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USSD [Unstructured Supplementary Service Data]

Posts: 29

Joined: 21 Oct 2010 16:17

03 Sep 2012 15:57

USSD [Unstructured Supplementary Service Data]

USSD [Unstructured Supplementary Service Data]

>> Unstructured Supplementary Service Data [USSD] is a protocol used by GSM cellular telephones to communicate with the service provider's computers

>> USSD can be used for WAP browsing, prepaid callback service, mobile-money services, location-based content services, menu-based information services, and as part of configuring the phone on the network

>> USSD messages are up to 182 alphanumeric characters in length

>> Unlike Short Message Service [SMS] messages, USSD messages create a real-time connection during a USSD session. The connection remains open, allowing a two-way exchange of a sequence of data. This makes USSD more responsive than services that use SMS

>> USSD can be also used to provide independent calling services such as a

Callback service (e.g. cheaper phone charges while roaming)

Enhance mobile marketing capabilities

Or interactive data service (e.g. stock quotes, sports results)]

>>USSD can be used by pre-paid GSM cellular phones to query the available balance. The vendor's "check balance" application hides the details of the USSD protocol from the user & To refill user's money balance on phone (SIM card to be exact). And to deliver One Time Passwords or PIN codes

>> USSD is sometimes used in conjunction with SMS: 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."); subsequently, one or more Mobile Terminated SMS messages communicate the status and/or results of the initial request. In such cases, SMS is used to "push" a reply or updates to the handset when the network is ready to send them; USSD is used for command-and-control only

>> A good example of USSD used in conjunction with SMS is the Buy Power platform by mHITs Limited. The platform allows subscribers to pay for prepaid electricity using their carrier airtime via Direct Mobile Billing

>> ETERNITY variants , VGB variants , VGFX variants support USSD feature