Mission Critical PTT In Direct Mode

Press Release: The SDIS 95 achieves voice conversation up to 1km deep underground with a VoIP solution in direct mode developed by Green Communications. The experimentation is carried out with the support of Innov-Up Tech & Secours programme. Find more details on the press release: https://www.green-communications.fr/wp-content/uploads/2023/01/CP_Green-SDIS95_MCPTT-1.pdf