Technical provisions for the international interconnected Railway data transmission networks

Summary

The UIC Leaflet 917-1 sets out the technical characteristics of an international interconnected data transmission network together with the procedures governing integration of the various national networks in this international interconnected network.

There are several solutions used by the Railways:

One solution is based on the ITU-T X.75 Recommendation . The set of X.75 configuration values that must be respected in order to achieve international connectivity among data transmission networks is defined. The Leaflet specifies the addressing scheme based on Data Network Identification Codes (DNIC). Another solution is based on Internet Protocol (IP), where MPLS technology is applied. The procedure how the basic MPLS structure and configuration shall be achieved is defined in the Leaflet.