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Intercepting a call connection to a mobile subscriber roaming in a visited PLMN (VPLMN)

  • US 7,565,146 B2
  • Filed: 12/21/2001
  • Issued: 07/21/2009
  • Est. Priority Date: 12/21/2001
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • initiating a connection establishment between a calling terminal and a called terminal,requesting, during connection establishment, a subscriber database of a first mobile network, to provide subscriber related information for the called terminal, the first mobile network being a home mobile communication network of the called terminal,detecting that both the called terminal and the calling terminal are located in a second mobile communication network visited by the roaming called terminal;

    detecting that said requested information contains an indication that connections to said called terminal are to be intercepted;

    establishing the connection from the calling terminal via a gateway functionality of the second network to a gateway functionality of the first network, back to the gateway functionality of the second network and further to the called terminal; and

    tapping the established connection between the called and calling terminal at the gateway functionality of the first network,said tapping comprising forwarding duplicates of the intercepted data.

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