### - f -

- fastResponseRequired : H323Transaction
- fastStartChannels : H323Connection
- fastStartMediaStream : H323Connection
- fastStartState : H323Connection
- fieldParameters : SIPURL
- file : OpalRecordManager::Mixer_T , OpalFileMediaStream
- filters : OpalMediaPatch
- finalFrames : OpalMediaPatch::Sink
- firmwareVer : IAX2IeData
- first : OpalRFC4175Decoder , RTP_UDP , OpalAudioMixerStream
- firstMediaFrame : IAX2CallProcessor
- firstOctet : H281VideoSource
- firstRead : OpalAudioMixer
- firstReadData : OpalJitterBuffer
- flags : PluginCodec_Definition
- fmtp : SDPMediaFormat
- fnName : OpalPluginControl
- forkedInvitations : SIPConnection
- format : IAX2IeData
- formatName : OpalMediaFormatInternal
- formats : SDPMediaDescription
- forwardParty : SIPConnection
- fraction : RTP_ControlFrame::ReceiverReport
- fractionLost : RTP_Session::ReceiverReport
- frameCache : OpalAudioMixerStream
- frameHeight : OpalRFC4175Encoder , OpalRFC4175Decoder
- frameLengthMs : OpalAudioMixer
- frameLengthSamples : OpalAudioMixer::MixerFrame
- frameList : IAX2Processor
- frameQueue : OpalAudioMixerStream
- frameType : IAX2Frame
- frameWidth : OpalRFC4175Decoder , OpalRFC4175Encoder
- freeFrames : OpalJitterBuffer
- freeOptionsControl : OpalPluginMediaFormatInternal
- fromDestination : Q931
- fromNetworkFrames : IAX2Receiver
- fromRemote : H323ChannelNumber
- fwBlockData : IAX2IeData
- fwBlockDesc : IAX2IeData