To understand the basic principles of GSM mobile communication system , in steps of theory, design and practice.


Lab mobile communication trainer is a highly flexible GSM modem for easy integration with RS-232 and audio interface. It is equipped with features of circuit switched data, SMS, Voice and GPRS .LAB GSM is a perfect solution to use with SMS gateways, access internet while on the move and corporate communications (GPRS, Data transfer & PC Fax even in remote location). The Mobile communication system is controlled by a microcontroller. Programs for this microcontroller can be written in a variety of languages including Assembly, C The use of Flowcode for mobile communication technology is well supported with an Experimental manual and pre-written high level routines for controlling all parts of the system. This also includes several working programs.


  • Dual /tri band 900/1800/1900 MHZ GSM
  • Data, SMS (Text & PDU), Fax, Voice and GPRS
  • DC input voltage
  • Fully compliant with ETSI, GSM Phase 2+specifications
  • Low power consumption
  • AT Commands
  • 1.8v & 3V SIM Interface
  • RS-232 interface (9 PIN ‘D’ type female)
  • Connectivity GSM / GPRS


    • Module Dual/Tri band GSM 900/1800/1900MHz with class 10 GPRS
    • Output Power Class 4 (2W for GSM 900)
    • Class 1 (1W for GSM 1800)
    • SMS Supports Text and PDU mode, Point to Point & Cell Broadcast
    • Data Data circuit Asynchronous and non transparent upto 14.4 kbps
    • Autobaud rate (2400, 4800, 9600. 19200, 38400, 57600 bps)
    • Fixed baud rate (300, 600, 1200, 9600, 115200 bps)
    • Fax Automatic fax group 3 (Class 1 & 2)
    • Modem compatibility V.29, V.27 (TER and V.21Ch II)
    • PC Fax compatibility CCITT, G3
    • GPRS Packet Data Feature Class 10
    • Coding Scheme CS1 to CS4, embedded TCP/IP Stack
    • AT Commands Interface GSM 07.05 and 07.07
    • Connectors RS-232 Serial, DC Power socket
    • SMA Antenna connector, SIM Card Holder
    • Power Adaptor Input 7.2V DC 1.5A
    • LED Indications Power ON, Network
    • Antenna SMA Rubber /WHIP Antenna

List of Experiments

  • Study of GSM technology
  • Getting started with GSM trainer
  • Study of GSM MODEM and it’s components
  • Introduction to AT commands
  • Modem Commands Execution through AT commands from PC
  • Data communication using AT commands from PC
  • Making call,attend the call and sending text message through microcontroller


  • Computer simulated outputs and Step-By-Step detailed instructions are provided with the instruction manual.
  • Microcontroller
  • Telephone hand set
  • Burner kit
  • Software CD
  • Interface cables

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