Call/Messaging Open API for Telecommunication Services

With the saturation of existing intelligent network services, it is becoming increasingly difficult to develop new profitable services. The current trend seems to be moving toward the convergence of traditional telephone networks with the Internet. The capabilities of Internet terminals, such as PCs, are more powerful than those of traditional terminals for telephone networks, particularly in terms of their storage capabilities and user interface. IT developers can easily create new telecommunication services using Parlay APIs, without needing to become experts in the field of telephony. Although using SOAP over HTTP allows for easier communication, normal individual developers have some difficulties in processing SOAP messages due to the verbose XML format. REST based APIs can be a good alternative, as they have no additional messaging layer except for HTTP. In this paper, we introduce REST based Open APIs for building outbound call and messaging services. The suggested APIs enable the service features of click-to-dial, mini-conference, call record, audio-on-demand, short messaging and voice messaging, and show the power of the convergence between telephone networks and the internet.