I have difficulty to configure Linksys SPA3102, 1x FXO and 1x FXS. The problem was FXO port on the SPA3102 cannot receive call and also from the softphone (X-Lite) and also from the FXS Port in the SPA3102 cannot dial out. In the 3CX server status informs as Call (3) 404 Not Found and then follow by Call (3) Rejected. What is 404 Not Found Mean? In the PC that 3CX Installed the firewall was inactive. All the SPA3102 configuration was use the guidance from 3CX Website. If I try to use FXO port as extension, I can dial out use the extension. But I want to use the SPA3102 as PSTN Line. Please help ... :-( Thank you.