SUBSCRIBER SWITCHING AND MEASUREMENT DATA ACQUISITION DEVICE Russian patent published in 1997 - IPC

FIELD: telephone communications; low-capacity telephone exchanges also functioning to receive measurement data. SUBSTANCE: device has 4n subscriber's sets, 4m incoming line sets, four first-step switching units 3₁-3₄ with (n+m+l) inputs and eight outputs, conference-call set 4, dialing receivers 5₁-5₄, second-step switching units 6, "K" sets of outgoing connecting lines 7₁-7_K, interface unit 8, storage unit 9, and control unit 10. Device having small quantity of switching equipment can organize external and internal communication between subscribers, conference communication, and at the same time it can acquire, process, store, and transmit measurement data. EFFECT: enlarged functional capability. 1 dwg