TechnicalNotes.docx
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TechnicalNotes.docx
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TechnicalNotes
CallVisorLAN(CVLAN)isanapplicationprogramminginterface(API)thatenablesapplications
tocommunicatewithCommunicationManager.
TelephonyService(TS)isawebservicethatexposesbasicoutboundcallcontrolfeaturesof
CommunicationManager.TelephonyServiceisoneofthewebservicesthatresidesontheApplicationEnablement
Servicesplatform(AEServices).
DEFINITYLANGateway(DLG)isasoftwareservicethattunnelstheASAIcallcontrolprotocol
messagesontoIPpacketsfortransportbetweenacustomerComputerTelephonyIntegration
(CTI)serverorapplicationandCommunicationManager.
AdjunctSwitchApplicationInterface(ASAI)linksCommunicationManagerandadjunct
applications.TheinterfaceallowsadjunctapplicationstoaccessCommunicationManager
featuresandsupplyroutinginformationtothesystem.
ASAIistheAvayarecommendationforComputerTelephonyIntegration(CTI).ASAIisbased
ontheQ.932protocol.
G.722是支持比特率为64,56和48kbps多频率语音编码算法。
在G.722中,语音信号的取样率为每秒16000个样本。
采样频率:
16KHz
语音频率:
8KHz
语音自身所需的数据传输带宽:
8KHzX8bits=64kbps
H.323基于包传输的多媒体通信系统
G.711音频压缩(mu-law)
G.722音频压缩(宽带)
G.722.1音频压缩(宽带,低码率)
G.722.2语音压缩AMR-WB(宽带,低码率)
G.711―64kbps信道上的语音频率脉冲编码调制(PCM)
G.722―64kbit/s下的7kHz音频编码
G.722.1―带有低帧损耗的具有免提操作的系统在24kbit/s和32kbit/s上的编码
G.722.2―利用自适应多频率宽带(AMR-WB)以16kbit/s多频率语音编码
G.711representslogarithmicpulse-codemodulation(PCM)samplesforsignalsofvoicefrequencies,
sampledattherateof8000samples/second.Thestandardwasreleasedforusagein1972.
G.722sampleaudiodataatarateof16kHz(using14bits),
doublethatoftraditionaltelephonyinterfaces,whichresultsinsuperioraudioqualityandclarity.
G.722.1andG.722.2.ThesecodecsarenotvariantsofG.722andtheyusedifferentpatentedcompressiontechnologies.
G.729isanaudiodatacompressionalgorithmforvoicethatcompressesdigitalvoiceinpacketsof10millisecondsduration.
G.729operatesatabitrateof8kbit/s
TheSessionInitiationProtocol(SIP)isasignalingprotocol,widelyusedforcontrollingmultimediacommunicationsessions
suchasvoiceandvideocallsoverInternetProtocol(IP).
TheSIPprotocolisanApplicationLayerprotocoldesignedtobeindependentoftheunderlyingtransportlayer;
itcanrunonTransmissionControlProtocol(TCP),UserDatagramProtocol(UDP),orStreamControlTransmissionProtocol(SCTP).
Itisatext-basedprotocol,incorporatingmanyelementsoftheHypertextTransferProtocol(HTTP)andtheSimpleMailTransferProtocol(SMTP),
allowingfordirectinspectionbyadministrators.
Throughavastnetworkofpartnerships,AvayaCommunicationManagerprovidessupportforvirtuallyanyapplicationonthenetworkbyutilizing:
End-to-endstandardsintegration
TheLinuxbasedCommunicationManagersoftwareprovidesintegrationofold(TSAPI,JTAPI)andnew(CSTA,Web)standards.Thisallowsflexibilitytoembedcommunicationsintoreal-timebusinessprocesses.
FullcoverageofthelatestSIPstandards
CommunicationManagerprovidesanopenSIPandH.323callmodelwithSIP/SIMPLEpresenceandinstantmessagingextensions.Thisapproachprovidesseamlessintegrationofvoiceintootherapplicationsandflexibilitytointegratethirdpartyendpointsandapplications
CSTA-CompliantWebServicesInterface
ComputerSupportedTelecommunicationsApplications(CSTA)isanopen,webservicesinterfaceforbusiness-to-businessapplicationintegrationthatdeliversaccesstothefullfunctionalityofCommunicationManagerandCallCentersoftware.
WhyisfullcoverageofthelatestSIPstandardsimportanttoCommunicationManager?
Thisisaprotocolusedtosupportcallcentersoftware.
Thisapproachprovidesseamlessintegrationofvoiceintootherapplicationsandflexibilitytointegratethirdpartyendpointsandapplications.
Thisprotocolisusedforgatewayadministration.
SIPisapriorityprotocoltoAvayausedtointegrateamixedvendorenvironment.
Correct!
H.225:
ProtocolusedtocontrolendpointIPphone.
Astechnologychangesandbusinessesgrow,theneedforcommunicationsystemstoworkwithequipmentfrommultiplevendorswhileprovidinggrowthoptionsisessential.CommunicationManagerincorporatesfunctionalityandsupportforequipmentthatallowscustomerstogrowwhileutilizingexistingequipment.
CommunicationManagerisdesignedtomeettraditionalvoiceexpectationsforsurvivability,reliabilityandsecurity.Proactivemanagement,selfhealingfeaturesandend-to-endglobalservicessupportahighlyavailableinfrastructurethroughoutanextendedenterprise.
