Abstract: The invention concerns a method of providing a Push-to-Talk (=PTT) service within one or more telecommunication networks (1, 2, 3, 4) by means of a gateway-server (5) which sets up a virtual connection per PTT connection. The virtual connection provides information about the participating terminals (10, 20, 30, 40) of the PTT connection, the service type to reach each terminal (10, 20, 30, 40), and the connection status of each terminal (10, 20, 30, 40). Thus, the gateway-server (5) is capable of providing the PTT service within and/or across different telecommunication networks comprising radio access telecommunication networks (1), fixed wire-line telecommunication networks (2), circuit-switched telecommunication networks (3), and packet-switched telecommunication networks (4).

Abstract: The invention concerns a method for providing features to the user of a telephone (HSA1, . . . HSAn, HSS1, . . . HSSm) that is connected to a central unit (CU) whereby, if said telephone (HSA1, . . . HSAn, HSS1, . . . HSSm) is currently not interconnected via the central unit (CU), said telephone (HSA1, . . . HSAn, HSS1, . . . HSSm) notifies the central unit (CU) at least about certain kinds of user activities, in case of such notification the central unit (CU) checks whether it is currently interconnected to another telephone assigned to the same subscriber as said notifying telephone (HSA1, . . . HSAn, HSS1, . . . HSSm) and in case of the existence of such interconnection, the notifying telephone (HSA1, . . . HSAn, HSS1, . . . HSSm) is interconnected in parallel to this interconnection, and if said notifying telephone (HSA1, . . . HSAn, HSS1, . . . HSSm) is not a telephone for digital communication, the other telephone is a telephone for digital communication.

Abstract: A method of performing a handover of a real time communication session, as well as a call signaling server for performing the handover of the real time communication session. The real time communication session is established between a first terminal of a subscriber and a terminal of a communication partner of the subscriber through a packet network. The handover is performed from the first terminal of the subscriber to a second terminal of the subscriber, whereby the first terminal of the subscriber is associated with a first access network of the packet network and the second terminal of the subscriber is associated with a second access network of the packet network. A call signaling server generates, in response to a trigger, control messages regarding the processing of the handover. The control messages are received and processed at a network node. A communication session with the second terminal of the subscriber is established.

Abstract: The invention concerns a method of providing a Push-to-Talk (=PTT) service within one or more telecommunication networks (1, 2, 3, 4) by means of a gateway-server (5) which sets up a virtual connection per PTT connection. The virtual connection provides information about the participating terminals (10, 20, 30, 40) of the PTT connection, the service type to reach each terminal (10, 20, 30, 40), and the connection status of each terminal (10, 20, 30, 40). Thus, the gateway-server (5) is capable of providing the PTT service within and/or across different telecommunication networks comprising radio access telecommunication networks (1), fixed wire-line telecommunication networks (2), circuit-switched telecommunication networks (3), and packet-switched telecommunication networks (4).

Abstract: The invention concerns a method for providing features to the user of a telephone (HSA1, . . . HSAn, HSS1, . . . HSSm) that is connected to a central unit (CU) whereby, if said telephone (HSA1, . . . HSAn, HSS1, . . . HSSm) is currently not interconnected via the central unit (CU), said telephone (HSA1, . . . HSAn, HSS1, . . . HSSm) notifies the central unit (CU) at least about certain kinds of user activities, in case of such notification the central unit (CU) checks whether it is currently interconnected to another telephone assigned to the same subscriber as said notifying telephone (HSA1, . . . HSAn, HSS1, . . . HSSm) and in case of the existence of such interconnection, the notifying telephone (HSA1, . . . HSAn, HSS1, . . . HSSm) is interconnected in parallel to this interconnection, and if said notifying telephone (HSA1, . . . HSAn, HSS1, . . . HSSm) is not a telephone for digital communication, the other telephone is a telephone for digital communication.

Abstract: The invention relates to a method for exchanging messages between an end subscriber and a text message server in a telecommunication network via even a conventional telephone device, which is connected to the text message server via a gateway with browser, which has means for voice recognition and for converting text into speech, and a service computer, wherein according to the end subscriber's instructions given by speech and/or via the keypad of the telephone device the gateway with browser contacts the service computer and from there downloads an electronic document, the gateway with browser converts indications, instructions and/or text messages from text into speech by means of the electronic document and outputs them on the telephone device and the gateway with browser receives instructions and/or messages which the end subscriber has input by speech and/or via the keypad of the telephone device, voice messages being converted into text messages in the gateway with browser, and also a telecommunication

Abstract: The present invention concerns a server and a method for transferring a message originating in a telecommunication network to an addressed subscriber. A telecommunication terminal sends a message to a server. The server inserts an address allocated to a TV set of the address subscriber to the message or encrypts the message by means of an encryption key allocated to a TV set of the address subscriber. In the following, a headend node of a TV broadcast network inserts the message into a TV signal and broadcasts the TV signal via a TV broadcast channel. A receiver unit assigned to the TV set of the addressed subscriber filters out the message and outputs the message on the TV set.