Nokia Corporation

Nokia Mobile Phones Limited

Jussi Lemilainen

Markku Matias Rautiola

Markku Niemi

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 () 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.

System and device for accessing of a mobile communication network

A wireless intranet office (WIO) concept is disclosed, which integrates an IP based Intranet environment () and GSM network providing mobile telephones () with access to GSM through the GSM network or via the intranet. Access through the intranet to the GSM MSC () is provided by a WIO interworking unit () which may comprise several network entities (e.g. intranet mobile cluster (), intranet location register (), WIO gatekeeper (), WIO gateway () and H.323 gateway). A dual mode terminal for such a system is also disclosed.

Dual mode terminal for accessing a cellular network directly or via a wireless intranet

A wireless intranet office (WIO) concept is disclosed, which integrates an IP based intranet environment () and GSM network providing mobile telephones () with access to GSM through the GSM network or via the intranet. Access through the intranet to the GSM MSC () is provided by a WIO interworking unit () which may comprise several network entities (e.g. intranet mobile cluster (), intranet location register (), WIO gatekeeper (), WIO gateway () and H.323 gateway). A dual mode terminal for such a system is also disclosed.

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Arlington, MA, United States of America

Jussi Lemilainen