Other cellular components actively working with the HLR include the gateway mobile switching center (G-MSC), visitor location register (VLR) and the. The HLR interacts with the Mobile Switching Center (MSC), which is a switch used for The third integral element is the Visiting Location Register (VLR), which. The HLR connects to the following elements: The G-MSC for handling incoming calls; The VLR for handling requests from mobile phones to attach to the.

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Network switching subsystem

There is an additional form of identification check performed on the serial number of the mobile phone described in the EIR section below, but this is not relevant to the AuC processing. The following procedures are implemented to deal with this:. Because cell phones, and their respective SIMs, are mostly mobile, the HLR serves as the main source of recent location information.

Actually HLR Having all the detail like customer ID, customer number, billing detail and for prepaid with IN intelligent network its has detail of current recharge of prepaid user so far its is very complex but i just make it in simple word for you. The billing center is responsible for processing the toll tickets generated by the VLRs and HLRs and generating a bill for each subscriber. Mobile Subscriber Roaming Number. The VLR is a database that contains temporary information about subscribers that is needed by the MSC in order to service visiting subscribers.

When an individual buys a subscription in the form of SIM, then all the information about this subscription is registered in the HLR of that operator.

The MSC performs the switching of calls between the mobile and other fixed or mobile network users, as well as the management of mobile services such as registration, authentication, location updating, handovers, and call routing to a roaming subscriber.

Please make sure that your answer is written in the same language as the hor.


If the authentication fails, then no services are possible from that particular combination of SIM card and mobile phone operator attempted. Irrelevant to Specialties or not an answer. It also interfaces with the PSTN. Do you know of others? There are various different names for MSCs in different contexts which reflects their complex role in the network, all of these terms though could refer to the same MSC, but doing different things at different times.

It was extended with an overlay architecture to provide packet-switched data services known as the GPRS core network. Articles needing additional references from March All articles needing additional references.

The TMSI will be updated frequently, this makes it very difficult for the call to be traced and therefore provides a high degree of security for the subscriber. X Like My Work Follow. There must be some level of support for this built into any of the different elements.

The HLR data is stored for as long as a subscriber remains with the mobile phone operator. This is designed to allow tracking of stolen mobile phones. Proper implementation of security in and around the AuC is a key part of an operator’s strategy to avoid SIM cloning.

The MSISDN also called the mobile subscriber integrated services digital network is a list of the telephone numbers for each subscription. You can’t add content on Bayt.

A home location register HLR is a database containing pertinent data regarding subscribers authorized to use a global system for mobile communications GSM network. By Mohamed Abaker Ezeldin at Oct The Authentication Center is a protected database that stores a copy of the secret key stored in each subscriber’s SIM card, which is used for authentication and ciphering of compuitng radio channel. Gsm is 2g or 3g?

What is a Visitor Location Register (VLR)? – Definition from Techopedia

Systems Monitoring computjng Dummies: It is owned and deployed by mobile phone operators and allows mobile devices to communicate with each other and telephones in the wider public switched telephone network PSTN. An IMEI is marked as invalid if it has been reported stolen or is not type approved. This article needs additional citations for verification. Retrieved from ” https: What is the difference between cloud computing and mobile computing?


DateDifwhich Microsoft tries Irrelevant to Specialties or computiing a Blog. The HLR is a database used for storage and management of subscriptions. Vpr is clear, however, that there are some countries where this is not in operation. Thank you for answering the question. While A and B are talking with each other, C can join the call and listen silently. This page was last edited on 18 Decemberat My Question is New.

Upvote 0 Downvote Reply 0 Report. The HLR is a system which directly receives and processes MAP transactions and messages from elements in the GSM network, for example, the location update messages received as mobile phones roam around. If the recipient appears in another MSC for example, when flying to another cityhe still receives the message because the MSC will notify the HLR once the recipient is detected in its jurisdiction. March Learn how and when to remove this template message.

Let our CV writing experts help you. Check for similar questions. Of course, the mobile phone can generate the K c itself by feeding the same RAND supplied during authentication and the K i into the A8 algorithm. After successful authentication, the MSC sends the encryption key K c to the base station controller BSC so that all communications can be encrypted and decrypted.

MSS software may run on generic computers or virtual machines in cloud environment. Before the SMS company forwards the message to the intended recipient, it scans through the HLR to find which mobile switching center MSC the recipient has recently used. The AuC does not engage directly in the authentication process, but instead generates data known as triplets for the MSC to use during the procedure.