As VoIP is close to make the final steps that will move it beyond the "early adopter" stage, This work discusses the stakes and constraints that one needs to take into account when selecting VoIP protocols. It provides a gap analysis between operators' requirements and protocols such as SIP, H.323, BICC, MGCP, MEGACO and their variants.
In this exploratory design study, we present DoDoc: a system that enables users to collect and keep traces of embodied activities using four different media. DoDoc has been designed to support learning by doing pedagogies by collecting digital material for reflection during making or playing activities. We report the results of the deployment of DoDoc… (More)