Hi! We have been playing with Intel IPP G729 code and its module for FreeSWITCH. As reported here, we have successfully compile the fs-g729 module after install IPP libraries. https://code.google.com/p/fs-g729/issues/detail?id=3#c1 However, to test the codec in a loopback SIP call (FreeSWITCH calling itself over SIP), I need some G729 encoded files (do I really?) FreeSWITCH gives errors with G729 encoded file from here http://www.enicomms.com/cutglassivr/audiofiles/Alison_Keenan-British-English... Dialplan <action function="play-file" data="ivr/demo-thanks.g729"/> [ERR] switch_core_file.c:122 Invalid file format [g729] for [/usr/local/freeswitch/sounds/en/us/callie/ivr/demo-thanks.g729]! And also gives errors with file encoded using Intel IPP sample G729 encoder. <action function="play-file" data="ivr/ivr-welcome_to_freeswitch.g729"/> [ERR] switch_core_file.c:122 Invalid file format [g729] for [/usr/local/freeswitch/sounds/en/us/callie/ivr/ivr-welcome_to_freeswitch.g729]! Please note that the files are actually kept in the directory /usr/local/freeswitch/sounds/en/us/callie/ivr/8000 as are other demo_ivr sound files. # file /usr/local/freeswitch/sounds/en/us/callie//ivr/8000/*.g72* /usr/local/freeswitch/sounds/en/us/callie//ivr/8000/demo-thanks.g729: data /usr/local/freeswitch/sounds/en/us/callie//ivr/8000/ivr-welcome_to_freeswitch.g729: RIFF (little-endian) data, WAVE audio, mono 8000 Hz I suspect that ivr-welcome_to_freeswitch.g729 (produced by Intel IPP G729 encoder) is not really G729. Any pointers will be most helpful. Thanks! Anita.