以下是 TAPI 3.x 调用和媒体控制接口。 有关按功能列出的这些接口的列表，请参阅 调用和媒体控件快速参考。
- IEnumAddress
- IEnumBstr
- IEnumCall
- IEnumCallHub
- IEnumCallingCard
- IEnumLocation
- IEnumParticipant
- IEnumPhone
- IEnumPluggableSuperclassInfo
- IEnumPluggableTerminalClassInfo
- IEnumTerminal
- IEnumTerminalClass
- IH323LineEx
- IKeyFrameControl
- IMulticastControl
- ITAddress
- ITAddress2
- ITAddressCapabilities
- ITAddressDeviceSpecificEvent
- ITAddressEvent
- ITAddressTranslation
- ITAddressTranslationInfo
- ITAllocatorProperties
- ITAMMediaFormat
- ITASRTerminalEvent
- ITAudioDeviceControl
- ITAudioSettings
- ITAutomatedPhoneControl
- ITBasicAudioTerminal
- ITBasicCallControl
- ITBasicCallControl2
- ITCallHub
- ITCallHubEvent
- ITCallInfo
- ITCallInfo2
- ITCallInfoChangeEvent
- ITCallingCard
- ITCallMediaEvent
- ITCallNotificationEvent
- ITCallQualityControl
- ITCallStateEvent
- ITCollection
- ITCollection2
- ITCustomTone
- ITDetectTone
- ITDigitDetectionEvent
- ITDigitGenerationEvent
- ITDigitsGatheredEvent
- ITDispatchMapper
- ITFileTerminalEvent
- ITFileTrack
- ITFormatControl
- ITForwardInformation
- ITForwardInformation2
- ITLegacyAddressMediaControl
- ITLegacyAddressMediaControl2
- ITLegacyCallMediaControl
- ITLegacyCallMediaControl2
- ITLegacyWaveSupport
- ITLocalParticipant
- ITLocationInfo
- ITMediaControl
- ITMediaPlayback
- ITMediaRecord
- ITMediaSupport
- ITMultiTrackTerminal
- ITParticipant
- ITParticipantControl
- ITParticipantEvent
- ITParticipantSubStreamControl
- ITPhone
- ITPhoneDeviceSpecificEvent
- ITPhoneEvent
- ITPluggableTerminalClassInfo
- ITPluggableTerminalClassRegistration
- ITPluggableTerminalEventSink
- ITPluggableTerminalEventSinkRegistration
- ITPluggableTerminalInitialization
- ITPluggableTerminalSuperclassInfo
- ITPluggableTerminalSuperclassRegistration
- ITPrivateEvent
- ITQOSApplicationID
- ITQOSEvent
- ITRequest
- ITRequestEvent
- ITScriptableAudioFormat
- ITStaticAudioTerminal
- ITStreamQualityControl
- ITTAPI
- ITTAPI2
- ITTAPICallCenter
- ITTAPIEventNotification
- ITTAPIObjectEvent
- ITTAPIObjectEvent2
- ITToneDetectionEvent
- ITToneTerminalEvent
- ITTTSTerminalEvent
如果 MSP 与调用关联，则以下接口可用。 MSP 接口控制呼叫的媒体流式处理和终端。
- ITStream （MSPI）
- ITStreamControl （MSPI）
- ITSubStream （MSPI）
- ITSubStreamControl （MSPI）
- ITTerminal （MSPI）
- ITTerminalEvent （MSPI）
- ITTerminalSupport （MSPI）