Method and apparatus for monitoring voice conversations from customer premises equipment

• US 7,027,398 B2
• Filed: 04/12/2001
• Issued: 04/11/2006
• Est. Priority Date: 04/12/2001
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: General Instrument Corporation (CommScope Holding Company, Inc.)
• Inventors: Fang, Zheng
• Primary Examiner(s): Nguyen, Brian
• Assistant Examiner(s): Phan, Tri H.
• Application Number:
  US09/833,291
• Publication Number:
  US 20020150081A1
• Time in Patent Office: 1,825 Days
• Field of Search: 370/409, 370/260, 370/241, 370/33, 370/390, 370/389, 370/356, 370/352, 370/235, 709/226, 379/35
• US Class Current: 370/235
• CPC Class Codes: A61B 2017/00247 Making holes in the wall of the heart, e.g. laser Myocardial revascularization
• CPC Class Codes: A61B 2017/00252 for by-pass connections, i.e. connections from heart chamber to blood vessel or from blood vessel to blood vessel
• CPC Class Codes: A61B 2018/00392 Transmyocardial revascularisation
• CPC Class Codes: A61F 2/2493 Transmyocardial revascularisation [TMR] devices
• CPC Class Codes: A61F 2/94 Stents retaining their form, i.e. not being deformable, after placement in the predetermined place
• CPC Class Codes: H04L 41/00 Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
• CPC Class Codes: H04L 43/00 Arrangements for monitoring or testing data switching 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 7/006 Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP) , including next generation networks with a packet-switched transport layer H04L65/00 takes precedence; aspects not specific to the type of network H04M3/00; special services in those networks H04M3/42

Abstract

An apparatus and associated method for monitoring telephone communications from the customer premises equipment (CPE) (and the subscriber telephone equipment attached thereto) in a VoIP system. The apparatus comprises a real time protocol mirror. The real time protocol (RTP) mirror is included in the CPE and can be controllably altered between two mirror states. The RTP mirror provides for original RTP packet transmission between a plurality of CPEs in both the first mirror state and the second mirror state. In the first mirror state the RTP mirror limits the transmission of a copy RTP packet from the RTP mirror. In the second mirror state the RTP mirror provides for transmission of the copy RTP packet. The apparatus may also include a network and a RTP server. The network transfers copy RTP packets to or from the CPE to the RTP server. The RTP server is located on the network to receive the copy RTP packets generated by the RTP mirror.

Claims

1. An apparatus for monitoring voice over Internet (VoIP) signal communications originating from the customer premises equipment (CPE), the apparatus comprising:

a real time protocol (RTP) mirror included in the CPE, the RTP mirror can be controllably altered between two mirror states, in both the first mirror state and the second mirror state the RTP mirror provides for transfer of original RTP packets to or from the CPE;

in the first mirror state the RTP mirror limits transfer of a copy RTP packet from the RTP mirror, in the second mirror state the RTP mirror provides for transfer of the copy RTP packet from the RTP mirror.

2. The apparatus of claim 1, further comprising a network transferring original RTP packets between the CPE and a second CPE, wherein the network supports a packet switching protocol.

3. The apparatus of claim 1, further comprising:

a network transferring copy RTP packets to or from the CPE; and

a RTP server located on the network that receives those copy RTP packets generated by the RTP mirror.

4. The apparatus of claim 3, further comprising a Management Information Base (MIB) that verifies the identity of the RTP server.

5. The apparatus of claim 4, wherein the MIB uses the SNMP v3 protocol to verify the identity of the RTP server.

6. The apparatus of claim 4, wherein the RTP mirror can only be changed to the second mirror state if the MIB verifies the identity of the RTP server.

7. The apparatus of claim 1, further comprising a call agent, wherein the call agent establishes a RTP call that transfers the original RTP packets, and the call agent further establishes a RTP monitor call that transfers the copy RTP packets.

8. The apparatus of claim 1, wherein the RTP mirror is enabled when it is in the second mirror state.

9. The apparatus of claim 1 further comprising a network transferring original RTP packets between the CPE and at least a second CPE, wherein the network supports a packet switching protocol.

10. An apparatus that is configured to receive copy RTP packets that represent copies of original RTP packets transmitted between a plurality of consumer premises equipment (CPE), the apparatus comprising:

a RTP server receiving copy RTP packets from a remote network location and that generates a RTP monitor call in response to the received copy RTP packets; and

a real time protocol (RTP) mirror included in the customer premises equipment (CPE), the RTP mirror can be controllably altered between two mirror states, in both the first mirror state and the second mirror state the RTP mirror provides for transfer of original RTP packets to or from the CPE;

in the first mirror state the RTP mirror limits transfer of copy RTP packets from the RTP mirror, in the second mirror state the RTP provides for transfer of the copy RTP packets.

11. A method of monitoring voice communications, comprising:

identifying a first voice over Internet (VoIP) consumer premises equipment (CPE) to monitor voice communications;

establishing an RTP call between the first VoIP CPE and a second CPE; and

establishing an RTP monitor call between the first VoIP CPE and a RTP server,

wherein the RTP call is established from an RTP mirror included in the first VoIP CPE.

12. The method of claim 11, wherein the RTP call is established using original RTP packets, and the monitor RTP call is made using copy RTP packets.

13. A method of monitoring voice communications, comprising:

identifying a first voice over Internet (VoIP) consumer premises equipment (CPE) to monitor voice communications;

establishing an RTP call between the first VoIP CPE and a second CPE; and

establishing an RTP monitor call between the first VoIP CPE and a RTP server, and

verifying the identity of the RTP server using a Management Information Base (MIB).

14. An apparatus for monitoring voice over Internet (VoIP) signal communications extending from a first customer premises equipment (CPE) to a second CPE, the apparatus comprising:

a RTP server;

a RTP mirror included in the first CPE, the RTP mirror can be controllably altered between two mirror states, in both the first mirror state and the second mirror state the RTP mirror provides for original RTP packet transfer between the first CPE to the second CPE, in the first mirror state the RTP mirror limits transfer of a copy RTP packet from the RTP mirror to the RTP server, in the second mirror state the RTP mirror provides for transfer of the copy RTP packet to the RTP server; and

a call agent that first sets up a RTP monitor call that transfers the copy RTP packets from the RTP mirror to the RTP server, the call agent then establishes a regular call that transfers the original RTP packets from the first CPE to the second CPE.

15. The apparatus of claim 14, further comprising a Management Information Base (MIB) tat verifies the identity of the RTP server to place the RTP mirror in the second mirror state.

16. A method for monitoring telephone communications extending from a first customer premises equipment (CPE) to a second CPE, the method comprising:

controllably altering a real time protocol (RTP) mirror between two mirror states, the RTP mirror providing for original RTP packet transfer from the first CPE to the second CPE in both the first mirror state and the second mirror state, limiting transfer of a copy RTP packet from the RTP mirror to a RTP server in the first mirror state;

providing for transfer of the copy RTP packet from the RTP mirror to the RTP server in the second mirror state;

providing for transfer of the original RTP packets from the first CPE to the second CPE; and

establishing a RTP monitor call that transfers the copy RTP packets from the RTP mirror to the RTP server.

17. The method of claim 16, further comprising verifying the identity of the RTP server prior to any copy RTP packets are transmitted from the RTP mirror to the RTP server.

18. The method of claim 16, further comprising the instance of RTP mirror can be located on the CMTS which controls the first CPE.