 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| – |
equipment
identity checking
|
|
|
|
n |
Equipment
Identity Register (EIR) maintains database related
|
|
|
to
mobile equipment (hardware) identified by International
|
|
|
Mobile
Equipment Identity (IMEI)
|
|
|
|
n |
IMEI
consists of Type Approval Code (granted when mobile
|
|
|
station
type passes type approval testing to ensure mobile
|
|
|
station
behaves properly), Final Assembly Code (indicating
|
|
|
manufacturing
plant), and the equipment serial number
|
|
|
|
n |
EIR
stores three lists of IMEIs
|
|
|
|
– |
white
list contains ranges of IMEIs of type approved mobile
|
|
|
|
stations,
maintained by MoU
|
|
|
|
– |
black
list contains IMEIs which are stolen or malfunctioning,
|
|
|
and
are subsequently barred
|
|
|
|
– |
gray
list contains IMEIs which should be supervised for possible
|
|
malfunctions
|
|
