Device for remotely supervising operation of a branched data-transmission network
AssigneeTe Ka De Felten & Guilleaume Fernmeldeanlagen GmbH
InventorsDirk Baackmann, Georg Hecht, Johann Schlagenhaft, Karl Schnell
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Abstract
A rotary switch selects individual incoming transmissions which characterize the actual operation of amplifiers and like components within a data-transmission network. A memory is programmed with data characteristic of incoming transmissions which indicate proper operation of the components actually supervised. As the rotary switch selects an individual transmission, the transmission is interpreted and compared with the data stored in the memory. In the event that a defective component is detected, an alarm sounds and repairs can be quickly made since the individually defective component can be identified automatically.
Claims3
A device for remotely supervising operation of a data transmission network which contains a plurality of subnetworks branching from one another, comprising
- a plurality of transmitters operatively connected to individual locations in respective sub-networks and each operating at an assigned characteristic frequency;
- means for scanning in consecutive scanning cycles characteristic frequencies of respective transmitters whereby all said characteristic frequencies are scanned during each of said consecutive scanning cycles;
- means connected to said scanning means for interpreting the scanned responses of respective transmitters as to the presence or absence of the characteristic frequency thereof;
- means connected to said interpreting means for storing at separate storing locations the successive responses interpreted in one scanning cycle;
- means connected to said storing means and to said interpreting means for comparing the responses stored during the one scanning cycle with responses interpreted during the subsequent scanning cycles;
- and
- means connected to said comparing means for signalling differences between the stored responses and the subsequent responses to determine, according to the storing locations, the operational conditions of the supervised sub-networks.
Dependencies are inferred from the claim text.