Here is a list of all struct and union fields with links to the structures/unions they belong to:

### - f -

- FacilityIE : Q931
- FacilityMsg : Q931
- FacilityNotImplemented : IAX2IeCauseCode
- FacilityNotSubscribed : IAX2IeCauseCode
- FacilityRejected : IAX2IeCauseCode, Q931
- Factory : OpalRecordManager
- Failure : IAX2IeCauseCode
- Failure_AddressIncomplete : SIP_PDU
- Failure_Ambiguous : SIP_PDU
- Failure_BadEvent : SIP_PDU
- Failure_BadExtension : SIP_PDU
- Failure_BadGateway : SIP_PDU
- Failure_BadRequest : SIP_PDU
- Failure_BusyHere : SIP_PDU
- Failure_Conflict : SIP_PDU
- Failure_ExtensionRequired : SIP_PDU
- Failure_Forbidden : SIP_PDU
- Failure_Gone : SIP_PDU
- Failure_InternalServerError : SIP_PDU
- Failure_IntervalTooBrief : SIP_PDU
- Failure_LengthRequired : SIP_PDU
- Failure_LoopDetected : SIP_PDU
- Failure_MessageTooLarge : SIP_PDU
- Failure_MethodNotAllowed : SIP_PDU
- Failure_NotAcceptable : SIP_PDU
- Failure_NotAcceptableHere : SIP_PDU
- Failure_NotFound : SIP_PDU
- Failure_NotImplemented : SIP_PDU
- Failure_PaymentRequired : SIP_PDU
- Failure_ProxyAuthenticationRequired : SIP_PDU
- Failure_RequestEntityTooLarge : SIP_PDU
- Failure_RequestPending : SIP_PDU
- Failure_RequestTerminated : SIP_PDU
- Failure_RequestTimeout : SIP_PDU
- Failure_RequestURITooLong : SIP_PDU
- Failure_ServerTimeout : SIP_PDU
- Failure_ServiceUnavailable : SIP_PDU
- Failure_SIPVersionNotSupported : SIP_PDU
- Failure_TemporarilyUnavailable : SIP_PDU
- Failure_TooManyHops : SIP_PDU
- Failure_TransactionDoesNotExist : SIP_PDU
- Failure_UnAuthorised : SIP_PDU
- Failure_Undecipherable : SIP_PDU
- Failure_UnresolvableDestination : SIP_PDU
- Failure_UnsupportedMediaType : SIP_PDU
- Failure_UnsupportedURIScheme : SIP_PDU
- FalklandIslands : OpalLineInterfaceDevice
- fastResponseRequired : H323Transaction
- FastStartOptionDisable : OpalConnection
- FastStartOptionEnable : OpalConnection
- FastStartOptionMask : OpalConnection
- Fax() : OpalMediaStatistics::Fax
- FaxCompression : OpalMediaStatistics
- FaxCompressionT4_1d : OpalMediaStatistics
- FaxCompressionT4_2d : OpalMediaStatistics
- FaxCompressionT6 : OpalMediaStatistics
- FaxCompressionUnknown : OpalMediaStatistics
- FaxErrorBase : OpalMediaStatistics
- FaxInProgress : OpalMediaStatistics
- FaxMessageWaiting : OpalManager
- FaxNotStarted : OpalMediaStatistics
- FaxSuccessful : OpalMediaStatistics
- fci : RTP_ControlFrame::FbTMMB, RTP_ControlFrame::FbTSTO, RTP_ControlFrame::FbFIR
- FeatureBase : H460_Feature
- FeatureBaseAll : H460_Feature
- FeatureBaseRas : H460_Feature
- FeatureBaseSignal : H460_Feature
- FeatureCategory : H460_Feature
- FeatureDesired : H460_Feature
- FeatureInstance : H460_Feature
- FeatureNeeded : H460_Feature
- FeatureRas : H460_Feature
- features : H323EndPoint, H323Connection, H323Gatekeeper
- FeatureSetDisable() : H323EndPoint
- FeatureSetDisabled() : H323EndPoint
- FeatureSignal : H460_Feature
- FeatureSupported : H460_Feature
- Fiji : OpalLineInterfaceDevice
- file : OpalFileMediaStream
- Filter() : OpalMediaPatch::Filter
- FilterFrame() : OpalMediaPatch
- FilterNotifier : OpalRTPSession
- filters : OpalMediaPatch
- finalFrames : OpalMediaPatch::Sink
- Finalise() : H235Authenticator
- FinaliseForking() : SIPTransactionOwner
- FindBy() : SIPHandlersList
- FindCall() : H323GatekeeperServer
- FindCallWithLock() : OpalManager
- FindCapability() : H323EndPoint, H323Capabilities
- FindChannel() : H245NegLogicalChannels, H323Connection
