FTDM_COMMAND_DISABLE_ECHOTRAIN 4083 mod_freetdm/mod_freetdm.c 	ftdm_channel_command(tech_pvt->ftdmchan, FTDM_COMMAND_DISABLE_ECHOTRAIN, &x);
FTDM_COMMAND_DISABLE_ECHOTRAIN  698 src/ftmod/ftmod_zt/ftmod_zt.c 	case FTDM_COMMAND_DISABLE_ECHOTRAIN: