DEVELOPMENT OF SURVEILLANCE
TECHNOLOGY AND RISK OF ABUSE
OF ECONOMIC INFORMATION
Vol 2/5
The state of the art in communications
Intelligence (COMINT) of automated processing for intelligence purposes
of intercepted broadband multi-language leased or common carrier
systems, and its applicability to COMINT targetting and selection,
including speech recognition

http://www.duncancampbell.org/menu/surveillance/echelon/IC2000_Report%20.pdf