Intelligent Network
Intelligent Network : (ICT) (HE, INT) A service-independent, switched overlay network to the public switched telephone network (PSTN), enabling advanced services such as toll-free dialing, virtual private networks (VPNs), call routing and credit/calling card services. A standard architecture for Ins is being defined in efforts of various international bodies such as the European Telecommunications Standards Institute, the International Telecommunication Union and the American National Standards Institute
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