Here is a sample of the avayalink log file. Maybe something there.
2015-04-08 15:00:05.842 INFO [#!0639]CSTA Confirmation Invoke ID: 3027 /Ref:639 / event 38
2015-04-08 15:00:05.842 INFO [#!0639]Querying device (18610) done
2015-04-08 15:00:05.842 INFO Flag Phone Change for Phone [639] at [CTILink.cpp:936]
2015-04-08 15:00:05.951 INFO [#!0639]Wait done
2015-04-08 15:00:05.951 INFO Flag Phone Change for Phone [639] at [CTILink.cpp:797]
2015-04-08 15:00:05.967 INFO [#!0639]CSTA Confirmation Invoke ID: 3028 /Ref:639 / event 114
2015-04-08 15:00:05.967 INFO [#!0639]Monitor crossref : 745
2015-04-08 15:00:05.967 INFO [#!0639]Call Filter : 00008000
2015-04-08 15:00:05.967 INFO [#!0639]Agent Filter : 000000fc
2015-04-08 15:00:05.967 INFO [#!0639]Feature Filter : 00000090
2015-04-08 15:00:05.967 INFO [#!0639]Maintenance Filter : 000000c0
2015-04-08 15:00:05.967 INFO [#!0639]Private Filter : 00000000
2015-04-08 15:00:05.967 INFO [#!0639]>[3029][GetDeviceId][switchName]MPLAES02[extension]18610[controllableByOtherSessions]true
2015-04-08 15:00:05.967 INFO Flag Phone Change for Phone [639] at [CTILink.cpp:981]
2015-04-08 15:00:05.982 INFO Added decrypted data for the IP Connection with handle 0
2015-04-08 15:00:05.982 INFO DMCC: <[3029][CSTAErrorCode][unspecified]
2015-04-08 15:00:05.982 INFO [#!0639]<[CSTAErrorCode][unspecified]
2015-04-08 15:00:05.982 ERROR [#!0639]CSTA error [0]
2015-04-08 15:00:05.982 INFO Flag Phone Change for Phone [639] at [CTILink.cpp:2159]
2015-04-08 15:00:06.544 INFO [LinkCtrlAvaya::OnReceiveRemoveTarget] Found phone with target ref 1 and [Id:743]
2015-04-08 15:00:06.544 INFO [LinkCtrlAvaya::OnReceiveRemoveTarget] Found phone with target ref 1 and [Id:743] has been set to removing state
2015-04-08 15:00:06.544 INFO Flag Phone Change for Phone [743] at [LinkCtrlAvaya.cpp:985]
2015-04-08 15:00:06.637 INFO [#!0743]Starting remove on 743
2015-04-08 15:00:06.637 INFO Flag Phone Change for Phone [743] at [CTILink.cpp:1291]
2015-04-08 15:00:06.637 INFO [#!0743]Trying to remove CSTA monitor for: 3019
2015-04-08 15:00:06.637 INFO [#!0743]No CSTA monitor handle found for: 3019
2015-04-08 15:00:06.637 INFO Flag Phone Change for Phone [743] at [CTILink.cpp:1335]
2015-04-08 15:00:06.637 INFO [#!0743]Removing target ref 743
2015-04-08 15:00:06.669 INFO [LinkCtrlAvaya::OnReceiveRemoveTarget] Removed phone with target ref 1
2015-04-08 15:00:07.573 INFO Add Target [1:3019]
2015-04-08 15:00:07.620 INFO [#!0744]Found new entry
2015-04-08 15:00:07.620 INFO Flag Phone Change for Phone [744] at [CTILink.cpp:834]
2015-04-08 15:00:07.620 INFO [#!0744]Wait has been set (0s)
2015-04-08 15:00:07.667 INFO [CConferenceResource::removeConferenceResource] Found phone with target ref 639 and [Id:744]
2015-04-08 15:00:07.698 INFO Add Conference Resource [1:18610]
2015-04-08 15:00:07.729 INFO [#!0639]Found new entry
2015-04-08 15:00:07.729 INFO Flag Phone Change for Phone [639] at [CTILink.cpp:834]
2015-04-08 15:00:07.729 INFO [#!0639]Wait has been set (0s)
2015-04-08 15:00:07.839 INFO [#!0639]Wait done
2015-04-08 15:00:07.839 INFO Flag Phone Change for Phone [639] at [CTILink.cpp:807]
2015-04-08 15:00:07.839 INFO [#!0639]Query device
2015-04-08 15:00:07.839 INFO [#!0639]Querying device (18610) with invoke ID [3031]
2015-04-08 15:00:07.839 INFO Flag Phone Change for Phone [639] at [CTILink.cpp:847]
2015-04-08 15:00:07.901 INFO [#!0639]CSTA Confirmation Invoke ID: 3031 /Ref:639 / event 38
2015-04-08 15:00:07.901 INFO [#!0639]Querying device (18610) done
2015-04-08 15:00:07.901 INFO Flag Phone Change for Phone [639] at [CTILink.cpp:936]
2015-04-08 15:00:08.010 INFO [#!0639]Wait done
2015-04-08 15:00:08.010 INFO Flag Phone Change for Phone [639] at [CTILink.cpp:797]
2015-04-08 15:00:08.026 INFO [#!0639]CSTA Confirmation Invoke ID: 3032 /Ref:639 / event 114
2015-04-08 15:00:08.026 INFO [#!0639]Monitor crossref : 746
2015-04-08 15:00:08.026 INFO [#!0639]Call Filter : 00008000
2015-04-08 15:00:08.026 INFO [#!0639]Agent Filter : 000000fc
2015-04-08 15:00:08.026 INFO [#!0639]Feature Filter : 00000090
