1.2.1 :
, ;
;
: , , .
NGN :
;
;
;
.
:
1) ;
2) ( ) , .
NGN ( ).
NGN , :
NGN;
NGN;
NGN;
NGN.
1.2.2
( − ) . . ( 1.3).
−
−
− -
1.3 − NGN
(AG − Access Gateway), V5.2 , NGN ( 1.4).
(Access Gateway)
ADSL (Asymmetric Digital Subscriber Line) )
SDSL (Symmetric High-bit rate Digital Subscriber Line)
1.4 −
1 − /ISDN NGN
NGN /ISDN NGN . ( 1.5):
|
|
1 (AG − Access Gateway). . AG.
2 . , CS. (SG − Signaling Gateway) (MG − media-gateway). SG , MG .
1.5 − NGN
(Softswitch, MGC) - (CS − Call Server).