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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 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.
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.
The international mobile subscriber identity (IMSI; / ˈ ɪ m z iː /) 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.
To call a local number from a landline-phone, dial directly the 7 digits of the subscriber (xxx-xxxx). To make a national long-distance call, or from any mobile phone to a local or national number, dial (0a) xxx-xxxx (For example, to a number in Pichincha province, (02) 211-1111).
BlueLine Grid is a company that provides a mobile communication and mass notification platform built for interagency communication between civil service employees and private sector security teams. BlueLine Grid was created by Bill Bratton , the 42nd Commissioner of the NYPD (under 109th Mayor Bill de Blasio ), formerly the 38th Commissioner of ...
In many countries, dialing either 112 (used in Europe and parts of Asia) or 911 (used mostly in the Americas) will connect callers to the local emergency services.But not all countries use those emergency telephone numbers.
The 2023-2024 Ecuador electricity crisis was caused by a severe drought that depleted water levels at hydroelectric plants and a lack of capacity buildup. [1] Ecuador experienced rolling blackouts for up to 14 hours per day in the fall crisis (started on 23 September 2024 [ 1 ] ) of 2024. [ 2 ]