- : ( , .9-10 ), (RS) (MS).
.9-10. SDH "-"
, :
I - , 2 ,
S - , 15 ,
L - , 40 ( 1310 ) 80 ( 1550 ).
-, .
.9-2. STM-1/4/16 , : ( I), - ( S), - ( L). RS SDII :
< > - < STM>.< .
STM .9-2, :
1 - - 1310 ;
2 - 1550 G.652 ( S) G.652, G.654 ( L);
3 - 1550 G.653.
, L-4.3 RS STM-4, 1550 .
9-2.
: | |||||||
, | |||||||
(. ITU-T) | G.652 | G.652 | G.652 | G.652 | G.652.G.654 | G.653 | |
, | 2 | -15 | -40 | -80 | |||
STM | STM-1 | I -1 | S-1.1 | S-1.2 | L-1.1 | L-1.2 | L-1.3 |
STM-4 | I-4 | S-4.1 | S-4.2 | 1-4.1 | L-4.2 | L-4.3 | |
STM-16 | I -16 | S-16.1 | S-16.2 | 1-16.1 | L-16.2 | L-16.3 |
G.957 STM-16 . .. 120, 160, 250, 320 600-640 , .
ITU-T () STM-4/16/64/256
. ITU-T: G.691, G.693 G.959.1 I, S L 10 40 / , , , . ( , WDM): V U, 622 / 2,5 /. , , . G.957.
|
|
, . G.693
: W-yAz, :
W - VSR d - d ( ): VSR600; VSR1000; VSR2000, ;
- : 2 - NRZ10 /; 3 - NRZ 40 /;
- : R - 4 ; L - 6 ; -12 ; H -16 ; V - /;
z - : 1 -1310 , G.652; 2 -1550 , G.652; 3 -1550 , G.653; 5 -1550 , G.655.