Dispatch network with IMS integration
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United States of America Patent
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Jun 4, 2013
Grant Date -
Nov 6, 2008
app pub date -
May 1, 2007
filing date -
May 1, 2007
priority date (Note) -
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Abstract
A wireless communications system includes a radio network facilitating wireless communications with a wireless subscriber unit, a dispatch application server providing dispatch communications services to the subscriber unit via the radio network, and an IP Multimedia Subsystem (IMS) infrastructure including a Proxy-Call Session Control Function (P-CSCF) and a Serving-CSCF (S-CSCF). The P-CSCF notifies the dispatch application server of subscriber unit registration events, allowing the dispatch application server to provide dispatch communications services without initiating a separate registration process. Dispatch communications are routed between the wireless subscriber unit and dispatch application server through the P-CSCF, bypassing the S-CSCF of the IMS infrastructure.
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