Monitoring system for a remote telephone station
First Claim
1. A method for monitoring a telephone call, comprising the steps of:
- recognizing the telephone call as an identified telephone call from a station under surveillance;
setting up the identified telephone call to a second station;
after the identified telephone call is set up and connected between the station under surveillance and the second station, setting up a secure passive voice path to a monitoring station; and
connecting a secure active monitoring voice path between the second station and the monitoring station.
3 Assignments
0 Petitions
Accused Products
Abstract
An advanced call monitoring feature which adds an active voice path only between the called party, e.g. a victim, and the monitoring party so remote location of the called party and the monitoring personnel. The active voice path allows monitoring personnel to give instructions or encouragement the called party during lulls in the conversation with the calling party, thus the law enforcement personnel can be actively engaged in the call between the calling party and the called party, even though the monitoring station may be many miles away. This new feature functionality enhances the capabilities and utility of CALEA monitoring.
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Citations
16 Claims
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1. A method for monitoring a telephone call, comprising the steps of:
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recognizing the telephone call as an identified telephone call from a station under surveillance;
setting up the identified telephone call to a second station;
after the identified telephone call is set up and connected between the station under surveillance and the second station, setting up a secure passive voice path to a monitoring station; and
connecting a secure active monitoring voice path between the second station and the monitoring station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system comprising:
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a first station calling a second station causing a ringing signal to be sent to the second station;
a bridge connects the second station to third station causing a second ringing signal at the third station;
the bridge isolates the ringing signal of the second station from the ringing signal of the third station such that answering the call at the third station before the call is answered at the second station will not stop the ringing of the second station;
the bridge connects the third station to the second station after the third station goes off-hook to answer the call for passive monitoring of a voice path between the first station and the second station; and
after the second station goes off-hook to answer the call, the bridge connects an active voice path between the third station and the second station such that signals from the handset of the third station are bridged to the second station without the signals being connected to the first station. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification