Yeastar TG400G (2G) GSM Gateway – NTRA Certified & Now Available at ProVAD ProVAD, the official Yeastar distributor in Egypt , proudly introduces the NTRA-certified Yeastar TG400 GSM Gateway —now available for immediate deployment across Egypt. Engineered for 2G VoIP-to-GSM ... 2GGateway GSMVoIP NTRAApproved ProVAD TG400 Yeastar gateways Jul 24, 2025 0 83