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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.
USSD on a Sony Ericsson mobile phone (2005). Unstructured Supplementary Service Data (USSD), sometimes referred to as "quick codes" or "feature codes", is a communications protocol used by GSM cellular telephones to communicate with the mobile network operator's computers.
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.
• Fake email addresses - Malicious actors sometimes send from email addresses made to look like an official email address but in fact is missing a letter(s), misspelled, replaces a letter with a lookalike number (e.g. “O” and “0”), or originates from free email services that would not be used for official communications.
Report it. If someone asks you for a verification code, report the conversation to BBB Scam Tracker. If you think someone is impersonating your bank or another organization, contact them using a ...
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).
Former Westel; MNC has the same numerical value as the area code; [11] [2] UMTS shut down June 2022 [164] 216: 70: Vodafone: Vodafone Magyarország Zrt. Operational: GSM 900 / LTE 800 / LTE 1800 / LTE 2600 / 5G 700 / 5G 2100 / 5G 3500: MNC has the same numerical value as the area code; [11] [2] UMTS shut down Mar 2023 [165] 216: 71: upc ...
The bank would ask for the account number, the name on the check, the amount and the check number and just look up the account. Due to banks issuing privacy policies [ 8 ] [ 9 ] designed to protect identity and fraud, telephone merchant funds verification by calling the bank directly is now rare for any bank or credit union to offer this service.