I have spent several hours attempting to make the EC-500 function work. I have gone through the recommended setup. I have created the FACs as directed. Set the station mapping up from host phone to cell phone. Called the cell phone to ensure service is active. Traced the ARS of the cell phone number. And generaly followed all known troubleshooting tips in the manual from Avaya. Still does not work. Anybody out there willing to educate me?