@jkandasa I've tried to reboot and have such rsponce:
Apr 28, 2016 02:49:44 PM serial 0:GatewayNode Received Internal [Log message] send: 0-0-1-1 s=255,c=3,t=13,pt=0,l=0,sg=0,st=fail:
Apr 28, 2016 02:49:44 PM serial 1:SensorNode Sent Internal [Reboot]