. Ambient Mobile (Pty) Ltd - Small Messages Big Impact | Services / USSD


Unstructured Supplementary Service Data (USSD) is a technology unique to GSM. It is a capability built into the GSM standard for support of transmitting information over the signaling channels of the GSM network. USSD provides session-based communication, enabling a variety of applications.USSD is instead session oriented, unlike SMS, which is a store-and-forward, transaction-oriented technology. Turnaround response times for interactive applications are shorter for USSD than SMS because of the session-based feature of USSD, and because it is NOT a store and forward service.