Computer and Telephony technology has been merging since the introduction of CTI. The resulting products and services enhance both the Telephony and computer market and also create new applications. An example of existing CTI technologies and applications include intelligent PBX's (Private Branch Exchange), ACDs (Automatic Call Distribution Centers), fax servers, IVR (Interactive Voice Response), voice processing, and messaging. Most businesses today use service or products based on IP technology. Call centers, reservation networks, credit card authorizations, customer support lines and the facilities depend on these technologies to the point where downtime of even a minute can result in significant loss of revenues. The next emerging opportunity with IP (Internet Protocol) will be integration with CTI, creating IP Telephony solutions that will change the way we all communicate.