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The FXS-200 Dual-FXS module allows the OpenVox VS-GWM801 series Analog Gateway Module to terminate 2 analog telephones per module. Because of the modular design, users can activate additional ports at any time with more FXS-200, FXO-200 or FXOS-200 modules. These modules pass all the call features with a standard analog telephone line will help .
