Electronic Surveillance in a Digital Age

Topics: Telecommunication, Law enforcement agency, Telephone Pages: 101 (29769 words) Published: September 14, 2010
Electronic Surveillance in a Digital Age July 1995
OTA-BP-ITC-149 GPO stock #052-003-01418-1

Recommended Citation: U.S. Congress, Office of Technology Assessment, Electronic Surveillance in a Digital Age, OTA-BP-ITC-149 (Washington, DC: U.S. Government Printing Office, July 1995).


awlessness and terrorism present new challenges to our society as the 21st Century approaches. Electronic surveillance is an invaluable tool in America’s arsenal to fight crime in this era of high-speed, global communications. Digital communications technology has recently outpaced the ability of the law enforcement agencies to implement court authorized wiretaps easily and effectively. To address this problem, the 103d Congress enacted the Communications Assistance for Law Enforcement Act (P.L. 103-414). This Act invokes the assistance of the telecommunications industry to provide technological solutions for accessing call information and call content for law enforcement agencies when legally authorized to do so. The law enforcement community and the telecommunications industry are currently working collaboratively on solutions to implement the requirement of the Act. On September 27, 1994, Congressman Michael G. Oxley, a member or OTA’s Technology Assessment Board, requested that OTA consider the technical aspects of implementing the law that will affect the ultimate cost to the government, the industry, and the rate payers. This background paper reviews the progress of the industry and the law enforcement agencies in implementing the Act since its approval in October 1994. OTA extends its thanks to the Alliance for Telecommunications Industry Solutions (ATIS) that sponsors the Electronic Communications Service Providers (ECSP) committee, which is the forum for the collaborative efforts of the industry and law enforcement in seeking solutions for complying with the requirements of the Act. Without the willful cooperation of the ECSP, OTA would likely not have been able to accurately compile the information contained in this background paper. Special acknowledgment is also given to the law enforcement community for its assistance that was extended through the Telecommunications Industry Liaison Unit (TILU) of the Federal Bureau of Investigation.



roject Staff
Peter D. Blair Assistant Director, OTA Industry, Commerce, and International Security Division Andrew W. Wyckoff Program Director Industry, Telecommunications, and Commerce Program JAMES W. CURLIN Project Director

Manager, Publishing Services

Office Administrator

Chip Moore Production Editor Dorinda Edmondson Electronic Publishing Specialist Susan Hoffmeyer Graphic Designer

Karry Fornshill Secretary Diane Jackson Administrative Secretary Karolyn St. Clair PC Specialist


1 Summary and Discussion 1
Congressional Request and Scope of the Study 6 The Communications Assistance for Law Enforcement Act (P.L. 103-414) 7 Principal Features of the Act 8 Law Enforcement’s Requirements for Electronic Surveillance 15 Findings and Observations 24

2 Technical Aspects of Electronic Surveillance 29
Technologies 33 Switch-Base Solutions 35 Wireless Technologies 41

APPENDICES A Section-by-Section Summary of the Communications Assistance for Law Enforcement Act Public Law 103-414 63 Electronic Surveillance Requirements Keyed to P.L. 103-414 67 Related OTA Reports for Further Reading 69


Glossary 71


Summary and Discussion
he law enforcement community considers electronic surveillance1 to be an invaluable tool for fighting crime. Officials cite many instances where criminal activities were either subverted, or if crimes were perpetrated, those responsible were apprehended as a result of court-approved electronic surveillance by law enforcement agencies. The use of court-authorized electronic surveillance became increasingly...
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