Lawful interception of personalized ring back tones

• US 8,270,573 B2
• Filed: 11/04/2005
• Issued: 09/18/2012
• Est. Priority Date: 12/16/2004
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Fiorillo, Lorenzo, De Luca, Enrico, Santoro, Pompeo, Landi, Linda, Di Serio, Luca
• Primary Examiner(s): TRAN, QUOC DUC
• Application Number:
  US11/721,584
• Publication Number:
  US 20080165940A1
• Time in Patent Office: 2,510 Days
• Field of Search: 379 3201- 3205, 379/35, 455/410
• US Class Current: 379/35
• CPC Class Codes: H04L 63/30 for supporting lawful interception, monitoring or retaining of communications or communication related information circuit switched telephony call monitoring H04M3/2281
• CPC Class Codes: H04M 2207/18 wireless networks
• 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 3/42017 Customized ring-back tones
• CPC Class Codes: H04W 12/80 Arrangements enabling lawful interception [LI]

Abstract

Systems and methods for legal interception of the transmission of personalized ring back tones as they are sent from a network such as a mobile telephone network associated with a subscriber to a caller in response to a call placed by the caller to the subscriber to allow monitoring of personalized ring back tones and/or their associated call content data. The personalized ring back tone is intercepted at an intercept access point on the network, where the systems and methods of the invention then transmit the intercepted personalized ring back tone to an authorized person or entity, such as a law enforcement agency.

Claims

1. A method for intercepting a transmission of a personalized ring back tone from a network associated with a subscriber to a caller, comprising:

receiving a command to intercept a personalized ring back tone of a subscriber;

identifying a subscriber identity of the subscriber;

determining the existence of the personalized ring back tone associated with the subscriber based at least in part on the subscriber identity, wherein

the determining further comprises determining if the subscriber has customized a personalized ring back tone for a specified caller;

intercepting the personalized ring back tone at an intercept access point as the personalized ring back tone is transmitted to the specified caller from a database for storing the personalized ring back tone, the database associated with a network that corresponds to the subscriber, in response to a call placed to the subscriber by the specified caller; and

transmitting at least a portion of the personalized ring back tone to a recipient.

2. The method of claim 1, further comprising recording at least temporarily at least a portion of the personalized ring back tone transmitted to the specified caller from the database.

3. The method of claim 1, wherein determining the existence of the personalized ring back tone associated with the subscriber based at least in part on the subscriber identity comprises determining the existence of call content data associated with the personalized ring back tone.

4. The method of claim 3, comprising:

intercepting the call content data associated with the personalized ring back tone, the call content data comprising at least one of a telephone number associated with the subscriber, a date of transmission of the personalized ring back tone to the specified caller from the database, a time of transmission of the personalized ring back tone to the specified caller from the database, and a geographic location of the subscriber when the personalized ring back tone is transmitted to the specified caller from the database; and

transmitting at least a portion of the call content data associated with the personalized ring back tone to the recipient.

5. The method of claim 1, wherein determining the existence of the personalized ring back tone associated with the subscriber based at least in part on the subscriber identity comprises determining, by use of a Home Location Register (HLR), the existence of the personalized ring back tone associated with the subscriber.

6. The method of claim 1, comprising intercepting the personalized ring back tone at the intercept access point as the personalized ring back tone is transmitted to the specified caller from the database, wherein the database for storing the personalized ring back tone comprises a C-node for storing the personalized ring back tone.

7. The method of claim 1, comprising intercepting the personalized ring back tone at the intercept access point as the personalized ring back tone is transmitted to the specified caller from the database, the database associated with a network, wherein the network comprises at least one of a Global System for Mobile Communications (GSM) network and a Code Division Multiple Access (CDMA) wireless network.

8. The method of claim 7, further comprising associating a Mobile service Switching Center (MSC) with the Global System for Mobile Communications network.

9. The method of claim 1, comprising intercepting the personalized ring back tone at the intercept access point as the personalized ring back tone is transmitted to the specified caller from the database, wherein the network comprises a Gateway Mobile Switching Services Center (GMSC).

10. The method of claim 1, comprising intercepting the personalized ring back tone at the intercept access point as the personalized ring back tone is transmitted to the specified caller from the database, wherein the network comprises a Personalized Gateway Mobile Switching Services Center that is adapted to support the existence of the personalized ring back tone.

