Indicators of the effectiveness of the use of automation systems (SA) to support infocommunications services

Administration of communication networks, according to the Law “On Communication”, is a set of organizational and technical measures aimed at ensuring the trouble-free and coordinated functioning of the communication network. Including traffic regulation, monitoring and control of the state of network elements, transport network channels and interactions of nodes, as well as managing the operation of applications and the provision of new infocommunication services. In this regard, this work is devoted to the study of the topic Indicators of the effectiveness of the use of automation systems to support infocommunications services


Introduction
The performance indicator is a quantitative characteristic of infocommunication systems (ICS), considered in relation to certain conditions of its functioning. When assessing the effectiveness of infocommunication systems, the characteristics of the labor activity of a person interacting with a computer and other technical means of the network are taken into account. Hence, the network is viewed as a man-machine system [1][2][3].
Indicators of the effectiveness of infocommunications are determined by the process of its functioning and are a functional of this process. In accordance with the specification of the concept of efficiency, the indicators of the set can be divided into three groups [4][5][6].

Materials and methods
The choice of indicators of the target efficiency of the network is determined by its purpose, in connection with which there is a large variety of indicators of the group. TI W -the effectiveness of the target indicator. With the help of these indicators, the effect (target result) is assessed, obtained by solving certain applied problems on the computer of the network (using general network resourceshardware, software, information). Various units of measurement are used to quantify this effect: precision p W , reliable r W and temporary t W indicators, for example, the probability of calculating a certain task and an estimate of the time to complete this task. Time factors of data transmission are characterized by the efficiency of the ICS network for assessing the target efficiency of infocommunication [17][18][19]. The efficiency of infocommunications is characterized by the likelihood that data from one network user to another will be delivered within a time period not exceeding a specified one where Q -the efficiency of the ICS; where 0 P -the probability that the network is free and there are no people waiting.
Probability of network states 0 P and 1 P calculated from the queuing theory by the formulas where N -the number of network workstations; y -network load; k -sequence of numbers  -the intensity of calls in the network (traffic).
The effectiveness of the target indicator of the ICS can be estimated by the mathematical expectation of a random variable of its state TI W , which is an indicator of the feasibility of using the network to perform the specified functions [1]   нз пр пр If the reliability and quality of the network are ideal, the target network performance is estimated from the queuing theory [3].

Technical performance results
With the help of indicators (2) -(4), the efficiency of the information technology system is assessed as a complex hardware-software-information system when it operates in various modes. At the same time, the effect obtained due to the implementation of the results of solving problems (satisfying the requests) of the users of the ICS is not taken into account.
Group indicators G W can be used to quantify the effectiveness of the entire network, its individual systems, subsystems, links, and nodes of the network. When processing an incoming call, the duration of the busyness of workstations (PC) is equal to the average proc  , then the probability that during this time it will be necessary to process n other calls is determined by the formula where  -the intensity of calls in the network; The calculation of the number of PCs is reduced to finding the minimum value , at which the probability of the system refusing to process the newly arrived call

The results of the efficiency of infocommunications
To assess the efficiency of the entire network or its individual elements and links, two groups of indicators can be used: integral and partial indicators.
With the help of integral indicators, the overall (total, integral) effect is assessed, and then the integral efficiency of infocommunication (element or network link), taking into account all capital and current (operating) costs, and all savings due to the use of infocommunications, that is, for all sources of direct and indirect savings and in all its types.
Private indicators are needed to assess the private economic effect (EE) obtained from individual sources of savings that are created when new hardware, software, information tools, or new technologies of infocommunications are introduced.
As an integral indicator of the economic efficiency of infocommunications, consider the indicator ann E -annual economic effect. The value ann E we define as the difference between the reduced costs associated with the creation, improvement, and operation of a certain system (the network as a whole, its individual elements, and links) for the basic and considered (investigated) options. As a generalized indicator of the economic efficiency of infocommunications, let us take the ratio of the given positive result of using infocommunications for a certain period of time [1] to the generalized costs of acquiring, installing, and operating infocommunications.
The generalized positive result of using infocommunications is where soc E -the social result of the introduction of infocommunications.
The reduced costs for the construction and operation of the system are equal co cc where cc С -costs for the acquisition, installation, and commissioning of the network; co С -the cost of operating the network; 0.15 is the standard payback ratio for recalculating one-time costs to one year. The cost of purchasing, installing, and commissioning infocommunications can be roughly estimated as [1]   where hsc C -the cost of the PC hardware and software complex;   A system is chosen as the basic one, which is similar (is a prototype) to the system under study in terms of purpose, structure, volume, and nature of the services provided. However, the basic system lacks the latest tools and technologies, the implementation of which increases its efficiency [20]. The considered (investigated) system differs from the basic use of the latest tools and technologies, the effectiveness of which should be assessed [12][13][14][15][16].
The indicated calculation of the reduced costs and the calculation of the annual economic effect can be carried out only in the simplest case, when capital investments are made not at a time, but during the service life of the system under study. This case is reduced to the simplest one using the reduction coefficients [6][7].

Conclusion
An assessment of the private economic effect of the introduction of new hardware, software, information tools, or new technologies for the operation of infocommunications is carried out in order to substantiate the economic feasibility of their implementation and compare competing options for the implemented tools and technologies. By particular indicators, since in some cases, these indicators are of decisive importance when choosing this or that option.