FR ATM , ,
. .5-11.
5-11. FUNI FR
FUNI | Rsvd | |||
CN | Rsvd | CLP | ||
FR | DLCI msb | C/R | ||
DLCI Isb | FECN | BECN | DE |
CN - ATM, FECN FR, Rsvd - , CLP - ATM, DE FR. .5-11 , DLCI PVC FR, , FECN-CN DE-CLP. DLCI FR VPI/VCI ATM (. 6). BECN C/R, ATM, ATM. , PVC/SVC 10- DLCI ( 2- ) .. SVC.
FR ATM FR , FUNI, ATM, , . ATM FR. FUNI ATM SVC, : (SNMP) (MIB), , () .
FUNI 3 ATM.
FR
ATM " " (QoS) . FR 2 - QoS, : " " () " " (DP). .
- Emission Priority - - . 3- : (, BTDS-), (BTDS-) () , .
DP - Discard Priority - - , ( DE); DP .. 4: 0 () - 3 ().
.164 .121
FRF.4.1, Q.933, - SVC .. .164 ( - ISDN), .121 ( -). .4. - .
|
|
SVC : , - . .5.12 5.13.
5.12.
ID . | ||||||||
ID | ||||||||
4-n | ( IRA) |
5.13.
ID . | |||||||||||
ID | |||||||||||
3a | Presentation | Screening | |||||||||
4-n | ( IRA) | ||||||||||
:
- (7-6-5): 000 ( "") 001 ( ""), ;
ID - (4-3-2-1): 0001 - .164 ( /ISDN); 0011 - .121 ( );
- IRA (IA5: 7-- , .50), .. (14 .121,15 .164), , ;
Presentation - (7-6): 00 - ; 01 - ; 10 - ; 11 - ;
Screening - (2-1): 00 - ; 01 - ; 10 - ; 11 - .