| http://www.w3.org/ns/prov#value | - A further example of a selection is to require a caller to accept all long-distance charges for calls during a designated time interval. [0021] In some embodiments of the invention, options presented to the subscriber are not universal but rather are determined by characteristics associated with the subscriber, such as, for example, credit worthiness, usage or location. [0022] In one embodiment ac
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