2015-04-24 03:00:37.433196 [WARNING] switch_core_media.c:1945 Changing current codec to PCMU (payload type 0).

2015-04-24 03:00:37.433196 [DEBUG] sofia.c:6413 Channel sofia/x.x.x.x entering state [ready][200]

2015-04-24 03:00:37.453197 [DEBUG] switch_core_media.c:2260 Changing Codec from G722@20ms@8000hz to PCMU@20ms@8000hz

2015-04-24 03:00:37.493187 [DEBUG] switch_core_media.c:2352 Set Codec sofia/sipinterface_1/simple@x.x.x.x PCMU/8000 20 ms 160 samples 64000 bits 1 channels

2015-04-24 03:00:37.493187 [DEBUG] switch_core_codec.c:123 sofia/sipinterface_1/simple@x.x.x.x Original read codec replaced with PCMU:0

2015-04-24 03:00:37.493187 [NOTICE] switch_core_io.c:1257 Activating write resampler