Calculated estimates of the computer network time parameters

Performed a detailed analysis of the time diagrams of the computer network functioning using the methods of message and packet switching. The article presents analytical expressions for calculating the main time parameters of information exchange, which have the greatest impact on the quality of user service. Some other parameters have been identified that have a significant impact on the quality of user service, but are more operational in nature and are defined by the protocols used. This includes the efficiency of communication channels use, the time spent on unproductive channel occupancy (information redundancy), etc. The materials of the article can be used by specialists, developers and network administrators, as well as for educational purposes.