4-1Meridian IVR VT100 Gateway Development Guide Product release 2.0/IChapter 4: IVR 2.0/I call flow interfaceNow that you understand how to script VT100 transactions as action andscreen templates, you can begin integrating these templates into your IVR2.0/I Applications (Figure 4-1).Figure 4-1Accessing the mainframeThis chapter explains• how to code your applications to perform VT100 transactions• how to use the COMI, COMO, and COMA cells to communicate withthe host computer (using the accounting application developed in theprevious chapters as an example)Using the COMI, COMO, and COMA cells to access the hostcomputerWith IVR 2.0/I, the links between the IVR 2.0/I call flow and the TRS are theCOM cells. The COMI cell sends input to the TRS process and identifies theaction template file, the COMO cell receives output from the TRS process,and the COMA cell aborts a transaction in progress (usually used in theclean-up branch in case a caller hangs up before the transaction completes).Figure 4-2 illustrates this interaction.Call FlowLogical TerminalSessionUSER orCOMI/COMOCellsTRSProcess
