900mhz digital phones - how much to trust ?

Whats the current thinking on the security level of 900Mhz digital spread sectrum cordless phones? Clearly it's not a basic scanner job but how much more equipment is needed to monitor one ? John Pettitt, jpp@software.net VP Engineering, CyberSource Corporation, 415 473 3065 Favorite quote: "Security is mostly a superstition. It does not exist in nature, nor do the children of man as a whole experience it. Avoiding danger is no safer in the long run than outright exposure. Life is either a daring adventure, or nothing." - Helen Keller