Communication system for satellite space equipment items comprising a plurality of space equipment items (E1, E2, E3, E4, E5, E6) coupled to operational physical data buses for data communications between space equipment items during a satellite operating mode, each space equipment item comprising at least one smart coupler (CL, CLS) comprising wireless communication blocks, said at least one smart coupler (CL, CLS) comprising a processor, an internal memory, a transmission/reception circuit and at least one high frequency antenna, said internal memory of said smart coupler (CL, CLS) furthermore comprising programming means suitable for: • automatically saving parameters relating to the operation of the space equipment items with which they are associated, • storing of technical data relating to the space equipment items with which said smart couplers (CL, CLS) are associated, • storing self-test procedures relating to the space equipment items with which said smart couplers (CL, CLS) are associated and which can be executed remotely, the system being characterized in that: - the smart coupler associated with each equipment item communicates, according to the location of said equipment item in the satellite enclosure, either with internal and external wireless communication blocks for the equipment items which are in the immediate proximity of a wall of the satellite, or with internal wireless communication blocks for the equipment items which are at the core of the satellite; - the internal and external wireless communication blocks forming a wireless network distinct from the operational physical data buses, said wireless network being able to be activated or deactivated to operate communication functions between the outside and the inside of the satellite to provide ground and inflight diagnostics of the space equipment items or operate communication functions within the satellite to communicate in flight operational data between the plurality of the space equipment items. • automatically saving parameters relating to the operation of the space equipment items with which they are associated, • storing of technical data relating to the space equipment items with which said smart couplers (CL, CLS) are associated, • storing self-test procedures relating to the space equipment items with which said smart couplers (CL, CLS) are associated and which can be executed remotely, - the smart coupler associated with each equipment item communicates, according to the location of said equipment item in the satellite enclosure, either with internal and external wireless communication blocks for the equipment items which are in the immediate proximity of a wall of the satellite, or with internal wireless communication blocks for the equipment items which are at the core of the satellite; - the internal and external wireless communication blocks forming a wireless network distinct from the operational physical data buses, said wireless network being able to be activated or deactivated to operate communication functions between the outside and the inside of the satellite to provide ground and inflight diagnostics of the space equipment items or operate communication functions within the satellite to communicate in flight operational data between the plurality of the space equipment items.