ATM . ,6-13 , , VPI/VCI.
.6-13. ATM
ATM ( . Q.2931), . , ( ) , . , . ( ), , , Q.2931. VPI/VCI , , VPI/VCI . , . ATM.
, , VPI/VCI ( ). .6-13 , , , ( UNI) , , - , .
ATM
ATM , . ATM , , , ATM.
ATM PVC, AF : COD, SVC.
, () ATM . , QoS . . Q.2931. ( ) , ATM UNI (SVC channel).
, Q.2931, , :
- ;
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|
- -;
- , , ;
- (-);
- ATM : Class A, Class Class X;
- ;
- VPCI ( ) VCI ( );
- ;
- Pb-UNI ATM;
- ;
- ISDN ISDN.
(DSS-2).
ATM
SVC ATM , , .
- , (NSAP) OSI. ATM (AESA), ATM.
AESA: DCC, ICD, E.164 NSAP .164 Local. 1 3-. 20 . UNI 3.1, UNI Signaling 4.0, ILMI 4.0, PNNI.
AESA DCC -
IDP | DSP | |||
AFI | DCC | HO-DSP | ESI | SEL |
IDI |
AESA .164 NSAP -
IDP | DSP | |||
AFI | E.164 | HO-DSP | ESI | SEL |
IDI |
:
AFI - - AESA , .. ( AFI -1 ):
DCC - - ISO, DSP; AF1 = 3916;
ICD - - ;
.164 - - .164, none IDI .164 (15 ), HO-DSP, ESI, SEL .. "0"; AFI = 4516;
Local - - , IDI ; AFI = 49,6;
DSP - - , : HO-DSP, ESI SEL, , ; DSP: ESI SEL ;
ESI - - 6 , , .. ;
HO-DSP - , DSP, ;
IDI - - , DCC (AFI=39) .. 840F16, ;
ID - - , ;
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|
SEL - - 1 , ATM, .
, . ISO/ITU-T. AFI, DCC ICD.
DCC
DCC ATM, ISO ISO 3166:
- - , ;
AREA - / - , ;
DFI - ID DSP, RD - , ; RSVD - .
, DCC, ANSI ( 16- ):
1 | 2 | 1 | 3 | 6 | 6 | 1 |
AFI | DCC | DFI | ESI | SEL | ||
840F |
.164
.164 . ATM (ASP) ATM. .164 AESA:
- .164 AESA, HO-DSP, ESI SEL;
- - .164 AESA, HO-DSP, ESI SEL .