The riser cable is used for laying inside buildings in the section preceding the arrival at the user. Each fiber is individually reinforced with Kevlar. It is possible to choose it in two configurations of 12 fibers and 24 fibers of 900um depending on how many real estate units to be served and depending on the possibility of passing through the corrugated pipes existing in the vertical section of the building. CPR CLASS Cca, s3, d1, a3.