The Implementation of the Communications Assistance for Law Enforcement Act

Audit Report 06-13
March 2006
Office of the Inspector General

Cellular Port Capacity – Limited capacity of cellular systems to accommodate a large number of intercepts simultaneously. Audio Dial Digit Capture – Cellular provider unable to capture dialed digits contemporaneous with audio. Long Distance – Cellular provider could not intercept long distance calls (or provide call setup information) to or from a targeted phone. Speed Dialing/Voice Dialing/Call Waiting – Provider unable to deliver the actual number dialed when these features are used. Call Forwarding – Provider unable to deliver the actual number dialed when these features are used. Direct Inward Dial – Provider unable to isolate target’s communications or provide call set-up information to the exclusion of all other customers. Voice Mail – Provider unable to provide access to the subject’s audio when forwarded to voice mail or retrieve messages. Digital Centrex – Provider unable to isolate all communications associated with the target to the exclusion of all others. Other – Including other calling features such as call back, provider unable to: provide trap and trace information; isolate the digital transmissions associated with a target to the exclusion of all other communications; comprehensively intercept communications, and provide call set-up information.