ITU-T I.365.3 (11 1995) (英) B-ISDN ATM adaptation layer sublayers……

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1、INTERNATIONALTELECOMMUNICATIONUNION,787,TELECOMMUNICATION(11/95)STANDARDIZATIONSECTOROFITU,17(*5$7('6(59,&(6',*,7$/1(7:25.,6'129(5$//1(7:25.$63(&76$1')81&7,216%,6'1$70$'$37$7,21/$<(568%/$<(566(59,&(63(&,),&&225',1$7,21)81&7,21723529,'(7+(&211(&7,212

2、5,(17('75$1632576(59,&(,7875HFRPPHQGDWLRQ,(Previously“CCITTRecommendation”)FOREWORDTheITU-T(TelecommunicationStandardizationSector)isapermanentorganoftheInternationalTelecommunicationUnion(ITU).TheITU-Tisresponsibleforstudyingtechnical,operatingandtariffquestionsandissuingRecom

3、men-dationsonthemwithaviewtostandardizingtelecommunicationsonaworldwidebasis.TheWorldTelecommunicationStandardizationConference(WTSC),whichmeetseveryfouryears,establishesthetopicsforstudybytheITU-TStudyGroupswhich,intheirturn,produceRecommendationsonthesetopics.TheapprovalofRecommendationsb

4、ytheMembersoftheITU-TiscoveredbytheprocedurelaiddowninWTSCResolutionNo.1(Helsinki,March1-12,1993).ITU-TRecommendationI.365.3waspreparedbyITU-TStudyGroup13(1993-1996)andwasapprovedundertheWTSCResolutionNo.1procedureonthe2ndofNovember1995.___________________NOTEInthisRecommendation,theexpress

5、ion“Administration”isusedforconcisenesstoindicatebothatelecommunicationadministrationandarecognizedoperatingagency.ãITU1996Allrightsreserved.Nopartofthispublicationmaybereproducedorutilizedinanyformorbyanymeans,electronicormechanical,includingphotocopyingandmicrofilm,withoutpermissioninwrit

6、ingfromtheITU.CONTENTSRecommendationI.365.3(11/95)Page1Scope..............................................................................................................................................................12NormativeReferences....................................................

7、................................................................................13Definitions......................................................................................................................................................24Abbreviat