Patents by Inventor Roger G Ackerley

Roger G Ackerley 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).

  • Telecommunications network having successively utilized different network addresses to a single destination
    Patent number: 6377677
    Abstract: To provide secure communications to a PBX (20,22) the PBX is connected to two different local exchanges of the PSTN. On recognising a telephone number designating calls to the PBX service switching points (2) apply to service control points (8) for route translations. The SCP (8) directs calls though the network alternately to network connections on one DLE (say 1c) and then to the other DLE (1b). In the event of a predetermined number of call failure on one of the route all subsequent calls are directed to the other route until a predetermined number of call failures occur on the other route where upon consecutive calls are again offered alternately.
    Type: Grant
    Filed: May 5, 1998
    Date of Patent: April 23, 2002
    Assignee: British Telecommunications public limited company
    Inventors: Roger G Ackerley, Peter B Key, Mark Woolley