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全局拨号音为什么不正常广西Ｓ１２４０维护中心邵家川某局曾发生全局拨号音不正常的故障，现象为：凡话机类型为双音频或兼容的，摘机后，１０次只有一两次能听到拨号音，其余听拥塞音或什么音也听不到。脉冲话机则无此现象。此次故障是在第二次扩容硬件测试期间，Ｄ侧的...
Global dial tone is not normal Guangxi S1240 Maintenance Center Shao Jiachuan an overall situation has occurred dial-tone abnormal failure, as follows: Where the type of dual-band audio or compatible, pick up, 10 times only once or twice to hear the dial-up Tone, the rest to listen to the congestion sound or what tone can not hear. Pulse phone is no such phenomenon. The fault is in the second expansion of hardware testing, D side ...