IVR system should store responses made by callers. Should be able to provide different responses to callers based on time of day called. Should be able to capture either touch-tone or voice responses by callers. If you know the extension number you'd like, push button that extension now and you'll be transferred. Or wait a few seconds and the call operator will come on anyway.
Some people react well to automated attendants.
A system which stores messages spoken by a user usually over a telephone, which can be retrieved by the intended recipient when that person next calls into the system. Also called Voice Mail, it operates just like a touch-tone controlled answering machine. Resellers - companies that sell the IVR equipment and software developed by manufacturers and software vendors. The focus of these companies is in providing customized solutions and support that may not be available from the manufacuters. Specialized Software vendors - these companies focus on developing IVR software solutions.