EIR
MME
DIAMETER
UE
BIP
EIR
Equipment Identity Register
Terminal information
maintenance and
management
Black terminal limitation
Terminal status notification
TCP
SMSGW
RUSA
MME
UE
DIAMETER
SMSGW
TCP
RUSA
EIR
Equipment Identity Register
Terminal information maintenance/management
Black terminal limitation
Terminal status notification
EIR
The EIR (Equipment Identity Register) stores and manages equipment information related to theft, malfunction, etc.
As a database within GSM and other 2nd generation mobile radio systems, it identifies terminals authorized for network access.
Each terminal possesses a unique International Mobile Equipment Identity (IMEI), which is registered in the EIR to ensure individual mobility and facilitate authentication during system access.
EIR main function
- Maintain/manage equipment status information
– White List: List of IMEIs that are permitted to be used within the network
– Black List: List of IMEIs that are not permitted to be used (illegal IMEIs such as stolen or counterfeit)
– Gray List: IMEIs that require management for operational reasons (malfunctions, etc.)
- IMEIs in the Black List are banned from calling, while White List and Gray List allow common calls.
- Provides a response to IMEI status information query requested by MME (SGSN or MSC).
- Provides a mechanism to restrict access to the network by unauthorized, damaged, or stolen terminals.
- Records and notifications of illegal terminal use.