Next Generation Network (NGN) is a packet-based network able to provide Telecommunication Services to users and able to make use of multiple broadband, QoS-enabled transport technologies and in which service-related functions are independent of the underlying transport-related technologies. It enables unfettered access for users to networks and to competing service providers and services of their choice. It supports generalised mobility which will allow consistent and ubiquitous provision of services to users. Bharat Sanchar Nigam (BSNL) for the first time in India launched range of Next Generation Network (NGN) services such as video telephony, video surveillance and mobile advertising services.Voice over Internet Protocol will provide a long awaited video calling and video conferencing services to the people of India.
NGN Architecture: The NGN architecture as defined by the ITU and ETSI borrows heavily from the work done by 3GPP. The diagram below shows the architecture that has been defined for the NGN in ITU-T Rec. Y.2012. NGN architecture supports the delivery of multimedia services and content delivery services, including video streaming and broadcasting. An aim of the NGN is to serve as an PSTN and ISDN replacement. The NGN architecture defines a Network-Network Interface (NNI), User-Network Interface (UNI), and an Application Network Interface (ANI). The Transport stratum provides IP connectivity services to NGN users under the control of Transport control functions, including the Network Attachment Control Functions (NACF) and Resource and Admission Control Functions (RACF).
Advantages of NGN based Services:
1. One infrastructure is required.
2. One backbone for voice and data services instead of two parallel ones.
3. No maintenance of proprietary switching systems.
4. Fewer call controlling entities in the network so less capital and operating cost.
5. Easier configuration of equipment.
6. Fast advanced and new services deployment is possible.
NGN Architecture: The NGN architecture as defined by the ITU and ETSI borrows heavily from the work done by 3GPP. The diagram below shows the architecture that has been defined for the NGN in ITU-T Rec. Y.2012. NGN architecture supports the delivery of multimedia services and content delivery services, including video streaming and broadcasting. An aim of the NGN is to serve as an PSTN and ISDN replacement. The NGN architecture defines a Network-Network Interface (NNI), User-Network Interface (UNI), and an Application Network Interface (ANI). The Transport stratum provides IP connectivity services to NGN users under the control of Transport control functions, including the Network Attachment Control Functions (NACF) and Resource and Admission Control Functions (RACF).
Advantages of NGN based Services:
1. One infrastructure is required.
2. One backbone for voice and data services instead of two parallel ones.
3. No maintenance of proprietary switching systems.
4. Fewer call controlling entities in the network so less capital and operating cost.
5. Easier configuration of equipment.
6. Fast advanced and new services deployment is possible.
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