| http://www.w3.org/ns/prov#value | - forms at least: a task of storing at least one type of computerized call indications, selected from: computerized call indications for call-originator terminals (Ring Back Tones), computerized call indications for called-receiver terminals (Ring Tones), and combinations of said types of computerized call indications; and a task of transmitting in real time the computerized call indications request
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