2013-08-20 19:14:58.820110 [WARNING] switch_core_codec.c:699 Codec PROXY Exists but not at the desired implementation. 90000hz 0ms 2013-08-20 19:14:58.820110 [ERR] switch_core_media.c:1837 Can't load codec? Getting this error with following settings: 1. media proxy mode enabled 2. late negotiation enabled 3. <X-PRE-PROCESS cmd="set" data="global_codec_prefs=G722,PCMU,PCMA,GSM,H264"/> Both sip clients are are h264 capable. The same configuration work fine on freeswitch running over ubuntu 12.04 but generates the above log and error on window 7 x64. I found that the freeswitch version I was using on linux was 1.2 and on windows it was 1.5 with git 39ad799 On Linux I checked out same revision and built it again. I could reproduce the issue on linux too. but in the latest revision the problem seems to be fixed. So now I am going to build the the current revision code for windows. Any comment on this or have anybody faced this issue ? Cheers, Pankaj