1、语音通话呼叫失败说明通话没有成功，没有成功连接对开发者_运维问答方。2、原因：没有手机信号，比如对方没有手机信号造成的。解决方法：确保双方都有手机信号。3、对方关机。解决方法：对方开机以后重新拨打[详细]
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