SMS and MMS store and forward messages independently of the user session, similar to the way email is sent over the internet. The difference between USSD gateways and other messaging gateways is that USSD gateways maintain a single interactive session once the connection is established. Unlike similar services ( SMS and MMS), which are store and forward based, USSD establishes a real time session between mobile handset and application handling the service.ĭifference between USSD and other gateways USSD messages travel over GSM signalling channels, and are used to query information and trigger services. USSD gateway is based upon the ability of the delivery agent or the source to send and receive USSD messages. A 'USSD gateway' service is also called a 'USSD center'. Functionality Ī USSD gateway routes USSD messages from the signalling network to a service application and back. A gateway is the collection of hardware and software required to interconnect two or more disparate networks, including performing protocol conversion. Unstructured Supplementary Service Data, or USSD is a communication protocol used by GSM cellular telephones to communicate with the service provider's computers. JSTOR ( March 2021) ( Learn how and when to remove this template message). Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification.
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