CALEA application server complex

• US 20050094773A1
• Filed: 10/31/2003
• Published: 05/05/2005
• Est. Priority Date: 10/31/2003
• Status: Abandoned Application

• Current Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Original Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Inventors: Peterson, James D.
• Application Number:
  US10/698,802
• Publication Number:
  US 20050094773A1
• Time in Patent Office: Days
• US Class Current: 379/35
• CPC Class Codes: H04M 3/2281 Call monitoring, e.g. for law enforcement purposes; Call tracing; Detection or prevention of malicious calls
• CPC Class Codes: H04M 3/42221 Conversation recording systems at the subscriber's set H04M1/656
• CPC Class Codes: H04M 7/1205 where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks

Abstract

A method of conducting covert surveillance of a subject is provided for within a telecommunications network. The surveillance includes surveillance of a monitored call connected over the network, the monitored call being between the subject and an associate and including circuit-switched or packet-switched call content, i.e., bearer traffic exchanged between the subject and the associate. The method includes: clandestinely receiving the circuit-switched or packet-switched call content; converting the received circuit-switched call content into a packet-switched format; and, delivering the call content in the packet-switched format to a designated law enforcement agency over a packet-switched data network.

Claims

1. Within a telecommunications network, a method of conducting covert surveillance of a subject, said surveillance including surveillance of a monitored call connected over the network, said call being between the subject and an associate and including call progress data as well as circuit-switched or packet-switched call content comprising bearer traffic exchanged between the subject and the associate, said method comprising:

(a) clandestinely receiving the circuit-switched call content;

(b) converting the received circuit-switched call content into a packet-switched format; and

,

(c) delivering the call content in the packet-switched format to a designated law enforcement agency over a packet-switched data network.

2. The method of claim 1, wherein step (c) further comprises:

transmitting the received call content to the law enforcement agency in substantially real-time while the monitored call is in progress.

3. The method of claim 1, further comprising:

storing the received call content prior to step (c).

4. The method of claim 3, wherein step (c) further comprises:

providing the law enforcement agency with access to the stored call content; and

,

transmitting the stored call content and call progress data to the law enforcement agency upon receipt of a request therefor from the law enforcement agency.

5. The method of claim 1, further comprising:

storing the received call content; and

,

providing the law enforcement agency with access to the stored call content; and

,

step (c) further comprises both;

(i) transmitting the received call content to the law enforcement agency in substantially real-time while the monitored call is in progress; and

, (ii) transmitting the stored call content to the law enforcement agency upon receipt of a request therefor from the law enforcement agency.

6. The method of claim 1, further comprising:

applying data compression to the received call content in the packet-switched format.

7. The method of claim 1, further comprising:

obtaining the call progress data; and

,

storing the call progress data.

8. Within a telecommunications network, a system for conducting covert surveillance of a subject, said surveillance including surveillance of a monitored call connected over the network, said monitored call being between the subject and an associate and including circuit-switched or packet-switched call content comprising bearer traffic exchanged between the subject and the associate, said system comprising:

monitoring means for clandestinely receiving the circuit-switched or packet-switched call content;

translation means for converting the received circuit-switched call content into a packet-switched format; and

,

transmission means for delivering the call content in the packet-switched format to a designated law enforcement agency.

9. The system of claim 8, wherein the transmission means transmits the received call content to the law enforcement agency in substantially real-time while the monitored call is in progress.

10. The system of claim 9, further comprising:

storage means for storing the received call content prior to delivery by the transmission means.

11. The system of claim 10, further comprising:

interface means for providing the law enforcement agency with access to the storage means to selectively obtain the stored call content therefrom; and

,

wherein the transmission means transmits the stored call content to the law enforcement agency upon receipt of a request therefor from the law enforcement agency.

12. The system of claim 8, further comprising:

storage means for storing the received call content; and

,

interface means for providing the law enforcement agency with access to the storage means to selectively obtain the stored call content therefrom; and

,

wherein the transmission means both;

(i) transmits the received call content to the law enforcement agency in substantially real-time while the monitored call is in progress; and

, (ii) transmits the stored call content to the law enforcement agency upon receipt of a request therefor from the law enforcement agency.

13. The system of claim 8, wherein the transmission means comprises a packet-switched data network.

14. The system of claim 8, wherein the translation means comprises a packet-switched gateway.

15. The system of claim 8, wherein the monitoring means comprises an application server complex implemented as an adjunct to a telecommunications switch providing service to the subscriber.