In this network, the Pierre-sur-Haute station, or FLYZ, was a relay between the Lachens (FNIZ) station to the south and the Mont-Août (FADZ) station to the north.
I dette netværk var Pierre-sur-Haute station, eller FLYZ, et relæ mellem Lachens (FNIZ) stationen mod syd og Mont-Août (FADZ) stationen mod nord.