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Cards that allows the connectivity between IPPBX and GSM or WCDMA mobile network
4 channels GSM card The OpenVox G400P/E provides scalable connectivity to GSM networks for your linux machine. It comes with fully GPLed drivers for the linux 2.4.X and 2.6.X kernels. The OpenVox GSM card can be connected to any other OpenVox card to build a real TDM switched PBX.