Abstract: A voice-recognition unit is interfaced with the connection to an ordering server provided within a switching exchange. This voice-recognition unit recognizes individual key words from vocal utterances supplied by a user via a calling line unit and activates a dialog control device located in the ordering server. As a result, the dialog control device activates a call number memory, a call number corresponding to the recognized key word being read out, which serves to establish a connection to an exchange receiving this order. The voice-recognition unit interfaced with this connection can likewise recognize key words from the answer coming from the calling exchange, whereupon criteria are formed, indicating whether the order had been properly received or not. Different types of orders can be placed quickly using simple dialing and operator control procedures and through vocal utterances.
Abstract: A circuit arrangement converts signals and information between analog junction lines and digital terminal devices in communications exchanges. A decentralized control device is provided in order to process and pass on switching criteria and codes received and sent to the respective analog junction line, inside and outside the audio frequency band, the circuit arrangement including a plurality of line interfaces, each coupled directly to a respective one of the decentralized control devices, for the switching criteria and codes to be exchanged outside of the audio frequency. At least one digital signal processor is provided for processing the codes to be exchanged within the audio frequency band, the digital signal processor being looped in via a hybrid connection and converter in a speech path which cooperates with the control device.
Abstract: A telecommunications system operable to connect terminal devices for exchange of data has control devices (ST, GST), an accessory control device (HS), and a memory (SP). The control devices effect addressed connections via hierarchical coupling fields (KF) to which terminal devices (T, PC, VP) and/or transmission lines (VL) are coupled, each by two user channels and one signalling channel. Routine transmissions to and from a telephone apparatus (T), computer (PC) or the like are effected by connection addressing codes transmitted on the signalling channel. For special functions or transmissions, a unique code is inserted in the signalling data, which causes the control device (GST, ST) to pass the signalling data to the accessory control device (HS). The accessory control device replaces the unique code with a connection addressing code if the terminal is authorized, and returns the signalling information to the control device, where it effects the desired connection.
Abstract: The invention concerns a terminal device for picture communication, having a picture screen and a video camera for image transmission of the participant and for photographing of documents, drawings, plans, etc., with the video camera capable of being pivotably positioned vertically corresponding to the picture to be photographed and being mounted at the end of a swivel arm that is horizontally adjustable to different positions.
February 13, 1990
Date of Patent:
April 30, 1991
Gunther Witzel, Bruno Widmann, Franz Muller