Method, Apparatus And Software For Providing Communications Between A Packet Switched Network And A Public Switched Telephone Network

摘要

A method, apparatus and software is disclosed in which a gateway server provides communications between an Internet Protocol (IP) network and Public Switched Telephone Network (PSTN) to enable messaging between an IN server device in the PSTN and a Session Initiation Protocol (SIP) Application Server (AS) on the IP network.