Patents by Inventor Karin Groetzner

Karin Groetzner 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, method and computer program for changing over between a voice transmission and a fax transmission
    Patent number: 7385964
    Abstract: To switch back a fax transmission in line with T.38 to a voice transmission over an IP network, the invention proposes transferring the transmission data stored in the media gateway controller at a first end to the media gateway controller at a second end over a signaling network. Thereby, causing the codecs in the media gateway at the second end and the media gateway at the first end to be switched back together.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: June 10, 2008
    Assignee: Siemens Aktiengesellschaft
    Inventors: Thomas Baumann, Karin Groetzner
  • System, method and computer program for changing over between a voice transmission and a fax transmission
    Publication number: 20030118008
    Abstract: To switch back a fax transmission in line with T.38 to a voice transmission over an IP network, the invention proposes transferring the transmission data stored in the media gateway controller at a first end to the media gateway controller at a second end over a signaling network. Thereby, causing the codecs in the media gateway at the second end and the media gateway at the first end to be switched back together.
    Type: Application
    Filed: October 22, 2002
    Publication date: June 26, 2003
    Inventors: Thomas Baumann, Karin Groetzner