SWITCH_MESSAGE_INDICATE_RINGING 812 mod_freetdm/mod_freetdm.c case SWITCH_MESSAGE_INDICATE_RINGING: SWITCH_MESSAGE_INDICATE_RINGING 859 mod_freetdm/mod_freetdm.c case SWITCH_MESSAGE_INDICATE_RINGING: SWITCH_MESSAGE_INDICATE_RINGING 939 mod_freetdm/mod_freetdm.c case SWITCH_MESSAGE_INDICATE_RINGING: