Abstract: The invention concerns a method and a device for the establishment of a telephone connection between a first operator (10 at a technical installation (1) and a second person (17) supporting the first person (10) by telephone. To establish the telephone connection, the first person (10) contacts a first computer (11) with a first telephone (5) and transmits it an identification (MR1245_T10) assigned to the workings at the technical installation (1). Thereupon, the first computer (11) determines, based on information which is stored in a list (13a) assigned to the identification (MR1245_T10), the telephone number of a second telephone (17a) assigned to a second person (17) and establishes the telephone connection between the first and the second telephone.

Abstract: The invention concerns a method and a device for the request of data (13a) required for an execution of operations at a technical installation (1). If for example a technician (12) requires additional information regarding the technical installation (1) during his operations at the technical installation (1), he contacts with a first communication terminal (5, 15, 16, 17) a central computer (6) and transmits it his identity, data regarding the technical installation (1) and an address of a second communication terminal (15, 16, 17). The central computer (6) then requests at least a part of the data record (13a) stored in a database (13) and associated to the technical installation, to transmit the record to the second communication terminal (15, 16, 17).