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Reply To: diff between hlr &vlr


HLR-Holds Permanent Subscriber Details of a particular PLMN + MSC Address wher it is presently Registered.A static DB.Fixed DB Point from where other Network Elements gets information if they need for any activitys inside the newtork.Can work as Integrated/Standalone.

VLR-Holds the subscribers service related informations.Knows exact location of the MS.Dynamic Database keeps track of Visitors who are regsitered in the MSC Service Area.Gets the copy of Subscriber data from HLR.Always integrated in MSC ( I never seen one Stand Alone-In DX200 Nokia Internally it is kept Seperately but the SW Treats as the Integrated Part )