Patents by Inventor Iain Alexander Donaldson

Iain Alexander Donaldson 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 system and method for processing call-independent signalling transactions
    Patent number: 6075852
    Abstract: A telecommunications system incorporates a switch based private network having a transparent network signalling system and having a plurality of nodes interfacing each via a switch with an intelligent public network. The public network incorporates a service control point having associated therewith a database containing destination addresses corresponding to call numbers received from the private network. The database provides routing data for call independent signalling information in response to requests from a node on behalf of a private service provided to a user of that node and from a public network switch on behalf of a private service provided to a directly connected user of that switch.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: June 13, 2000
    Assignee: Nortel Networks Corporation
    Inventors: Mark Ashworth, Iain Alexander Donaldson