the flow of CU signaling and OMU portal signaling process The CU client signaling is directly connected to the SMU process.
Therefore, both the CU client logs and SMU logs need to be collected for locating CU client faults when network faults are excluded. As the service control unit, the SCU is closely related to the SMU. In most cases, both the SCU and SMU logs need to be collected.
The OMU portal is directly connected to the OMU process. The OMU process logs need to be collected when network faults are excluded.