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  2. National Do Not Call Registry - Wikipedia

    en.wikipedia.org/wiki/National_Do_Not_Call_Registry

    The National Do Not Call Registry is a database maintained by the United States federal government, listing the telephone numbers of individuals and families who have requested that telemarketers not contact them. [1] Certain callers are required by federal law to respect this request. Separate laws and regulations apply to robocalls in the ...

  3. International mobile subscriber identity - Wikipedia

    en.wikipedia.org/wiki/International_Mobile...

    www .itu .int /rec /T-REC-E .212. The international mobile subscriber identity ( IMSI; / ˈɪmziː /) is a number that uniquely identifies every user of a cellular network. [1] It is stored as a 64-bit field and is sent by the mobile device to the network. It is also used for acquiring other details of the mobile in the home location register ...

  4. Central Equipment Identity Register - Wikipedia

    en.wikipedia.org/wiki/Central_Equipment_Identity...

    A Central Equipment Identity Register (CEIR) is a database of mobile equipment identifiers ( IMEI – for networks of GSM standard, MEID – for networks of CDMA standard). Such an identifier is assigned to each SIM slot of the mobile device. Lists of IMEIs may be the: White – for devices that are allowed to register in the cellular network ...

  5. National Do Not Call List - Wikipedia

    en.wikipedia.org/wiki/National_Do_Not_Call_List

    The National Do Not Call List ( DNCL) ( French: Liste nationale de numéros de télécommunication exclus) is a list administered by the Canadian Radio-television and Telecommunications Commission (CRTC) that enables residents of Canada to decide whether or not to receive telemarketing calls. [1] It was first announced by the Government of ...

  6. Restrictions on cell phone use while driving in the United ...

    en.wikipedia.org/wiki/Restrictions_on_cell_phone...

    A 2014 report from the National Safety Council, which compiles data on injuries and fatalities from 2013 and earlier, concluded that use of mobile phones caused 26% of U.S. car accidents. Just 5% of mobile phone-related accidents in the U.S. involved texting: [41] "The majority of the accidents involve drivers distracted while talking on ...

  7. Cellular frequencies in the United States - Wikipedia

    en.wikipedia.org/wiki/Cellular_frequencies_in...

    There are 51 MTAs, 493 BTAs and 175 EAs in the United States. The Advanced Wireless Services (AWS) bands, auctioned in the summer of 2006, were for 1,710–1,755 MHz, and 2,110–2,155 MHz. The spectrum was divided into blocks: A blocks were for Cellular Market Areas, based on existing cellular (1G) licenses, and were 2 × 10 MHz.

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