Judul: Simulasi Protokol Autentikasi Pelanggan pada Voice Privacy
Abstrak: Existing design of the telephone public network is susceptible to eavesdropping on its voice stream. Consequently, any wire taper can listen to supposedly private conversation. In order to prevent such eavesdropping, we propose a protocols and its implementation for end-to-end voice privacy authenticate as a service available for interested subscribers. Our protocols consist of customer enrollment system, customer authentication system and simulation voice privacy. Protocols that we made are adaptation from Sharif and Wijekesera journal with the title Providing Voice Privacy as a Service over the Public Telephone Network. The result of the process shows how the customer enrolls and how the system process the password, how the system authenticate customer simulate voice privacy.
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Judul: Integrasi Infrastruktur Teknologi VoIP pada Smartphone (Android) dan PABX pada Lingkungan Jaringan IPB
Abstrak: Voice over Internet Protocol (VoIP) has become a widely used communication media. The increase of internet and number of smartphone users has become important factors that supports the broader use of VoIP technology. While on the other hand the number users of Public Switched Telephone Network (PSTN) is still quite a lot, even in office buildings are usually equipped with a device Private Automatic Branch eXchange (PABX). The purposes of this research is to interconnect VoIP networks and PABX network on IPB computer network and also develop a VoIP client application for Android. In this research the use of Android smartphone is limited on Wi-Fi network. The method used in this study consisted of: study of the network topology of IPB, installation of VoIP server, interconnection between VoIP network and PABX, interconnection VoIP server and server of Lightweight Directory Access Protocol, and development of VoIP client application for smartphones. Communication between VoIP and PABX on the IPB computer network has been established, and a VoIP client application for smartphones has been developed. The values of delay, jitter and packet loss are 43.74 ms, 14.76 ms, and 0.81% respectively and the value of Mean Opinion Score (MOS) is between 4 and 4.3. It can be concluded that the quality of VoIP networks in IPB is good.
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Judul: Biology and ecology of the buffalo fly, haematobia exigua de meijere (diptera:muscidae)
Abstrak: The life history of the buffalo fly was observed at room temperature of 27°-29.5°C and at a relative humidity of 48-68 percent. The eggs hatched after 17-22 hours, with an average of 18 hours. First instar larvae measured 1.25 + 0.16 mm long and 0.27 + 0.037 mm wide. reach the second larval stage. It took 6-12 hours to the second instar larvae measured 2.676 +0.187 mm long and 0.353 +0.028 mm wide. The second instar took about 12-24 hours to reach the third larval stage. The third instar measured 6.833 + 0.189 mm long and 0.919 + 0.051 mm wide. It took about 2-3 days for the third instar to become pupae. Duration of the pupal stage was about 5-7 days before the adults emerged. Under laboratory condition, the buffalo fly completed its life cycle in 9.5 to 10.5 days, whereas under field condition it took 9-14 days with an average of 10.5 days. The growth ratio which was based on the measurements of the cephalo-pharyngeal skeleton of each instar was 1.797. The preoviposition period was 8-12 days and mating usually occurred on the 6th or 7th day. The longevity of the male was 29 days, whereas it was 32 days in the female. The range of egg production under laboratory condition was between 20-139 per female fly. The belly and hind legs of the carabao were the most preferred habitat either during cloudy and cool dry or shiny and warm day. When the weather was clear and the carabao was in the shade, the flies tended to be more distributed particularly on the shoulder, dewlap, back and horns. The carabaos had relatively fewer Musca sp. and Stomoxys calcitrans than cattle; never the less carabaos had a higher infestation of buffalo fly than cattle. Oviposition occured either during the day or night but the buffalo flies were more active during the night than in the day time. The effect of various lengths of exposure time of manure in relation to the oviposition was profound. observed, the maximum number of the buffalo flies was occurred when the dung was exposed for 30 minutes. With increasing time of exposure the number and variety of insects also increase. It was evident that Sepsidae and psychodidae were the most dominant insects emerging from the dung. The number of buffalo flies also increased with increasing
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