Image Number 2 for United States Patent #7324464.
The communication system includes multiple participating devices connected with each other by a data line. At least one connection device for connection to a corresponding participant device defined as associated with it is connected to the data line. The communication system is preferably an IP network and with respective connection devices defined as associated with corresponding participating devices, which are used to connect portable operating and display terminals with the participating devices. For definite identification of the corresponding participating device associated with the respective connection devices, the connection devices include readable means of identifying the corresponding participating device, e.g. including a stored IP address, which is readable by the connected interface device, i.e. the terminal.