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时间:2019-10-18
《ITU-TG.1050(112007)(英)Networkmodelforevaluating…….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、InternationalTelecommunicationUnionITU-TG.1050TELECOMMUNICATION(11/2007)STANDARDIZATIONSECTOROFITUSERIESG:TRANSMISSIONSYSTEMSANDMEDIA,DIGITALSYSTEMSANDNETWORKSQualityofserviceandperformance–Genericanduser-relatedaspectsNetworkmodelforevaluatingmultimediatransmissionperforman
2、ceoverInternetProtocolITU-TRecommendationG.1050ITU-TG-SERIESRECOMMENDATIONSTRANSMISSIONSYSTEMSANDMEDIA,DIGITALSYSTEMSANDNETWORKSINTERNATIONALTELEPHONECONNECTIONSANDCIRCUITSG.100–G.199GENERALCHARACTERISTICSCOMMONTOALLANALOGUECARRIER-G.200–G.299TRANSMISSIONSYSTEMSINDIVIDUALCHA
3、RACTERISTICSOFINTERNATIONALCARRIERTELEPHONEG.300–G.399SYSTEMSONMETALLICLINESGENERALCHARACTERISTICSOFINTERNATIONALCARRIERTELEPHONESYSTEMSG.400–G.449ONRADIO-RELAYORSATELLITELINKSANDINTERCONNECTIONWITHMETALLICLINESCOORDINATIONOFRADIOTELEPHONYANDLINETELEPHONYG.450–G.499TRANSMISS
4、IONMEDIAANDOPTICALSYSTEMSCHARACTERISTICSG.600–G.699DIGITALTERMINALEQUIPMENTSG.700–G.799DIGITALNETWORKSG.800–G.899DIGITALSECTIONSANDDIGITALLINESYSTEMG.900–G.999QUALITYOFSERVICEANDPERFORMANCE–GENERICANDUSER-RELATEDG.1000–G.1999ASPECTSTRANSMISSIONMEDIACHARACTERISTICSG.6000–G.69
5、99DATAOVERTRANSPORT–GENERICASPECTSG.7000–G.7999PACKETOVERTRANSPORTASPECTSG.8000–G.8999ACCESSNETWORKSG.9000–G.9999Forfurtherdetails,pleaserefertothelistofITU-TRecommendations.ITU-TRecommendationG.1050NetworkmodelforevaluatingmultimediatransmissionperformanceoverInternetProtoc
6、olSummaryITU-TRecommendationG.1050describesamodelforevaluatingmultimediatransmissionperformanceoveranIPnetwork.Itisastatisticalmodelinwhichlikelihoodofoccurrencevaluesareassignedtoallnetworkelementsandimpairments.Testresultsusingthesestatisticalmodelsareexpressedintermsofnet
7、workmodelcoverage.TestingtoacomprehensivestatisticalmodelsuggestshowcommunicationsdevicesmayperformoveranIPnetworkintermsofnetworkmodelcoverage.ThisRecommendationfocusesontheimpactofimpairmentsonlayer3performance.IPstreamsfromanytypeofnetworkdevicecanbeevaluatedusingthismode
8、l.Emphasisisgiventothefactthatmanufacturersofcommunicationsequipmentandserv
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