The software Telecontrol Server Basic now checks the connection enquiry of the CP with the data stored in the design. A Remote Station is always identified by the project number, station number and slot number (This three values are generating a six-digit identification number). A password for the authentication of the Remote Station is additionally scanned. If the connection enquiry is evaluated successfully the Software Telecontrol Server Basic updates the internal routing table entry related to this Remote Stationand the corresponding IP address of the CP. Between the CP of the Remote Station and the Central Station there is a connection for the transmission of TCP/IP packages. The Telecontrol System shown here uses this TCP/IP connection to transmit in both directions with the help of an individual log.