6809495A75-O October 14, 2005 35
Level 1 and 2 Service Manual Subscriber Identity Module (SIM) and Identification
Label
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
XXXX Type Identifier
YY YY is set to 00 from 01/01/2003 until 31/03/2004
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
NNXXXX YY ZZZZZZ A
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