Aegis has also developed the advanced version GSM Voice Terminal, of this GSM FCT, which allows the user to avail this product with more powerful features. Aegis FCT XN520 is a GSM Fix Cellular Terminal which has provision to connect GSM Sim with two parallel FXS Ports. FXS Port can be interface with PBX, telephone instrument, dial pad and desktop softphone for making and receiving calls via GSM network during office hours from their desk. 1. Easy to install 2. Rugged Design 3. High gain antenna 4. Emergency number 5. Hot dialing 6. Welcome message 7. Unlimited conference 8. Speed dial