Complex sentence: Modern Axle Counter equipment transmits data from the trackside apparatus to the indoor equipment via telegrams, across an ISDN line, this results in the section of line being monitered showing occupied should persissting technical fault or loss of telegrams.
Split into simpler sentences: Modern axle counter equipment transmits data from the trackside apparatus to the indoor equipment via telegrams, across an ISDN line. This results in the section of line being monitored showing occupied in the event of persisting technical fault or loss of telegrams.