Next generation network services is a term which used to describe about telecommunication communities or the services that they are providing with some innovations. These services include new circuit switched networks which are helpful for e VoIP, IPTV, presence-based applications, instant messaging and location-based functions. Some other important network services include
IP Network: as we all know networks are to provide communication services between computing devices for which they use certain communication protocols. Therefore we can say that an Internet Protocol network is a network of computer using Internet Protocol for their communication protocol. For each IP network an IP address is used which help in identifying particular network protocol working for purpose of network layer communication. These addresses are used in three different ways like host address, network address and broadcast address. A host’s IP address is the address of a specific host on an IP network, while the network address is the first IP address in the range of IP addresses and broadcast IP address is the last IP address in the range of IP addresses.
Multiservice networks: another service provide by next generation networks is multiservice networks. Today research us focusing on devising decentralized and distributed control system architecture for the management of internetworking systems to provide improved service delivery and network control. They have concluded that for better performance, utilization and fairness they need to adopt a value based control system. This system is multiservice networks where multiple control loops can be run on shared resources and achieve proportional fairness in their allocation, without a central control.
Virtual private networks: this is extend to a normal private network and help in public network to work like on internet. With help of this network service host of computer are enabled to send and receive that data across shared or a public network. With help of this system users can maintain functionality, security and management policies of the private network. Different classifications are used in a virtual private network including the protocols used to tunnel the traffic, the levels of security provided and whether they offer site-to-site or remote-access connectivity etc.
Optical networking technologies: in this network technology thin glass or plastic optical fiber is used to transmit information in the form of light pulses. It is far more reliable and offers greater transmission capacity than conventional copper-wire networks. It is some highly demanding networking solutions that enterprises are using today. With these optical technologies high-speed Ethernet connectivity and carrier interconnection is delivered with managed Storage Area Network (SAN) extension services.
Metropolitan optical networks : this is a computer network that usually spans a city or a large campus. In this network some interconnected computers work together with a high-capacity backbone technology, such as fiber-optical links, and provides up-link services to wide area networks and the Internet. Some other characteristics of this network service include it is used with TDM networks and designed for limited set of traffic types, interconnect a full range of client protocols from and Rapidly growing capacity demands and increasing variable traffic patterns.
Long haul optical networks : this refers to the transmission of visible light signals over optical fiber cable for great distances, especially without or with minimal use of repeaters. Normally, repeaters are necessary at intervals in a length of fiber optic cable to keep the signal quality from deteriorating to the point of non-usability. In long-haul optical systems, the goal is to minimize the number of repeaters per unit distance, and ideally, to render repeaters unnecessary.
In this fiber optic cable problems like loss inherent in the materials were solved by increasing the brilliance of the optical signal at the input end.