ITU-T G.1040 (02 2006) (英) Network contribution to transaction time

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1、InternationalTelecommunicationUnionITU-TG.1040TELECOMMUNICATION(02/2006)STANDARDIZATIONSECTOROFITUSERIESG:TRANSMISSIONSYSTEMSANDMEDIA,DIGITALSYSTEMSANDNETWORKSQualityofserviceandperformance–Genericanduser-relatedaspectsNetworkcontributiontotransactiontimeITU-TRecommendationG.1040ITU-TG-SERIESRECO

2、MMENDATIONSTRANSMISSIONSYSTEMSANDMEDIA,DIGITALSYSTEMSANDNETWORKSINTERNATIONALTELEPHONECONNECTIONSANDCIRCUITSG.100–G.199GENERALCHARACTERISTICSCOMMONTOALLANALOGUECARRIER-G.200–G.299TRANSMISSIONSYSTEMSINDIVIDUALCHARACTERISTICSOFINTERNATIONALCARRIERTELEPHONEG.300–G.399SYSTEMSONMETALLICLINESGENERALCHA

3、RACTERISTICSOFINTERNATIONALCARRIERTELEPHONESYSTEMSG.400–G.449ONRADIO-RELAYORSATELLITELINKSANDINTERCONNECTIONWITHMETALLICLINESCOORDINATIONOFRADIOTELEPHONYANDLINETELEPHONYG.450–G.499TRANSMISSIONMEDIACHARACTERISTICSG.600–G.699DIGITALTERMINALEQUIPMENTSG.700–G.799DIGITALNETWORKSG.800–G.899DIGITALSECTI

4、ONSANDDIGITALLINESYSTEMG.900–G.999QUALITYOFSERVICEANDPERFORMANCE–GENERICANDUSER-RELATEDG.1000–G.1999ASPECTSTRANSMISSIONMEDIACHARACTERISTICSG.6000–G.6999DATAOVERTRANSPORT–GENERICASPECTSG.7000–G.7999ETHERNETOVERTRANSPORTASPECTSG.8000–G.8999ACCESSNETWORKSG.9000–G.9999Forfurtherdetails,pleaserefertot

5、helistofITU-TRecommendations.ITU-TRecommendationG.1040NetworkcontributiontotransactiontimeSummaryThisRecommendationdefinesanewperformancemetricfornetworksthattransportshortdatatransactions,suchasthoseassociatedwithcreditcardsandotherpoint-of-saletransactions.Themainfactorscontributingtotransactio

6、ntimearepacketnetworkperformanceandhostprocessingtime.Thenewmetriciscallednetworkcontributiontotransactiontime(NCTT),anditusespackettransferperformancelevels(suchasround-triptimeandpacketlossratio)asinputsinordertoestimatetheportionoftransactiontimeattributabletothenetworkalone.Sincethisistheport

7、ionunderthecontrolofthenetworkoperator,knowledgeofthisvalueisusefulforoperatorsandusersalike.ThescopeofthisRecommendationislimitedtotheperformanceofthepathbetweenuser-networkinterfaces(UNI-UNI)anduseslimitedconfigurati