Teletraffic and the queuing theory

The term ‘mass service theory’ introduced by A.Ya. Khinchin implies that the probability theory is applied to the studies of diverse problems of servicing which often are related to formation of queues. The problems of design and calculation of the communication networks and their elements are pivotal here. In the shop language of the communication community this domain of knowledge is called the teletraffic theory. The first publication of A.K. Erlang whose centenary is celebrated this year was devoted namely to this theory. It is not occasional that this jubilee is observed. Today the mankind has the worldwide communication network offering fabulous possibilities in information transmission, storage, and processing. Creation of such a network would not be possible without wide use of the teletraffic theory.