METHOD AND APPARATUS FOR MONITORING TELEPHONE CALLS

摘要

A method and apparatus for monitoring voice and data telephone calls by a la w enforcement agency, wherein separate monitoring connections for each party to the call are established. Upon determining (10 8) that a particular call is to be monitored, the group switch attempts (112) to establish a plurality of separate connections between each multiple point (MUP) on the group switch that receives voice or data signals from one of the parties to the call and one or more monitori ng centers. If the connection associated with the primary party to be monitored fails (114), the group switch reroutes signals (124) received from the primary party to a successful connection of the plurality of attempted connections.