| http://www.w3.org/ns/prov#value | - h have been notified as available, to find the best one and change to it; (l) during the process of link establishment, the requestor and provider check that each is authorised to communicate with the other; (m) during the process of link establishment, the uplink device contacts the gateway to obtain a list of channels which can and cannot be used, and any other data or parameters such as maximum
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