GSM based call conference system
C. Kavitha, A. Venkat Ramana, K. Narendra Swaroop, S. SushmaRaj · International Journal of Managment, IT and Engineering · 2012
In the present scenario, a business firm can have multiple branches across the country or the world. To communicate with the branches, there are plenty of communication systems available. One such is the GSM based call conference system. A communication link can be established between the central office and its branches using this technology. A hardware circuit has been designed using 8051 microcontroller to connect the sub-branches with its zones. Software has been developed using VB to connect the main office and the branches. The project reduces the effort and time to make announcements and to connect to multiple zones in the sub-branch. Moreover, it is a low cost technology as the components which are required to implement the technology are inexpensive and easily available in the market. Further this technology can be enhanced with more features.