A system and method for call selection and migration in a NG-CU over NGRAN is disclosed. The system and method comprises a CP VNFC assigning a call initiated by a user to a source user plane VNFC. A management VNFC detects an overload traffic condition upon receiving the assigned call by the source user plane VNFC from the CP VNFC. The source user plane VNFC selects the call to be migrated with a higher migration preference value to another VNFC and signals CP VNFC to initiate call migration. The CP VNFC then migrates the selected call through at least one GTP tunnel to a target user plane VNFC. The source user plane VNFC then forwards the target user plane VNFC a request to handle complete trafficking of the migrated call.