24K Gold plated contacts avoid corrosion ensuring life time durability High quality 4-conductor ISDN extension cable To extend the length of ISDN Cable with RJ45 plugs Interconnected 1-1. suitable for all ISDN Devices 10.0 m 4-wire ISDN cable pin setting: 1-to-1: pin 3-3 / 4-4 / 5-5 / 6-6