The disclosure relates to a process and apparatus for cooperating transmission of an alarm. A process is described for transmitting at least one alarm signal from an alarmed apparatus to a PSAP (Public Safety Answering Point, 127), through a system composed of a plurality of cooperating apparatuses (101, 104, 108, 106, 116, 119, 111, 124, 122) comprising at least one such alarmed apparatus (101) and at least one responding apparatus, said apparatuses being equipped at least with memory means, processing means and a first radio system for direct reception/transmission, from apparatus to apparatus, of signals and data, and said plurality of cooperating apparatus comprising at least one apparatus (124, 122) equipped with means adapted to transmit said alarm signal to said PSAP (127). An apparatus is also described which is adapted to implement the above process.