Processing system for answer of private branch exchange
专利汇可以提供Processing system for answer of private branch exchange专利检索，专利查询，专利分析的服务。并且PURPOSE:To make it possible to dial in directly without modifying the number plan of a pay station circuit, by sending out a signal which requests by itself an extension dial number to be connected to a subscriber after detecting an incoming call from a main wire. CONSTITUTION:A calling signal equivalent of a call of main wire 1 is transmitted to trunk circuit 3 by way of master distributing frame 2 so as to inform control circuit 4 of the existence of the call, and then, circuit 4 commands the formation of the main wire loop of circuit 3, thereby informing the office of the incoming. On the other hand, circuit 4 connects circuit 3 to talkie circuit 5 and push-button dial receiver 6 via switch network 7, and circuit 5 outputs in words ''This in 000 speaking. If you are calling by a push-button dial system, please dial the desired extension number. When you are not sure of the number, please dial number XXX. On the other hand, if you are using a rotary dial system, hold on please.'' After the calling subscriber dials the connection-desired extension number according to the instruction, the input informaton of the push-button dial is inputted to receiver 6 since it is within the sound band, so that the dial-in will be executed.，下面是Processing system for answer of private branch exchange专利的具体信息内容。
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