What is the communication system EIR?
A brief identification equipment in mobile communication applications, mobile phone user initiates a call, the mobile switching center (MSC) and the visitor location register (VLR) to the mobile station (mobile phone) IMEI request, and send it to EIR, EIR will receive IMEI compared with white, black and grey three table, the the results are sent to the MSC/VLR MSC/VLR, in order to decide whether to allow the mobile devices to access the internet. Therefore, if the mobile station uses a stolen mobile phone or mobile device without fault type certification, then MSC/VLR will determine the theft of the location of the mobile station and the mobile station of the fault block, but also to take timely preventive measures. What we usually call tracking a stolen cell through a network tracker is through EIR. Vodafone and other network operators have begun using the service to monitor stolen phones. Unfortunately, China basically does not use EIR to identify IMEI, and if the stolen mobile phone replacement network and modify the IMEI, then EIR will be powerless.
Both EIR and CIR (promised information rate) are very important business requirements for dedicated line services, and traditional basic data private line services such as frame relay and ATM can provide CIR/EIR.
EIR in the base station, base station stores all mobile devices of the international mobile equipment identity (IMEI), through the verification of three forms (white, grey and black list list list) used to prevent unauthorized user access, network has monitor equipment operation and guarantee the security of network operation function. Every factory with a network license has a unique hardware code, similar to the computer's MAC address, the world's only. For mobile phones, this number is called the international mobile device identification number (IMEI).
