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Resource-Oriented Architecture is a new Web service modeling method. Based on Capability-Injection (CI) pattern, ROA could be extended for telecommunication value-added service description and creation. With the CI based ROA requirements analysis, a Pub/Sub based capability injection method is proposed in this paper. The Pub/Sub capability utilization will transform the value-added service control logic from interface control to resource statement monitoring. Therefore, the CI interface can be described as uniformed Pub/Sub method. Finally, a new extended language named RSML-QL is introduced to support the Pub/Sub capability. RSML-QL provides method guarantee for service building based on CI model.