Abstract: In order to know, for the purpose of a response, the route taken by a message packet flowing in a transmission system having several different transmission channels, several fields (RA0 to RA2) are reserved in this message in which fields are entered the identities of the interfaces passed through by the message passing from one channel to another.

Abstract: In order to register items of equipment brought into service in an apartment equipped with an HF transmission channel home-automation network, it is first verified that no other item of equipment from a foreign network is requesting registration (18), then a registration request standby signal (20) is transmitted and, following reception of the identity request signal (26) before the completion of a specified temporization (27), the requested identity is communicated to the item of equipment, else the procedure is aborted and subsequently recommenced.

Abstract: A method of establishing a digital time-division duplex radio communication link between one of a plurality of portable units and a base unit in a cordless telephone system, transmissions from the base unit are allowed only on a ping-pong basis with transmission bursts from all the active transmitters in the base unit being synchronized with one another. This prevents blocking of receiver sections due to co-sited transmitters transmitting at the same time on a different channel. The difficulty of synchronizing the transmission bursts of the active portable units with their respective transceivers within the base unit is overcome by allowing the portable unit to make an initial continuous call comprising multiple identical sequences of data containing units small enough to be completely received within the limited reception windows of the base unit.