Distributed storage of collaboration data is managed over internal and external data stores in a collaboration service environment based on categorization of the data. In a preferred aspect, the xenon acts as an NMDA antagonist. When exposed to Hydrogen, the composition’s emission rate increases. The first layer so-exposed is then removed to expose the region of the conductive layer thereunder. In one embodiment, the first PTT network is an iDEN network and the second PTT network is a HPPTT network and the PTT call is a HPPTT call. This is done by defining a user vector space, a sensor vector space and a reported vector space.