Patent ID: 6049598
Filing Date: 2000-04-11
Classification: H04M,H04N

Abstract:
A facility (EIN) for tying a door intercommunication system with a video camera to an integrated services digital network (ISDN), said facility (EIN) comprisingan audio unit (AUD1) for coupling audio signals of the door intercommunication system to the digital network (ISDN),a video unit (VID1) for coupling video signals of the video camera to the digital network (ISDN), anda control unit (CTRL) for transmitting a request signal for establishment of a switched connection for transmitting the video and audio signals over the digital network (ISDN) in the event of an operation of the door intercommunication system as well as for receiving control signals and for transmitting the control signals to at least one remotely controllable unit (UNIT) without breaking the switched connection.