Resilient floor for communication passage bellows

The floor (2) has undulating raised edges (21) at its transverse ends, and transverse ribs at its bottom surface. Metal reinforcements are embedded to the transverse ribs, and have ends that protrude beyond the transverse ribs. The ends of the metal reinforcements are fixed to fastening devices, to fix the floor to a bellows (1). The fastening devices extend alongside the exterior of the raised edges. An independent claim is also included for a corridor connection.