Everything about yeastar dubai, gsm gateway, analog voip gateway, pbx, module
TG400 is actually a compact 4 channels VoIP GSM gateway that connects GSM network with VoIP. it's the ideal creation for tiny and medium-sizedcorporations with large burdens of phone calls to mobile networks. the expense-conserving solution can make connection more cost-effective and effective. In general, a VoIP GSM/3G/4G Gateway may help you sav