Togewa Holding Ag

Peter Zbaeren

Walter Heutschi

Toni Stadelmann

The invention relates to a method and a system for IP-based telephony and video conferencing between at least one IP node () and a second terminal (). According to said method, authentication data is transmitted from an identification module () of the IP nodes () and registration data is transmitted to a registration module (). The IP node () is authenticated using an authentication module () and a home location registry (). Corresponding location data is stored in the location database and is forwarded to the identification module () of the IP node (). Said IP node () is then released for IP based telephony or video telephony.

Access method in a WLAN for an IP mobile telephone with authentication by means of an HLR

A method for setting up a data link including requesting an identity of an IP network node by a registration module, transmitting an International Mobile Subscriber Identity (IMSI) stored on a Subscriber Identity Module (SIM) card of the IP network node to the registration module, storing the received IMSI in a user database of the registration module, complementing an IP data channel to form signal and data channels of a GSM network by a signaling gateway module, using the complemented IP data channel as a basis for generating the necessary SS7/MAP functions for authenticating the IP network node, authenticating the IP network node by using the IMSI of the SIM card of the IP network node, receiving an entry in the user database of the registration module upon successful authentication, and setting up a data link to at least some of the network nodes.

Switching system and corresponding method for unicast or multicast end-to-end data and/or multimedia stream transmissions between network nodes

A method for setting up a data link including the steps of requesting an identity of an IP network node by a registration module; transmitting an International Mobile Subscriber Identity (IMSI) stored on a Subscriber Identity Module (SIM) card of the IP network node to the registration module, storing the received IMSI in a user database of the registration module, complementing an IP data channel to form signal and data channels of a GSM network by a signaling gateway module, using the complemented IP data channel having GSM data as a basis for generating the necessary SS7/MAP functions for authenticating the IP network node, authenticating the IP network node by using the IMSI of the SIM card of the IP network node, receiving an appropriate entry in the user database of the registration module upon successful authentication, and setting up a data link to the at least some of the network nodes by the control module of the central connecting unit.

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Kaufdorf, Switzerland

Peter Zbaeren