FIELD: electrical communication. SUBSTANCE: device has commutation system and control unit. Said control unit is equipped with input for connection of external control device. Channel inputs of commutation system are connected to transmission channels. Station inputs are connected to user lines. Goal of invention is achieved by introduced call signal receivers and control signal transceiver. EFFECT: simplified design, increased functional capabilities. 1 dwg
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Authors
Dates
1999-08-27—Published
1997-06-30—Filed