∙AvayaCommunicationManagerisapowerfulcall-processingandapplicationsenginethatdeliverstraditionaltelephonyfeaturesandconvergedvoicesolutions.
∙CommunicationManagerrunsonavarietyofserversandintegratescallprocessing,callcontrol,messaging,contactcentermanagement,andanapplicationprogramminginterface.
∙CommunicationManagercreatesahighlyscalablearchitecturedesignedtosupportbothcircuit-basedandIP-basedtelephonywithinadistributedenterprisecommunicationsnetwork.
Astechnologychanges,businessesneedcommunicationsystemstointegrateintoexistingnetworkswhileprovidingoptionsforgrowth.
CommunicationManagerisahighlyscalablesolutionwhichallowscustomerstoleverageexistingequipmentwhilegrowingtheircommunicationsnetwork
Traditionally,companiestreatedtheirvoicesystemsasaseparatenetworkascomparedtothenetworkwhichcarriesdatatraffic.WiththecreationofIPtelephony,companieshavetheoptionofusingthesamenetworkinfrastructuretosupportbothdataandvoiceapplications.
CommunicationManagerisdesignedtoprovideinterconnectionofbothtraditionalanalog,digital,andIPcommunicationdevicesinasinglecommunicationsenvironment.
H.323providingCommunicationManagertheabilitysupportmulti-vendorsandapplications.
Leveragingexistingequipmentwhileprovidingoptionsforgrowthisvitalintoday’smarketplace.
SmalltoMediumEnterprises–TheAvayaS8300andS8400Serversandtheircorrespondingmediagatewayssupportsfrom2-1300endusersdependingontheconfiguration.
MediumtoLargeEnterprisesTheAvayaS8500Serversupportsavarietyofmediagatewaysandportnetworks.Thissolutionhastheabilitytoeasilyscalesupportupto3200users.
LargeEnterprises–TheAvayaS8700SeriesServersdrivesupportforlargeenterprises.S8700SeriesServer,givesthissolutiontheabilitytoserveupto36000ports
TheIPSIisacircuitpackthatprovidesforclockgenerationandclocksynchronization,andtonegenerationandtonedetectioninS87XXandS8500Serverconfigurations
center-stageswitch
Thecentralinterfacebetweentheprocessorportnetwork(PPN)andtheexpansionportnetworks(EPNs)inav-connectedsystem.
∙AvayaS8300ServersandAvayaCommunicationManager provideflexibilityandreliabilityforgrowingcompanies.Thisserver supportsupto 900ports.
∙TheAvayaS8400Serverprovides AvayaCommunication Managerfunctionalityinstandalone,singleportnetwork,andtelephonysystems.Thisserversupportsupto1300ports.
∙TheAvayaS8500ServerprovidesasolutionthatsupportsaTDP/IMenvironmentinorderforenterprisestore-useandleveragetheirinvestmentingatewaysandTNcircuit-packs.Thisserversupportsupto3200ports.
∙TheS8700-SeriesServersusehigh-speedconnectionstoroutevoice,data,andvideobetweentrunksandlines.Theseservers supportupto44000ports.
ProcessorEthernet– ProcessorEthernet(PE)providesconnectivitytoIPendpoints,gatewayandadjuncts.TheProcessorEthernetinterfaceisalogicalconnectionintheCommunicationManagersoftwarethatusesaportontheNetworkInterfaceCard(NIC)intheserver.NoadditionalhardwareisneededtoimplementPE.
PortNetworkConnectivity–ControlNetworksarethenetworksoverwhichserversexchangesignalingdatawiththeportnetworksthroughIPSIcircuitpacks.WithCommunicationManager3.0andhigher,functionalityisextendedtosimplifynetworkconfigurationsbyallowingbothIP-PNCandfiber-PNCinasingleconfiguration.ThisallowsenterprisestoattachIP-connected,ATM-connectedandcenter-stageswitchconnectedportnetworkstotheirS8700SeriesorS8500Servers.
Megaco(officiallyH.248)isanimplementationoftheMediaGatewayControlProtocolarchitecture[1]forcontrollingMediaGatewaysonInternetProtocol(IP)networksandthepublicswitchedtelephonenetwork(PSTN).
MegacodefinestheprotocolforMediaGatewayControllerstocontrolMediaGatewaysforthesupportofmultimediastreamsacrosscomputernetworks.ItistypicallyusedforprovidingVoiceoverInternetProtocol(VoIP)services(voiceandfax)betweenIPnetworksandthePSTN,orentirelywithinIPnetworks.
controlnetworks
TheconnectionsoverwhichcontrolsignalingpassesbetweenaCommunicationManagerserverandanH.248mediagatewayoraportnetwork.
ControlNetworkC–Avayahasenhancedtheflexibilityofcontrolnetworksforportnetworkattachmenttosupportcombinationofportnetworks.InadditiontoprivatecontrolnetworksAandB,the“CustomerLAN”(ControlNetworkC)interface allowsportnetworkcontroltraffictotraversethe"CorporateInterface"whichwasformerlyreservedforadministrativetrafficonly. ControlNetworkCfunctionalityisusefulwhenanenterpriseisaddingdistributedportnetworksatremotesites,whenCNAandCNBarenotconnectedtothepublic(Enterprise)network.
ConnectionPreservation–TheConnectionPreservingMigration(CPM)featurepreservesexistingbearer(voice)connec
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