Patents Assigned to Teledex LLC
  • Patent number: 7251321
    Abstract: Crescendo telephone ringers and methods of providing a crescendo telephone ring signal. The crescendo telephone ringer provides a gradual increase in audible ringing volume as a sequence of incoming electrical ring signals is detected. According to one embodiment, upon receipt of an incoming call, a first audible ring signal corresponding to a first detected electrical ring signal is set to a minimum volume. Subsequent audible ring signals corresponding to subsequent detected electrical ring signals are set to increasing volume levels, and finally to a maximum ringer volume.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: July 31, 2007
    Assignee: Teledex LLC
    Inventors: Ronald S. Lesniak, Spencer L. Hermanson, Maxim Bakaleynik, Mario E. Jauregui
  • Patent number: 6456713
    Abstract: A circuit for notifying a PBX that a data port in a telephone connected to the PBX is about to be used. The circuit comprises a current sensor for generating a signal that indicates a modem is drawing current through the data port. A large resistor limits the current being drawn through the data port to a level that does not indicate an off-hook condition to either the PBX or the modem. In response to the signal generated by the current sensor, a separate telephone circuit provides an off-hook condition that draws a first dial tone from the PBX. A microprocessor in the circuit generates a signal that causes a dialer in the telephone circuit to dial a number that notifies the PBX that the modem is attempting to access the PBX through the data port. After the PBX is notified of the imminent data port usage, it presents a second dial tone on line two which is the dial tone for an outside line.
    Type: Grant
    Filed: July 2, 1998
    Date of Patent: September 24, 2002
    Assignee: Teledex LLC
    Inventors: Mario E. Jauregui, Elaine C. He, Ronald S. Lesniak, Spencer L. Hermanson, Maxim Bakaleynik