Testing traditionally focuses on specific aspects of a system separately, such as functional conformance, robustness and performance. In this paper, we present a protocol test automation framework that considers these different viewpoints as a whole. It starts with a common architecture for protocol testing at different scales. A set of test models on top of this architecture are presented for addressing the different types of testing. Each of these models builds on top of another, starting

more »

... conformance testing, followed by robustness testing and finally overall performance testing. We apply the framework to session initiation protocol (SIP).