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The last number of the IMEI is a check digit, calculated using the Luhn algorithm, as defined in the IMEI Allocation and Approval Guidelines: The Check Digit shall be calculated according to Luhn formula (ISO/IEC 7812). (See GSM 02.16 / 3GPP 22.016). The Check Digit is a function of all other digits in the IMEI.
To avoid confusion the database of GSM Association was renamed to IMEI Database - IMEI DB [1] (it was in 2003-2008, see “Document History” at IMEI Database File Format Specification [2]). Also sometimes a common IMEI database for several EIRs is called SEIR (Shared EIR). In each country, the CEIR can interact with IMEI DB differently.
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 network.
An IMSI is usually presented as a 15-digit number but can be shorter. For example, MTN South Africa's old IMSIs that are still in use in the market are 14 digits long. The first 3 digits represent the mobile country code (MCC), which is followed by the mobile network code (MNC), either 2-digit (European standard) or 3-digit (North American ...
Cần Thơ, anglicized as Can Tho or Cantho, is the fourth-largest city in Vietnam, and the largest city along the Mekong Delta region in Vietnam. [ 7 ] [ 8 ] It is noted for its floating markets , rice paper -making village, and picturesque rural canals . [ 8 ]
MSISDN (/ ˈ ɛ m ɛ s aɪ ɛ s d iː ɛ n / MISS-den) is a number uniquely identifying a subscription in a Global System for Mobile communications or a Universal Mobile Telecommunications System mobile network.
Can Tho International Airport [1] (IATA: VCA, ICAO: VVCT) — formerly Trà Nóc Airport — is an international airport located in Can Tho in Mekong Delta region of Vietnam. The airport was inaugurated on January 1, 2011 and received US$ 150 million to build on 20,750 square metres (223,400 sq ft) of land.
Can Tho University is a leading agricultural research center in Vietnam. Can Tho University has nine colleges and three research institutes. [2] Its goal is to be one of the leading higher education institutions in Vietnam and to be recognised as one of the top universities in the Asia-Pacific region in training and research by 2022. [3]