Coupling/decoupling assembly for unshielded and shielded high-speed communication lines The CNI 508N2 from AMETEK CTS is the first coupling/decoupling network available on the market to couple Surge onto shielded and unshielded high-speed communication lines with data rates up to 1,000MBit/s. Additionally, the CNI508N2 can be used as a coupling/decoupling network to apply Burst- as well as Surge pulses to unshielded symmetrical interconnection lines. The CNI 508 N2 meets the requirements according Figure 11 and Figure 12 to the standards IEC 61000-4-5 (Ed. 3.0 :2014).