModule GSM/ GPRS provides advanced management features including
phone book management, fixed dialing number, real time clock and alarm management.
Industry-Standard Modem Commands. The ModemModule GSM/GPRS provides industry-standard AT-
style commands for ease of integration into your existing software application.
ModemModule Pin-Out. The ModemModule GSM/ GPRS interfaces easily with existing products through a
standard serial communication channel. The complete on-board RF transceiver interfaces with an antenna
for direct connection to wireless SMS, circuit-switched dial-up, or packet data networks. The
ModemModule is a Data Terminal Equipment (DTE) device with serial asynchronous protocol support. The
serial DTE channel is capable of transfer speeds to 115.2K bps and can be interfaced directly to a UART
or microcontroller. It can be board-to-board or board-to-cable mounted.
Developer’s Kit. The ModemModule GSM/GPRS Developer’s Kit allows you to plug in the ModemModule
and use it for testing, programming and resolving application issues.
Packet-Switched Data. The ModemModule GSM/GPRS supports GPRS Class 10 packet-switched cellular data.
This enables mobile Internet functionality by allowing interworking between the existing Internet and the cellular
network at speeds up to 85K bps. Any service that is used over the fixed Internet today – File Transfer Protocol
(FTP), web browsing, chat, e-mail, telnet -- is available over the cellular network, as well. The MultiModem
GSM/GPRS supports PBCCH and coding schemes CS1 to CS4, and is compliant with SMG31bis.
Circuit-Switched Data (CSD). The ModemModule GSM/GPRS also supports GSM circuit-switched cellular data
connections. Circuit-switched data connections support speeds up to 14.4K bps, Class 1 and Class 2 Group 3
fax, as well as MNP2 V.42bis compression. CSD cellular wireless connections are ideal for applications that
require a quick wireless replacement of an existing point-to-point analog dial-up connection. They integrate
seamlessly with your current application requiring little infrastructure change.