IUC SMS & Voice operator billing knowledge Timely submit the Voice and SMS billing summary to Finance team for operator billing Timely close operator dispute issue with Finance team Ensuring to darts controls perform timely and time to time enhance the activity Coordination with technical and IT team for issue closer and new project implementation All regulatory agreements understanding BPM DBs submission Good knowledge of Service Path and Revenue Path of call flow and products TG/Node configuration SMS CLI knowledge Billing summary analyses