METHOD AND APPARATUS FOR ESTABLISHING A VOICE CALL TO A PSTN EXTENSION FOR A NETWORKED CLIENT COMPUTER

摘要

A method and apparatus for integrating packet networks and public networks for providing voice communications. The method uses client computers oeprating with WEB servers over the Public Switched Telecommunications Network (140) and the Internet (150). WEB servers (112) provide event notification to client computers (108) and Public Switched Telecommunications Network extensions (142) are identified using directory services for establishing a voice connection over the Public Switched Telecommunications Network and Internet.