Mandates a solution that is not DLMS COSEM derived but where there are DLMS COSEM equivalent in the specification
For Devices other than ESME and CHF, the GBCS requires functionality equivalent to DLMS COSEM classes but does not use DLMS COSEM classes (rather ZSE / ASN.1 is used).
For Devices other than ESME and CHF, the GBCS requires support for equivalents of the Green Book’s access and data notification services, but uses ZSE or ASN.1 specific structures.
For all Devices, the GBCS requires that the management of X.509 certificates and Device’s key pairs is undertaken using ASN.1 messages derived from the IETF’s TAMP RFCs.
Over the HAN, the GBCS mandates, for all Devices, the use of ZSE for the communication layers below the DLMS/COSEM Application Layer and so does not allow the use of the equivalent Green Book communication profiles. (WAN transport is outside GBCS scope).
For ESME and GSME, distribution of firmware is through the ZSE OTA mechanism.