I am looking for a device/software application that can simulate the
passing of call data - specifically a 911 ANI/ALI stream - over a
serial port or TCP/IP.

I am hindered by the fact that I only have a basic understanding of
telephony. I do not necessarily need a switch or even a device,
perhaps just a piece of software that can simulate the passing of a
text stream that can subsequently be  pulled into another application.

I have looked at devices such as Intel's CSTA Switch Simulator and
they seem like overkill and costly for what I need. In my mind, there
must be software that can do this and preferably the inexpensive type.

Thanks.