USSD CALL FLOW PDF

Different handsets handle the notification differently, but most handsets will beep and display the text sent to it by the application. This information could even be a menu to which the user may respond. USSD Push is used for applications such as subscriber surveys, payment verification and even mobile marketing. The handset recognises such numbers and will use the USSD bearer instead of a voice call.

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Uses[ edit ] When a user sends a message to the phone company network, it is received by a computer dedicated to USSD. Messages sent over USSD are not defined by any standardization body, so each network operator can implement whatever is most suitable for its customers.

USSD can be used to provide independent calling services such as a callback service to reduce phone charges while roaming , enhance mobile marketing capabilities or interactive data services. On some pay as you go networks, such as Tesco Mobile , once a user performs an action that costs money, the user sees a USSD message with his or her new balance.

Some operators use USSD to provide access to real-time updates from social-networking websites like Facebook and Twitter. The user sends a request to the network via USSD, and the network replies with an acknowledgement of receipt: "Thank you, your message is being processed. A message will be sent to your phone. There is no store-and-forward capability, as is typical of other short-message protocols like SMS. In other words, an SMSC is not present in the processing path.

Groups of digits may be separated by additional asterisks. The message is terminated with a hash symbol.

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USSD call flows

Uses[ edit ] When a user sends a message to the phone company network, it is received by a computer dedicated to USSD. Messages sent over USSD are not defined by any standardization body, so each network operator can implement whatever is most suitable for its customers. USSD can be used to provide independent calling services such as a callback service to reduce phone charges while roaming , enhance mobile marketing capabilities or interactive data services. On some pay as you go networks, such as Tesco Mobile , once a user performs an action that costs money, the user sees a USSD message with his or her new balance. Some operators use USSD to provide access to real-time updates from social-networking websites like Facebook and Twitter. The user sends a request to the network via USSD, and the network replies with an acknowledgement of receipt: "Thank you, your message is being processed.

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Unstructured Supplementary Service Data

Provides much higher speed than its previous generation which is 3G. LTE is the data only network. On LTE all services will be on data network. This will be after full implementation of IMS. IMS is for deploying multimedia services over IP network. If the network does not support IMS, the roaming network does the fall back to 3G. Which attaches the phone.

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USSD Call Flow

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