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: