Mixed avionic communication system of types ARINC 664 P7 and ethernet with predetermined routing

An avionic communication system comprising:

• a plurality of switches connected to each other in order to form a computer network;
• a plurality of equipment units, each equipment unit being a transmitter or receiver of digital data and being connected to at least one switch;
• the system being characterised in that:
• each transmitting equipment unit is capable of generating digital data that are present in the form of a plurality of frames, each frame having an identifier and being of a first type or of a second type, the frames of the first type being in compliance with a first protocol and the frames of the second type being in compliance with a second protocol which is different from the first protocol, the frames of a same type having the same identifier forming a data flow of this type;
• each switch and each receiving equipment unit are configured so as to determine the type of each frame received and, based on the determined type, to process this frame in accordance with the first protocol or in accordance with the second protocol, each frame of the first type being processed on a prioritised basis in relation to each frame of the second type;
• and
• the first protocol is of the type ARINC 664 P7 and the second protocol is of the type Ethernet with predetermined routing;
• wherein each transmitting equipment unit is configured so as to transmit the frames of the second type included in the same data flow according to a bandwidth defined for this data flow,
• wherein each transmitting equipment unit is capable of defining a total bandwidth for all second type data flows originating from this transmitting equipment unit independently of the other transmitting equipment units, and from the total bandwidth, the bandwidth for each data flow originating from this transmitting equipment unit, and
• wherein the bandwidth for each second type data flow originating from the respective transmitting equipment unit is defined in a weighted manner as a function of the nature of this data flow.