The article describes the use of Grid technology in telecommunication systems and the creation of Grid telecommunication systems. Network service providers are focusing on huge consolidated data centers. Particular attention began to be paid to improving the methods of scheduling data processing tasks. The shortcomings of modern approaches to planning are considered. These include the inability to provide the maximum total priority of tasks performed at individual planning stages in distributed computing systems. The developed planning procedure is described. It overcomes this shortcoming. But at the same time, to reduce the total processing time of tasks in the system in comparison with the planning procedure based on solving the problem of the least coverage. The desire for the maximum sum of priorities of the selected tasks is the main criterion for selecting tasks from the queue, which we will characterize by the importance coefficient. The coefficient of preservation of importance and the coefficient of acceleration of the operation of the Grid system segment are described. The article also proposes a solution to improve the efficiency and quality of task servicing. It is proposed to expand the functionality of distributed telecommunication systems based on the use of computer clusters using Grid technologies.