Assessing Readiness of IP Networks to Support Desktop Videoconferencing Using OPNET

OPNET is a powerful network design and simulation tool that has gained popularity in industry and academia. However, there exists no known simulation approach on how to deploy a popular real-time network service such as videoconferencing. This paper demonstrates how OPNET can be leveraged to assess the readiness of existing IP networks to support desktop videoconference. To date, OPNET does not have built-in features to support videoconferencing or its deployment. The paper offers remarkable details on how to model and configure OPNET for such a purpose. The paper considers two types of video traffic (viz. fixed and empirical video packet sizes). Empirical video packet sizes are collected from well-known Internet traffic traces. The paper presents in-depth analysis and interpretation of simulation results and shows how to draw proper engineering conclusions

Assessing Readiness of IP Networks to Support Desktop Videoconferencing Using OPNET

OPNET is a powerful network design and simulation tool that has gained popularity in industry and academia. However, there exists no known simulation approach on how to deploy a popular real-time network service such as videoconferencing. This paper demonstrates how OPNET can be leveraged to assess the readiness of existing IP networks to support desktop videoconference. To date, OPNET does not have built-in features to support videoconferencing or its deployment. The paper offers remarkable details on how to model and configure OPNET for such a purpose. The paper considers two types of video traffic (viz. fixed and empirical video packet sizes). Empirical video packet sizes are collected from well-known Internet traffic traces. The paper presents in-depth analysis and interpretation of simulation results and shows how to draw proper engineering conclusions

Assessing Readiness of IP Networks to Support Desktop Videoconferencing Using OPNET

OPNET is a powerful network design and simulation tool that has gained popularity in industry and academia. However, there exists no known simulation approach on how to deploy a popular real-time network service such as videoconferencing. This paper demonstrates how OPNET can be leveraged to assess the readiness of existing IP networks to support desktop videoconference. To date, OPNET does not have built-in features to support videoconferencing or its deployment. The paper offers remarkable details on how to model and configure OPNET for such a purpose. The paper considers two types of video traffic (viz. fixed and empirical video packet sizes). Empirical video packet sizes are collected from well-known Internet traffic traces. The paper presents in-depth analysis and interpretation of simulation results and shows how to draw proper engineering conclusions

Perhitungan Kesiapan Jaringan IP dalam Mendukung Aplikasi Konferensi Video Berbasis Desktop Menggunakan OpNet

Artikel ini menunjukkan bagaimana OPNET dapat dimanfaatkan untuk menilai kesiapan jaringan IP yang ada untuk mendukung konferensi video berbasis desktop. Sampai saat ini, OPNET tidak memiliki fitur built-in untuk mendukung konferensi video. Tugas akhir ini memodelkan sebuah perusahaan dengan tiga lantai, dimana setiap lantai terdapat subnet. Tugas akhir ini mempertimbangkan dua jenis traffic video, yaitu ukuran paket video tetap dan sebenarnya. Dari hasil uji simulasi dapat diketahui jumlah sesi konferensi video yang dapat didukung oleh jaringan IP dengan mempertimbangkan batas bandwidth dan delay. Skenario kedua mempunyai traffic video yang terkirim dalam pps lebih besar 0,0514% dari skenario pertama. Sedangkan untuk traffic suara yang terkirim dalam pps pada skenario pertama lebih besar 1,7149% dari skenario kedua. Skenario kedua mempunyai traffic video yang terkirim dalam Bps lebih besar 4,9646% dari skenario pertama. Sedangkan untuk traffic suara yang terkirim dalam Bps pada skenario pertama lebih besar 0,2547% dari skenario kedua. Sesi konferensi video yang didukung jaringan dengan dibatasi bandwidth pada skenario kedua lebih besar 2,439% dari skenario pertama. Sedangkan sesi konferensi video yang didukung jaringan dengan dibatasi delay pada skenario kedua lebih besar 4,7619% dari skenario pertama

End to End Delay Performance Analysis of Video Conferencing over LTE

Mental development to use the data, such as multimedia, video and online games led to the development of a technique called LTE long term evolution. The goal of this paper is to analyze the quality of service (QoS) performance and its effects when video is streamed over LTE .Using OPNET (Optimized Network Engineering Tool). the performance can be simulated having Different scenarios for video conferencing . in addition to we also measured the performance of packet End-to-End delay

