ACOUSTIC EQUIPMENT CONNECTING DEVICE

摘要

PURPOSE:To adjust input volume with a connecting device itself, to facilitate the execution of a simultaneous call and a meeting call, and to simplify the equipment of an acoustic equipment by providing a sending volume adjusting means. CONSTITUTION:When a lock switch 106 is turned on, a present device 100 is made into a call connecting condition to a subscriber line. An amplifier 109 amplifies the voice of a directly connected microphone and a level adjusting circuit 110 adjusts the level of an input from the amplifier 109 and a line input terminal 114. A light emitting source 107 executes the LED light emission when the switch 106 is in a connecting condition. As this result, an input volume is adjusted in the connecting device 100.