NF C44-056-31:2000 Electricity metering - Data exchange for meter reading, tarif and load control - Part 31 : use of local area networks on twisted pair with carrier signalling.
2000NF C44-056-31:2000 Electricity metering - Data exchange for meter reading, tarif and load control - Part 31 : use of local area networks on twisted pair with carrier signalling.
1993NF C44-107:1993 DATA EXCHANGE FOR METER READING, TARIFF AND LOAD CONTROL. LOCAL BUS DATA EXCHANGE. (EUROPEAN STANDARD EN 61 142).