SENDING & RECEIVING SMS
VIA
GSM TECHNOLOGY
By Vivek Dhiman (06403)
Nipun Mahajan (06413)
Ketav Sharma (06448)
MENTORS :
Dr. (Mrs.) Rajeevan Chandel
Mrs. Meenakshi Sood
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.
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
WHY
GSM TECHNOLOGY
• 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)
?
SMS SENDING
KEYPAD
ANTENNA
MICRO
CONTROLLER
GS
GSM
M
MODEM
MODEM
SMS RECEIVING
ANTENNA
GSM
MODEM
MICRO
CONTROLLER
LCD
DISPLAY
COMPONENTS USED
•Microcontroller
•Crystal Oscillator
•RS 232
•GSM Modem
•LCD
-
ATMEGA 16L
8 MHz
Serial Communication
Communication
Display
SOFTWARES USED
Kiel C & AVR Studio 4
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
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
GSM MODEM
• FEATURES
Tri band GSM Modem
Built in TCP/IP Protocol
AT Command Based
Designed for GPRS, SMS ,Voice Applications.
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
FUTURE ENHANCEMENT
Addition of different designs in text message.
Sending of 5-10 messages at a particular time.
REFERENCES
[1] M. AL-Rousan, A. R. AI-Ali and K. Darwish, “GSMBased Mobile Tele-Monitoring and Management
System for Inter-Cities Public Transportations,” IEEE Int.
Conf. on Industrial Technology (ICIT) , 2004, pp. 859862.
[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.
[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.