FTDM_COMMAND_ENABLE_ECHOCANCEL  413 src/ftdm_io.c  				ftdm_channel_command(chan, FTDM_COMMAND_ENABLE_ECHOCANCEL, NULL);
FTDM_COMMAND_ENABLE_ECHOCANCEL  433 src/ftdm_io.c  				ftdm_channel_command(chan, FTDM_COMMAND_ENABLE_ECHOCANCEL, NULL);
FTDM_COMMAND_ENABLE_ECHOCANCEL  623 src/ftmod/ftmod_wanpipe/ftmod_wanpipe.c 	case FTDM_COMMAND_ENABLE_ECHOCANCEL:
FTDM_COMMAND_ENABLE_ECHOCANCEL  698 src/ftmod/ftmod_zt/ftmod_zt.c 	case FTDM_COMMAND_ENABLE_ECHOCANCEL: