Index: channels/chan_iax2.c
===================================================================
--- channels/chan_iax2.c	(revision 264538)
+++ channels/chan_iax2.c	(working copy)
@@ -5438,6 +5438,11 @@
 	}
 
 	switch (condition) {
+	case AST_CONTROL_RINGING:
+		if (c->_state != AST_STATE_RING) {
+			goto done;
+		}
+		break;
 	case AST_CONTROL_HOLD:
 		if (strcasecmp(pvt->mohinterpret, "passthrough")) {
 			ast_moh_start(c, data, pvt->mohinterpret);