A communications system allowing the transmission of signals between pieces of terminal equipment connected to pieces of intermediate equipment, connected to a communications network using the Ethernet protocol, said pieces of terminal equipment not being master-controlled by a distributed clock, said pieces of intermediate equipment each including at least one Ethernet access physical interface, at least one interface with a piece of terminal equipment and means for processing the transmitted signals, the communications system including at least one reference clock generator, characterized in that it comprises the pieces of intermediate equipment, these latter implementing a synchronous gate function, and in that the system is configured so that: - a piece of reference time information is periodically transmitted by the reference clock generator and distributed as data transport packets to the pieces of intermediate equipment via the Ethernet access physical interface, - each piece of intermediate equipment includes a local clock generator said piece of reference time information being received and processed by each piece of intermediate equipment, so as to subordinate the local clock generator of each piece of intermediate equipment to the reference clock, so as to achieve synchronizing of the pieces of intermediate equipment, the means for processing the signals of a first piece of the pieces of intermediate equipment comprise means for digitizing signals provided by a piece of terminal equipment connected to said first piece of the pieces of intermediate equipment in the form of user data transport packets, said processing means being clocked by the local clock generator of the first piece of the pieces of intermediate equipment, - said user data transport packets being transmitted as digital user data flows via the Ethernet network to a second piece of the pieces of intermediate equipment, - signals being restituted to a piece of terminal equipment of said second piece of the pieces of intermediate equipment, said signals being regenerated from the digital user data flows with the same frequency and amplitude characteristics by the digitizing means of the second piece of the pieces of intermediate equipment clocked by the local clock generator of said second piece of the pieces of intermediate equipment, so as to obtain a synchronous processing of the transmitted signals. - a piece of reference time information is periodically transmitted by the reference clock generator and distributed as data transport packets to the pieces of intermediate equipment via the Ethernet access physical interface, - each piece of intermediate equipment includes a local clock generator said piece of reference time information being received and processed by each piece of intermediate equipment, so as to subordinate the local clock generator of each piece of intermediate equipment to the reference clock, so as to achieve synchronizing of the pieces of intermediate equipment, the means for processing the signals of a first piece of the pieces of intermediate equipment comprise means for digitizing signals provided by a piece of terminal equipment connected to said first piece of the pieces of intermediate equipment in the form of user data transport packets, said processing means being clocked by the local clock generator of the first piece of the pieces of intermediate equipment, - said user data transport packets being transmitted as digital user data flows via the Ethernet network to a second piece of the pieces of intermediate equipment, - signals being restituted to a piece of terminal equipment of said second piece of the pieces of intermediate equipment, said signals being regenerated from the digital user data flows with the same frequency and amplitude characteristics by the digitizing means of the second piece of the pieces of intermediate equipment clocked by the local clock generator of said second piece of the pieces of intermediate equipment, so as to obtain a synchronous processing of the transmitted signals.