Presented By:-Kundan Kumar PandeyEnroll :-100860116022B.E. 3rd Year(I.T.)

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INTRODUCTION DIFFERENT TYPES WHAT IS H.323 H.323 COMPONENTS H.323 CALL ESTABLISHMENT H.323 CONTROL SIGNALING FLOW H.323 MEDIA STREAM & MEDIA

CONTROL FLOW H.323 CALL RELEASE CONCLUSION

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Internet telephony uses the Internet protocol to send audio, video an data between two or more users in the real time.

IP telephony is the integration of voice and data networks, services, and applications.

The main motivation of development of IP Telephony is the cost saving & integrating new services.

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Vocaltec introduced the first Internet telephony software product in early 1995. Running a multimedia PC, the Vocaltec Internet Phone.

In 1996, Vocaltec with an Intel Company announced to produce the first IP telephony gateway.

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PC to PC Phone-to-phone over IP PC-to-Phone Phone-to-PC

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The H.323 standard for the transmission of real-time audio, video, and data communications over packet-based networks based on IP telephony.

H.323 is a standard produced by the ITU-T Study Group 16.

Currently the most widely-supported IP telephony signaling protocol.

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Terminals Gateways Gatekeepers Multipoint Control Units (MCUs)

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Terminals :H.323 terminal can either be a personal computer or a stand-alone device, running an H.323 and the multimedia applications.

Gateways :An H.323 gateway provides connectivity between an H.323 network and a non-H.323 network.

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Address Translation Admission Control Bandwidth Control Zone Management Call-Control Signaling Call Authorization Call Management

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MCUs provide support for conferences of three or more H.323 terminals. All terminals participating in the conference establish a connection with the MCU.

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Internet telephony is cost savings and integrating new services.

Internet Telephony is a powerful and economical communication options by combination of the telephone networks and data networks.

Many public telecommunication operators are establishing their own IP telephony services, and using IP-based networks as alternative transmission platforms.

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