Devices, softwares and methods for handing off live calls between legs of CSV and VOX modalities
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United States of America Patent
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Feb 21, 2006
Grant Date -
N/A
app pub date -
Feb 28, 2002
filing date -
Feb 28, 2002
priority date (Note) -
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Abstract
Devices, softwares methods hand off a live call from an original leg of a first modality (such as Circuit Switched Voice) to an alternate leg of another modality (such as Voice over Internet Protocol). An original leg of a call is established using the first modality. Then the alternate leg of the call is established using the second modality, while the first leg is still established. Then the call is handed off from the original leg to the alternate leg, while the connection is active.
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