Server Gateway IMBMCCP Result and Discussion

Figure 3. The display of test result Based on test results of multi connection server load balancing using two GSM modems then the resulting bit rate is roughly 2 times the bit rate by using a single modem connection. Internet services are used in this study is an Internet service with a maximum capacity of 1 Mbps with a record of the use of Internet connections has not exceeded the allowable quota is 1 Gigabyte. Thus, the connection using two modems would generate a capacity of 2 Mbps. Testing the average bit rate that can be obtained by using a modem with Telkomsel Flash in this experiment is 500 Kbps up 700 Kbps during downloads. So the connection using two modems will produce up to 1 Mbps bit rate 1.5 Mbps during downloads. Figure 4. Display test results using 2 pieces of the bit rate modem Minimum standard set of Internet services by government is 1 Kbps user. Thus, a server with 2 pieces of this modem connection can serve approximately 1000 sd 1500 users. If the average user want a bit rate that is more feasible to conduct an Internet connection such as a minimum threshold is 10 Kbps, the server-based mobile Internet gateway with 2 pieces of multi- modem connection can serve 100 to 150 users. Based on the analysis of experimental data shows that the server-based mobile Internet gateway multi connection decent Internet connection is used to serve one class comprising 40 students smoothly. If viewed in terms of bandwidth per month subscription fee, then the Internet connection by using two cellular phone modems are also relatively inexpensive, which is 2 x Rp. 110,000.00 = Rp. 220,000.00. However, the application server that has been tested in laboratory scale needs to be investigated further to determine the performance especially in the field significantly.

4. Conclutions and Future Work

The conclusions of this research are: 1. The prototype system uses software MCPMI Opensource Zeroshell software that implements load balancing work well and using the N numbers of cellular telephone modems will generate N x Bit rate of each modem. Tests using 2 pieces of modem with up to 500 Kbps data service 700 Kbps each modem will generate 1 Mbps to 1.5 Mbps. 2. Subscription cost of bandwidth for each packet is used in the testing service is Rp. 110.000, - each month, so by using 2 pieces of modems require a fee of Rp. 220.000, - each month for Internet access service with bit rate of 1 Mbps up 1.5 Mbps. Future work: 1. MCPMI server prototype is still in the form of a laboratory scale and still needs to be tested in the field to obtain a picture of system performance significantly in rural areas. 2. Method of load balancing methods is still limited to failover and the need to develop another method of load balancing is more optimal. 95 A CKNOWLEDGMENT We thank Directorate General of Higher Education of the National Education Ministry for funding this research. R EFERENCES [1] Hidayat, A. Prabantoro, G. 2005: Mobile Internet Center Berbasis Wireless Connection Sebagai Solusi Efektif Media Pendukung Pembelajaran Aplikasi Teknologi Internet Di Daerah Terpencil. Prosiding: Seminar Nasional Aplikasi Teknologi Informasi 2005 SNATI 2005, Yogyakarta, 18 Juni 2005. [2] Rappaport, T. S. 1996: Wireless Communication. New Jersey: Prentice Hall. [3] Smith, C. Collins, D. 2002: 3G Wireless Networks. New York: McGraw-Hill. [4] Hogbin, E. J. Käfer, K. 2009: Front End Drupal Designing, Theming, Scripting. Boston: Prentice Hall. [5] Svennerberg, G. 2010: Beginning Google Maps API 3: Learn How to Build Lightning Fast Mapping Applications with The Latest, Totally Remade. USA: Apress. 96