COMMUTATION AND CONFERENCE-CALL DEVICE FOR INFORMATION EXCHANGE SYSTEM

communication equipment. SUBSTANCE: device has digital unit for establishing conference call, and multiple units for establishing commutation and conference calls. EFFECT: simplified control. 3 cl, 6 dwg

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1. Verfasser: DZAE-MIN PARK
Format: Patent
Sprache:eng
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Zusammenfassung:communication equipment. SUBSTANCE: device has digital unit for establishing conference call, and multiple units for establishing commutation and conference calls. EFFECT: simplified control. 3 cl, 6 dwg