International Research Journal of Engineering and Technology (IRJET) Volume: 04 Issue: 03| March -2017
www.irjet.net
e-ISSN: 2395 -0056 p-ISSN: 2395-0072
Study on Performance of simulation analysis on Multimedia Network Shiferaw Hermela Shimelash1, Li Yao Hui2 ,Fares Mohmmed Mehdi Hassan3 1,2Tianjin University of
Technology and Education, School of Applied Computer Technology Add: 1310 Dagu Nan Road, Hexi District Tianjin, P.R.China 3 Nanjing Forestry University, School of mechanical and electrical engineering Add: No.159 Lonpan Road Nanjing,P,R, China The packets transmit one-by-one, and then re-form as close to the original state as possible, creating one whole voice.
Abstract: On these days, the Internet is used for multimedia applications, such as streaming audio and video to users. There is also great interest in delivering conversational voice to Internet users. As users, will expect the same services to be available on the wireless Internet as they enjoy on the wired Internet, it is important showing that mobility schemes can support multimedia applications. Indeed, it can be argued that for data applications such as web browsing, it is mostly acceptable to re-establish a session when a user moves between networks, as data requests are typically separated by a couple of seconds. However, this is not acceptable in multimedia applications. In this thesis, try to a handover scheme for a simulated voice application is presented based on a modified version of the Stream Control Transmission Protocol (SCTP). Multimedia applications are sensitive to delay, so SCTP was modified to monitor the available networks and to transport data over the network with the lowest delay and learn about on the jitter and latency performance of wired voice over internet protocol (VOIP). The performance of voice communication over wired connections is done using NS-2 simulator.
This process compresses the voice signal and then decompresses the signal for the receiver. Wired networks exist between a number of devices connected to each other using connecting media, such as cables and routers. Wired networks can be applied within an area limited by the cables and routers that allow for sending and receiving data. A communication network topology refers to the schematic representation of switching elements, routers, transmission links and other peripherals. It acts as a layout for a communication network which exists in real time scenario. Network topologies can be classified into two types based on the layouts: 1. Physical network layout 2. Logical network layout Physical network layout is the actual layout of computer cables, routers, and other network devices. Logical network layout is the way in which network appears to the devices in use. Commonly used topologies are bus, ring, and star. The analysis of a sophisticated network becomes difficult as there is a hectic calculation involved at each and every node spaced at a 100-200 km interval. The next section provide an overview of SCTP (stream control transmission protocol)
Keywords: VoIP, SCTP, wired LAN, Ns2.
1. INTRODUCTION Voices over Internet Protocol (VoIP) allow users to make calls and receive calls by connecting through internet protocols to deliver voice data. The reasons behind growing popularity of VoIP include; low cost, efficient bandwidth, and flexibility over Public Switched Telephone Network (PSTN). VoIP operates by transferring voice signals between IP addresses, which means that those signals have to transform into pieces of data small enough to transmit. Vocals samples from the sender are broken down into voice “packets”, which are given routing information and sent to the receiving end.
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2. SCTP OVERVIEW The SCTP is a reliable transport protocol operating over a connectionless packet switched network, such as IP. SCTP emerged from the need for telecommunications companies
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