The Yeastar Neogate TG200 – 2 Port GSM VoIP Gateway  is a GSM gateway for connecting GSM networks to VoIP networks for two-way communication. The TG200 is ideal for connecting IP Phones, soft switches, and IP-PBX’s to GSM network, and is the best fallback solution for landline outages. The TG200 Gateway from Yeastar can be a cost-saving addition for a backup option should landlines go out, and is great for phone calls between mobiles or to PTSN. Best of all, it’s easy to install with a web based GUI and simple to integrate.