乌鲁木齐铁路局柳园电务段发扬自力更生,艰苦奋斗的革命精神,利用原电子管会议电话总机,试制成功了晶体管音控会议电话汇接机,从根本上排除了会议室回损的不良因素,减小了电话会议电路杂音,清除了电话会议振鸣,提高了电话会议质量。晶体管音控会议电话汇接机,是利用讲话的声音电平来自动控制对讲的原理制成的。在正常情况下,对讲不需要人工操纵,在各会议分机保持定电平、定步位的情况下,汇接机各个电位器平时不需要调 Urumqi Railway Bureau Liuyuan Power Station to promote self-reliance and hard work of the revolutionary spirit, the use of the original tube Conference telephone switchboard, trial success of the transistor audio conference call tandem machine, ruled out the adverse effects of loss of meeting rooms, minus Small telephone conference circuit noise, clear the conference call vibration, improve the quality of conference calls. Transistor audio conference call tandem machine, is the use of speech sound level to automatically control the principle of intercom made. Under normal circumstances, intercom does not require manual manipulation, in the conference extension to maintain a fixed level, the pace of the case, the convergence of the potentiometer usually do not need to adjust