Server at disconnect:

freeswitch@fs.int.fluky.biz@internal>
2017-02-24 02:51:30.569457 [NOTICE] sofia.c:952 Hangup sofia/internal/1234@domain.com [CS_EXECUTE] [INCOMPATIBLE_DESTINATION]


Client at disconnect:
2017-02-23 18:51:30.187614 [DEBUG] switch_core_media.c:2547 [VBR]: Correcting calculated ptime value from [100] to [33] to compensate for [2] lost packet(s)
2017-02-23 18:51:30.187614 [WARNING] switch_core_media.c:2567 [VBR]: Asynchronous PTIME supported, adjusting JB size. Remote PTIME changed from [20] to [33]
2017-02-23 18:51:30.208308 [NOTICE] switch_core_media.c:2976 Deactivating write resampler
2017-02-23 18:51:30.208308 [DEBUG] switch_core_media.c:2983 Changing Codec from opus@20ms@48000hz to opus@33ms@48000hz
2017-02-23 18:51:30.227286 [NOTICE] switch_core_io.c:1202 Activating write resampler
2017-02-23 18:51:30.247869 [DEBUG] mod_opus.c:661 Opus decoder stats: Frames[3435] PLC[0] FEC[0]
2017-02-23 18:51:30.247869 [DEBUG] mod_opus.c:661 Opus decoder stats: Frames[0] PLC[0] FEC[0]
2017-02-23 18:51:30.247869 [WARNING] switch_core_codec.c:721 Codec opus Exists but not at the desired implementation. 48000hz 33ms 1ch
2017-02-23 18:51:30.247869 [ERR] switch_core_media.c:3020 Can't load codec?
2017-02-23 18:51:30.247869 [NOTICE] switch_core_media.c:3021 Hangup sofia/softphone/9998 [CS_EXCHANGE_MEDIA] [INCOMPATIBLE_DESTINATION]