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This article discusses the main indicators of the quality of the multiservice network, such as: delay; delay variation (jitter); number of packets with errors; number of lost packets. Not all types of traffic are sensitive to packet transmission delays, in any case, to the values of delays that are characteristic of multiservice networks. The purpose of this study is to assess the quality of the multiservice network using simulation. The analysis of network behavior when different types of traffic enter the network is performed: real-time traffic, data traffic and mixed traffic. The obtained data showed that the most critical to changes in the parameters of the multiservice network is such a quality indicator as the delay time, i.e. a slight change in network parameters significantly changes this quality indicator.