(OMS) , (SC) (SSS) BSS (OMC-B) BSS. SSS BSS . SC/ GSS, SSS BSS PSDN (X.25). SC (LAN) TCP/IP. SC/OMC-B (OS) PSDN LAN (. 1.26). , , (SIM) = PCS, (SMC) (DPPS).
1.26 OMS.
SC SSS, OMC-B BSC, MSC.
OMC-S SSS , (SSNC). . 1.3.6 1.3.7.
SSS BSS
(SC) OMC-B . 1.27.
1.27 BSS SSS.
- (CT)/ (OMT) (SC)/ (OMP-B) LAN OMC. SC SSS, OMP-B - BSS ( BSC) (PSDN). SC LAN TCP/IP.
OM-B BSS -30 MSC ( - NUC). PSDN ITU-T Standard .25.