×

Phone-independent key expansion module

  • US 20070171098A1
  • Filed: 02/16/2007
  • Published: 07/26/2007
  • Est. Priority Date: 07/20/2005
  • Status: Active Grant
First Claim
Patent Images

1. A button box device configured to enable a user to invoke a call control function, comprising:

  • a key to which the call control function has been assigned;

    a display; and

    a key press event module configured to send a key press event to a switch via a telephone and via a packet-switched network, wherein the button box device does not comprise an audio input device.

View all claims
  • 12 Assignments
Timeline View
Assignment View
    ×
    ×