common gateway interface(A server-side interface for initiating software services. For example, a set of interfaces that describe how a Web server communicates with software on the same computer. Any software can be a CGI program if it handles input and output according to the CGI standard)
Computer Supported Telecommunications Applications(An international standard established by the European Computer Manufacturers Association (ECMA) that specifies an application's interface and protocols for monitoring and controlling calls and devices in a communications network)