The ACD program basically processes the incoming calls by the principle the first called the first answered. In its turn, Intelligent ACD works slightly different and allows directing calls depending on the caller’s identification, dialed number, the time of a day and other users’ parameters, available in IVR (Interactive Voice Response). Some of programs are able to recognize the caller by the voice.
The service that most owners look for is VoIP or voice over internet protocol. This service allows the user to make long distance calls using the standard internet connection