Implementing online feature interaction detection in SIP environment: early results

The article proposes a solution for detecting feature interactions (FI) at runtime in SIP-based IP telephony architectures. The solution takes into account the special context of SIP that permits end user programmability, which means the possibility for end users to design their own tailored services and personalize them as much as they like. Programmability implies that services are roomed and run in the end user devices. This renders more frequent the so called multi-component FI situations, where conflicting services reside in different network components. This type of FI is the more complicated one. The presented solution is handled by FIMA, a feature interaction management agent that is introduced as a central network manager. We focus on the implementation requirements of an online detection method. The proposed solution deals with multi-component FI situations as well as another FI situation type, called single-component.