A system and method for providing an integrated messaging service

The present invention relates to a system and method for providing an instant messaging service, short message service, multimedia message service, voice over IP and PoC Unified Messaging service that can replace or be used in a variety of services and interchangeably as such. To this end, the invention IM services, SMS, MMS, Voice over IP, and either can use various services interchangeably alternative elements of the unified messaging services that can be integrated messaging clients, such as PoC, and Unified Messaging server architectures and interfaces and to the definition. In particular, the present invention is to provide a way to extend the technology of the IP Multimedia Core Network (hereinafter, referred to IMS) for enabling interworking between each of the services in the application layer. Also, define the data store to support Unified Messaging Unified Messaging services, and to suggest ways to manage the messages and metadata stored in the definition storage. IM, PoC, MMS, SMS, message services