( ) 2,048/.
MSC BSC BTS SS7 ( 7).
7 (SS7) MSC, AuC, OMC HLR, VLR,EIR.
GSM 35,0 ( , , ..)
( )
- - . , , , . MS BTS , 64,0/.
- , , . . GSM LAPDm - Link Acces Procedure - on the D chanel - D - 16,0/ - ISDN, LAPD - ISDN. LAPDm LAPB - Link Acces Procedure Balanced- , - - .25.
LAPB HDLC - Hing-Level Data Link Control - .HDLC -- , SDSL - Singe-line Digital Subscriber Line - - DSL -, 1,544/ , 3048,8. LAPD, . , , ().
- RRM ( ) . , , .
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- - MM ( ) . . , , , MS é - TMSI - Temporary Mobile Subscriber Identity. HLR-.
MS MS - IMSI - International Mobile System Identifier - , SIM-, SIM- MS.TMSI , MS.
, GSM, MS IMSI BTS, HLR-.
IMSI , TMSI VLR.
- - CM - Conection Management ( ) :
- - - Call Control;
- - SMS - Short Message Serice;
- - SS - Supplementary Service;
CM , , , , .