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1、ICEBERG:AnInternet-coreNetworkArchitectureforIntegratedCommunicationsHelenJ.Wang,BhaskaranRaman,RahulBiswas,Chen-neeChuah,RamakrishnaGummadi,BarbaraHohlt,XiaHong,EmreKiciman,ZhuoqingMao,JimmyS.Shih,LakshminarayananSubramanian,BenY.Zhao,AnthonyD.Josep
2、h,RandyH.Katzhttp://iceberg.cs.berkeley.edu/Contact:helenjw@cs.berkeley.eduComputerScienceDivision,U.C.BerkeleyAbstract—IntheICEBERGprojectatU.C.Berkeley,wearedevelop-tivationforintegratingservicesacrossheterogeneousde-inganInternet-basedintegrationo
3、ftelephonyanddataservicesspanningvicesfromdiversenetworks.diverseaccessnetworks.Ourprimarygoalsareextensibility,scalability,ro-bustnessandpersonalizedcommunication.WeleveragetheInternet'slowServiceMobility:Thisreferstoseamlessmobilityacrosscostofent
4、ryforservicecreation,deploymentandintegration.Inthisar-differentdevicesinthemiddleofaservicesession(forex-ticle,wepresentoursolutionstosignaling,easyservicecreation,resourceample,switchingfromacell-phonetoanIP-Phoneinthereservation,admissioncontrol,b
5、illingandsecurityintheICEBERGnet-middleofaconversation).workarchitecture.Keywords—integratedcommunication,servicecreation,scalability,EasyServiceCreationandCustomization:Thedesignavailability,faulttolerance,customization,clustercomputingplatform,sig
6、-ofthesignalingprotocoldirectlyaffectstheeaseofim-naling,resourcereservation,admissioncontrol,billing,security,privacy,plementingcallprocessingservices,suchascallforward-authentication.ing,callwaiting,etc.Easyservicecreationalsorequiresthesystem'sass
7、istanceforresourcereservation,admissionI.INTRODUCTIONcontrolandintegratedbillingforthenewservices.Ser-vicecustomizationrequiresuserpreferencemanagementTelecommunicationsnetworksaremigratingtowardsInternetanduseractivitytracking.technology,withvoiceov
8、erIPmaturingrapidly.WebelievethatthekeyopenchallengefortheconvergednetworkoftheScalability,AvailabilityandFaultTolerance:Weaimtoscaleoursystemincrementallytosupportalargeuserbasenearfutureisitssupportfordiverseaccesstechnologies(such(i.e.,largegeogr
