This series of part 2 of the European Standard EN 50290 common design rules and construction requirements for materials used for communication cables. Part 2 of EN 50290 consists of the following parts: Part 2-20 - General; Part 2-21 - PVC insulation compounds; Part 2-22 - PVC sheathing compounds; Part 2-23 - PE insulation; Part 2-24 - PE sheathing; Part 2-25 - Polypropylene insulation compounds; Part 2-26 - Halogen free flame retardant insulation compounds; Part 2-27 - Halogen free flame retardant thermoplastic sheathing compounds; Part 2-28 - Filling compounds for filled cables; Part 2-29 - Cross-linked PE insulation compounds; Part 2-30 - Poly(tetrafluoroethylene-Hexafluoropropylene) (FEP) insulation and sheathing. The different parts include specific requirements for materials used for communication cables. (remainder of paragraph deleted in view of DE comments agreed to)