5 Questions
What is the primary purpose of the Equipment Identity Register (EIR)?
To validate the International Mobile Equipment Identity (IMEI)
What is the purpose of the 'Grey list' in the EIR database?
To store IMEIs of faulty mobile stations
Who can remotely access the EIR database?
Any MSC in the network
What happens to an IMEI that is reported stolen?
It is added to the Black list
What is the main difference between the Black list and the Grey list in the EIR database?
The Black list contains IMEIs of MS to be denied service, while the Grey list contains IMEIs of MS with minor problems
Study Notes
Equipment Identity Register (EIR)
- The EIR contains a database for validating International Mobile Equipment Identity (IMEI) related to MS equipment, not subscribers.
- The EIR database can be remotely accessed by MSCs in the network and also by MSCs in a different PLMN.
EIR Database Structure
- The EIR database consists of three lists of IMEIs: White list, Black list, and Grey list.
- White list: contains IMEIs of valid MS equipment.
- Black list: contains IMEIs of MS reported stolen or to be denied service for some reason.
- Grey list: contains IMEIs of MS with problems (e.g., faulty software), but not severe enough to be blacklisted.
Learn about the Equipment Identity Register (EIR) in mobile networks, which validates International Mobile Equipment Identity (IMEI) and its database structure.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
