1、INTERNATIONAL TELECOMMUNICATION UNION ITU=T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU G.853.8 (03199) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital transmission systems - Digital networks - Management of transport network Information viewpoint for pre-provision
2、ed adaptation management ITU-T Recommendation G.853.8 (Previously CCIlT Recommendation) STD-ITU-T RECMN G=853*8eENGL L999 4862593 ObbL2b3 789 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS INTERNATIONAL ANA
3、LOGUE CARRIER SYSTEM TRANSMISSION SYSTEMS GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIER- INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON METALLIC LINES G. 1 00-G. 199 G.200-G.299 G. 300-G. 399 GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON RAD
4、IO-RELAY OR SATELLITE LINKS AND INTERCONNECTION WITH METALLIC LINES G.400-G.449 COORDINATION OF RADIOTELEPHONY AND LINE TELEPHONY G.450-G.499 TESTING EQUIPMENTS TRANSMISSION MEDIA CHARACTERIS TICS DIGITAL TRANSMISSION SYSTEMS TERMINAL EQUIPMENTS DIGITAL NETWORKS General aspects Design objectives for
5、 digital networks Quality and availability targets Network capabilities and functions SDH network characteristics Management of transport n SDH radio and satellite systems integration Optical transport networks DIGITAL SECTIONS AND DIGITAL LINE SYSTEM G.600-G.609 G.700-G.799 G.800-G.899 G.800-G.809
6、G.810-G.819 G.8204.829 G.830-G.839 G. 840-G. 849 859 G .86O-G.869 G.870-G.879 G .9OO-G .999 For further details, please re all users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed b
7、elow. A list of the currently valid ITU-T Recommendations is regularly published. i ITU-T Recommendation G.851.1 (1996), Management of the transport network - Application of the RM-ODPJi.amework. 2 ITU-T Recommendation G.852.2 (1 999), Enterprise viewpoint description of transport resource model. 3
8、ITU-T Recommendation G.852.8 (1 999), Enterprise viewpoint for pre-provisioned adaptation management. 3 Definitions None. 4 Abbreviations This Recommendation uses the following abbreviations: LC Link Connection Pam pre-provisioned adaptation management SDH Synchronous Digital Hierarchy TEM transport
9、 enterprise model tu tributary unit UML Unified Modelling Language 5 Conventions None. Recommendation 6.853.8 (03/99) 1 6 container STDmITU-T RECMN G-853-ENGL 1979 m 48b259L ObbL2b9 LT7 11 UML class diagram representing relationships between classes client server pamTrail pamlinkconnection linkConne
10、ctionIsSupportedi3yTrail - 11 subnetworkTPIsRelatedToExtremity 1N se“ extremity abstraction element I N 2 TO410740-99 Figure UG.853.8 - pam link, link connection, trail and subnetworkTP class diagram Recommendatioii G.853.8 (03/99) - server pamNetworklTP client pamNehvorkCP networkTTPAdaptsNetworkCT
11、Ps N 11 container 11 pamTo pologicalLinkEnd extremity pamAvailableLinkBandwith pamMaxProvisionableBandwith pamPotentiaiLinkBandwith pamProvisionedLinkBadwith pamLinkEndH&NetworkCTPs element , 1 1N , client 1N I abstraction - pamSubnetworkTP To41 0750-99 Figure 2/G.853.8 - pam networkTTP, network CTP
12、 subnetworkTP and linkEnd class diagram Recommendation 6.853.8 (03/99) 3 7 pamllientlay erNetworkDornain STDmITU-T RECMN G.853-8-ENGL 1999 6 48b259L Obb1271 855 m UML class diagram representing the inheritance hierarchy pamServerLayerNetworkDomain 4 G.853.1: topologicallink t I pamTopologicalLink 1
13、 G.853.1: (3.853.1 : linkconnection t t G.853.1: 1 linkEnd 1 t pamLinkConnection pamTopologicaiLinkEnd lay erNetworkDomain I t t Figure 3/G.853.8 - Information object class inheritance diagram Recommendation G.853.8 (03/99) STD ITU-T pamLinkisSupportedByTrai1 RECMN G-853-8-ENGL 1979 48b2591 Obb1272
