Telecommunication Network Topology
There are some basics of topology, or the structure of the network, the telecommunications network. Three basic topologies used in WAN. And LAN. Stars networks, binds to the end user's computer, to a central computer. Ring networks, binds local computer processors, the ring, with a more equal basis. Bus Network, is a network, which uses local processor bus with, or communication channels together. Variations ring network, is Mesh Network, which uses a direct communication channel to interconnect some or all of the computers in the ring.
Network client / server, it can use a combination approach star, ring, and bus. Clearly, more centralized star network, while the ring and bus networks, has a decentralized approach. However, it is not always the case, for example a computer center in a star configuration, can act as a switch, or computer modifiers messages, which regulates data communications anatar autonomous local computer. Network Star, Ring, and Bus, differ in terms of performance, reliability, and cost. Pure star network, considered to be reliable as a ring network, since other computers in the ring, relying on a central computer. If the central computer is damaged, there is no communication capabilities and backup processing and local computer is disconnected. This situation is usually resolved ddengan put multiprocessor architecture, which has the ability to tolerate faults.
Protocols and Network Architectures
Until a moment ago, there is a lack standards for interfaces, including hardware, siftware, and communication channels of the telecommunications network. The situation has hindered the use of telecommunications, increases costs, and reduces the efficient and effective. In response, national and international telecommunications manufacturers, has developed standards called protocols, and a master plan called the network architecture, to support the development of data communications network, which is more reliable.
Protocols are the rules and procedures for controlling the communication in the network. Each device manufacturing has different protocols, therefore it is necessary for a standard as I would have to say the following after this.
Network architecture; purpose network architectures, is to Promote an open telecommunications environment and a simple, flexible, and efficient. This is done using standard protocols, interfaces, software, hardware and communications standards, and standard multilevel interface design, between the end user and computer systems.
International Standards Organisation (ISO) has developed a model of seven layers, the Open Systems Interconnection (OSI), to become the standard model for network architecture. The division of data communications functions into seven (7) different layers, encourages the development of modular network architecture, which helps the development, operation, and maintenance of telecommunications networks, complex.
TCP / IP Internet Models
Internet protocol telecommunications systems, which have been widely used, so it is now accepted as the network architecture. Package internet protocol called Transmission Control Protocol / Internet Protocol, which is abbreviated as TCP / IP. TCP / IP consists of 5 (five) layer protocol that can be connected to the 7 (seven) layers in the OSI architecture. TCP / IP is used by the Internet and all intranet and extranet. Many companies, and other organizations, changing wide area networks, and client / server, the TCP / IP technology, which is now often referred to, IP networks.