dtac proposes to implement New Convergent Billing System which provides convergent rating and charging capabilities for prepaid and post paid subscribers. Currently dtac has in house billing system for their post paid subscribers and Charge@Once for prepaid subscribers.
dtac provides different self care services to the prepaid subscribers through UMB  (UMB). UMB integrates with USSD gateway. Currently USSD gateway integrates (directly or through other intermediate systems) with billing and prepaid systems to provide prepaid self care services. After implementation of New Convergent Billing System, USSD gateway will integrate with CBS to provide self care services for prepaid subscribers.

Oracle WebLogic 10.3/12c, MSSQL, Hibernate/JPA, Log4J, EJB, Web Service, XML, SVN, Oracle Workshop IDE, Oracle JDeveloper IDE, jMeter, Diameter Credit Control (DCC)