Tesco Cordless Internet Phone Vs Linux

I'm trying to get Tesco's Cordless VOIP Phone working with Linux. It almost works but it looks like one of the audio interfaces isn't working (interface 0). Looking around the web, it looks like interface 0 on several USB devices doesn't work, so maybe getting ALSA to ignore it will get it working (except, I'm not sure how to do that yet). I've sent an email to alsa users mailing list, hopefully someone will be able to shed some light on what I need to do.