1. INTRODUCTION
1.1 Introduction
Changes in the structure of telecommunications industry and market conditions have brought new opportunities and challenges for network operators and public service providers. Networks that have been primarily focused on providing better voice services are evolving to meet new multimedia communications challenges and competitive pressures. Services based on ATM and other digital architectures provide the flexible infrastructure essential for success in this evolving market. Asynchronous Transfer Mode (ATM) is a target technology for meeting the Congestion Control requirements. In ATM networks, the information is transmitted using short fixed-length cells, which reduces the delay variance, making it suitable for integrated traffic consisting of voice, video and data. By proper traffic management, ATM can also ensure efficient operation to meet different quality of service (QoS) desired by different types of traffic.
1.2 Project description
This project deals with congestion control mechanism. When two ATM (Asynchronous Transfer Mode) Networks are communicating between each other and if we need to have successful communication between each other, then we have to use some congestion control technique so that the data loss will not take place. There are the different classes of service defined for ATM one of the services used here is ABR(Available Bit Rate) Service. ATM Available Bit Rate (ABR) service is intended to offer low cell loss for non real time data sources that can respond to closed loop flow control.
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Figure 1. Block diagram
In the ABR service, the source adapts its rate to changing network conditions, information about the state of t ...