Technical regulations concerning international railway telephone circuits

Summary

This leaflet defines the elements used for international telephone communications and the rules to be observed in establishing international circuits. The technical characteristics of the analogue and digital transmission systems constituting these circuits are also specified. Reference is further made to specifications relating to line systems, such as the overhead line, cables and directional radio links. Finally, the maintenance procedures to be applied are dealt with.

NB :

There is also a reference, in point 2.3.4, to UIC Leaflet 911-4 "Standard provisions for modems and transmission lines used in data links with a binary throughput of 600 to 9 600 bits/s".