Method of informing a callee of an attempted telephone call by means of internet protocol messaging

摘要: (57) ABSTRACT A method is provided for communication between a tele phone caller and a callee of the telephone call in the event of an attempted public switched telephone network (PSTN) call within the PSTN. The attempted call may result from deliberate failure of the callee to answer the telephone or may result from a failure of the PSTN to route the call to the callee. The method includes the linking of a public Switched telephone network with an Internet domain network via a PSTN/Internet domain network interface; and upon detec tion of the attempted PSTN call, having the PSTN inform the Internet domain network interface to provide an message in real time to the intended recipient of the PSTN call via an Internet protocol message. In the case of a PSTN network failure to deliver the call, the PSTN may inform the Internet domain network interface to provide the message in real time via an Internet protocol to …