Java Based Video Conferencing with Face Tracking

This paper addresses the issue of communication tools among employees in a big company. Choices of communication tools are listed down and videoconferencing is selected in this project. However videoconferencing is not a rare technology, where examples can be easily found on the internet. This paper has differentiated ordinary videoconferencing and videoconferencing with face tracking. The main advantage of using face tracking allows user to constantly showing his face while moving around during his presentation. Java is used as the programming language since Java has wide library on the internet for free. This paper also addresses the unnecessary of using external circuit when the program can be run by the computer itself

Prototipo para la Evaluación de Calidad de Servicio Mediante Técnicas de Encolamiento en Ambientes de Backbone

The cost in infraestructure and access to emerging technologies on telecommunications networks, made necessary to have a mechanisms the quality of service assessment using queuening based. Objective in this article was evaluate different technical modeled various scenes of campus backbone network, in order to compare his performance using the tool of simulation OPNET. The evaluation aimed to the measurement of keys variables in the performance networks like delay, packet loss and jitter, among others. Are show here the results once these were gotten from utilization mechanism when granting differentiation to sensitive traffics to present factors of congestion in IP networks, such like traffic in real time; collecting a significant improvement in the network performance.El costo en infraestructura y acceso a tecnologías emergentes en redes de telecomunicaciones, hizo necesario disponer de un planteamiento de evaluación de Calidad de Servicio utilizando mecanismos de encolamiento basado en simulación. El objetivo en este artículo fue evaluar diferentes técnicas de encolamiento modeladas bajo diversos escenarios de campus de redes backbone, para comparar su desempeño usando la herramienta de simulación OPNET. La evaluación apuntó hacia la medición de variables claves en el desempeño de la red como retraso, pérdida de paquetes y variación del retraso (jitter), entre otras. Son presentados aquí los resultados obtenidos en la utilización de éstos mecanismos al momento de otorgar diferenciación a tráficos sensibles a factores de congestión presentes en las redes IP, tales como tráfico en tiempo real; obteniendo un significativo mejoramiento en el desempeño de la red

Encaminhamento óptimo do tráfego em redes Triple Play

A Internet é responsável pelo surgimento de um novo paradigma de televisão – IPTV (Televisão sobre IP). Este serviço distingue-se de outros modelos de televisão, pois permite aos utilizadores um elevado grau de interactividade, com um controlo personalizado sobre os conteúdos a que pretende assistir. Possibilita ainda a oferta de um número ilimitado de canais, bem como o acesso a conteúdos de Vídeo on Demand (VoD). O IPTV apresenta diversas funcionalidades suportadas por uma arquitectura complexa e uma rede convergente que serve de integração a serviços de voz, dados e vídeo. A tecnologia IPTV explora ao máximo as características da Internet, com a utilização de mecanismos de Qualidade de Serviço. Surge ainda como uma revolução dentro do panorama televisivo, abrindo portas a novos investimentos por parte das empresas de telecomunicações. A Internet também permite fazer chamadas telefónicas sobre a rede IP. Este serviço é denominado VoIP (Voz sobre IP) e encontra-se em funcionamento já há algum tempo. Desta forma surge a oportunidade de poder oferecer ao consumidor final, um serviço que inclua os serviços de Internet, de VoIP e de IPTV denominado serviço Triple Play. O serviço Triple Play veio obrigar a revisão de toda a rede de transporte de forma a preparar a mesma para suportar este serviço de uma forma eficiente (QoS), resiliente (recuperação de falhas) e optimizado (Engenharia de tráfego). Em redes de telecomunicações, tanto a quebra de uma ligação como a congestão nas redes pode interferir nos serviços oferecidos aos consumidores finais. Mecanismos de sobrevivência são aplicados de forma a garantir a continuidade do serviço mesmo na ocorrência de uma falha. O objectivo desta dissertação é propor uma solução de uma arquitectura de rede capaz de suportar o serviço Triple Play de uma forma eficiente, resiliente e optimizada através de um encaminhamento óptimo ou quase óptimo. No âmbito deste trabalho, é realizada a análise do impacto das estratégias de encaminhamento que garantem a eficiência, sobrevivência e optimização das redes IP existentes, bem como é determinado o número limite de clientes permitido numa situação de pico de uma dada rede. Neste trabalho foram abordados os conceitos de Serviços Triple Play, Redes de Acesso, Redes Núcleo, Qualidade de Serviço, MPLS (Multi-Protocolo Label Switching), Engenharia de Tráfego e Recuperação de falhas. As conclusões obtidas das simulações efectuadas através do simulador de rede NS-2.33 (Network Simulator versão 2.33) serviram para propor a solução da arquitectura de uma rede capaz de suportar o serviço Triple Play de uma forma eficiente, resiliente e optimizada.Orientador: Paulo Nazareno Maia Sampai