Wiretapping VoIP

Bruce Schneier's 15 Apr 03 CryptoGram (required reading for me) alerted me to a story on wiretapping. This quote blew me away:

Unlike a traditional phone call, where a line is dedicated between two parties, VOIP slices each call into millions of tiny digital packets, each of which can take a discrete route over the Internet. That means surveillance equipment must either be installed permanently on a network or calls must be routed through FBI surveillance equipment before being delivered to the caller, which experts say can create a suspicious delay. "Our tactical people are trying to plug every hole. But it's like playing the field short one player," says Szwajkowski. "A call that is not [able to be intercepted] is a major public-safety and security dilemma."