Performance Studies of Voice and Video Conferencing over ATM and Gigabit Ethernet Backbone Networks

2012 ◽  
Vol 3 (1) ◽  
pp. 22-32 ◽  
Author(s):  
Kashif Nisar ◽  
Nurul I. Sarkar ◽  
Yash Dole

This research paper compares two popular backbone network technologies – Gigabit Ethernet and Asynchronous Transfer Mode (ATM). ATM has been a popular choice for years for providing multimedia applications over the network effectively by making use of its features like Quality of Service (QoS). Gigabit Ethernet matches ATM’s functionality by providing higher bandwidth at lower cost, less complexity and easier integration into the existing Ethernet technologies. Hence, it becomes important to compare these two technologies against various network performance metrics to find out which technology performs better for what type of applications under what circumstances. This research paper will analyze and compare the performance of those two technologies based on the throughput, end-to-end delay for Voice and Video conferencing and jitter for the Voice applications. For this purpose, two different simulations were created, one for the Gigabit Ethernet and the other one for the ATM network, using the popular commercial and academic simulation software – OPNET modeler.

Author(s):  
Nurul I. Sarkar ◽  
Yash Dole

This chapter aims to report on the performance of voice and video traffic over two popular backbone network technologies, namely Gigabit Ethernet (GbE) and Asynchronous Transfer Mode (ATM). ATM networks are being used by many universities and organizations for their unique characteristics such as scalability and guaranteed Quality of Service (QoS), especially for voice and video applications. Gigabit Ethernet matches ATM functionality by providing higher bandwidth at much lower cost, less complexity, and easier integration into the existing Ethernet technologies. It is useful to be able to compare these two technologies against various network performance metrics to find out which technology performs better for transporting voice and video conferencing. This chapter provides an in-depth performance analysis and comparison of GbE and ATM networks by extensive OPNET-based simulation. The authors measure the Quality of Service (QoS) parameters, such as voice and video throughput, end-to-end delay, and voice jitter. The analysis and simulation results reported in this chapter provide some insights into the performance of GbE and ATM backbone networks. This chapter may help network researchers and engineers in selecting the best technology for the deployment of backbone campus and corporate networks.


2003 ◽  
Vol 02 (04) ◽  
pp. 683-692 ◽  
Author(s):  
DENNIS GUSTER ◽  
CHANGSOO SOHN ◽  
PAUL SAFONOV ◽  
DAVID ROBINSON

Technological advances such as high speed Ethernet and ATM have provided a means for business organizations to employ high performance networking. However, few studies have been conducted to verify the architecture's typical performance in a business environment. This study analyzed the network performance of high speed Ethernet and ATM when they were configured as LAN backbones. The results revealed that ATM exhibited performance superior to high speed Ethernet, but when adjustments were made for differences in line speed, the throughput was similar. In addition to analyzing empirical data about each technologies' performance, the advantages and limitations of using ATM in a business network are discussed.


Author(s):  
Dimitris Kanellopoulos

This chapter presents high-speed networking technologies and standards such as Asynchronous Transfer Mode (ATM), Fast Ethernet, 10 Gigabit Ethernet, Synchronous Optical Network (SONET), Resilient Packet Ring (RPR), Provider Backbone Transport (PBT), Provider Backbone Bridges (PBB), Transport - Multi Protocol Label Switching (T-MPLS) and Optical Transport Network (OTN). It considers the requirements imposed to high-speed networks by multimedia applications and analyses crucial issues of high-speed networking such as bandwidth problems, discarding policies and fast broadcast. Finally, the chapter discusses future trends in high-speed multimedia networking.


Author(s):  
Nurul I. Sarkar ◽  
Ritchie Qi ◽  
Akbar Hossain

Asynchronous Transfer Mode (ATM) is a high-speed networking technology designed to support real-time applications such as voice and video over both wired and wireless networks. This type of network is being used by medium-to-large organizations and the Internet service providers as backbone network to carry data traffic over long-distance with a guaranteed quality of service (QoS). The guaranteed QoS is achieved through a point-to-point link between end users. While the performance of ATM network over wired network has been studied extensively, the performance of real-time traffic over an ATM-Wireless extension has not been fully explored yet. It is useful to be able to compare the performance of ATM network with and without wireless extension against various network performance metrics to find out the effect of wireless extension on system performance.


2004 ◽  
Vol 8 (2) ◽  
pp. 135
Author(s):  
Flávia Oliveira Santos de Sá Lisboa

A tendência atual de integração de serviços de dados, voz e vídeo, estimulada pelo pleno sucesso da Internet, aumentou a demanda por maior banda e melhor desempenho nas redes de comunicação de dados. Neste contexto, a tecnologia ATM (Asynchronous Transfer Mode) vem sendo utilizada na implementação de backbone de LANs e WANs, justamente por oferecer a possibilidade de integração de serviços com qualidade, alta escalabilidade e altas taxas de transferência em banda larga. Neste artigo serão abordados os principais conceitos relacionados à tecnologia ATM, suas vantagens e desvantagens em face de outras tecnologias (como Fast e Gigabit Ethernet), além de casos de sua utilização em empresas e instituições de ensino.


Author(s):  
Vishal Chandra , Et. al.

In current computer communication network, it is overwhelmed by two technologies, in particular Asynchronous Transfer Mode (ATM) and Internet Protocol (IP). Association situated ATM is the awesome constant administrations which require ensured nature of-administration like video conferencing. Be that as it may, connectionless IP is more proficient than ATM for non-ongoing administrations like email. Right now, the significant exploration challenge is on the most proficient method to coordinate ATM and IP into a solitary network effectively. It is shown by the acknowledgment of the highlight of the A/I Net architecture: the A/I Switch. In this postulation, a VLSI execution of a multistage self-steering ATM switch texture which is one of the vital parts of the A/I Switch will be presented. The size of the switch model is 16x16. The chip is intended to work at the very least frequency of 100MHz and the framework is equipped for dealing with the OC-12 (622 Mbps) connect rate. In view of a piece cut architecture, the whole 16x16 switch is acknowledged utilizing four indistinguishable chips. It accomplishes elite by using dispersed control and accelerate with the input-output buffering technique. A need structure, which upholds four-level, permits the postponement delicate ATM cells to be switched with the briefest inertness. It likewise empowers the non-interleaving directing plan of IP cells.


2011 ◽  
Vol 6 (3) ◽  
Author(s):  
Charles Duncan ◽  
Martin Morrey ◽  
Gwen Bayne ◽  
Iain MacLaren ◽  
Patrick Walder ◽  
...  

In Scotland all 13 universities and a number (8) of other related institutions of higher education are connected on a high bandwidth computer network. Organizationally, this is composed of four interconnected Metropolitan Area Networks (MANs). The high bandwidth (155 Mbit/s) and the network's operation under ATM (Asynchronous Transfer Mode) enables routine use of high quality video-conferencing between institutions. Each institution has at least one (all the universities have two) video-conferencing suites, fully equipped with audio and video equipment and direct network access for PCs.DOI:10.1080/0968776980060302


IEE Review ◽  
1991 ◽  
Vol 37 (10) ◽  
pp. 357
Author(s):  
C.J. Hughes ◽  
A. (Gill) Waters

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