30 September 26, 2006 6809505A63-O
UMTS Subscriber Identity Module (USIM) and Identification V3xx
International Mobile Station Equipment Identity (IMEI)
The International Mobile station Equipment Identity (IMEI) number is an
individual number unique to the PCB and is stored within the unit's memory.
The IMEI uniquely identifies an individual mobile station and thereby provides a means for
controlling access to GSM networks based on mobile station types or individual units. The full
IMEI structure is listed in Table 2.
Where
TAC Type Allocation Code, formerly known as Type Approval Code
NN Reporting body identifier
XXXXXX Type Identifier
ZZZZZZ Individual unit serial number
A Phase 1 = 0.
Phase 2 = check digit defined as a function of all other IMEI digits
Other label number configurations present are:
• TRANSCEIVER NUMBER: Identifies the product type. Normally the SWF number. (i.e.
V100).
• PACKAGE NUMBER: Identifies the equipment type, mode, and language in which the
product is shipped.
Table 2. IMEI Number Breakdown
TAC Serial Number Check Digit
NNXXXXXX ZZZZZZ A
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