fix analog fxs state machine issue

git-svn-id: http://svn.openzap.org/svn/openzap/trunk@569 a93c3328-9c30-0410-af19-c9cd2b2d52af

libs/openzap/mod_openzap/mod_openzap.c

@@ -779,19 +779,24 @@ static switch_status_t channel_receive_message_fxs(switch_core_session_t *sessio
 	switch (msg->message_id) {
 	case SWITCH_MESSAGE_INDICATE_PROGRESS:
 	case SWITCH_MESSAGE_INDICATE_ANSWER:
-		if (switch_channel_test_flag(channel, CF_OUTBOUND)) {
+		if (!switch_channel_test_flag(channel, CF_OUTBOUND)) {
 			zap_set_flag_locked(tech_pvt->zchan, ZAP_CHANNEL_ANSWERED);
 			zap_set_flag_locked(tech_pvt->zchan, ZAP_CHANNEL_PROGRESS);
 			zap_set_flag_locked(tech_pvt->zchan, ZAP_CHANNEL_MEDIA);
-		} else {
 			zap_set_state_locked(tech_pvt->zchan, ZAP_CHANNEL_STATE_UP);
+			switch_channel_mark_answered(channel);
 		}
 		break;
 	case SWITCH_MESSAGE_INDICATE_RINGING:
-		if (!(switch_channel_test_flag(channel, CF_OUTBOUND) || 
-			  switch_channel_test_flag(channel, CF_ANSWERED) || 
-			  switch_channel_test_flag(channel, CF_EARLY_MEDIA))) {
-			zap_set_state_locked(tech_pvt->zchan, ZAP_CHANNEL_STATE_RING);
+		if (!switch_channel_test_flag(channel, CF_OUTBOUND)) {
+			
+			if (!switch_channel_test_flag(channel, CF_ANSWERED) && 
+				!switch_channel_test_flag(channel, CF_EARLY_MEDIA) &&
+				!switch_channel_test_flag(channel, CF_RING_READY)
+				) {
+				zap_set_state_locked(tech_pvt->zchan, ZAP_CHANNEL_STATE_RING);
+				switch_channel_mark_ring_ready(channel);
+			}
 		}
 		break;
 	default:

libs/openzap/src/zap_io.c

@@ -733,6 +733,7 @@ zap_status_t zap_channel_set_state(zap_channel_t *zchan, zap_channel_state_t sta
 			switch(state) {
 			case ZAP_CHANNEL_STATE_PROGRESS:
 			case ZAP_CHANNEL_STATE_PROGRESS_MEDIA:
+			case ZAP_CHANNEL_STATE_RING:
 				ok = 0;
 				break;
 			default: