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This part of IEC 62056 specifies the DLMS/COSEM PLC S-SFK communication profile for neighbourhood networks. It uses standards established by IEC/TC 57 in the IEC 61334 series, Distribution automation using distribution line carrier systems and it specifies extensions to some of those standards. The responsible committee is DKE/K 461 "Elektrizitätszähler" ("Meters") of the DKE (German Commission for Electrical, Electronic and Information Technologies) at DIN and VDE.