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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.
MMI stands for Man-Machine-Interface. Even though most of these MMI codes look pretty similar, they fall into different groups with completely different actions. Some are just used locally on the device, some are sent to the SIM, others are sent to the network. Different kinds of MMI codes Supplementary Service (SS) codes Those are the codes ...
A Maritime Mobile Service Identity (MMSI) is effectively a maritime object's international maritime telephone number, a temporarily assigned UID issued by that object's current flag state (unlike an IMO number, which is a permanent global UID).
2001 or MMI in Roman numerals; Manufacturers Mutual Insurance, a former Australian insurance company, now called Allianz Australia; Municipal Mutual Insurance, a British insurance company; Maximum medical improvement, a plateau in a person's healing process; McMinn County Airport's identification code
This list contains the mobile country codes and mobile network codes for networks with country codes between 400 and 499, inclusively – a region that covers Asia and the Middle East. However, the Asian parts of the Russian Federation and Turkey are included in Mobile Network Codes in ITU region 2xx (Europe) , while Maritime South East Asia ...
This list contains the mobile country codes and mobile network codes for networks with country codes between 300 and 399, inclusively – a region that covers North America and the Caribbean. Guam and the Northern Mariana Islands are included in this region as parts of the United States.
This is a list of Hypertext Transfer Protocol (HTTP) response status codes. Status codes are issued by a server in response to a client's request made to the server. It includes codes from IETF Request for Comments (RFCs), other specifications, and some additional codes used in some common applications of the HTTP.