11. The method of claim 1 wherein transmitting at least a portion of the personalized ring back tone to the recipient, comprises transmitting at least a portion of the personalized ring back tone to the recipient wherein the recipient comprises a law enforcement agency.

12. A system for intercepting a transmission of a personalized ring back tone from a network associated with a subscriber to a caller, comprising:

a receiver capable of receiving a command to intercept a personalized ring back tone of a subscriber;

a processor capable of identifying a subscriber identity of the subscriber;

the processor capable of determining the existence of the personalized ring back tone associated with the subscriber based at least in part on the subscriber identity, wherein

the determining further comprises determining if the subscriber has customized a personalized ring back tone for a specified caller;

an interceptor unit for intercepting the personalized ring back tone at an intercept access point as the personalized ring back tone is transmitted to the specified caller from a database for storing the personalized ring back tone, the database associated with a network that corresponds to the subscriber, in response to a call placed to the subscriber by the specified caller; and

a transmitter for transmitting at least a portion of the personalized ring back tone to a recipient.

13. The system of claim 12, further comprising a recording unit for at least temporarily recording at least a portion of the personalized ring back tone transmitted to the specified caller from the database.

14. The system of claim 12, wherein the personalized ring back tone comprises an audio file.

15. The system of claim 12, wherein the personalized ring back tone comprises call content data associated with the personalized ring back tone.

16. The system of claim 15, wherein the call content data comprises at least one of a subscriber telephone number associated with the subscriber, a date of transmission of the personalized ring back tone to the specified caller from the database, a time of transmission of the personalized ring back tone to the specified caller from the database, and a geographic location of the subscriber when the personalized ring back tone is transmitted to the specified caller from the database.

17. The system of claim 12, wherein the network comprises a Home Location Register (HLR) in at least indirect communication with the processor to determine the existence of the personalized ring back tone.

18. The system of claim 12, wherein the database for storing the personalized ring back tone comprises a C-node for storing the personalized ring back tone.

19. The system of claim 12, wherein the network comprises at least one of a Global System for Mobile Communications (GSM) network and a Code Division Multiple Access (CDMA) wireless network.

20. The system of claim 19, wherein the Global System for Mobile Communications (GSM) network is associated with a Mobile Services Switching Center (MSC).

21. The system of claim 12, wherein the network comprises a Gateway Mobile Switching Services Center (GMSC) server associated with the intercept access point.

22. The system of claim 12, wherein the network comprises a Personalized Gateway Mobile Switching Services Center server that is adapted to support the existence of the personalized ring back tone.

23. The system of claim 12, wherein the recipient comprises a law enforcement agency employee.

24. A system for intercepting a transmission of a personalized ring back tone, comprising:

means for receiving a command to intercept a personalized ring back tone of a subscriber;

means for identifying a subscriber identity of the subscriber;

means for determining the existence of the personalized ring back tone associated with the subscriber based at least in part on the subscriber identity, wherein

the means for determining further comprises means for determining if the subscriber has customized a personalized ring back tone for a specified caller;

means for intercepting the personalized ring back tone at an intercept access point as the personalized ring back tone is transmitted to a specified caller from a database for storing the personalized ring back tone, the database associated with a network that corresponds to the subscriber, in response to a call placed to the subscriber by the specified caller; and

means for transmitting at least a portion of the personalized ring back tone to a recipient.

25. A non-transitory storage medium including computer readable instructions, when executed by a processor, the computer readable instructions are configured to:

receive a command to intercept a personalized ring back tone of a subscriber;

identify a subscriber identity of the subscriber;

determine the existence the personalized ring back tone associated with the subscriber based at least in part on the subscriber identity, wherein

the instructions configured to determine further comprises instructions configured to determine if the subscriber has customized a personalized ring back tone for a specified caller;

intercept the personalized ring back tone at an intercept access point as the personalized ring back tone is transmitted to specified caller from a database for storing the personalized ring back tone, the database associated with a network that corresponds to the subscriber, in response to a call placed to the subscriber by the specified caller; and

transmit at least a portion of the personalized ring back tone to a recipient.