IMPROVING VOICE OVER INTERNET PROTOCOL (VOIP) CALL SETUP SUCCESS RATE AND LATENCY
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United States of America Patent
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Issued Date -
Jun 6, 2024
app pub date -
Jun 7, 2021
filing date -
Jun 7, 2021
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Abstract
A method and apparatus improve Voice over Internet Protocol (VOIP) call setup success rate and latency. The method provides for attempting a mobile originated packet switched call, by a user equipment (UE), across a packet switched network with a transmission control protocol (TCP) connection of the Internet Protocol multimedia subsystem (IMS) session. A silent redial of the mobile originated packet switched call is performed in response to a failure of the mobile originated packet switched call, via a circuit switched network. A keep alive message is transmitted over the packet switched network after the circuit switched network call, which allows reconnection to the packet switched network.
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