COMMUNICATION SYSTEM AND METHOD FOR PROCESSING SIGNAL USING COMMUNICATION SYSTEM

摘要

PURPOSE: A communication system and a method for processing a signal using the system are provided to make a forced cancel against a tone signal when an urgent situation occurs, by configuring the systems, which generates tone signals used in various kinds of trunk lines, to a signal repeater system board. CONSTITUTION: A frequency tone matching part(1) enables a signaling operation with an exchange(101) or a trunk line between stations using a frequency tone in a repeater system board(100). An asynchronous time division(ATD) controller(2) is connected to a special repeat board(102) which monitors the trunk line. A parallel bus controller(4) controls the information exchange between the board(100), exchange(101), a CPU(3) and subscriber board(103). The CPU(3) analyzes and stores the received signals from the exchange(101) or board(103). A input/output part(7) takes over a signal input and output with an external device. A combo part(8) includes one chip where a CODEC and filter are mounted. An oscillator(9) divides various clocks and system clocks used for a message exchange. A circuit(10) provides enable signals and control signals. A direct voltage part(11) supplies a voltage of -5V to the boards.