(IMEI) PLMN MOC MTC, (. 3.3.5 " ") IMSI ( 3.3.5.2 " / IMSI ") , , PLMN.
:
1. MSC IMEI MS .
2. MSC IMEI, MS, EIR IMEI.
3. EIR (, ) MSC.
4. (MOC, MTC) . PLMN .
. 3.31 IMEI.
3.31 IMEI.
(. " SSS", 1, "EIR", " ").
, ( 3.3.2) GSM 2 SSS " IMEI". , , , BSC, SSS, BSS PLMN GSM 2.
GSM
, GSM (PLMN) GSM.
GSM , , ( , ) .
PLMN GSM (. 3.6.4):
PLMN GSM
MS PLMN GSM PLMN GSM
PLMN
PLMN: , PLMN. GSM PLMN.
( ) PLMN (HPLMN) PLMN (VPLMN).
:
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PLMN ( , GSM 2). PLMN 10 . , . VLR HLR.
GSM, PLMN VLR. MSC/VLR. PLMN GSM ( ).
GSM PLMN PLMN.
(SS7) .
D900/D1800 PLMN (MSISDN), GSM. , "" (. " / IMSI ", 3.3.5.2) "". , , (SSS) GSM , , GSM ( ). MS.
- GSM, ISDN (MSISDN) . , , GSM. , "" (HLR) GSM.
GSM-RITL
GSM-RITL CSC , GSM. , GSM-RITL, , .