Search results
Results From The WOW.Com Content Network
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 Phase 1, as specified in GSM 02.90, only supports mobile-initiated ("pull") operations. [8] In the core network, the message is delivered over MAP, USSD Phase 2, as specified in GSM 03.90. [9] After entering a USSD code on a GSM handset, the reply from the GSM operator is displayed within a few seconds.
These codes are hardcoded into every GSM/UMTS/LTE device worldwide and cannot be changed by your network operator. Unstructured Supplementary Service Data (USSD) codes If you enter a code that at least ends in a hash sign (and press <SEND>) and is not recognized by the phones MMI parser, the code will be sent to the network verbatim.
The 3GPP TS 23.038 standard (originally GSM recommendation 03.38) defines GSM 7-bit default alphabet which is mandatory for GSM handsets and network elements, [1] but the character set is suitable only for English and a number of Western-European languages.
The Type Allocation Code (TAC) is the initial eight-digit portion of the 15-digit IMEI and 16-digit IMEISV codes used to uniquely identify wireless devices. The Type Allocation Code identifies a particular model (and often revision) of wireless telephone for use on a GSM , UMTS , LTE , 5G NR , iDEN , Iridium or other IMEI-employing wireless ...
Cellular network standards and generation timeline. This is a comparison of standards of wireless networking technologies for devices such as mobile phones.A new generation of cellular standards has appeared approximately every tenth year since 1G systems were introduced in 1979 and the early to mid-1980s.
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.
For OS X releases beginning with 10.11, and for macOS releases, varieties of apples were used as internal code names. [ 94 ] Mac OS X : Cyan, Siam (in reference to joining Mac OS and Rhapsody) [ 91 ]