I3 is Interactive Intelligence Inc. ININ is their stock symbol.
They make phone system software specializing in the call center arena. We are not using it in a call center environment but it IS infinitely customizable.
It is all IP based and will be using it all three offices, job sites and mobile workers. They don't sell phones, they support anything that runs SIP. We will be using Polycom 430 phones.
We looked at all the major vendors and this was by far the best solution for us. I can't wait till turn this up and start working with business processes.