https://www.gsmgateway.in/openvox/SWG2016-32-4S-G-L-Series-Wireless-Gateway.html
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OpenVox SWG-2032 series wireless gateways with SWG-2032 G/C/L.SWG-2032 series wireless gateways hand different codecs, including G.711U, G.711A, GSM, G.722,...
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https://www.gsmgateway.in/openvox/SWG-Series-Gateways.html
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