| http://www.w3.org/ns/prov#value | - g party, automatically sending a responsive call initiation message over a voice-bearing path of the cellular network, commanding a user interface to provide an alert to a user, and awaiting an indication of user acceptance. [0025] Another aspect is a method of switching a telephone call comprising receiving a SIP invite message over a data-bearing path of a cellular network, the SIP invite specif
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