Real-time Transport Protocol (RTP)

As we all of us have experienced the advent of Voice over IP (VoIP) has given a new dimension to Internet and opened a host of new possibilities and opportunities for both corporate and public network planners. Many companies are seeing the value of transporting voice over IP networks to reduce telephone and facsimile costs.

Voice over Internet Protocol (also called IP Telephony, Internet telephony, and Digital Phone) – is the routing of voice conversations over the Internet or any other IP-based network. It was important to deal with challenges like interoperability, packet loss, delay, density, scalability, and reliability while adding voice to packet networks. The basic protocols being used at the network and transport layer have remained unchanged. This calls for the definition of new protocols, which can be used in addition with the existing protocols.

Real-Time Transport Protocol (RTP) is result of extensive research to meet the growing demands of industry and a common user. RTP usually used in conjunction with the RTP Control Protocol (RTCP). While RTP carries the media streams (e.g., audio and video) or out-of-band events signaling (DTMF in separate payload type), RTCP is used to monitor transmission statistics and quality of service (QoS) information. When both protocols are used in conjunction, RTP is usually originated and received on even port numbers, whereas RTCP uses the next higher odd port number.

For further information use the following recourses and comment if you have any questions or suggestions.

Books: Real-Time Transport Protocol (RTP)

Web Resources: : Real-Time Transport Protocol (RTP)
RealTime protocol news

Power Point File (PPT): Real-time Transport Protocol (RTP)

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  1. precise w

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  2. garys_m_i_t_h

    hey guys,

    I have just checked the page that James Whyte recommended, it definitely worth reading and has a good video that must be seen. Thank you, James.


  3. James Whyte

    I am using a telephone system, called Ozeki Phone System XE that uses this RTP protocol to transfer different data through the Internet netowrk. If you are a beginner like me, you can get more information here:

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