Simado GFXD1111S ( 1 GSM, 1 FXO Port, 1 FXS Port & 1 RS-232C Data Port) GSM to FXS and FXO Router Abbreviated Dialing Allowed and Denied Lists E-mail send-receive Fax Transmission through PC File transfer & Remote login GPRS Class 10 Internet browsing Least Cost Routing ( LCR) Polarity reversal and 16Khz metering for PCO application Quad-band operation SMS Application