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This internationally unique identifier is used for location updating of mobile subscribers. It is composed of a three decimal digit mobile country code (MCC), a two to three digit mobile network code (MNC) that identifies a Subscriber Module Public Land Mobile Network (SM PLMN) in that country, and a location area code (LAC) which is a 16 bit number with two special values, thereby allowing ...
For GSM, UMTS and LTE networks, this number was provisioned in the SIM card and for cdmaOne and CDMA2000 networks, in the phone directly or in the R-UIM card (the CDMA equivalent of the SIM card). Both cards have been superseded by the UICC. An IMSI is usually presented as a 15-digit number but can be shorter.
A typical SIM card (mini-SIM with micro-SIM cutout) T-Mobile nano-SIM card with NFC capabilities in the SIM tray of an iPhone 6s cell phone A SIM (Subscriber Identity Module) card is an integrated circuit (IC) intended to securely store an international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate subscribers on mobile telephone ...
The IMSI is often used as a key in the home location register ("subscriber database") and the MSISDN is the number normally dialed to connect a call to the mobile phone. A SIM has a unique IMSI that does not change, while the MSISDN can change in time, i.e. different MSISDNs can be associated with the SIM.
Lytton Area Wireless Society: Operational: Unknown [48] 302: 353: SpeedFI Inc. Unknown: Unknown [37] 302: 360: MiKe: Telus Mobility: Not operational: iDEN 800: iDEN shut down January 2016 302: 361: Telus: Telus Mobility: Not operational: CDMA 800 / CDMA 1900: CDMA shut down 31 May 2017; [49] MNC withdrawn [38] 302: 370: Fido: Fido Solutions ...
001-01-1-1: 001-01 is a PLMN designated for testing purposes, with location area 1 and cell 1. 289-88-23-42: would identify cell 42 in location area 23 of the A-Mobile operator in Abkhazia; 648-03-65535-65535: would represent the highest possible CI and LAC numbers of the Telecel operator in Zimbabwe
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Roaming is one of the fundamental mobility management procedures of all cellular networks.Roaming is defined [2] as the ability for a cellular customer to automatically make and receive voice calls, send and receive data, or access other services, including home data services, when travelling outside the geographical coverage area of the home network, by means of using a visited network.