JSC "Dicto Citius" network nodes between the biggest cities of our country are connected with optical network. Access to the final user might be warranted via cooper, optical or wireless (licensed (26 GHz) or unlicensed (2,4 GHz or 5,4 GHz) frequency network, depending from customer demands and technical possibilities. The optical lines are used between cities, which might connect in different cities located object from 1 Mbps to 10 Gbps channels, which could transfer not only data, video and voice, but could combine companies telephones stations. The data transmission network in Dicto Citius is fully observed and is controlled twenty-four hours.