ITU-T E.450(03 1993) (英) Facsimile quality of service on public……

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1、3UPERSEDEDBYAMORERECENTVERSIONINTERNATIONALTELECOMMUNICATIONUNION)45 4%TELECOMMUNICATION(03/93)STANDARDIZATIONSECTOROFITU4%,%0(/.%.%47/2+!.$)3$.15!,)49/&3%26)#%.%47/2+-!.!'%-%.4!.$42!&&)#%.').%%2).'&!#3)-),%15!,)49/&3%26)#%/.034.'%.%2!,!30%#43)45 4Recomm

2、endation%Supersededbyamorerecentversion(Previously“CCITTRecommendation”)3UPERSEDEDBYAMORERECENTVERSION&/2%7/2$TheITUTelecommunicationStandardizationSector(ITU-T)isapermanentorganoftheInternationalTelecom-municationUnion.TheITU-Tisresponsibleforstudyingtechnical,operatingandtariffquestio

3、nsandissuingRecommendationsonthemwithaviewtostandardizingtelecommunicationsonaworldwidebasis.TheWorldTelecommunicationStandardizationConference(WTSC),whichmeetseveryfouryears,establishedthetopicsforstudybytheITU-TStudyGroupswhich,intheirturn,produceRecommendationsonthesetopics.ITU-TRecommendationE

4、.450waspreparedbytheITU-TStudyGroupII(1988-1993)andwasapprovedbytheWTSC(Helsinki,March1-12,1993).___________________NOTES1AsaconsequenceofareformprocesswithintheInternationalTelecommunicationUnion(ITU),theCCITTceasedtoexistasof28February1993.Initsplace,theITUTelecommunicationStandardizationSector(

5、ITU-T)wascreatedasof1March1993.Similarly,inthisreformprocess,theCCIRandtheIFRBhavebeenreplacedbytheRadiocommunicationSector.InordernottodelaypublicationofthisRecommendation,nochangehasbeenmadeinthetexttoreferencescontainingtheacronyms“CCITT,CCIRorIFRB”ortheirassociatedentitiessuchasPlenaryAssembly

6、,Secretariat,etc.FutureeditionsofthisRecommendationwillcontaintheproperterminologyrelatedtothenewITUstructure.2InthisRecommendation,theexpression“Administration”isusedforconcisenesstoindicatebothatelecommunicationadministrationandarecognizedoperatingagency.ãITU1993Allrightsreserved.Nopartofthispub

7、licationmaybereproducedorutilizedinanyformorbyanymeans,electronicormechanical,includingphotocopyingandmicrofilm,withoutpermissioninwritingfromtheITU.3UPERSEDEDBYAMORERECENTVERSION#/.4%.430AGE1Purpose........