USSD (Unstructured Supplementary Service Data)

USSD (Unstructured Supplementary Service Data) is a new GSM-based interactive data services when you use the phone keypad to enter some of the network has pre-established number or symbol such as * #, etc., then send that is, you can dial key to network sends a command, the network according to your instructions you need to choose the services available to you.AbstractDescribes the background and characteristics of USSD, and with the short message, GPRS and WAP compared discusses its feasibility in industrial applications and advantages, and to the successful operation of CLP fifty in Urumqi, the wireless remote monitoring system as an example , about the USSD application in the industrial system architecture, interfaces, protocols and communication processes.KeywordUnstructured Supplementary data service General Packet Radio Service Point to Point service provider China Mobile unstructured supplementary service data USSD (Unstructured Supplementary Service Data) is a global mobile communications system based on GSM (Global System for Mobile Communications) network, new type of interactive real-time online session data services; it is based on a subscriber identity module SIM (Subscriber Identity Module) card, the use of GSM network signaling channel to transmit data, in the GSM short message system technology based on the introduction of new business, business development capacity is far stronger than the SMS system. USSD technology used alone or with the current short message technology, general packet radio service GPRS (General Packet Radio Service) technology, can provide customers with a wide variety of value-added services such as mobile banking, finance stock trading, mobile phone bill inquiries, weather forecasting and information inquiries, send and receive e-mail, flight information, online booking, polls and so on. The use of USSD less impact on the structure of the original system, and operators can address the specific circumstances of the local network the flexibility to introduce functional business users to easily provide all kinds of mobile data services; another USSD can be used not only some of the information services, the use of mobile communications network operators, can also be applied industry-wide, USSD applications can monitor the communications industry greatly expanded the scope, functionality enhancements, cost reduction, so this business in Hong Kong, Singapore and other countries and regions have a wide range of applications in China have broad application prospects.