In diploma thesis is theoretically described structure of PDH, SDH and multiplexing of PDH to SDH. Measurement of first level PDH and SDH is described too. A design of new laboratory network was based on theoretical information and the network was build. SDH nodes MSH11CP and other equipment in laboratory entourage are used in new laboratory network in a way that laboratory network is the most similar to real telecommunication network. Operation manual for SDH nodes type MSH11CP is described next in the thesis. New three laboratory tasks are described in the thesis. These tasks make use of design of new network and a reference of nodes operation manual. New three tasks are implemented in new laboratory network, in laboratory of transmission technologies. In these new laboratory tasks are possible to create a transmission path and measure this service, including settings and verification of a backup path.