ITU-T F.125(08-1993) (英) Numbering plan for access……

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1、INTERNATIONALTELECOMMUNICATIONUNION)45 4&TELECOMMUNICATION(08/93)STANDARDIZATIONSECTOROFITU/0%2!4)/.3!.$15!,)49/&3%26)#%-/"),%3%26)#%.5-"%2).'0,!.&/2!##%334/4(%-/"),% 3!4%,,)4%3%26)#%3/&).-!23!4&2/-4(%).4%2.!4)/.!,4%,%83%

2、26)#%)45 42ECOMMENDATION&(Previously“CCITTRecommendation”)FOREWORDTheITU-T(TelecommunicationStandardizationSector)isapermanentorganoftheInternationalTelecommunicationUnion(ITU).TheITU-Tisresponsibleforstudyingtechnical,operatingandtariffquestionsandis

3、suingRecommendationsonthemwithaviewtostandardizingtelecommunicationsonaworldwidebasis.TheWorldTelecommunicationStandardizationConference(WTSC),whichmeetseveryfouryears,establishedthetopicsforstudybytheITU-TStudyGroupswhich,intheirturn,produceRecommendationson

4、thesetopics.TheapprovalofRecommendationsbytheMembersoftheITU-TiscoveredbytheprocedurelaiddowninWTSCResolutionNo.1(Helsinki,March1-12,1993).ITU-TRecommendationF.125wasrevisedbyITU-TStudyGroup1(1993-1996)andwasapprovedundertheWTSCResolutionNo.1procedureonthe31s

5、tofAugust1993.___________________NOTEInthisRecommendation,theexpression“Administration”isusedforconcisenesstoindicatebothatelecommunicationadministrationandarecognizedoperatingagency.ãITU1994Allrightsreserved.Nopartofthispublicationmaybereproducedorutilizedin

6、anyformorbyanymeans,electronicormechanical,includingphotocopyingandmicrofilm,withoutpermissioninwritingfromtheITU.CONTENTSRecommendationF.125(08/93)Page1Introduction..............................................................................................

7、......................................................11.1Purpose.............................................................................................................................................11.2Terminology......................................

8、...............................................................................................11.3Basicconsiderations.....................................................................