Patent Document ID: 7587757
Application ID: 11054969
Patent Flag: 1

Claim One:
1. A method of electronic surveillance in a network comprising the steps of: analyzing said network, relative to one or a plurality of targeted devices, to identify one or a plurality of access points for electronic signal interception as surveillance access points based on the system configuration and operation parameters of said network, said network being a voice over packet (VoP) network, wherein said analyzing comprises: inserting, at one or a plurality of candidate access points, into packet messages being forwarded in the network, an IP address assigned to the candidate access points into the optional router header as router information for identifying the candidate access points closest to the targeted devices as said surveillance access points, when there is no router information in the packet messages as received at the candidate access points; operatively connecting interception devices to said network at said surveillance access points; performing electronic surveillance by intercepting electronic packet messages at the surveillance access points via said interception devices, wherein said packet messages comprise one of configuration files, security association messages, call management signals and associated call contents, and wherein said intercepting comprises: receiving packet messages with VoP call set-up signals indicating who the message is going to and originating from one of the targeted devices during security association set up and transmitting replications of the packet messages with call set-up signals to one or a plurality of processing devices for surveillance processing; after call set-up is complete, receiving a request for call content from the one or a plurality of processing devices; after receiving the request for call content and until the VoP call ends, receiving without altering said packet messages, and transmitting replications of said packet messages when they belong to the VoP call to the one or a plurality of processing devices for surveillance processing; performing surveillance processing of intercepted packet messages to determine additional said surveillance access points and decrypting said packet messages.