() (CC). : [1] - , , , . , , . , .2 ( 2.3) 2.5 , , , 1, Ethernet , , . . 1, 3, S1. STM-N, (VC). VC, . 3.1 3.2. [1,2]
3.1 - VC
VC-11 | VC-12 | VC-2 | VC-3 | VC-4 | VC-4-4 | VC-4-16 | VC-4-64 | |
(N ) | ||||||||
,B, (/) |
. VC-4-N .
3.2 - Ethernet VC-N
() | VCAT | |||
10 | VC-3 | 0.2 | VC-12-5v | 0.92 |
FE | VC-4 | 0.67 | VC-12-47v | 1.0 |
GE | VC-4-16c | 0.42 | VC-4-7v | 0.85 |
10GE | VC-4-64c | 1.0 |
.
1., 0.2 20% V-3 ...
2.VCAT- .
, 2.6 3.1 , , VC . ( 2.3):
vc = (NB)VC-12 + (NB)FE + (NB)VC-3
vc =23*2.176 + 2*149.76 + 1*48.384 = 397.952 /.
, Ethernet (10E) , FE. 3.2 , VC-4 , , , 47 VC-12. , 2 : -, -.
1 C-12. , -4000. , vc = 397.952 /,
BVC-4 < BVC < BVC-16. (3.1)
3.4.
3.4
|
|
3.4 , , N , , STM-4, -4000, , Ethernet 10E, FE. N . 3.4 1. , , 300 10 1 (1-10), 10 2+ 11, . . : , , . . STM-4 . STM-4: C12 - 1, C3 - 3, FE - Ethernet. 3.4, S4 =622.08 /, S4 . , S1 S4 , 3. , , , . , 3.4 , , , .
. ( 3.5) , . , STM-4 (). ., STM-4. , 10 . .. 1 12 , , 2+D ...
, , 3.4 3.5 - . , (3.1), STM-4 ., STM-16, .- - () STM-16/4. 3.6. ., STM-16, . -. , - , - STM-4.
( 2.5) STM-N, Ethernet., >10/ , SFP, <10/ Ethernet ... - . , SDH. .
3.5
, .3.2 3.3.
3.3 - .
.. | |||||||||
- | - | - | - | ||||||
.
|
|
1. STM-N .
2. , 1, 2, 3.
3.6
. 3.4.
3.4 -
λs, | ,S,S | σλS, | R, | R , | D, | , | |||
. |
λs ; σλs ; PS, S, S ( PDH), ( SDH) S ; R, R R ; α - S R ( 3.1); D ( ); .