With rapid advances in multimedia processing technologies, and in high bandwidth network technologies, new kinds of multimedia applications are now emerging. These applications require real-time, multimedia, and multipoint interactions involving multiple communicating entities and leading to a need of more sophisticated communication control functionalities. In this paper, a generic integrated and flexible service management architecture for multimedia multipoint communications is proposed, which offers three main generic functions, namely Quality of Service (QoS) negotiation, QoS monitoring and control, and session management.