OpenVox VS-GW1600-4G VoxStack 4 Port GSM Gateway
More on Amazon.com : http://www.amazon.com/gp/product/B00I86GJB2?tag=thefatkidin06-20
OpenVox VS-GW1600-4G VoxStack 4 Port GSM Gateway
Independent System for Each Module
Affordable Price with Superior Performance
Hot-swap Design for both Sim cards and Modules
4 GSM Channels
Compatible with Asterisk Elastix 3CX FreeSWITCH Sip Server and VOS VoIP operating platform
OpenVox VS-GW1600-4G VoxStack 4 Port GSM Gateway
Independent System for Each Module
Affordable Price with Superior Performance
Hot-swap Design for both Sim cards and Modules
4 GSM Channels
Compatible with Asterisk Elastix 3CX FreeSWITCH Sip Server and VOS VoIP operating platform