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This part of IEC 62056 specifies DLMS/COSEM communication profiles for transmitting metering data modelled by COSEM interface objects through a Local Data Transmission Interface (LDTI). The LDTI may be part of a meter or of a Local Network Access Point (LNAP) hosting a DLMS/COSEM server. The responsible committee is DKE/K 461 "Messeinrichtungen und -systeme für Elektrizität" ("Measuring devices and systems for electricity") of the DKE (German Commission for Electrical, Electronic and Information Technologies) at DIN and VDE.