Method for Lawfully Intercepting Communication IP Packets Exchanged Between Terminals
First Claim
1. A computer-implemented method for lawfully intercepting communication IP packets exchanged between a first terminal having a first IP address and a second terminal having a second IP address, the method comprising:
- first equipment in a data network of a first communications service provider transmitting a third IP address to the first terminal for use as a source IP address of the first terminal in a field of session establishment messages to be transmitted from the first terminal to establish communication between the first terminal and the second terminal,the first equipment and/or second equipment in the data network receiving at least some of the communication IP packets; and
intercepting the communication IP packets in the data network.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for lawfully intercepting communication IP packets exchanged between terminals is provided. The method involves assigning an IP address associated with a telecommunication service provider to, for example, a sending terminal for use as its IP address in communications with a receiving terminal, the telecommunication service provider providing SIP proxy services for establishing communication between the sending and receiving terminals. The communication IP packets are intercepted in such a way that the terminals are unaware of the interception.
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Citations
40 Claims
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1. A computer-implemented method for lawfully intercepting communication IP packets exchanged between a first terminal having a first IP address and a second terminal having a second IP address, the method comprising:
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first equipment in a data network of a first communications service provider transmitting a third IP address to the first terminal for use as a source IP address of the first terminal in a field of session establishment messages to be transmitted from the first terminal to establish communication between the first terminal and the second terminal, the first equipment and/or second equipment in the data network receiving at least some of the communication IP packets; and intercepting the communication IP packets in the data network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A computer-implemented method for lawfully intercepting communication IP packets exchanged between a first terminal having a first IP address and a second terminal having a second IP address, the method comprising:
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first equipment in a data network of a first telecommunications service provider transmitting a third IP address to the first terminal for use in a SDP (Session Description Protocol) connection field of SIP (Session Initiation Protocol) messages to be transmitted by the first terminal to establish communication between the first terminal and the second terminal, the first equipment and/or second equipment in the data network receiving from the first terminal encapsulated IP packets with an outer header containing the first IP address, a inner header containing the third IP address, and a destination address, the first and/or second equipment removing the outer header before sending the communication IP packets to the destination address; and intercepting the communication IP packets in the data network. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification