Abstract: A method and apparatus are presented for transmitting, from an application computer in communication with a gatekeeper which is connected to a data network, messages indicative of telephone calls in progress at an endpoint of the data network, or indicative of such endpoint, and transmitting, from the gatekeeper to the application computer, messages indicative of a variety of information contained in the telephone calls so as to process such information for a variety of applications. The invention contains a method for providing to a user of the system information relative to the incoming caller and to the subject of the call.

Abstract: A method is presented comprising transmitting, from an application computer communicably connected to a call controller which is connected to a data network, packetized messages indicative of telephone calls in progress at an endpoint of the data network, or indicative of such endpoint, and transmitting, from the call controller to the application computer, packetized messages indicative of a variety of information contained in, or relevant to, the telephone calls so as to process such information for a variety of applications. Apparatus to implement the method is also presented.

Abstract: An improved computer telephony (CT) server which utilizes a standard message structure to communicate with applications, but may interface such applications to a variety of different telephony environments by translating the standard message structure used by such applications into the specific message structure required by each such telephony environment. The aforementioned telephony environments may include PBXs, ACDs, packet telephony environments and public switched telephone networks. The desired telephony environment may be chosen by the application, or by the computer telephony server, some combination of both, or entirely automatically.

Abstract: A computer telephony interface (CTI) applications computer interfaces to a Internet telephony system which utilizes, preferably, the session initiation protocol (SIP). In one preferred technique, an additional pass through server is added to connect end users to their associated SIP proxy server, and to connect a CTI applications computer to the system.

Abstract: Techniques for a communications web services system are described.