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Friday, June 10, 2011

Telecommunication Network Components


Terminals

Terminals are the starting and stopping points in any telecommunication network environment. Any input or output device that is used to transmit or receive data can be classified as a terminal component. In the telecommunication system, the basic working model is like this, information in its original form, for example, audio, video and data, goes into the transmitter, the transmitter function is to convert such information into a media form, like electric signal or fiber optic signal, then the information will go through links and transmitted along a certain distance. At the other side of the link, the receiver will catch the transmitted signals, and transform it back into its original form (audio, video, and data).This is the basic model of telecommunication data transmission, which h is called a point-to-point work.

Data transmitter

The Universal Asynchronous Receiver/Transmitter (UART) controller is the key component of the serial communications subsystem of a computer. The UART takes bytes of data and transmits the individual bits in a sequential fashion. At the destination, a second UART re-assembles the bits into complete bytes. Serial transmission of digital information (bits) through a single wire or other medium is much more cost effective than parallel transmission through multiple wires. A UART i s used to convert t he transmitted information between its sequential and parallel form at each end of the link. Each UART contains a shift register which is the fundamental method of conversion between serial and parallel forms.

The UART usually does not directly generate or receive the external signals used between different items of equipment. Typically, separate interface devices are used to convert the logic level signals of the UART to and from the external signaling levels.

Telecommunications channels

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Our solution is used by companies which have a lot of divisions, such as office, department, regional representative office, production, warehouse, point of sales, gas station, shop etc.

Services for corporate sector:

· Corporate data networks construction

· Operative connection of remote branches to a corporate network

· Connection of terminal equipment (cash dispenses, POS-terminals, self-service terminals)

· Corporate IP-telephony organization

· Organization of systems of remote objects video observation

· Internet services

· Organization of videoconference communication between a main office and remote offices transmit the signals between the transmitter and the receiver.

Fiber-optic cables

Fiber-optic cables are increasingly used to bring faster and more robust connections to businesses and homes. An optical fiber (or fiber) is a glass or plastic fiber that carries light along its length. Fiber optics is the overlap of applied science and engineering concerned with the design and application of optical fibers. Optical fibers are widely used in fiber-optic communications, which permits transmission over longer distances and at higher bandwidths (data rates) than other forms of communications. Fibers are used instead of metal wires because signals travel along them with less loss, and they are also immune to electromagnetic interference. Fiber s are also used for illumination, and are wrapped in bundles so they can be used to carry images, thus allowing viewing in tight spaces. Specially designed fibers are used for a variety of other applications, including sensors and fiber lasers.

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