Abstract: A calling and called telecommunications station are each connected to a packet access network. The packet access network under the control of a server system, determines whether an originating call should be routed via a core packet network, such as the Internet, or a Public Switched Telephone Network (PSTN). If the expected delay of packets through the core packet network is excessive, then the call will be connected through the Public Switched Telephone Network. If, during the course of a call, the packet delay becomes excessive, and causes the quality of voice transmission to be below acceptable standards, the call is switched from the packet network to the Public Switched Telephone Network. Advantageously, as many calls as can be handled by the packet network are switched through that network, thus resulting in substantial savings to the customer. Advantageously, the embedded PSTN can be used productively to handle overflows from the core packet network.

Abstract: The system for enhanced caller identification delivery extends the capabilities of existing caller ID systems by providing delivery of the caller ID data, received from the calling party's Local Exchange, to the called subscriber whether the called subscriber is located at their assigned telephone line or at another location. This system also provides the optional capability for the calling party to provide a brief message for transmission to the called subscriber along with the traditional caller ID data.

Abstract: The voice-print based voice message screening system enables a calling party to leave a voice message for the identified subscriber without the need to input any additional information. When the subscriber receives a voice message from a calling party, the subscriber can elect to add the calling party to the subscriber's calling party screening list by activating the voice-print based voice message screening system to register the calling party. The voice-print based voice message screening system stores data indicative of the subscriber's listed directory number, the calling party's number, the identity of the calling party as characterized by the subscriber, and also stores a small set of determined speech characteristics to identify the calling party. On a subsequently received call for the subscriber, the voice-print based voice message screening system analyzes the calling party's voice based on one or more parameters that can be managed by the subscriber to identify the calling party.