Bell Atlantic Network Services, Inc.

Verizon Services Corporation

Jay C Lodsun

Robert D Farris

Dale Lee Bartholomew

Barry Paul Pershan

Michael G Pilkerton

Thomas A Nolting

Raymond F Albers

Charles H Eppert, Iii

Daniel C Michaelis

Walter Pomykacz

Richard G Backus

Christine W Huff

Harrison K Wallace

Dennis A Minarczik

Christine Huff

Gerard J Sasse

Daisy C Copp

A lawfully authorized electronic surveillance operation requires reporting of detailed call data for a variety of calls associated with the subject of the surveillance. For at least some specified calls to or from the subject, the invention provides profile data in a switching office serving the subject that causes the office to generate accounting messages for each call, essentially in the same manner as for billing, regardless of whether the calls are billable. Accounting records formed from the messages are uploaded to a server system, for processing and formatting as necessary for delivery to the law enforcement agency. The surveillance could entirely rely on these accounting records for the data reporting. In the preferred embodiments, however, the surveillance also involves monitoring of common channel signaling messages to accumulate call detail records for surveillance purposes, with respect to many calls associated with the subject. The preferred embodiment utilizes a special CLASS code set against the subject's profile in the serving end office. The CLASS code in the profile causes that office to produce the accounting messages for each of the subject's calls processed through the office that does not involve a monitored form of interoffice signaling.

Call detail reporting for lawful surveillance

A wireless transceiver connects to a telephone line network terminal, in place of a disabled subscriber drop cable. A second wireless transceiver connects to customer premises wiring, typically at the network interface device and in place of the drop cable. The wireless transceivers preferably provide a cordless telephone type link. The second transceiver presents a standard telephone line appearance to the customer premises telephone wiring. Standard telephone station equipment, connected to the customer premises wiring in the normal manner, can make and receive telephone calls, as if still connected to a wire-line type telephone loop circuit.

Wireless drop

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Vienna, VA, United States of America

Jay C Lodsun