On opening PSTN to enhanced voice/data services - The PINT protocol solution

This paper describes the original PSTN/Internet INTernetworking (PINT) model, as defined by its namesake working group in the Internet Engineering Task Force (IETF). It then focuses on the building blocks from which a broad range of intelligent network (IN)-initiated services can be built. The PINT approach systematically uses the IN as the means of uniting the public switched telephone network (PSTN) and the Internet, which is natural since intelligent networking is a data communications technology. One goal of this paper is to show how the PINT initiative is bringing network intelligence to the edge of the network.