[Freeswitch-users] send_info is not supported

Hi I am trying to utilize uuid_send_info, but face some unclear behaviour for me. I run in fs_cli like "uuid_send_info <uuid> <message>" and get "mod_sofia.c:1709 <channel name here> send_info is not supported". There is channel var fs_send_unsupported_info true in that channel. Is anybody used this functionality, am I missing something?