Hello, i have the ip phone Linksys SPA941 connected to a trixbox system ( 2.2 version ) . I also have 2 Linksys PAP2 for my old phones. I make outgoing calls through an isdn line. When i make calls from a telephone connected to a PAP2 i hear the ringing tones of the telephone network, not the trixbox or the PAP2 tones, which is correct. When i make calls from the SPA941 i don't hear the network tones but the trixbox tones. This causes inconvinience to me because i make a lot of calls to mobile phones and i can't hear the messages of the mobile networks (for example if the phone is closed, out of coverage etc) but just the trixbox ringing tone. The SPA941 was working as i wanted and the issue with the trixbox ringing tone happened suddenly. I have tried everything: reseting the SPA941 to the factory default settings, downgrading the firmware, rebooting and restarting it from its menu. The last i tried was to make a clean trixbox installation without upgrading freepbx. The result was the same, hearing the trixbox ringing tone when calling from the SPA941. I also tried the Asterisk Dial command options and Asterisk Outbound Dial command options but nothing happens. I remind you that the 2 PAP2 work correctly. Today i installed my isdn card (it is a card with HFC chipset) with the command install-ZAPHFC and when the install-ZAPHFC script asked me what asterisk version i want to install i chose 1.4.9 version and 0.4.0 version of bristuff but i have the same problem. What can i do to resolve that issue?