ITU-TI.413(031993)(英)B-ISDNuser-networkinterface.pdf

《ITU-TI.413(031993)(英)B-ISDNuser-networkinterface.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、INTERNATIONALTELECOMMUNICATIONUNION)45 4)TELECOMMUNICATION(03/93)STANDARDIZATIONSECTOROFITU).4%'2!4%$3%26)#%3$)')4!,.%47/2+)3$.)3$.53%2 .%47/2+).4%2&!#%3" )3$.53%2 .%47/2+).4%2&!#%)45 4Recommendation)(Previously“CCITTRecommendation”)FOREW

2、ORDTheITUTelecommunicationStandardizationSector(ITU-T)isapermanentorganoftheInternationalTelecom-municationUnion.TheITU-Tisresponsibleforstudyingtechnical,operatingandtariffquestionsandissuingRecommendationsonthemwithaviewtostandardizingtelecommunicationsonaworldwi

3、debasis.TheWorldTelecommunicationStandardizationConference(WTSC),whichmeetseveryfouryears,establishedthetopicsforstudybytheITU-TStudyGroupswhich,intheirturn,produceRecommendationsonthesetopics.ITU-TRecommendationI.413wasrevisedbytheITU-TStudyGroupXVIII(1988-1993)an

4、dwasapprovedbytheWTSC(Helsinki,March1-12,1993).___________________NOTES1AsaconsequenceofareformprocesswithintheInternationalTelecommunicationUnion(ITU),theCCITTceasedtoexistasof28February1993.Initsplace,theITUTelecommunicationStandardizationSector(ITU-T)wascreateda

5、sof1March1993.Similarly,inthisreformprocess,theCCIRandtheIFRBhavebeenreplacedbytheRadiocommunicationSector.InordernottodelaypublicationofthisRecommendation,nochangehasbeenmadeinthetexttoreferencescontainingtheacronyms“CCITT,CCIRorIFRB”ortheirassociatedentitiessucha

6、sPlenaryAssembly,Secretariat,etc.FutureeditionsofthisRecommendationwillcontaintheproperterminologyrelatedtothenewITUstructure.2InthisRecommendation,theexpression“Administration”isusedforconcisenesstoindicatebothatelecommunicationadministrationandarecognizedoperatin

7、gagency.ãITU1993Allrightsreserved.Nopartofthispublicationmaybereproducedorutilizedinanyformorbyanymeans,electronicormechanical,includingphotocopyingandmicrofilm,withoutpermissioninwritingfromtheITU.CONTENTSRecommendationI.413(03/93)Page1Introduction................

8、....................................................................................................................................12Referenceco