There are three GSM Gateway models with VoxStack series GSM Gateway, the GWG1002, VS-GW1202-4/8G and VS-GW1600. There are 2 GSM channels in WGW1002. The Modular Design GSM Gateways are ranging from 4 up to 20 GSM channels, developed for interconnecting a wide selection of codecs, including G.711A, G.711U, G.729, G.722, G.726 & GSM, to the GSM cellular networks to quickly reduce telecommunication expenses and maximize cost-savings. With the unique design of the VoxStack Gateway, it can support hot-swap for both SIM cards and GSM gateway modules. Users can simply add or remove the modules for hardware expansion or exchange. Each GSM gateway module runs an independent asterisk system inside. The VoxStack gateway designs with two LAN Switch boards that provide stackability on the hardware upgrade. The GSM Gateways will be 100% compatible with asterisk, Elastix, trixbox, 3CX , FreeSWITCH SIP server and VOS VoIP operating platform.
VS-GWM400G module allows OpenVox wireless VS-GW1200/1600 series gateways to support GSM connection to the VoIP devices. Each module offers four GSM channels.
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