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A vertical service code (VSC) is a sequence of digits and the signals star (*) and pound/hash (#) dialed on a telephone keypad or rotary dial to access certain telephone service features. [1] Some vertical service codes require dialing of a telephone number after the code sequence.
The post How to Factory Reset Your iPhone to Delete Everything on It appeared first on Reader's Digest. Before selling or recycling your old one, take these steps to protect your personal data.
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 (Unstructured Supplementary Service Data) codes [1] are mobile dial codes that can be used for communicating with the service provider's computers (i.e. 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).
Usually adds dial tone detection (preventing blind dial, and sometimes preventing ATO) X3: Usually adds busy signal detection. X4: Usually adds both busy signal and dial tone detection Z0 or Z: Reset Reset modem to stored configuration, and usually also physically power-cycles the modem (during which it is unresponsive).
AOL Dialer If you connect to the internet using your phone line (dial-up), it's recommended you install AOL Dialer for an optimal browsing experience. Add access phone numbers to AOL Dialer
SYSTEM REQUIREMENTS. Mobile and desktop browsers: Works best with the latest version of Chrome, Edge, FireFox and Safari. Windows: Windows 7 and newer Mac: MacOS X and newer Note: Ad-Free AOL Mail ...
Fixed Dialing Number (FDN) is a service mode of a GSM mobile phone's SIM card. [1] Numbers are added to the FDN list, and when activated, FDN restricts outgoing calls to only those numbers listed, or to numbers with certain prefixes. [1]