Visitor Location Register

What is a Visitor Location Register (VLR)?

Definition and meaning of Visitor Location Register

A tourist viciNity sign in (VLR) is a Database that incorporates Data about the Subscribers Roaming within a Mobile Switching Center’s (MSC) area location. The primary Function of the VLR is to reduce the Range of queries that MSCs need to Make to the home region sign in (HLR), which holds permanent facts concerning the Cellular Network’s subscribers.

Ideally, there need to be only one visitor vicinity sign up according to MSC, but it is also feasible for a unmarried VLR to serve a couple of MSCs.

What Does Visitor Location Register Mean?

The type of facts (called “Fields” in database phrases) stored in a VLR is much like that saved within the HLR. That is, the VLR additionally holds the global mobile subscriber identification (IMSI) and the Cell subscriber incorporated services Digital Network (MSISDN), the offerings allowed for a selected IMSI/MSISDN pair, and Authentication statistics, all of which correspond to a specific subscription.

The principal difference between inFormation saved in the VLR and that found within the HLR is that some of the information inside the latter is more permanent, whilst the facts in the former Modifications more regularly. Also, if a commUnity is designed such that one VLR serves each MSC’s location place, there may be fewer facts within the VLR than the HLR.

As soon as a subscriber actions into an MSC’s area area, the corresponding Record is UPDATEd in the VLR. Subsequently, the subscriber’s HLR is automatically knowledgeable of the trade.

A visitor vicinity register might also carry out the following features:

• Monitor the subscriber’s place inside the VLR’s jurisdiction
• Determine whether or not a subscriber may additionally get right of entry to a particular service
• Allocate roaming numbers for the duration of incoming calls
• Delete the records of inactive subscribers
• Accept records handed to it through the HLR

What does VLR stand for?

When we refer to VLR as an acronym of Visitor Location Register, we mean that VLR is formed by taking the initial letters of each significant word in Visitor Location Register. This process condenses the original phrase into a shorter, more manageable form while retaining its essential meaning. According to this definition, VLR stands for Visitor Location Register.

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