14、791 = pamLinkEndisSupportedB yNetworklTP IinkIsSupportedByTraii IinkEndIsSupportedByNetworkTTP I I IinldlasLinkConnections 1inkEndHasNetworkCTP pamLinkHasLinkConnections 1 pamlinkEndHasNetworkCTP G.853.1: neworkTTPAdaptsNetworkCTPs IayerNetworkDornainIsMadeof IayerNetworkDornainCan ServeLndS TO41077
15、0-99 Figure 4lG.853.8 - Information relationship class inheritance diagram Recommendation G.853.8 (03/99) 5 8 Table 1/6.853.8 - Correspondence between local label references and full label references Full label reference Local label reference 1 1ayerNetworkDomain 1 I I linkconnection I I linkEnd I 1
16、inkEndHasNetworkCTPs -1 IinkIsTerminatedB y LinkEnd I I subnetwork 1 subnetworkTP I topologicallink I topologicalLinkEnd I trail I 1ayerNetworkDomainIsMadeOf IinkHasLinkConnections ppp p - 1inkEndHasNetworkCTPs networkTTPAdaptsNetworkCTP subnetworkIsDelimitedB y 1 subnetworkTPIsRelatedToExtremity 1i
17、nkConnectionIsSupportedByTrail IinkBinds LayerNetworkDomainCanServeLnds 6 Recommendation G.853.8 (03/99) STDmITU-T RECMN G-853.8-ENGL 1999 = 4862591 Obb1274 564 I 9 Information object class definitions 9.1 pamClientLayerNetworkDoman DEFINITION RELATIONSHIP “This object class is derived from .“ , . 9
18、2 pamLinkConnection DEFINITION RELATIONSHIP “This object class is derived fiom .“ , , , . 9.3 pamNetworkCTP DEFINITION RELATIONSHIP “This object class is derived from .“ , , , . 9.4 pamServerLayerNetworkDomain DEFINITION RELATIONSHIP “This object class is derived .“ , DEFINITION “This object class
19、represents a link served by only one trail. This object class is derived from .“ , , , . invconsistentAvailableLinkCapacity ATTRIBUTE INVARIANT “The is lower than or equal to the .“ Recommendation G.853.8 (03/99) 7 STD-ITU-T RECMN G-853-8-ENGL 3797 4862573 Obb3275 4TO inv-consistentProvisionedLinkCa
20、pacity inv-ConsistentPotentialLinkCapacity “The is lower than or equal to the .“ “The is lower than or equal to the .“ RELATIONSHIP , , . 9.6 pamTopologicalLinkEhd DEFINITION “This object class represents a linkEnd served by only one networkTP.“ “This object class is derived from .“ , , , . inv-cons
21、istentAvailableLinkCapacity invconsistentProvisionedLinkCapacity inv-consistentPotentialLinkCapacity ATTRIBUTES INVARIANT “The is lower than or equal to the .“ “The is lower than or equal to the .“ “The is lower than or equal to the .“ RELATIONSHIP , , . 9.7 pamTrai1 DEFINITION RELATIONSHIP “This ob
22、ject class is derived from .“ I , DEFINITION RELATIONSHIP “This object class is derived from .“ , , . 8 Recommendation G.853.8 (03/99) - 9.9 pamsubnetwork .“ , , . 9.10 pamSubnetworkTP .“ RELATIONSHIP DEFINITION , . 10 Information relationship definitions 10.1 pamClientLayerNetworkDomainIsMadeOf DEF
23、INITION “The pamClientLayerNetworkDornainIsMadeOf relationship class describes the relationship that exists between the client layer network and all its components. This relationship type is a subtype of object type or subtype.“ “Played by instances of the following information object type or subtyp
24、e: , , , , .“ 10.2 pamLayerNetworkDomainCanServeLnds DEFINITION “The pamLayerNetworkomainCanServeLnds relationship class describes the relationship that exists between the server layer network and all its client layer network domains. This relationship type is a subtype of information object type or
25、 subtype.“ “Played by an instance of information object type or subtype.“ inv-ClientRoleCardinality “One and only one client per signal identification supported by the server may participate in the relationship.“ Recommendation 6.853.8 (03/99) 9 - _ DEFINITION “The pamLinkEndHasNetworkCTFs relations
