Telephony: history and evolution
IP Telephony: What, Why & Where?
q Adding interactive multimedia to the web
q Being able to do telephony on IP with a variety of devices
q Consumer & business markets
q Key element of convergence in carrier infrastructure
Basic IP telephony model
q Protocols: SIP, H.323, RTP, Coding schemes, Megaco
q Future: Invisible IP telephony and control of appliances
What is VoIP?
Why VoIP?
Where is VoIP Today?
What is VoIP?
q Telephony over IP standards bodies
q I ....etc

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INTRODUCTION
Internet Telephony can be defined as real time voice or mult-imedia communication over the internet or more generally over packet switched network. two telecommunication standardizations bodies are now used IP (session initiation protocol ) as basis to make wireless Internet telephony a reality in the context of third generation wireless telecom- munication network.Millions of highly mobile end-user who are frequently change their location will access Int ....etc

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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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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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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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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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