D900/D1800 :
(SEPP)
(SDL CHILL)
( CHILL)
D900/D1800 (SDL) (ITU-T). , , , . D900/D1800 , ‑ SDL . SDL CHILL . SDL.
CHILL
D900/D1800, , CHILL ( ), . CHILL , . , CHILL, , , . , CHILL D900/D1800. , , CHILL, , D900/D1800.
, CHILL () . . , (APS) .
. D900/D1800 , . . D900/D1800 , . , CHILL, CHILL . D900/D1800 .
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BSS
(BSS) (OMC-B) "Siemens" (SBS). (BSS) (BSC), - (BTS) - (BTSE), (TRAU), (LMT), . 1.15. , "" - , , , , . , BSC, BTS.