Application background Section shows and describes a call flow for a successful call using the Cisco ATA and MGCP. ThisNote: term Cisco ATA refers to both the Cisco ATA and 186 the Cisco ATA The 188, otherwise stated. unless Key Technology C-1 on page C-2 illustrates a basic call flow between two Cisco ATAs through a VocalData Call FigureAgent.C-1 on page C-3 describes the action the Cisco ATA takes for each step in the call flow illustration TableIncludes the log created by each step. and