GAIN CONTROL DEVICE AND METHOD BY CALL TASK IN PRIVATE BRANCH EXCHANGE

摘要

PURPOSE: A gain control device by a call task in a PBX(Private Branch Exchange) is provided to improve call processing efficiency, and to control transceiving gains to perform a call task. CONSTITUTION: A line processing module(300) interfaces a gain control message for controlling transceiving gains of an SLI(Subscriber Line Interface) card(100) and a trunk card(200). A main control processing module(400) transmits the gain control message controlling an address and a data bit to the line processing module(300).