IEC 62056-8-4:2018 specifies DLMS/COSEM communication profiles for narrow-band OFDM power line carrier PRIME neighbourhood networks using the modulation as specified in Recommendation ITU-T G.9904:2012.
Three communication profiles are specified:
• a profile using the IEC 61334-4-32 LLC layer,
• a profile using TCP-UDP/IPv4,
• a profile using TCP-UDP/IPv6.