Abstract: A system comprising: a first user device and at least a second user device for a same user, at least one of the first and second user devices being a household media appliance, and each being installed with a respective instance of a communication client application for conducting voice or video calls over a packet-based network. Each instance is associated with a same user identifier identifying the same user, a first of the instances is associated with a first subidentifier, and a second of the instances is associated with a second subidentifier. The instances are configured so as, during an ongoing call conducted over a first network connection established based on the user identifier and the first sub-identifier, after the call has been answered, to establish a second network connection based on the user identifier and the second sub-identifier and to switch the call to the second network connection.

Abstract: A television appliance comprising: a television receiver for receiving television signals and outputting the television signal of a selected channel to a screen; a network interface for accessing a packet-based network; a memory storing a communication client application; and processing apparatus arranged to execute the communication client application. The client application is configured to maintain a list of contacts and allow a user of the media appliance to establish communication events with the contacts via the network interface and packet-based network.

Abstract: A system comprising: a first user device and at least a second user device for a same user, at least one of the first and second user devices being a household media appliance, and each being installed with a respective instance of a communication client application for conducting voice or video calls over a packet-based network. Each instance is associated with a same user identifier identifying said same user, a first of said instances is associated with a first sub-identifier, and a second of said instances is associated with a second sub-identifier. The instances are configured so as, during an ongoing call conducted over a first network connection established based on said user identifier and the first sub-identifier, after the call has been answered, to establish a second network connection based on said user identifier and the second sub-identifier and to switch the call to the second network connection.

Abstract: A television appliance comprising: a television receiver for receiving television signals and outputting the television signal of a selected channel to a screen; a network interface for accessing a packet-based network; a memory storing a communication client application; and processing apparatus arranged to execute the communication client application. The client application is configured to maintain a list of contacts and allow a user of the media appliance to establish communication events with the contacts via the network interface and packet-based network.