1. SENDING & RECEIVING SMS VIA GSM TECHNOLOGY By - Vivek Dhiman (06403) Nipun Mahajan (06413) Ketav Sharma (06448) MENTORS : Dr. (Mrs.) Rajeevan Chandel Mrs. Meenakshi Sood

2. ABSTRACT  The project involves the design of a embedded system that can be used to send & receive SMS through GSM technology. Usage of this technology accomplishes communication between the embedded system and mobile phone. The vital aspect involves the usage of a GSM modem by means of AT (Attention) commands.

3. MOTIVATION & OBJECTIVE  To utilize our skills towards design and development of applications related to GSM technology  GSM is the latest technique used for communication between the mobile and the embedded devices.  The objective of the project is to send and receive SMS by means of a GSM Modem

4. Global System for Mobile  Popular standard for mobile phones  2G mobile phone system  Operation bands - 900 MHz or 1800 MHz  Key feature – Subscriber Identity Module (SIM) WHY GSM TECHNOLOGY ?

5. SMS SENDING GS M MODEM KEYPAD MICRO CONTROLLER GSM MODEM ANTENNA

6. SMS RECEIVING GSM MODEM MICRO CONTROLLER LCD DISPLAY ANTENNA

8. COMPONENTS USED Microcontroller - ATMEGA 16L Crystal Oscillator- 8 MHz RS 232 - Serial Communication GSM Modem - Communication LCD - Display SOFTWARES USED Kiel C & AVR Studio 4

9. RS 232  A "Space" (logic 0) between +3 and +25 Volts.  A "Mark" (Logic 1) between -3 and -25 Volts.  Open circuit voltage – less then 25v

10. MICROCONTROLLER ATMEGA 16L  16K Bytes of In-System Self programmable Flash program memory  512 Bytes EEPROM  1K Byte Internal SRAM  32 Programmable I/O Lines

11. GSM MODEM FEATURES  Tri band GSM Modem  Built in TCP/IP Protocol  AT Command Based  Designed for GPRS, SMS,Voice Applications.

12. INTERFACES OF GSM MODEM RS-232 with D type 9 pin connector GSM/GPRS antenna Power supply  AC / DC power adapter  Input ac voltage – 230v  Output dc voltage – 12v Flag opening type SIM holder

13. FUTURE ENHANCEMENT  Addition of different designs in text message.  Sending of 5-10 messages at a particular time.

14. REFERENCES [1] M. AL-Rousan, A. R. AI-Ali and K. Darwish, “GSM- Based Mobile Tele-Monitoring and Management System for Inter-Cities Public Transportations,” IEEE Int. Conf. on Industrial Technology (ICIT), 2004, pp. 859- 862. [2] S.Vogioukas,M.Roumeliotis, “A system for basic level network fault management based on GSM short message service”, IEEE international conf on communication, 2001.

15. [3] M.Sarram, M.Ghasemzadeh & V.Aghaei, “Remote control & overall administration of computer networks using SMS”, ICTTA 2008. [4] Rashid & Rashid, “8051 microcontroller”, PHI, 2005. [5] Arnaud henry & Labordere vincent jonack, “SMS & MMS interworking in mobille networks”, Artech House, 2004.