| 摘要 |
500,414. Wired - wireless systems. LORENZ AKT.-GES., C. June 14, 1938, No. 17672. Convention date, June 15, 1937. [Class 40 (iv)] In a wired-wireless system, high frequency oscillations are applied to telephone lines in the main distributing devices of an exchange. A terminal strip for a distributing device in such a system comprises a base plate 1 carrying a box 2 at one side for electric separating filters and ribs 3 and 4 on the other side supporting soldering tabs 5, 6, 7 and 8, 9, 10 arranged in rows. A covering plate 11 is provided with soldering tabs 12 and 13, one tab 12 being allotted to each three-wire group of subscribers lines attached to the tabs 5, 6, 7. High frequency currents of different amplitudes are applied to conductors 14, Fig. 3, connecting the tabs 13 in groups. Each tab 12 is connected to a line 14 supplying currents of a suitable amplitude by means of a short connection 15. The exchange lines are connected to the tabs 8, 9, 10, these tabs and the tab 12 are connected to the L.F. and the H.F. inputs of the corresponding filter respectively, and the output of the filter is connected to the tabs 5, 6, 7 and so to the subscriber's line.
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