26、hip class describes the relationship that exists between and its components. This relationship type is a subtype of .“ container element ROLE “Played by an instance of information object type or subtype.“ “Played by instances of information object type or subtype.“ INVARIANT invconsistentProvisioned
27、Capacity s “The element role cardinality is equal to the of the container.“ 10.4 pamTopologicalLinkEndIsSupportedByNetworkTTP DEFINITION “The pamTopologicalLinkEndIsSupporte&yNetworkITP relationship class describes the relationship that exists between the total capacity available from a and the prov
28、isioned number of of all the supported . This relationship type is a subtype of .I client server INVARIANT ROLE “Played by instances of information object type or subtype.“ “Played by an instance of information object type or subtype.“ inv-consistentcapacity “The is greater than or equal to the sum
29、of the of all the clients of the considered .“ “The is greater than or equal to the sum of the of all the clients of the considered .“ inv-consistentPotentialLinkCapacity 10.5 pamLinkHasLinkConnections DEFINITION “The pamLinkHasLinkConnections relationship class describes the relationship that exist
30、s between and its components . This relationship type is a subtype of .“ container element ROLE “Played by an instance of information object type or subtype. “Played by instances of information object type or subtype.“ INVARIANT inv-consistentProvisionedCapacity “The element role cardinality is equa
31、l to the of the container.“ 10.6 pamTopologicalLinkIsSupportedByTrai1 DEFINITION “The pamTopoIogicalLinkIsSupportedByTrai1 relationship class describes the relationship that exists between the total capacity available from a trail and the provisioned link capacity of all the supported links. This re
32、lationship type is a subtype of .“ 10 Recommendation G.853.8 (03/99) STD*ITU-T RECMN G.853-8-ENGL 3999 II 4862593 Obb327B LOT ROLE client server INVARIANT “Played by instances of information object type or subtype.“ “Played by an instance of information object type or subtype.“ inv-consistentcapacit
33、y “The is greater than or equal to the sum of the of all the clients of the trail.“ “The for each client is equal to the plus the sum of the of all the clients.“ inv-consistentPotentialLinkCapacity 10.7 pamServerLayerNetworkDomainIsMadeOf DEFINITION “The pamServerLayerNetworkDomainIsMadeOf relations
34、hip class describes the relationship that exists between the server layer network and all its components. This relationship type is a subtype of object type or subtype.“ “Played by instances of the following information object type or subtype: , .I 11 Static Schemas None. 12 Dynamic Schemas None. 13
35、 Attributes 13.1 pamAvailab1eLinkCapacii-y DEFINITION INVARIANT “The pamAvailableLinkCapacity attribute represents the provisioned capacity that is not assigned.“ inv-1 “The pamAvailableLinkCapacity can never be less than zero.“ I This state is managed in the pre-provisioned linkconnection managemen
36、t community (plcm). Recommendation 6.853.8 (03/99) 11 STD-ITU-T RECMN G-853.8-ENGL 1999 4862593 ObbL279 04b 13.2 pamMaxProvisionableCapacity DEFINITION “The pamMaxProvisionableCapacity attribute provides the value that represents the maximum capacity that could be provisioned for a link from the ser
37、ver trail of this link. However, this maximum may not be provisioned for this link if several links are supported by the same server trail: in this case, they are sharing the maximum capaciy .“ inv- 1 INVARIANT “The pamMaxProvisionableCapacity can never be less than zero.“ 13.3 pamPotentialLinkCapac
