Surveillance implementation in managed VOP networks
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United States of America Patent
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Sep 8, 2009
Grant Date -
Aug 11, 2005
app pub date -
Feb 10, 2005
filing date -
Feb 11, 2004
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Abstract
A procedure for accomplishing surveillance within a managed VoP network when end-user encryption/decryption and NAT are in place. The procedure comprises first analyzing the network from call signaling and message standpoints, leading to the identification of suitable surveillance access points (SAPs) for packet interception. A Delivery Function (DF) facilitated by the network service provider provides the means to intercept (without alteration) and replicate packets transmitted across the SAPs. The packets are then transmitted via the DF for collection within a Collection Function (CF), which is managed by a Law Enforcement Agency (LEA), for analysis by the LEA. This analysis provides, among other benefits, the opportunity to decrypt the intercepted packets and to identify additional suitable SAPs. In demonstrating the procedure, several embodiments of network surveillance models are described. Each one identifies the location of SAPs for that model. In each model, different information is collected and different processes are followed.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- TELOGY NETWORKS, INC.;TEXAS INSTRUMENTS INCORPORATED
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Greenstreet, Debbie E | Fairfax , US | 1 | 91 |
Scoggins, Shwu-Yan Chang | Herndon , US | 8 | 232 |
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