Context-Aware Communication (CAC) services enable end-devices or service platforms to adapt their comportment to sensed context information, either instantly or in a deferred way. There is today no available framework for supporting the development of CAC applications in a generic way. After surveying previous works, we propose here a new approach for classifying context-aware communication systems. Relying on this approach, we design a comprehensive framework based on a distributed service broker for the development of such systems. We validate this framework by implementing a prototype and by testing it.