设备端拨号之后，callPageOnShow2秒，马上调用forceHangup()挂断，event如下，endVoip会有2次。finishVoip之后就不要再有event了。必现的。
sourceData: {"eventName":"callPageOnShow","status":"","keepTime":""}
sourceData: {"eventName":"cancelVoip","groupId":"wxf830863afde621ebWmpfVoip6031637812064499742","status":"forceFromApp","keepTime":""}
sourceData: {"eventName":"endVoip","groupId":"wxf830863afde621ebWmpfVoip6031637812064499742","status":"","keepTime":0}
sourceData: {"eventName":"finishVoip","groupId":"wxf830863afde621ebWmpfVoip6031637812064499742","status":"","keepTime":0}
sourceData: {"eventName":"joinFailListener","groupId":"","status":"","keepTime":""}
sourceData: {"eventName":"endVoip","groupId":"","status":"","keepTime":0}
手机端busy也有概率是这样
{"eventName":"callPageOnShow","status":"","keepTime":""}
{"eventName":"busy","groupId":"wxf830863afde621ebWmpfVoip13283298290380422460","status":"","keepTime":""}
{"eventName":"endVoip","groupId":"wxf830863afde621ebWmpfVoip13283298290380422460","status":"","keepTime":0}
{"eventName":"finishVoip","groupId":"wxf830863afde621ebWmpfVoip13283298290380422460","status":"","keepTime":0}
{"eventName":"joinFailCaller","groupId":"wxf830863afde621ebWmpfVoip13283298290380422460","status":"","keepTime":""}
{"eventName":"endVoip","groupId":"","status":"","keepTime":0}