- FindChannelBySession() : H245NegLogicalChannels
- FindCompatible() : SIPURLList
- FindConnectionWithLock() : H323EndPoint
- FindContextByIdWithLock() : OpalIMEndPoint
- FindContextByNamesWithLock() : OpalIMEndPoint
- FindContextForMessageWithLock() : OpalIMEndPoint
- FindDestinationEndPoint() : H323GatekeeperServer
- FindEndPoint() : OpalManager
- FindEndPointAs() : OpalManager
- FindEndPointByAliasAddress() : H323GatekeeperServer
- FindEndPointByAliasString() : H323GatekeeperServer
- FindEndPointByIdentifier() : H323GatekeeperServer
- FindEndPointByPartialAlias() : H323GatekeeperServer
- FindEndPointByPrefixString() : H323GatekeeperServer
- FindEndPointBySignalAddress() : H323GatekeeperServer
- FindEndPointBySignalAddresses() : H323GatekeeperServer
- FindFormat() : SDPMediaDescription, OpalMediaFormatList
- FindHandlerByPDU() : SIPEndPoint
- FindIntermediateFormat() : OpalTranscoder
- FindListener() : OpalEndPoint
- FindListenerForProtocol() : OpalEndPoint
- FindNegLogicalChannel() : H245NegLogicalChannels
- FindNode() : OpalMixerNodeManager
- FindNodeInfo() : OpalMixerEndPoint
- FindOption() : OpalMediaFormat, OpalMediaFormatInternal
- FindOptionAs() : OpalMediaFormat
- FindSessionByLocalPort() : OpalRTPConnection
- FindSIPHandlerByAuthRealm() : SIPHandlersList
- FindSIPHandlerByCallID() : SIPEndPoint, SIPHandlersList
- FindSIPHandlerByDomain() : SIPHandlersList
- FindSIPHandlerByUrl() : SIPHandlersList
- FinishOutputFrame() : OpalRFC4175Encoder
- Finland : OpalLineInterfaceDevice
- firmwareVer : IAX2IeData
- firstMediaFrame : IAX2CallProcessor
- firstOctet : H281VideoSource
- firstPacketReceived : OpalRTPSession
- firstPacketSent : OpalRTPSession
- flags : PluginCodec_Definition
- Flash : OpalRFC2833Info
- flashhook : IAX2FullFrameSessionControl
- Flush() : DahdiLineInterfaceDevice::ChannelInfo, OpalBitRateCalculator
- FlushData() : OpalRTPSession
- fnName : OpalPluginControl
- FocusDirection : H281_Frame
- FocusIn : H281_Frame
- FocusOut : H281_Frame
- forceIFrame : OpalVideoTranscoder
- ForceIFrame() : OpalVideoTranscoder
- forceIsTransportable : OpalMediaFormatInternal
- ForceSymmetricTCS() : H323EndPoint
- format : IAX2IeData
- formatName : OpalMediaFormatInternal
- formats : SDPMediaDescription
- ForwardCall() : SIPConnection, OpalConnection, IAX2Connection, H323Connection
- ForwardConnection() : SIPEndPoint, H323EndPoint
- fraction : RTP_ControlFrame::ReceiverReport
- fractionLost : OpalRTPSession::ReceiverReport
- Frame() : OpalPCAPFile::Frame
- FrameHeader : OpalVideoTranscoder
- FrameHeightOption() : OpalVideoFormat
- FrameIncrementsInSeqNo() : IAX2FullFrame
- frameList : IAX2Processor
- FrameMap : OpalJitterBuffer
- FrameTimeOption() : OpalMediaFormat
- frameType : IAX2Frame
- FrameWidthOption() : OpalVideoFormat
- France : OpalLineInterfaceDevice
- FreeOptions_s() : PluginCodec< NAME >
- freeOptionsControl : OpalPluginTranscoder, OpalPluginMediaFormatInternal
- FrenchPolynesia : OpalLineInterfaceDevice
- FrenchSouthernAndAntarcticLands : OpalLineInterfaceDevice
- fromDestination : Q931
- fromNetworkFrames : IAX2Receiver
- fromRemote : H323ChannelNumber
- FromString() : SIPDialogContext, SIPURLList, OpalMediaCryptoKeyInfo, OpalMediaOption
- FromURI : SIPURL
- FS1016 : RTP_DataFrame
- FullTSAP : OpalTransportAddress
- fwBlockData : IAX2IeData
- fwBlockDesc : IAX2IeData
- FXSChannelInfo() : DahdiLineInterfaceDevice::FXSChannelInfo