ITU-T G.764 (12 1990) (英) Voice packetization - Packetized voice protocols

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1、INTERNATIONALTELECOMMUNICATIONUNION##)44'THEINTERNATIONALTELEGRAPHANDTELEPHONECONSULTATIVECOMMITTEE'%.%2!,!30%#43/&$)')4!,42!.3-)33)/.3934%-34%2-).!,%15)0-%.436/)#%0!#+%4):!4)/.0!#+%4):%$6/)#%02/4/#/,32ECOMMENDATION'Geneva,1990FOREWORDTheCCITT(theInternationalTelegrapha

2、ndTelephoneConsultativeCommittee)isapermanentorganoftheInternationalTelecommunicationUnion(ITU).CCITTisresponsibleforstudyingtechnical,operatingandtariffquestionsandissuingRecommendationsonthemwithaviewtostandardizingtelecommunicationsonaworldwidebasis.ThePlenaryAssemblyofCCITTwhichmeetseveryfourye

3、ars,establishesthetopicsforstudyandapprovesRecommendationspreparedbyitsStudyGroups.TheapprovalofRecommendationsbythemembersofCCITTbetweenPlenaryAssembliesiscoveredbytheprocedurelaiddowninCCITTResolutionNo.2(Melbourne,1988).RecommendationG.764waspreparedbyStudyGroupXVandwasapprovedundertheResolution

4、No.2procedureonthe14ofDecember1990.___________________CCITTNOTEInthisRecommendation,theexpression“Administration”isusedforconcisenesstoindicatebothatelecommunicationAdministrationandarecognizedprivateoperatingagency.ãITU1990Allrightsreserved.Nopartofthispublicationmaybereproducedorutilizedinanyform

5、orbyanymeans,electronicormechanical,includingphotocopyingandmicrofilm,withoutpermissioninwritingfromtheITU.RecommendationG.764RecommendationG.764VOICEPACKETIZATION—PACKETIZEDVOICEPROTOCOLES1IntroductionThisRecommendationdefinesapacketvoiceprotocolforspeechpacketizationinpermanentvirtualcircuitappli

6、cations.Theprincipalapplicationofthepacketizedvoiceprotocol(PVP)isattheprimaryrateandinfractionalprimaryrateapplications.Theprotocoldefinesformatsandproceduresforthetransportofvoiceinformationandchannelassociatedsignallingoverawidebandpacketnetwork.TheRecommendationaccommodatesadditionalfuturetypes

7、includingoptionalinternetworkingcapabilitieswiththedigitalcellularradionetworkingapplicationscurrentlyunderdevelopment.TheextensionofthisRecommendationforbasebandfacsimiletrafficiscurrentlyunderstudy.ThisRe