Interphone method for a dwelling equipped: - with at least one electric intercom including a human-machine interface enabling a visitor to select any of the residents of the dwelling and to communicate with the selected resident through videoconferencing, and - with a transceiver linked to a public telecommunications network, this transceiver being able to call a receiver of the selected resident and to establish videoconferencing by way of the public network, this method including, in response to the selection, by a visitor, of any of the residents of the dwelling using the human-machine interface: - calling the receiver of the selected resident by way of the public network, characterized in that: • the method comprises the following step: while the receiver is not engaging the line, the human-machine interface generates sounds, and • the method comprises the following steps in response to the line being engaged by the receiver of the resident: - the human-machine interface generates the same sounds as those usually generated while the receiver is not engaging the line, and prevents the human-machine interface from presenting any information enabling the visitor to know that the selected resident has engaged the line, and, at the same time, - said at least one electric intercom and the transceiver transmit, by way of the public network, images of the visitor who selected this resident and the receiver of the resident displays these images, then • the method comprises the following steps in response to an order to activate videoconferencing, transmitted by the receiver of the resident: - the human-machine interface ceases to prevent the human-machine interface from presenting any information enabling the visitor to know that the selected resident has engaged the line, and - the transceiver establishes videoconferencing between the visitor and the resident by way of the public network. - with at least one electric intercom including a human-machine interface enabling a visitor to select any of the residents of the dwelling and to communicate with the selected resident through videoconferencing, and - with a transceiver linked to a public telecommunications network, this transceiver being able to call a receiver of the selected resident and to establish videoconferencing by way of the public network, - calling the receiver of the selected resident by way of the public network, • the method comprises the following step: while the receiver is not engaging the line, the human-machine interface generates sounds, and • the method comprises the following steps in response to the line being engaged by the receiver of the resident: - the human-machine interface generates the same sounds as those usually generated while the receiver is not engaging the line, and prevents the human-machine interface from presenting any information enabling the visitor to know that the selected resident has engaged the line, and, at the same time, - said at least one electric intercom and the transceiver transmit, by way of the public network, images of the visitor who selected this resident and the receiver of the resident displays these images, then - the human-machine interface generates the same sounds as those usually generated while the receiver is not engaging the line, and prevents the human-machine interface from presenting any information enabling the visitor to know that the selected resident has engaged the line, and, at the same time, - said at least one electric intercom and the transceiver transmit, by way of the public network, images of the visitor who selected this resident and the receiver of the resident displays these images, then • the method comprises the following steps in response to an order to activate videoconferencing, transmitted by the receiver of the resident: - the human-machine interface ceases to prevent the human-machine interface from presenting any information enabling the visitor to know that the selected resident has engaged the line, and - the transceiver establishes videoconferencing between the visitor and the resident by way of the public network. - the human-machine interface ceases to prevent the human-machine interface from presenting any information enabling the visitor to know that the selected resident has engaged the line, and - the transceiver establishes videoconferencing between the visitor and the resident by way of the public network.