Geo-location of the commune of an IP user

This paper describes a system of geo-location of an IP user that would enable VoIP users to call 112. Basic requirement is fast (under 50 ms) determination of the commune of the subscriber. To obtain as accurate information as possible aggregation of several methods was proposed: using a database of locations of IP ranges created by specialized companies, traceroute and using history of the user locations to assume his current one. It is also explained how the concept described above was implemented and run on a testing platform along with the results of its operation. In the ending part of the article the directions of development were described.