From the aesconnector trace, we are seeing the call is getting disconnected while doing the transfer. Logs are attached.

Please check the log extract below. We see the error message "got Connection Disconnected Event but during an alert or after queue. Probably calling a VDN"

29/02/2016 05:26:10:819 DEBUG - Transfer.doMerge: Performing transfer...
29/02/2016 05:26:10:819 DEBUG - Transfer.doMerge:1029409 active callid is 2455 held call id is 2454
29/02/2016 05:26:10:931 DEBUG - CTICallObserver.callChangedEvent: Number of events on extension 1029409 is 4
29/02/2016 05:26:10:931 DEBUG - CTICallObserver.callChangedEvent 1029409: Event: 0 is 107 for call 2455 Provider:SADCTAES3CMAPI
29/02/2016 05:26:10:931 DEBUG - CTICallObserver.callChangedEvent:1029409: got Connection Disconnected Event but during an alert or after queue. Probably calling a VDN
29/02/2016 05:26:10:931 DEBUG - CTICallObserver.callChangedEvent 1029409: Event: 1 is 205 for call 2455 Provider:SADCTAES3CMAPI
29/02/2016 05:26:10:931 DEBUG - CTICallObserver.callChangedEvent:1029409: got Connection Disconnected Event but during an alert or after queue. Probably calling a VDN
29/02/2016 05:26:10:932 DEBUG - CTICallObserver.callChangedEvent 1029409: Event: 2 is 107 for call 2455 Provider:SADCTAES3CMAPI
29/02/2016 05:26:10:932 DEBUG - CTICallObserver.callChangedEvent:1029409: got Connection Disconnected Event but during an alert or after queue. Probably calling a VDN
29/02/2016 05:26:10:932 DEBUG - CTICallObserver.callChangedEvent 1029409: Event: 3 is 205 for call 2455 Provider:SADCTAES3CMAPI
29/02/2016 05:26:10:932 DEBUG - CTICallObserver.callChangedEvent:1029409: got Connection Disconnected Event but during an alert or after queue. Probably calling a VDN
29/02/2016 05:26:10:934 DEBUG - CTICallObserver.callChangedEvent: Number of events on extension 1029409 is 4
29/02/2016 05:26:10:935 DEBUG - CTIConnectorManager.dropCall: Call com.avaya.jtapi.tsapi.impl.LucentV7CallImpl@1b5a40a dropped
29/02/2016 05:26:10:935 DEBUG - Mutex.setWait: wait is false
29/02/2016 05:26:10:935 DEBUG - CTICallObserver.callChangedEvent 1029409: Event: 0 is 117 for call 2455 Provider:SADCTAES3CMAPI
29/02/2016 05:26:10:935 DEBUG - removeTimer: Removing timer from map
29/02/2016 05:26:10:935 DEBUG - CTICallObserver.callChangedEvent:1029409: got an unknown event 117
29/02/2016 05:26:10:935 DEBUG - CTICallObserver.callChangedEvent 1029409: Event: 1 is 215 for call 2455 Provider:SADCTAES3CMAPI
29/02/2016 05:26:10:935 DEBUG - CTICallObserver.callChangedEvent:1029409: got an unknown event 215
29/02/2016 05:26:10:935 DEBUG - CTICallObserver.callChangedEvent 1029409: Event: 2 is 107 for call 2455 Provider:SADCTAES3CMAPI
29/02/2016 05:26:10:935 DEBUG - CTICallObserver.callChangedEvent:1029409: got Connection Disconnected Event but during an alert or after queue. Probably calling a VDN
29/02/2016 05:26:10:936 DEBUG - CTICallObserver.callChangedEvent 1029409: Event: 3 is 205 for call 2455 Provider:SADCTAES3CMAPI
29/02/2016 05:26:10:936 DEBUG - CTICallObserver.callChangedEvent:1029409: got Connection Disconnected Event but during an alert or after queue. Probably calling a VDN
29/02/2016 05:26:10:942 DEBUG - CTICallObserver.callChangedEvent: Number of events on extension 1029409 is 1
29/02/2016 05:26:10:943 DEBUG - CTICallObserver.callChangedEvent 1029409: Event: 0 is 103 for call 2455 Provider:SADCTAES3CMAPI
29/02/2016 05:26:10:943 DEBUG - CTICallObserver.callChangedEvent:1029409: got Call Observation Ended Event
29/02/2016 05:26:10:943 DEBUG - CTICallObserver.removeCall:clearing MRCC:2455 from ext:1029409
29/02/2016 05:26:10:943 DEBUG - CTICallObserver.removeCall:removing call:2455 from ext:1029409
29/02/2016 05:26:10:945 DEBUG - Transfer.doMerge:1029409 number of connections is 1
29/02/2016 05:26:10:945 DEBUG - Transfer.doMerge:1029409 found held call 2454
29/02/2016 05:26:10:945 DEBUG - Transfer.doMerge:1029409 didn't find the active and/or held call
29/02/2016 05:26:10:945 ERROR - ConsultationCall.doConsultationCall: got an exception in consult call:Transfer.doMerge:1029409 didn't find the active and/or held call
29/02/2016 05:26:10:945 ERROR - ConsultationCall.doConsultationCall: Failed the transfer active call is in state 34 held call is in state:33
29/02/2016 05:26:10:945 DEBUG - ConsultationCall.doConsultationCall: transfer failed, retrieving call
29/02/2016 05:26:10:945 DEBUG - ConsultationCall.doConsultationCall: transfer failed, drop the active call first

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