Patents Assigned to AT&T Intellectual Property I, L.P., by transfer of ownership from AT&T Delaware Intellectual Property, Inc.
  • Identifying phone calls for internet telephony feature handling by routing the phone calls to a softswitch via a dedicated trunk
    Patent number: 9531762
    Abstract: A communication system includes a plurality of time division multiplexed (TDM) public switched telephone network (PSTN) trunks, a Signal Control Point (SCP), a Softswitch, and an Internet telephony call controller. The SCP a plurality of phone numbers for time division multiplexed TDM PSTN lines with an Internet telephony feature group that has Internet telephony feature handling. The SCP routes phone calls that are directed to phone numbers in the Internet telephony feature group through at least one dedicated trunk of the PSTN to the Softswitch. The Softswitch routes phone calls that it receives on the dedicated trunk to the Internet telephony call controller for Internet telephony feature handling.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: December 27, 2016
    Assignee: AT&T Intellectual Property I, L.P., by transfer of ownership from AT&T Delaware Intellectual Property, Inc.
    Inventors: Stephen La Pierre, Shiejye Geoffrey Lin
  • Methods, systems, and computer program products for dynamic management of security parameters during a communications session
    Patent number: 7461398
    Abstract: A method of managing security parameters for a communications session includes dynamically assigning security parameters during the communications session responsive to changing aspects of the communications session to provide a variable degree of security for the session. Related systems and computer program products are also discussed.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: December 2, 2008
    Assignee: AT&T Intellectual Property I, L.P., by transfer of ownership from AT&T Delaware Intellectual Property, Inc.
    Inventor: Jeffrey A. Aaron