SWITCH_MESSAGE_INDICATE_RINGING 806 mod_freetdm/mod_freetdm.c case SWITCH_MESSAGE_INDICATE_RINGING: SWITCH_MESSAGE_INDICATE_RINGING 853 mod_freetdm/mod_freetdm.c case SWITCH_MESSAGE_INDICATE_RINGING: SWITCH_MESSAGE_INDICATE_RINGING 933 mod_freetdm/mod_freetdm.c case SWITCH_MESSAGE_INDICATE_RINGING: