| http://www.w3.org/ns/prov#value | - st information transmission start/end request upon a call connection from said originating station accommodated in a predetermined switching node, comprising the steps of:causing said network to have a hierarchical structure, said hierarchical structure having at least one mth-layer, where m is a positive integer of not less than 2, said mth-layer further including a plurality of (m-1)-layer subne
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