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USSD is commonly used by prepaid GSM cellular phones to query the available balance. The vendor's "check balance" application hides the details of the USSD protocol from the user. 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 their new balance.
ETSI and 3rd Generation Partnership Project (3GPP) standards, such as GSM and LTE, define supplementary service codes that make it possible to query and set certain service parameters (e.g., call forwarding) directly from mobile devices.
Most common used USSD codes in INDIAN Operator networks " *141# - display's user's balance on the Vodafone network *111# - display's customer care on the Vodafone network *121# - display's user's balance on the Airtel,IDEA network *139# - INDIAN Railways passenger inquiry short-code on the all operators network.
In mobile telephony GSM 03.38 or 3GPP 23.038 is a character encoding used in GSM networks for SMS (Short Message Service), CB (Cell Broadcast) and USSD (Unstructured Supplementary Service Data).
Key takeaways. Check your balance online, on the phone, through your bank's mobile app, at the ATM and with bank statements. A bank teller can provide account details in person.
The reason why USSD is commonly used is because it enhances the WCDMA signalling and multiplexes the coherent signals. Types of applications. Balance Check: the user can send a Process Supplementary Service request (PSSR) to the home zone, which will forward this, under guidance from the gateway, to the correct application.
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The National Unified USSD Platform (NUUP), also known as the *99# service, is a platform that provides access to the Unified Payment Interface (UPI) service over the USSD protocol. Initiated by the Government of India and developed by the National Payments Corporation of India (NPCI), it facilitates access to banking services from mobile phones.