Skype Limited

Sergei Anikin

Madis Kaal

Andres Kütt

Natasha Valerie Sopieva

Scott Miller

Neil Dodd

A method of controlling a connection between a user terminal and an access node connected to a communication network is provided. The user terminal establishes a data connection with the access node, periodically generates a message at predetermined intervals and transmits the periodic message to at least one network node via the access node over the communication network. Responses to the periodic messages are received from the at least one network node. The responses are analyzed to determine whether to terminate the connection to the access node, and in the case that the connection to the access node should be terminated, a disconnect message is transmitted to the access node from the user terminal.

Communication system and method

A method of accessing a first communication system of a first communication provider via a packet-based network, the first communication system maintaining a first list of contacts being users of the first communication system. The method comprises establishing a contact-sharing channel with a second communication system of a second, partner communication provider, wherein the second communication system is accessible via an independently executable web-browser and the packet-based network, and wherein the second communication system maintains second group of contacts being users of the second communication system. The contact-sharing channel is used to fetch contact information of one or more of the second contacts, so as to display at least part of the fetched contact information in the client application and establish a communication based on at least part of the fetched contact information.

Integrating communications

A method of controlling a connection between a user terminal and an access node connected to a communication network is provided. The user terminal establishes a data connection with the access node, periodically generates a message at predetermined intervals and transmits the periodic message to at least one network node via the access node over the communication network. Responses to the periodic messages are received from the at least one network node. The responses are analysed to determine whether to terminate the connection to the access node, and in the case that the connection to the access node should be terminated, a disconnect message is transmitted to the access node from the user terminal.

A method of authenticating a user terminal with an access node providing restricted access to a communication network is provided. The method comprises the user terminal transmitting a request for an authentication token to a trusted network node via an unrestricted channel on the access node, the request comprising a network identity for a user of the user terminal. The network node verifies the identity of the user using the network identity, generates an authentication token and transmits the authentication token to the user terminal via the unrestricted channel. The user terminal derives login information from the authentication token and provides the login information to the access node. The access node authenticates the login information and removes the restricted access such that the communication network can be accessed by the user terminal.

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Tallinn, Estonia

Sergei Anikin