The increased demand for platforms with support for multimedia applications raised the importance of mechanisms for Quality of Service provisioning, since each media has its own processing and communication requirements. SCM Model (Service-Composition Model) provides abstractions for the representation and programming of QoS aspects and multicast in communication services. According to its terminology, the QoS provisioning can be seen as a service provider, where QoS negotiation and QoS maintenance meta services act upon it. The QoS negotiation are the mechanisms responsible for the admission of new user flows, while the QoS maintenance meta service is responsible for maintaining the negotiated level of service during the service operation. Such meta services had been previously described as frameworks modelled in UML. The present work focuses on the architectural description of these meta services using Wright architecture description language (ADL), which allows the use of its analysis and formal verification tools to infer properties. To smooth this approach, a domain-specific language (DSL) called LindaQoS is proposed as a notation closest to the abstraction level of the problem domain, specifically designed to define hierarchies of negotiation and maintenance subsystems. Moreover this work presents a compiler allowing the translation of LindaQoS specifications into architectural descriptions (currently, using Wright) and into programming languages (JAVA in the future).