The thesis describes the individual steps of writing a detailed expert report to enter the broadband network of electronic communications in the municipality of Krško into ZK GJI. It begins by presenting the legal regulations covering the recording of data into ZK GJI. That is followed by a decription of the manner of recording buildings and networks of electronic communications, the recommended location accuracy and the methods of measurement (classic and GNSS methods of measurement). That is followed by a description of used measuring apparatus, the actual software used and the ways of processing the data and entry into ZK using the programme module Infra 2. The thesis concludes with a presentation of the contents of the detailed expert report for entry into ZK GJI and of the documents neccessary to forward the captured data to the Surverying and mapping authority of the Republic of Slovenia.