38、ity This information concept is related to the following enterprise entities: DEFINITION “The pamPotentialLinkCapacity attribute provides a value that represents the potential capacity that could be provisioned on a link from the capacity that has not already been provisioned from the server trail o
39、f this link.“ inv-1 INVARIANT “The pamPotentialLinkCapacity can never be less than zero.“ 13.4 pamProvisionedLinkCapacity This information concept is related to the following enterprise entities: DEFINITION iNVARIANT “The pamProvisionedLinkCapacity attribute provides the capacity provisioned on a li
40、nk.“ inv-1 “The pamProvisionedLinkCapacity can never be less than zero.“ APPENDIX A Example on the use of the attributes: pamAvailableLinkCapacity, pamMaxProvisionableCapacity, pamPotentialLinkCapacity, pamProvisionedLinkCapacity Scenario description: a SDH VC4 layer is server for a VC12 and a VC3 l
41、ayer. Initial state: VC12 and VC3 links (respectively linkEnds) exist but are not associated with trail (respectively networktTTP). 12 Recommendation G.853.8 (03/99) STD-ITU-T RECMN G-853-8-ENGL L999 m 48b2591 Obb1280 868 I VC4 trail or networkTTP VC12 link or link end VC3 link or link end not assoc
42、iated + VC4 trail or networkTTP pamMaxProvisionableCapacity: O VC12 link or link end VC3 link or link end pamPotentialLinkCapacity: O pamProvisionedLinkCapacity: O set up - pamAvailableLinkCapacity: O VC4 trail or networkTTP pamMaxProvisionableCapacity: O pamPotentialLinkCapacity: O VC12 link or lin
43、k end VC3 link or link end pamProvisionedLinkCapacity: O pamAvailableLinkCapacity: O set up State 1 : a VC4 trail has been associated with client links or link ends. pamMaxProvisionableCapacity: 63 pamPotentialLinkCapacity: 2 1 pamProvisionedLinkCapacity : 2 1 parn Availablelinklapacity: 2 1 pamProv
44、isionedLinkCapacity : 1 pamAvailableLinkCapacity: 1 pamMaxProvisionableCapacity: 63 VC4 trail or networkTTP set up pamPotentialLinkCapacity : 63 pamProvisionedLinkCapacity : O VC12 link or link end VC3 link or link end pamMaxProvisionableCapacity: 63 pamMaxProvisionableCapacity: 3 pamAvailableLinkCa
45、pacity: O pamPotentialLinkCapacity : 2 1 pamProvisionedLinkCapacity: 2 1 State 2: a VC3 link connection has been provisioned. pamPotentialLinkCapacity: 1 pamProvisionedLinkCapacity : 1 pamMaxProvisionableCapacity: 3 pamPotentialLinkCapacity: 3 pamAvailableLinkCapacity: 16 pamProvisionedLinkCapacity:
46、 O pamAvailableLinkCapacity : O pamAvailableLinkCapacity: 1 VC4 trail or networkTTP set up VC12 link or link end pamMaxProvisionableCapacity: 63 pamPotentialLinkCapacity: 42 pamProvisionedLinkCapacity: O pamAvailableLinkCapacity: O State 3 : 2 1 VC 12 link connections have been provisioned. VC3 link
47、 or link end I pamMaxProvisionableCapacity : 3 pamPotentialLinkCapacity: 2 pamProvisionedLinkCapacity: 1 pamAvailableLinkCapacity: 1 pamMaxProv i s ionab leCapac ity : 3 pamPotentialLinkCapacity: 1 State 4: 5 VC 12 link connections have been assigned or involved in subnetwork connections. Recommenda
48、tion 6.853.8 (03/99) 13 Series A Series B Series C Series D Series E Series F Series G Series H Series I Series J Series K Series L Series M Series N Series O Series P Series Q Series R Series S Series T Series U Series V Series X Series Y Series Z ITU-T RECOMMENDATIONS SERIES Organization of the wo
49、rk of the ITU-T Means of expression: definitions, symbols, classification General telecommunication statistics General tariff principles Overall network operation, telephone service, service operation and human factors Non-telephone telecommunication services Transmission systems and media, digital systems and networks Audiovisual and multimedia systems Integrated services digital network Transmission of television, sound programme and other multimedia signals Protection against interference
