Patents by Inventor Christopher L. Welch

Christopher L. Welch 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).

  • System and method for controlling media gateways that interconnect disparate networks
    Patent number: 7085264
    Abstract: A system and method for controlling media gateways that interconnect disparate networks is disclosed. In a preferred embodiment, the method comprises receiving a request for a circuit service call channel, the request comprising information identifying a media gateway selected out of a plurality of media gateways, the selected media gateway having a TDM circuit selected out of a plurality of TDM circuits associated with it; selecting an ATM VCC from a plurality of ATM VCCs associated only with the selected media gateway; and transmitting an Establish Request to a Q.2630 module of a signaling gateway.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: August 1, 2006
    Assignee: Nortel Networks Limited
    Inventors: Wesley R. Erhart, Christopher L. Welch, Paul H. Boudreaux
  • System and method for controlling media gateways that interconnect disparate networks
    Publication number: 20030112788
    Abstract: A system and method for controlling media gateways that interconnect disparate networks is disclosed. In a preferred embodiment, the method comprises receiving a request for a circuit service call channel, the request comprising information identifying a media gateway selected out of a plurality of media gateways, the selected media gateway having a TDM circuit selected out of a plurality of TDM circuits associated with it; selecting an ATM VCC from a plurality of ATM VCCs associated only with the selected media gateway; and transmitting an Establish Request to a Q.2630 module of a signaling gateway.
    Type: Application
    Filed: December 18, 2001
    Publication date: June 19, 2003
    Inventors: Wesley R. Erhart, Christopher L. Welch, Paul H. Boudreaux