Method for securing cables in duct or pipe system

The invention relates to a method for securing cables in a duct or pipe system for flowing media, such as gas, waste water, rain water or mixed water. The invention concerns a method for securing cables or elongate hollow sections in duct or pipe systems for flowing media, and a cable network in a duct or pipe system. The cable or elongate hollow section to be laid is anchored by high-tensile-strength elements between anchoring points. The high-tensile-strength element may be a separate element or an element incorporated in the cable sheath or in the hollow section. Furthermore, the invention concerns the reduction of sags.