VoIP: It's not so easy to listen in - News - ZDNet:
"Jeff Pulver, founder of Free World Dialup, said Friday that if law enforcement officials asked him to wiretap one of his subscribers' Internet phone calls he would need a 'few months science project' to see if it could be done.

Meanwhile, Niklas Zennstrom, founder of Skype, also a free Internet phone service, said that even if his company could tackle the arduous task of pulling a Skype call from the Internet, police would 'only hear gibberish' because the data bits are encrypted."


The two providers are prime examples of a problem the Federal Communications Commission now faces after voting Thursday to investigate whether Internet phone providers should rewire their networks to government specifications to provide police with guaranteed access for wiretaps.

While many voice over Internet Protocol (VoIP) providers are more than willing to hand over whatever information they can about subscribers, they can't reliably, if at all, get what police really want: the content of the calls they make. Difficulties lie in gathering the millions of bits of information that represent a voice call as well as the fact that there is no standardized way for distinguishing voice calls from the terabits of other data on the Internet.

The issue affects a broad range of VoIP providers, including FWD and Skype, and commercial services such as Vonage and 8x8 that offer calls to traditional phone lines. Many of these commercial services say a sizable percentage of their calls never touch the traditional phone network and, as a result, cannot be tapped.…

http://zdnet.com.com/2100-1103_2-5159159.html