Thanks for the suggestion about checking the wiring of my telephone socket! I was able to get my X100P to pass through the signal and get rid of the Red Alarm in zttool, hallelujah!!! My understanding of the problem was that the X100P wants the POTS signal on pins 2 & 5 whereas the Irish sockets are wired up for pins 3 & 4. I do have another problem with the socket that was installed by the telco (Eircom). The only way I can get the X100P to accept the signal is by connecting the POTS pair directly to the RJ11 coming from the card. If I try and go through the socket no signal gets through. I checked the connections through the socket and I have the pins wired correctly so I can only assume that the in built resistance of the socket is not letting enough current through to the card??? The socket is manufactured in the UK and has ISDN writen on it as well as having an RJ45 connector. I would love to know what is going on here... Thanks, Aaron __________________________________ Do you Yahoo!? SBC Yahoo! - Internet access at a great low price. http://promo.yahoo.com/sbc/