Pervasive systems are designed to make communication possible anytime, anyhow and anywhere. These systems must be used in different contexts depending on the environment of the user, his profile and his device. The mutualization of the means of communication and the tendency towards all multimedia caused a major problem of heterogeneity of the multimedia flows exchanged between the components of such a system. In this paper we propose a typing of connectors proposed in the MMSA approach (Metamodel for Multimedia Software Architecture), thus an implementation of the various concepts proposed by this approach, which aims is to facilitate communication between heterogeneous components. A case study of the multimedia messaging service (MMS) is presented at the end of this paper to highlight the proposal.