The riser belongs to the building cabling and is implemented in the structured cabling with fiber optic cables or optionally with TP cables.
The riser is an installation segment for connecting the building distribution board(BDSD) with the floor distribution boards(FDSD). In the case of a fiber optic riser, it is the fiber optic building distributor(GF-GV) and a fiber optic floor distributor, which also works as a fiber optic collection pubnct. In the cabling standard, this secondary section is specified with a maximum length of 500 meters.
The risers are laid in an empty shaft that connects the individual floors of a building with each other.