Sunday, 20 March 2011

Discussion of IPTV

A telecommunications company IPTV service is usually delivered over a investment heavy walled garden network, which is carefully engineered to ensure bandwidth efficient delivery of vast amounts of multicast video traffic. The higher network quality also enables easy delivery of high quality SD or HD TV content to subscribers’ homes. This makes IPTV by default the preferred delivery platform for premium content. However, the investment for a telecommunications company to build an end-to-end telecommunications company IPTV service can be substantial.[original research?]

Broadcast IPTV has two major architecture forms: free and fee based. As of June 2006, there are over 1,300 free IPTV sources available.[34] This sector is growing rapidly and major television broadcasters worldwide are transmitting their broadcast signal over the Internet. These free IPTV sources require only an Internet connection and an Internet enabled device such as a personal computer, HDTV connected to a computer or even a 3G cell/mobile phone to watch the IPTV content. Various Web portals offer access to these free IPTV sources. Some cite the ad-sponsored availability of TV series such as Lost as indicators that IPTV will become more prevalent.

Because IPTV uses standard networking protocols, it promises lower costs for operators and lower prices for users. Using set-top-boxes with broadband Internet connections, video can be streamed to households more efficiently than current coaxial cable. Home networks currently use technology from the Multimedia over Coax Alliance, HomePlug Powerline Alliance or Home Phoneline Networking Alliance to deliver IPTV content to any set-top-box in a home, without having to install new Ethernet wires and without relying on wireless technologies like 802.11, which are not optimized for reliable delivery of video streams. ISPs are upgrading their networks to bring higher speeds and to allow multiple High Definition TV channels.

IPTV uses a two-way digital broadcast signal sent through a switched telephone or cable network by way of a broadband connection and a set-top-box programmed with software (much like a cable or satellite TV box) that can handle viewer requests to access to many available media sources.

Local IPTV, as used by businesses for audio visual AV distribution on their company networks is typically based on a mixture of:

   1. Conventional TV reception equipment and IPTV encoders
   2. IPTV Gateways that take broadcast MPEG channels and IP wrap them to create multicast streams.

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