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ORAN is based on xRAN.
Martin explained ORAN. Depends on whether SON is targeting O-DU, O-RU or Fronthaul.

Target is O-DU and O-CU. There are CCSDK projects with interface to O-RU for Fronthaul. But we can assume that all FM/PM/CM will
come via VES. In some cases messages are copied over to VES.

O-DU: FM would be VES message. Decision of whether to use VES 7.1 (FM domain) or VES 7.2 (generic domain or fault domain). 7.2 with fault domain will be translated to 7.1. Implementations are using generic domain.

Martin and Caludio recommend using VES 7.1 since there is a working implementation.

Re. alarm sequence, the intent is to sned an alarm clear message. However, there can be errors. So the software should be prepared to handle missing and repeated alarm_clear message. Similarly, the alarm message may or may not repeat.