Dynamic session transfer number for voice call continuity
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United States of America Patent
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Jun 5, 2018
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N/A
app pub date -
Nov 21, 2014
filing date -
Dec 3, 2013
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Abstract
A method in a network node for voice call continuity is disclosed. The network node receives, from a second network node with which a wireless device having a first session transfer number has registered, a registration notification message including a second session transfer number dynamically assigned to the wireless device by the second network node for voice call continuity. The network node stores the dynamically assigned second session transfer number. The network node receives a network query message sent in response to a mobile switching center receiving a call origination message from the wireless device, the call origination message including the first session transfer number as a destination. The network node determines that there is an active call involving the wireless device, and sends a network query response message to the mobile switching center that includes the dynamically assigned second session transfer number.
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