Multimedia subsystem service control for circuit-switched subsystem calls
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United States of America Patent
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Jun 26, 2012
Grant Date -
Mar 15, 2007
app pub date -
Aug 22, 2006
filing date -
Aug 22, 2005
priority date (Note) -
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Abstract
The present invention allows calls that are controlled by a multimedia subsystem (MS) to employ bearer paths that are supported in whole or in part by a circuit-switched subsystem (CS). As such, calls controlled by the MS can have a portion of the bearer path provided through the CS when needed or desired. To facilitate such control, a session control signaling path is established between a user element currently supported by the CS and a remote user agent (RUA), which represents the user element in the MS. While a portion of the bearer path for the call is supported by the CS, the session control signaling path extends the reach of the MS to the user element.
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