System and method for mobile station authentication using session initiation protocol (SIP)
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United States of America Patent
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Jan 18, 2005
Grant Date -
Jan 16, 2003
app pub date -
Jul 13, 2001
filing date -
Jul 13, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A system and method for transmitting CDMA call set-up parameters including authentication parameters through an IP-based infrastructure to an authenticating entity. A base station encapsulates, in SIP messages, CDMA data from wireless communication devices, with the headers of the messages indicating the presence of the CDMA-specific data in the message body. The SIP messages are routed through the infrastructure to an IS41 gateway, which strips the CDMA-specific data from the SIP messages and sends the necessary data to the authenticating entity for setting up a CDMA call.
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