USSD Service Center enables wireless operators to offer fast and interactive messaging services through the USSD feature of GSM networks. It is a flexible Unstructured Supplementary Service Data (USSD) gateway for service providers, MVNOs and wireless operators to offer USSD-based applications and services to both prepaid and postpaid mobile subscribers. USSD SC features a network interface to send and receive USSD messages while maintaining application/service connectivity. Its web services interface provides developers a simple but robust framework for bringing new applications and services to life. Through its intuitive service creation facilities, it presents operators a graphical user interface to design and launch new menu structures. It can also reduce customer care costs by allowing users to “self-care”, cutting down investment in call centers and preserving network resources for billable voice calls. USSD SC also enables mobile operators to offer interactive services to the enterprise segment, including banking, e-government, transportation, and health care. USSD technology is far more cost-effective than a live help desk or IVR technology. With the dial of a simple short code, it allows companies to offer quick, simple and interactive access to enterprise services, such as account balance checks, customer service, flight schedules and booking status, and order status from any GSM handset.