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一、来电只晌一、二声。这种故障一般是时有时无,而且铃声微弱,但不会影响正常的通话,只是偶尔会有杂音。引起此故障的原因多为室内电话线装修时被压在了地板下,而且分机较多,长时间被挤压容易造成电话线外皮破损。由于线间破损处不时碰触,形成半短路状态,铃流由于漏电,只响一、二下就无力再响了。试将话机直接接到进户线上外线侧,如果故障消失说明室内线路有故障。在进入室内总线端子处,分别切断分机进行连线试验,以确定哪一条线不良,找出不良线更换后故障即可排除。
First, the call only one or two times. This failure is usually from time to time, and the ring tones weak, but will not affect the normal call, but occasionally there will be noise. The cause of this failure are mostly indoor telephone line decoration was pressed under the floor, and more extensions, a long time being squeezed easily lead to skin damage to the telephone line. As a result of the line between the damaged Department from time to time to touch, the formation of semi-short-circuited state, ringing due to leakage, only ring one or two on the weakness and then rang again. Try the phone directly to the incoming line on the outside line, if the failure disappears indoor line is faulty. Into the indoor bus terminal, respectively, cut off the extension connection test to determine which line is bad, find out the fault line replacement can be ruled out.