METHOD, SYSTEM AND COMPUTER PROGRAM TO ENABLE SEMANTIC MEDIATION FOR SIP EVENTS THROUGH SUPPORT OF DYNAMICALLY BINDING TO AND CHANGING OF APPLICATION SEMANTICS OF SIP EVENTS

摘要

An event notification system includes a data communications network (18), at least one event server (20) coupled to the data communications network and at least one subscriber (12) coupled to the data communications network. The subscriber is operable to send a subscribe message to the event server, the subscribe message containing information for specifying at least one application semantic. The event server is operable to generate a first notification to the subscriber upon the at least one application semantic being satisfied and to generate a second notification to the subscriber upon a change in the specified application semantic, thereby enabling an occurrence of a substitution of the specified application semantic with another application semantic.