Configurations
of GSM/VoIP networks allow the service providers to avoid the local Wired
Public Switched Network (PSTN) in communication with a GMS mobile handset. As a
result, the high rates charged by telephone companies are avoided.
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.