A issue was found when getTransports in BalancerNodeMonitorMBeanImpl
The following code from BalancerNodeMonitorMBeanImpl is used to get SIP tansports. Please pay attention to that the parameter "getTransports" is not match with MBean attribute "Transport". thereby the exception "Cannot access the SIP RA MBean" will be thrown when the code run.
// String getTransports();
String transports = (String) server.invoke(oi.getObjectName(), "getTransport", null, null);