ITU-T F.16(02-1995) (英) Global virtual network service

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1、INTERNATIONALTELECOMMUNICATIONUNION)45 4&TELECOMMUNICATION(02/95)STANDARDIZATIONSECTOROFITU/0%2!4)/.3!.$15!,)49/&3%26)#%4%,%'2!0(3%26)#%3',/"!,6)245!,.%47/2+3%26)#%)45 4Recommendation&(Previously“CCITTRecommendation”)FOREWORD

2、TheITU-T(TelecommunicationStandardizationSector)isapermanentorganoftheInternationalTelecommunicationUnion(ITU).TheITU-Tisresponsibleforstudyingtechnical,operatingandtariffquestionsandissuingRecommen-dationsonthemwithaviewtostandardizingtelecommunicati

3、onsonaworldwidebasis.TheWorldTelecommunicationStandardizationConference(WTSC),whichmeetseveryfouryears,establishesthetopicsforstudybytheITU-TStudyGroupswhich,intheirturn,produceRecommendationsonthesetopics.TheapprovalofRecommendationsbytheMembersofthe

4、ITU-TiscoveredbytheprocedurelaiddowninWTSCResolutionNo.1(Helsinki,March1-12,1993).ITU-TRecommendationF.16waspreparedbyITU-TStudyGroup1(1993-1996)andwasapprovedundertheWTSCResolutionNo.1procedureonthe21stofFebruary1995.___________________NOTEInthisReco

5、mmendation,theexpression“Administration”isusedforconcisenesstoindicatebothatelecommunicationadministrationandarecognizedoperatingagency.ãITU1995Allrightsreserved.Nopartofthispublicationmaybereproducedorutilizedinanyformorbyanymeans,electronicormechani

6、cal,includingphotocopyingandmicrofilm,withoutpermissioninwritingfromtheITU.CONTENTSRecommendationF.16(02/95)Page1Definition................................................................................................................................

7、.......................11.1Scope................................................................................................................................................11.2References.............................................................

8、............................................................................11.3Definitions........................................................................................................................................11.4Abbreviation