Method for a session initiation protocol push-to-talk terminal to indicate answer operating mode to an internet protocol push-to-talk network server
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United States of America Patent
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Oct 9, 2007
Grant Date -
Nov 17, 2005
app pub date -
Apr 12, 2005
filing date -
Apr 13, 2004
priority date (Note) -
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Abstract
A push-to-talk communication device including an operating answer mode indicates that operating answer mode to a Session Initiation Protocol/Internet Protocol based push-to-talk network server. The method includes employing as the operating answer mode of the push-to-talk communication device one of an automatic-answer mode, an always-automatic-answer mode and a manual-answer mode. A Session Initiation Protocol/Internet Protocol core network is employed including a Session Initiation Protocol/Internet Protocol push-to-talk network server. The operating answer mode is indicated in a Session Initiation Protocol message from the push-to-talk communication device to the Session Initiation Protocol/Internet Protocol push-to-talk network server over the Session Initiation Protocol/Internet Protocol core network.
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