Visitor Location Register

All you want to know about Visitor Location Register

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 It has been suggested that this article or section be merged into GSM core network#Visitor Location Register (VLR). (Discuss)

Visitor Location Register (VLR) is a database - part of the GSM mobile phone system - which stores information about all the mobiles that are currently under the jurisdiction of the MSC (Mobile Switching Center) which it serves. Of all the information it stores about each MS (Mobile Station), the most important is the current LAI (Location Area Identity). LAI identifies under which BSC (Base Station Controller) the MS is currently present. This information is vital in the call setup process.

Whenever an MSC detects a new MS in its network, in addition to creating a new record in the VLR, it also updates the HLR of the mobile subscriber, apprising it of the new location of that MS.

See also


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Retrieved from "http://en.wikipedia.org/wiki/Visitor_Location_Register"

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