Abstract: A system connects a plurality of CSTA Clients to a communications system that supports only one CSTA Client at a time, such as a PBX. The system includes a server or other processor programmed to provide a CSTA dialog with each of the plurality of CSTA Clients, and a single CSTA dialog with the PBX.

Abstract: The presently disclosed Demultiplexer Application associated with a server or other processor (S) (collectively “Demultiplexer”) enables a computer telephony Client Application (CA), for example a Computer-Supported Telecommunications Application (CSTA) Client Application, to connect to several Communication Devices (PBX1, . . . ,PBXn) simultaneously, even though the Client is designed to only connect to a single Communication Device. The Demultiplexer provides an interface between the single access Client Application and the multiple Communication Devices simultaneously connected to the Demultiplexer via computer telephony, for example, using CSTA. When the Client Application attempts a an association with a target Communication Device, the Demultiplexer establishes two parallel processes: (1) a dialogue process between the Client Application and the Demultiplexer, and (2) a dialogue process between the target Communication Devices and the Demultiplexer.

Abstract: A system connects a plurality of CSTA Clients to a communications system that supports only one CSTA Client at a time, such as a PBX. The system includes a server or other processor programmed to provide a CSTA dialog with each of the plurality of CSTA Clients, and a single CSTA dialog with the PBX.