+ E2_TERM_KEEP_ALIVE_REQ = C.E2_TERM_KEEP_ALIVE_REQ
+ E2_TERM_KEEP_ALIVE_RESP = C.E2_TERM_KEEP_ALIVE_RESP
+ RIC_E2_SETUP_REQ = C.RIC_E2_SETUP_REQ
+ RIC_E2_SETUP_RESP = C.RIC_E2_SETUP_RESP
+ RIC_E2_SETUP_FAILURE = C.RIC_E2_SETUP_FAILURE
+ RIC_SERVICE_QUERY = C.RIC_SERVICE_QUERY
+ RIC_SERVICE_UPDATE = C.RIC_SERVICE_UPDATE
+ RIC_SERVICE_UPDATE_ACK = C.RIC_SERVICE_UPDATE_ACK
+ RIC_SERVICE_UPDATE_FAILURE = C.RIC_SERVICE_UPDATE_FAILURE