Txtnation offers a carrier-grade USSD API for high-speed interactive communication between mobile users and applications, compatible with over 90% of global GSM infrastructure. This service provides two main options: USSD notifications for one-time messages and interactive USSD menus, enabling various business applications such as banking and polling at a speed up to seven times faster than SMS. With high availability and reduced operating costs, Txtnation's USSD gateway is designed to enhance user experience and generate revenue.