2015-04-08 15:00:08.026 INFO [#!0639]Maintenance Filter : 000000c0
2015-04-08 15:00:08.026 INFO [#!0639]Private Filter : 00000000
2015-04-08 15:00:08.026 INFO [#!0639]>[3033][GetDeviceId][switchName]MPLAES02[extension]18610[controllableByOtherSessions]true
2015-04-08 15:00:08.026 INFO Flag Phone Change for Phone [639] at [CTILink.cpp:981]
2015-04-08 15:00:08.041 INFO Added decrypted data for the IP Connection with handle 0
2015-04-08 15:00:08.041 INFO DMCC: <[3033][CSTAErrorCode][unspecified]
2015-04-08 15:00:08.041 INFO [#!0639]<[CSTAErrorCode][unspecified]
2015-04-08 15:00:08.041 ERROR [#!0639]CSTA error [0]
2015-04-08 15:00:08.041 INFO Flag Phone Change for Phone [639] at [CTILink.cpp:2159]
2015-04-08 15:00:08.603 INFO [LinkCtrlAvaya::OnReceiveRemoveTarget] Found phone with target ref 1 and [Id:744]
2015-04-08 15:00:08.603 INFO [LinkCtrlAvaya::OnReceiveRemoveTarget] Found phone with target ref 1 and [Id:744] has been set to removing state
2015-04-08 15:00:08.603 INFO Flag Phone Change for Phone [744] at [LinkCtrlAvaya.cpp:985]
2015-04-08 15:00:08.697 INFO [#!0744]Starting remove on 744
2015-04-08 15:00:08.697 INFO Flag Phone Change for Phone [744] at [CTILink.cpp:1291]
2015-04-08 15:00:08.697 INFO [#!0744]Trying to remove CSTA monitor for: 3019
2015-04-08 15:00:08.697 INFO [#!0744]No CSTA monitor handle found for: 3019
2015-04-08 15:00:08.697 INFO Flag Phone Change for Phone [744] at [CTILink.cpp:1335]
2015-04-08 15:00:08.697 INFO [#!0744]Removing target ref 744
2015-04-08 15:00:08.728 INFO [LinkCtrlAvaya::OnReceiveRemoveTarget] Removed phone with target ref 1
2015-04-08 15:00:09.633 INFO Add Target [1:3019]
2015-04-08 15:00:09.679 INFO [#!0745]Found new entry
2015-04-08 15:00:09.679 INFO Flag Phone Change for Phone [745] at [CTILink.cpp:834]
2015-04-08 15:00:09.679 INFO [#!0745]Wait has been set (0s)
2015-04-08 15:00:09.726 INFO [CConferenceResource::removeConferenceResource] Found phone with target ref 639 and [Id:745]
2015-04-08 15:00:09.757 INFO Add Conference Resource [1:18610]
2015-04-08 15:00:09.789 INFO [#!0639]Found new entry
2015-04-08 15:00:09.789 INFO Flag Phone Change for Phone [639] at [CTILink.cpp:834]
2015-04-08 15:00:09.789 INFO [#!0639]Wait has been set (0s)
2015-04-08 15:00:09.898 INFO [#!0639]Wait done
2015-04-08 15:00:09.898 INFO Flag Phone Change for Phone [639] at [CTILink.cpp:807]
2015-04-08 15:00:09.898 INFO [#!0639]Query device
2015-04-08 15:00:09.898 INFO [#!0639]Querying device (18610) with invoke ID [3035]
2015-04-08 15:00:09.898 INFO Flag Phone Change for Phone [639] at [CTILink.cpp:847]
2015-04-08 15:00:09.913 INFO [#!0639]CSTA Confirmation Invoke ID: 3035 /Ref:639 / event 38
2015-04-08 15:00:09.913 INFO [#!0639]Querying device (18610) done
2015-04-08 15:00:09.913 INFO Flag Phone Change for Phone [639] at [CTILink.cpp:936]
2015-04-08 15:00:10.023 INFO [#!0639]Wait done
2015-04-08 15:00:10.023 INFO Flag Phone Change for Phone [639] at [CTILink.cpp:797]
2015-04-08 15:00:10.038 INFO [#!0639]CSTA Confirmation Invoke ID: 3036 /Ref:639 / event 114
2015-04-08 15:00:10.038 INFO [#!0639]Monitor crossref : 747
2015-04-08 15:00:10.038 INFO [#!0639]Call Filter : 00008000
2015-04-08 15:00:10.038 INFO [#!0639]Agent Filter : 000000fc
2015-04-08 15:00:10.038 INFO [#!0639]Feature Filter : 00000090
2015-04-08 15:00:10.038 INFO [#!0639]Maintenance Filter : 000000c0
2015-04-08 15:00:10.038 INFO [#!0639]Private Filter : 00000000
2015-04-08 15:00:10.038 INFO [#!0639]>[3037][GetDeviceId][switchName]MPLAES02[extension]18610[controllableByOtherSessions]true
2015-04-08 15:00:10.038 INFO Flag Phone Change for Phone [639] at [CTILink.cpp:981]
2015-04-08 15:00:10.054 INFO Added decrypted data for the IP Connection with handle 0
2015-04-08 15:00:10.054 INFO DMCC: <[3037][CSTAErrorCode][unspecified]
2015-04-08 15:00:10.054 INFO [#!0639]<[CSTAErrorCode][unspecified]
2015-04-08 15:00:10.054 ERROR [#!0639]CSTA error [0]
2015-04-08 15:00:10.054 INFO Flag Phone Change for Phone [639] at [CTILink.cpp:2159]
Juan Rivera
Senior Telecomm. Technician
Micro Strategies, Inc