Sunday, July 17, 2011

Next Generation Network(NGN)

Next Generation Network, also known as next-generation networks. The main idea is a unified network platform to provide unified management of multimedia services, integrating existing local fixed telephone, mobile phone, based on (collectively referred to as FMC), to increase multimedia data services and other value-added services. Which the exchange will use a soft voice switching technology, and the main implementation platform for IP technology, which the progressive realization of unified communications voip will be a focus of the next generation network. To emphasize the importance of IP technology, the industry's major companies Cisco (Cisco Systems) advocates called the IP-NGN.
Alexander Graham Bell invented the telephone, the telephone network, also based on voice transmission for the purpose of the loop switching technology is still in use. Opposed to it, the main purpose of data communication for the Internet-based information and communication, packet switching communications are gradually being used. 2000 until the first generation to voice-based communications network accounts have advantages. And now, because a lot of reasons for the increase of data communication, better cost savings and can also support the transmission of packet-switched voice transmission communication network gradually being used. Voice communications and data communications unified messaging combined first-generation network is given to use.
Internet, compared with the telephone network, simplicity and security is a weakness. Thus, the strengths of a collection of ip next-generation network NGN communication network there.
In addition to the above network, said telephone network, ip network, were also included broadcast network. To NGN-based streaming media services and broadcast services are to be standardized, combines the first two networks, "the integration of communications and broadcast network" is also being developed.
Basic Introduction
NGN is a packet network, including telecommunications services it offers, including a variety of business can take advantage of a variety of bandwidth and QoS capabilities with the delivery technology, business functions and the separation of the underlying transmission technology; it allows the user to a different service provider networks freedom of access, and supports generalized mobility, to achieve the business users to use the consistency and uniformity. It is based softswitch core, can provide, including voice, data, video and multimedia services, packet-based technology integrated open network architecture, represents a communication network development. NGN has a packet transmission, control functions from the host, call / session, application / business separation, separation of service provision and network to provide open interfaces, use of the basic building blocks of business, providing a wide range of services and applications, end to end QoS and transparent transmission capacity by an open interface specifications to achieve interoperability with traditional networks, Universal Mobile, allowing users to freely access the different service providers to support multiple sign systems, integration of fixed and mobile services, etc. characteristics.
Significance
From the sense, NGN is based on TDM-based PSTN voice network and IP / ATM packet network integration of the product, it makes the next-generation network for voice, video, data and other integrated services as possible. Can provide voice, data, multimedia and other services comprehensive, full and open broadband network platform system, at least to achieve gigabit fiber to the home. NGN can provide on the basis of the current network, including voice, data, multimedia and other services, but also the current low rates for long distance calls into local telephone IP telephony is expected to greatly reduce the cost of local call charges and prices.

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