Patents by Inventor Axel Christiansen

Axel Christiansen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of accessing a SCP in an ISUP network with partial release
    Patent number: 6075855
    Abstract: A SCP connected to a switch through an ISUP loop-back trunk redirects a dialed call to an intermediate destination. After the intermediate destination releases the call, all circuit segments from the intermediate destination back through and including the inbound (to the MSC) side of the loop-back trunk are cleared. The SCP then establishes a connection through the inbound leg of the loop-back trunk to the dialed destination. The SCP remains in the circuit for the duration, including all intermediate call completions as well as the call to the dialed destination. When the call to the dialed destination is complete, the entire connection is released per standard ISUP procedures.
    Type: Grant
    Filed: February 9, 1998
    Date of Patent: June 13, 2000
    Assignee: AG Communication Systems Corporation
    Inventors: Axel Christiansen, Marvin Gene Distel