Nortel Networks VT100 - Manual (Page 60)

4-1
Meridian IVR VT100 Gateway Development Guide Product release 2.0/I
Chapter 4: IVR 2.0/I call flow interface
Now that you understand how to script VT100 transactions as action and
screen templates, you can begin integrating these templates into your IVR
2.0/I Applications (Figure 4-1).
Figure 4-1
Accessing the mainframe
This chapter explains
• how to code your applications to perform VT100 transactions
• how to use the COMI, COMO, and COMA cells to communicate with
the host computer (using the accounting application developed in the
previous chapters as an example)
Using the COMI, COMO, and COMA cells to access the host
computer
With IVR 2.0/I, the links between the IVR 2.0/I call flow and the TRS are the
COM cells. The COMI cell sends input to the TRS process and identifies the
action template file, the COMO cell receives output from the TRS process,
and the COMA cell aborts a transaction in progress (usually used in the
clean-up branch in case a caller hangs up before the transaction completes).
Figure 4-2 illustrates this interaction.
Call Flow
Logical Terminal
Session
USER or
COMI/COMO
Cells
TRS
Process