Method for communicating in an IP network, comprising the following steps: a) a first communicating device initializes a communication with a second communicating device by signaling, to said second communicating device, that said first communicating device is compatible with multipath communications based on the UDP, User Datagram Protocol, transport protocol, and b) if the second communicating device is itself also compatible with multipath UDP communications: - the first communicating device sends data to the second device in accordance with the UDP transport protocol, by including, in the messages containing these data regardless of the path that is used, one and the same identifier, called context identifier (Context_ID), allowing the second communicating device to correlate all of the UDP datagrams associated with one and the same multipath UDP communication, and/or - the second communicating device sends data to the first device in accordance with the UDP transport protocol, by including, in the messages containing these data regardless of the path that is used, one and the same identifier, called context identifier (Context_ID), allowing the first communicating device to correlate all of the UDP datagrams associated with one and the same multipath UDP communication. a) a first communicating device initializes a communication with a second communicating device by signaling, to said second communicating device, that said first communicating device is compatible with multipath communications based on the UDP, User Datagram Protocol, transport protocol, and b) if the second communicating device is itself also compatible with multipath UDP communications: - the first communicating device sends data to the second device in accordance with the UDP transport protocol, by including, in the messages containing these data regardless of the path that is used, one and the same identifier, called context identifier (Context_ID), allowing the second communicating device to correlate all of the UDP datagrams associated with one and the same multipath UDP communication, and/or - the second communicating device sends data to the first device in accordance with the UDP transport protocol, by including, in the messages containing these data regardless of the path that is used, one and the same identifier, called context identifier (Context_ID), allowing the first communicating device to correlate all of the UDP datagrams associated with one and the same multipath UDP communication. - the first communicating device sends data to the second device in accordance with the UDP transport protocol, by including, in the messages containing these data regardless of the path that is used, one and the same identifier, called context identifier (Context_ID), allowing the second communicating device to correlate all of the UDP datagrams associated with one and the same multipath UDP communication, and/or - the second communicating device sends data to the first device in accordance with the UDP transport protocol, by including, in the messages containing these data regardless of the path that is used, one and the same identifier, called context identifier (Context_ID), allowing the first communicating device to correlate all of the UDP datagrams associated with one and the same multipath UDP communication.