Abstract: A localized wireless gateway system provides wireless telephone communication and provides access to a public packet data network, such as the Internet, for at least voice telephone type communications. The wireless gateway system includes a number of base stations, essentially built around computers with digital transceiver circuitry, which provide an air interface to a number of digital terminal devices. The terminal devices communicate audio information in a standard digitized and compressed data format. The base stations provide two-way communications of the audio data over a public packet switched data network, either directly or via a local area network and a server coupled to the public data network. A server and local area network provide local voice and data communications as well as voice and data communication access to the public packet data network.

Abstract: In a public switched telephone network, interoffice call attempts to or from a line under surveillance generate a variety of query, response and release messages between the offices, as part of the normal procedures for setting up and tearing down the calls to and from the line. To insure that all calls under surveillance generate signaling messages, terminating, dialing and release triggers are set with respect to the target's line. As a result, the end office serving that line sends queries to a database on the signing network, receives response messages, and sends release report messages. A site processor compiles data from the signaling messages and forms a call detail record (CDR) for each call attempt relating to the target under surveillance. A central file server further processes the CDRs and supplies composite data regarding the target's calls through a data network connection to one or more law enforcement agencies.