在打电话时常常会碰到这样的情况:如甲打电话找乙,接电话的却是丙,丙放下电话再去找乙,此时电话若摆放不当,可能产生噪音或共鸣,另外,打入者也会因等候接听过长产生烦噪情绪;而且若室内有其他同线分机,乙就近用另一分机与甲通话,通话结束后乙挂机。此时丙 When calling often encounter such a situation: If a call to find B, answer the phone is C, C put down the phone and then go to B, then the phone if placed properly, may produce noise or resonance, the other, Intruders will also be waiting for long received annoying emotions; and if there are other indoors with the same extension, B recently with another extension and a call, after the call B hang up. At this point C