DEVICE FOR CONTROLLING DIGITAL PHONE SET Russian patent published in 1994 - IPC

FIELD: electric communication. SUBSTANCE: device has handset lever position signal former 1, the first, the second and the third input bars 2, 16, 17, information signal selector 3, sync pulse selector 4, the first and the second information input bars 5, 15, transmittance information signal former 6, the first, the second output bars 7, 18, dial input signal former 8, dial input bars 9, dial output signals former 10, dial output bars 11, signal selector 12, unit 13 for uniting signals, counter 14, the first, the second and the third control output bars 19, 20 and 21, descrambler 22, scrambler 23, activity permittance signal former 24, inhibition interval former 25 after the handset is put on levers, duty mode signal former 26, permittance interval former 27, digital phone set members power turning-on signal former 28, activity signal former 29. EFFECT: reduced error when digital phone set is under control. 1 dwg