....
FINE: [aes:192.168.4.22:6585:0] Forwarded AudioStartEvent to Media
2017-02-21 01.04.52,403 :T-107: com.avaya.mvcs.proxy.CstaMarshallerNode$CstaMarshallerThread run
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WARNING: A service method threw an Exception when invoked!
ServiceMethod: com.avaya.platform.broker.impl.ServiceMethodImpl@10bff86[com.avaya.cmapi.extsvc.ExtendedVoiceUnitServicesImpl@198c68e, public ch.ecma.csta.binding.RecordMessageResponse com.avaya.cmapi.extsvc.VoiceUnitServicesImpl.recordMessage(ch.ecma.csta.binding.RecordMessage) throws ch.ecma.csta.errors.CstaException]
Exception: java.lang.IllegalStateException: [6585:aes:192.168.4.22:0] Station is onHook
Request: session[session 9241E65E977256CA8FC00CDB31FDB9E2-55] ch.ecma.csta.binding.RecordMessage@299e72
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
.....
Caused by: java.lang.IllegalStateException: [6585:aes:192.168.4.22:0] Station is onHook
at com.avaya.cmapi.intsvc.delegs.RecordingDelegate.validateTerminalSession(RecordingDelegate.java:303)

.....
2017-02-21 01.04.59,383 :T-104: com.avaya.mvcs.proxy.CstaRouterNode processPacket
WARNING: The service method threw java.lang.IllegalStateException: [6585:aes:192.168.4.22:0] Station is onHook, session=session[session 9241E65E977256CA8FC00CDB31FDB9E2-55,DefaultTCPChannel Bound to SocketAddress: /192.168.4.34:4721 Connected to SocketAddress: /192.168.4.236:30106], request=session[session 9241E65E977256CA8FC00CDB31FDB9E2-55] ch.ecma.csta.binding.RecordMessage@299e72
java.lang.IllegalStateException: [6585:aes:192.168.4.22:0] Station is onHook
at com.avaya.cmapi.intsvc.delegs.RecordingDelegate.validateTerminalSession(RecordingDelegate.java:303)
.....
2017-02-21 01.04.59,383 :T-104: com.avaya.mvcs.proxy.CstaRouterNode processPacket
FINE: invokeID= 10 Received java.lang.IllegalStateException: [6585:aes:192.168.4.22:0] Station is onHook in response to session[session 9241E65E977256CA8FC00CDB31FDB9E2-55] ch.ecma.csta.binding.RecordMessage@299e72
.....
FINEST: Returning negative ack to client session (9241E65E977256CA8FC00CDB31FDB9E2-55) : ch.ecma.csta.errors.CstaException: java.lang.IllegalStateException: [6585:aes:192.168.4.22:0] Station is onHook
ch.ecma.csta.errors.CstaException: java.lang.IllegalStateException: [6585:aes:192.168.4.22:0] Station is onHook
at com.avaya.mvcs.proxy.CstaMarshallerNode.convertToCstaException(CstaMarshallerNode.java:519)
.....
Caused by: java.lang.IllegalStateException: [6585:aes:192.168.4.22:0] Station is onHook
at com.avaya.cmapi.intsvc.delegs.RecordingDelegate.validateTerminalSession(RecordingDelegate.java:303)
.....