Technical means used to deliver information include a variety of communications. They involve the use of facsimile, telephone, telegraph machines, computers equipped with modems, etc. All these devices make it possible to organize various types of communication. When transmitting information, the user does not know the methods that are used to carry out the session.
Traditional types of communication are divided into:
- postal (carrying graphic and alphanumeric information);
- telephone (transmitting voice);
- telegraphic (designed to carry alphanumeric messages);
- facsimile (facilitating the transmission of graphic and alphanumeric information);
- radio relay and satellite communications.
In this case, the methods of information transmission can be wired (telegraph, telephone, etc.), as well as wireless. In the second type of communication, in turn, separate groups are classified (radio, radio relay and satellite systems). Whereinspeech transmission, for example, is possible through almost any of the modes.
Modern types of communication are divided into:
-telephone;
-computer telephony;
-radiotelephone;
-systems of radiotelephone cellular communication;
- systems included in the Wi-Fi standard.
This type of communication, like telephone, is the most widely used and widespread. It is used not only for contacts between people, but also for more efficient management of enterprises, administrative buildings, as well as for financial and economic activities. Depending on the type of phone use, communication is divided into two main types:
-for general use (international, intercity and urban);
- internal, applied within only one organization.
In the technology of computer telephony, the main role is assigned to a personal computer. The use of this type of communication contributes to a significant acceleration of the process of operational management of the enterprise, while increasing the quality and efficiency of administration at a minimum amount of costs. The use of modern computer technologies makes it possible to reduce the amount for long-distance and international calls.
Such types of communication as radiotelephone use wireless systems in the process of transmitting information. This allows you to significantly reduce the costs incurred for the installation of expensive communications and their subsequent maintenance. This type of communication is very mobile and can bequickly organize in any locality. Currently, radiotelephony is an excellent alternative to wired telephony.
The reason for the emergence of cellular communications is the need to create an extensive network of radiotelephone mobile communications. Currently, this method of information transfer is used in more than one hundred and forty countries of the globe, on all continents.
Wi-Fi also belongs to modern wireless technologies. The principle of information transfer in this type of communication is based on the connection of a number of computers in a network or their connection to the Internet.
