The Internet is a global network of close to 100 million people. It provides a vast range of telecommunication services, including electronic mail, the World Wide Web, and more recently, telephony. With appropriate software that can be downloaded free, users who are logged onto the Internet can talk to each other anywhere in the world at no additional cost. Recently, some companies have started services that allow such users to even talk to people who do not have an Internet connection, but only a regular phone, at a cost far below regular long ....etc

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Introduction

If you've never heard of Internet Telephony, get ready to change the way you think about long-distance phone calls. Internet Telephony, or Voice over Internet Protocol, is a method for taking analog audio signals, like the kind you hear when you talk on the phone, and turning them into digital data that can be transmitted over the Internet.
How is this useful? Internet Telephony can turn a standard Internet connection into a way to place free phone calls. The practical upshot of this is that by using some of the free Internet ....etc

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IP Telephony

If you've never heard of Internet Telephony, get ready to change the way you think about long-distance phone calls. Internet Telephony, or Voice over Internet Protocol, is a method for taking analog audio signals, like the kind you hear when you talk on the phone, and turning them into digital data that can be transmitted over the Internet.
How is this useful? Internet Telephony can turn a standard Internet connection into a way to place free phone calls. The practical upshot of this ....etc

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Communication via packet and data networks such as IP, ATM, Frame Relay has become a preferred strategy for both corporate and public networks. Experts predict that data traffic will soon exceed telephone traffic if it already hasnâ„¢t. As a result of this there has been considerable interest in transmitting traditional telephone traffic over data
networks. Internet Telephony is a powerful and economical communication options. It is a general term for the technologies that use the Internet Protocol's pac ....etc

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Abstract
LEO is Low Earth Orbit satellite.It circulates on a lower orbit in a shorter period . Additionally LEO systems try to ensure a high elevation for every spot of the earth to provide a highquality communication page link . The networks will play an important role in the evolving information infrastructure . It provides communication with shorter endto- end delays and e_ciency frequency usages . Some problems need to be solved before LEO satellite system can be successfully deployed . One of these problems is handover management . Even ....etc

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The limitations of the circuit-switching techniques of conventional telephony may now be overcome through integration with IP technologies. Internet Telephony is a powerful and economical communication option by combination of the telephone networks and data networks. IP telephony used to send audio, video, fax etc between two or more users in real time via packet switched network. The main motivation of IP telephony is Cost savings and ease of developing and integrating new services. Four type of IP telephon ....etc

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Packet Telephony

Packet Telephony consists of telephony and data tightly coupled on packet based switched multimedia networks. The packet telephony simply refers to the use of personal computers and a packet data network to produce a voice conversation. The goal of packet switched fabric in both LAN and WAN, the vision in to drive voice and data over a single multimedia (packet based N/W) allowing waves to engage in a media rich communication in a natural and straight-forwarded manner. The packet & based fabric is capable of supporting futur ....etc

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Internet Telephony

Voice and data transmission are fundamental aspects of the information age we live in. yet until recently we have relied on very different networks to deliver voice and data. As a result, the ways in which we interact with these networks are far from seamless. Voice over IP packet (VoIP) is just beginning to deliver on the promise of integrated voice and data services. This convergence of services will allow us to work more efficiently and powerfully than over before. Voice over IP packet (VoIP) networks are integrated mul ....etc

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Internet Telephony Policy in INDIA

The Internet is a global network of close to 100 million people. It provides a vast range of telecommunication services, including electronic mail, the World Wide Web, and more recently, telephony. With appropriate software that can be downloaded free, users who are logged onto the Internet can talk to each other anywhere in the world at no additional cost. Recently, some companies have started services that allow such users to even talk to people who do not have ....etc

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