G400 Series
Supports up to 4 GSM channels; supplied with fully GPL drivers for linux 2.4.X and 2.6.X kernels; can be connected to any other OpenVox card to build a real TDM switching PBX;
Products
Every OpenVox product line, from PBX systems to gateways and accessories.
View all 184 productsIPPBX and phones
Cards and accessories
Connect my sites
Modernize what I have

GSM/LTE/WCDMA Wireless Gateways
Provides up to 5 plug-in GSM gateway modules; ranges from 4 to 20 GSM channels.
OpenVox VoxStack Series GSM Gateway is the first Asterisk-based open-source VoIP GSM gateway solution for SMEs and SOHOs. With a user-friendly graphical interface and unique modular design, users can easily configure their customized gateway. Secondary development can also be performed via AMI.
There are three GSM gateway models in the VoxStack Series: the VS-GW1202 Series, the VS-GW1600 GSM Series, and the VS-GW2120 Series. The modular GSM gateways offer 4 to 20 GSM channels and are developed to interconnect a wide selection of codecs, including G.711A, G.711U, G.729, G.722, G.723, G.726 & GSM, with GSM cellular networks to quickly reduce telecommunication expenses and maximize savings. Thanks to the unique VoxStack Gateway design, hot-swapping of SIM cards and GSM gateway modules is supported. Users can simply add or remove modules for expansion or hardware replacement. Each GSM gateway module runs an independent Asterisk system.
The VoxStack Gateway is equipped with a LAN switch card that enables stacking during hardware upgrades. It supports sending and receiving SMS, bulk sending, and SMS-to-email conversion. GSM gateways use the standard SIP protocol and are compatible with IMS/NGN platforms, IPPBX systems, and SIP servers, supporting most VoIP operating platforms such as Asterisk, Elastix, 3CX, FreeSWITCH, Broadsoft, etc.
Technical specifications:
4/8/12/16/20 GSM channels
1 SIM card per GSM channel
2 10/100M LAN interfaces
Storage temperature range: -20~70℃
Operating temperature range: 0~40℃
Operating humidity range: 10%~90% non-condensing
Power supply: 1U ATX power souce,100-240V/1-2A
Maximum power consumption: 46W
Dimensions: 44cm × 4.5cm × 30cm
Weight: VS-GW1600-20G:4301g VS-GWM400G:214g
Software & Platform:
Linux
| Specification | Value |
|---|---|
| Software & Platform | |
| Product model | Specifications |
| VS-GW1600-4G | 4-channel GSM VoIP Gateway |
| VS-GW1600-8G | 8-channel GSM VoIP Gateway |
| VS-GW1600-12G | 12-channel GSM VoIP Gateway |
| VS-GW1600-16G | 16-channel GSM VoIP Gateway |
| VS-GW1600-20G | 20-channel GSM VoIP Gateway |
Request a quote: our team will confirm availability, compatibility and a deployment plan.