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Chapter 9. Media Streaming > IP Transports and IP Multicast

9.3. IP Transports and IP Multicast

While IP multicast is not directly related to broadcasting, delivery of content via IP multicasting is rapidly becoming a critical capability [IPM]. As the penetration of cable modems and DSL lines increases, so does the need for, and value of, IP multicasting.

The IP multicast protocol enables simultaneously delivery of a single bit-stream to thousands of recipients. iTV content can be streamed, in push mode, via IP multicast to complement the high cost MPEG-based broadcast. IP Multicast delivers source traffic to multiple receivers without adding any additional burden on the source or the receivers (see Figure 9.5). Applications that take advantage of multicast include video conferencing, corporate communications, distance learning, and distribution of software, stock quotes, and news.


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