| http://www.w3.org/ns/prov#value | - Signaling messages are needed for example for setting up, maintaining and releasing a telephone connection, transmitting call numbers, caller and call charge information, transmitting routing information for 0130, 0180 and 0190 numbers, extended functions such as call forwarding and conference calls, and the exchange of information between network operators on such things as the location of a mobi
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