System and device for accessing of a mobile communication network
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United States of America Patent
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Mar 10, 2009
Grant Date -
N/A
app pub date -
Sep 15, 2000
filing date -
Mar 18, 1998
priority date (Note) -
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Abstract
A system, wherein a mobile station can switch to an IP access protocol, whereupon data transmitted between the mobile station and a mobile services switching centre change over from a base station system, reached using radio communication, to being transmitted through an interworking unit (40) coupled in connection with an IP connection and the mobile services switching centre. When the mobile station switches to the access network, it transfers the dynamic data relating to the mobile station's state and the calls in progress (state machine) to the interworking unit.
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